Powered by Deep Web Technologies
Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Geosynthetic clay liner applications  

SciTech Connect (OSTI)

Geosynthetic clay liners (GCLs) are becoming a popular alternative to compacted clay barrier layers at sanitary landfills. They possess many of the same qualities of compacted clay barrier layers while occupying only a small fraction of the airspace. This is a very attractive feature to waste disposal facility owners and operators. Designing for, and constructing with, a GCL can be a challenging task--stability issues must be evaluated, selecting the appropriate product should be considered, comprehensive specifications are needed to ensure proper product selection and installation, and steps must be taken during installation to prevent damage to the GCL. Perhaps most importantly, state regulatory agencies must be convinced that GCLs will provide long-term protection that is equivalent to a clay barrier layer.

McGrath, L.T.; Creamer, P.D. [RMT, Inc., Madison, WI (United States)

1995-05-01T23:59:59.000Z

2

1 INTRODUCTION Geosynthetic Clay Liners (GCLs) are sealing ele-  

E-Print Network [OSTI]

1 INTRODUCTION Geosynthetic Clay Liners (GCLs) are sealing ele- ments which contain bentonite: A significant number of studies have been published on the field performance of Geosynthetic Clay Liners (GCLs encapsulated between geotextile components. They have been mostly em- ployed to replace clay liners in landfill

Boyer, Edmond

3

Geosynthetic clay liners in alkaline environments  

SciTech Connect (OSTI)

The use of geosynthetic clay liners (GCLs) as secondary barrier layers in environmental applications such as landfills and other impoundment facilities is becoming increasingly more popular among the engineering community, particularly at project sites where earthen materials suitable for barrier layers may not be locally available. Design engineers for these environmental applications are becoming well versed at performing equivalency calculations comparing the performance of geosynthetic materials to their earthen counterparts. For barrier layers, these equivalency calculations would normally compare the mechanical and hydraulic properties of the GCL to a compacted clay liner. Of these properties, the ability of the hydraulic properties to withstand degradation due to permeation of contained leachates is of prominent concern. Such is the case in alkaline environments. The leachate may adversely affect the GCL by minimizing swelling, decreasing adsorption capacity and increasing the permeability of the material. If the effect on the material is significant, the usefulness of this product is diminished, possibly voiding any equivalency comparison to compacted clay liner performance. The design engineer must fully understand what effect, if any, specific leachates will have on the GCL being considered. Accordingly, appropriate performance testing with the leachate in question must be performed during the design phase and confirmed during construction through quality assurance testing. This paper will present the design considerations, required laboratory testing and conformance tests for a recent project that contained an alkaline leachate. Through appropriate testing, a contaminant resistant GCL was shown to possess desired hydraulic properties in the presence of the alkaline leachate.

McKelvey, J.A. III [Roy F. Weston, Inc., West Chester, PA (United States)

1997-11-01T23:59:59.000Z

4

Shear strength of reinforced geosynthetic clay liner  

SciTech Connect (OSTI)

Direct shear tests are conducted to evaluate the internal strength of a reinforced geosynthetic clay liner (GCL) at normal stresses between 3.45 and 69.0 kPa. The polypropylene reinforcement increases the peak internal strength compared to that reported in the literature for unreinforced GCLs; however, the reinforced GCL exhibits a postpeak reduction in strength with displacement due to failure of the reinforcement. Direct shear tests are also conducted to evaluate the interface strength between the reinforced GCL and other geosynthetic materials. Extrusion of bentonite from the GCL into the interfaces is noticed and may reduce the interface strengths. Peak interface strengths between the GCL and a smooth geomembrane or a drainage geocomposite are less than the internal strength at all normal stresses tested. However, the peak interface strength between the GCL and a textured geomembrane is limited by the peak internal strength for normal stresses exceeding 13.8 kPa. Postpeak reductions in strength with displacement occur for this interface at these higher normal stresses due to reinforcement failure.

Gilbert, R.B. [Univ. of Texas, Austin, TX (United States)] [Univ. of Texas, Austin, TX (United States); Fernandez, F. [Golder Associates, Inc., Naperville, IL (United States)] [Golder Associates, Inc., Naperville, IL (United States); Horsfield, D.W. [Golder Associates, Ltd., Calgary, Alberta (Canada)] [Golder Associates, Ltd., Calgary, Alberta (Canada)

1996-04-01T23:59:59.000Z

5

EFFECT OF BENTONITE MIGRATION IN GEOSYNTHETIC CLAY LINERS ON CONTAMINANT TRANSPORT  

E-Print Network [OSTI]

1 EFFECT OF BENTONITE MIGRATION IN GEOSYNTHETIC CLAY LINERS ON CONTAMINANT TRANSPORT T. D. Stark1.ca.gov ABSTRACT: Since the introduction of geosynthetic clay liners (GCLs) to waste containment facilities, one contaminant transport through a GCL. 1 INTRODUCTION In recent years, geosynthetic clay liners (GCLs

6

1 INTRODUCTION Geosynthetic clay liners (GCLs) with geomembranes (GMs) placed on slopes as part of composite  

E-Print Network [OSTI]

143 1 INTRODUCTION Geosynthetic clay liners (GCLs) with geomembranes (GMs) placed on slopes as part and interface shear strength of geosynthetic clay liners J.G. ZORNBERG The University of Texas at Austin, Austin of composite liner systems may be subject to a complex, time-dependent state of stresses. Stability is a major

Zornberg, Jorge G.

7

Installation of geosynthetic clay liners at California MSW landfills  

SciTech Connect (OSTI)

The California regulations for liner systems at municipal solid waste (MSW) landfills require that alternatives to the prescriptive federal Subtitle D liner system have a containment capability greater than that of the prescriptive system. Regulators may also require a demonstration that use of the prescriptive system is burdensome prior to approval of an alternative liner design. This paper presents seven case histories of the design and installation of geosynthetic clay liners (GCL) as an alternative to the low-permeability soil component of the prescriptive Subtitle D composite liner system at MSW landfills in California. These case histories cover GCLs from different manufacturers and landfill sites with a wide range of conditions including canyon landfills with slopes as steep as 1H:1V.

Snow, M.; Jesionek, K.S.; Dunn, R.J.; Kavazanjian, E. Jr.

1997-11-01T23:59:59.000Z

8

Effect of Specimen Conditioning on Geosynthetic Clay Liner Shear J.S. McCartney & J.G. Zornberg  

E-Print Network [OSTI]

635 Effect of Specimen Conditioning on Geosynthetic Clay Liner Shear Strength J.S. McCartney & J of geosynthetic clay liners (GCLs) must replicate field conditions while still accounting for time and cost to conditioning. 1 INTRODUCTION Geosynthetic clay liners (GCLs) are prefabricated geocomposite materials used

Zornberg, Jorge G.

9

Investigation of the suitability of a geosynthetic clay liner system for the El Paso Solar Pond  

SciTech Connect (OSTI)

The El Paso Solar Pond Project experienced a complete failure of its XR-5 8130 (SP) membrane liner. This paper will summarize the XR-5 8130 (SP) liner failure analysis, and provide design and installation procedures of its replacement: a geosynthetic clay liner (GCL). This application represents the first use of a GCL in a solar pond. Geosynthetic clay liners offer major advantages over membrane liners. Unlike membrane liners, clay liners are puncture-proof, have predictable permeability, and are self-healing. Furthermore, the cost of clay liners is less than that of membrane liners. However, disagreement exists as to the efficacy of clay liners in solar ponds. The high temperatures and salinity of the pond are factors which cause the most concern. Most information available for clay liners is in conjunction with municipal waste disposal facilities, although compacted clay liners have been used in Israel and Mexico for solar ponds.

Robbins, M.C.; Lu, H.; Swift, A.H.P. Jr. [Univ. of Texas, El Paso, TX (United States). Mechanical and Industrial Engineering Dept.

1995-10-01T23:59:59.000Z

10

Slope stability of geosynthetic clay liner test plots  

SciTech Connect (OSTI)

Fourteen full-scale field test plots containing five types of geosynthetic clay liners (GCLs) were constructed on 2H:1V and 3H:1V slopes for the purpose of assessing slope stability. The test plots were designed to simulate typical final cover systems for landfills. Slides occurred in two of the 2H:1V test plots along interfaces between textured geomembranes and the woven geotextile components of internally reinforced GCLs. One additional slide occurred within the unreinforced GCL component of a 2H:1V test plot, when the GCL unexpectedly became hydrated. All 3H:1V slopes have remained stable. Results of laboratory direct shear tests compared favorably with field observations, providing support for the current design procedures that engineers are using for assessing the stability of slopes containing GCLs.

Daniel, D.E. [Univ. of Illinois, Urbana, IL (United States); Koerner, R.M. [Drexel Univ., Philadelphia, PA (United States). Geosynthetic Research Inst.; Bonaparte, R. [GeoSyntec Consultants, Atlanta, GA (United States); Landreth, R.E. [Landreth, (Robert E.), West Chester, OH (United States); Carson, D.A. [Environmental Protection Agency, Cincinnati, OH (United States); Scranton, H.B. [Haley and Aldrich, Boston, MA (United States)

1998-07-01T23:59:59.000Z

11

Geosynthetic Clay Liner applications in waste disposal facilities  

SciTech Connect (OSTI)

Geosynthetic Clay Liners (GCLs) are becoming a popular alternative to compacted clay barrier layers, and represent the state of the art in waste disposal facility design. They possess many of the same qualities of compacted clay barrier layers while occupying only a small fraction of the airspace. This is a very attractive feature to waste disposal facility owners and operators. There are many manufacturers of GCLs in the marketplace, providing numerous products that can be used in a wide variety of applications. Designing for the constructing with a GCL an be a challenging task; stability issues must be evaluated, selecting the appropriate product should be considered, comprehensive specifications are needed to ensure proper product selection and installation, and steps must be taken during installation to prevent damage to the GCL. Perhaps most importantly, state regulatory agencies must be convinced that GCLs will provide long-term protection equivalent to a clay barrier layer. This paper will discuss design considerations, specification guidelines, installation criteria, construction quality assurance guidelines and regulatory issues pertaining to GCL. The paper will also present three brief case histories of relevant GCL applications in waste disposal facility design and construction. The purpose of the paper is to demonstrate that GCLs are a viable alternative to compacted clay barrier layers and to provide useful information in designing, specifying and installing them in waste disposal facilities.

McGrath, L.T.; Creamer, P.D. [RMT, Inc., Madison, WI (United States)

1995-12-31T23:59:59.000Z

12

Damage to HDPE geomembrane from interface shear over gravelly compacted clay liner  

E-Print Network [OSTI]

strength of three geosynthetic clay liners,” Journal ofperformance of geosynthetic clay liners under gravel coverShear Machine for Geosynthetic Clay Liners,” Geotechnical

Thielmann, Stuart

2012-01-01T23:59:59.000Z

13

Short-term and creep shear characteristics of a needlepunched thermally locked geosynthetic clay liner  

SciTech Connect (OSTI)

A series of constant-rate direct shear tests were conducted on a needlepunched thermally locked geosynthetic clay liner (GCL) in accordance with ASTM Test Method for Determining the Coefficient of Soil and Geosynthetic or Geosynthetic and Geosynthetic Friction by the Direct Shear Method (D 5321). The test results demonstrate that the needlepunched thermally locked reinforcing fibers provide substantial short-term shear strength to a GCL. However, there is a growing concern that the long-term shear strength to a GCL. However, there is a growing concern that the long-term shear strength of this type of GCL can be affected due to the potential of creep within the reinforcing fibers under sustained constant loads which occur in the field. An attempt was made to address this concern through an incrementally-loaded creep shear test conducted in a newly developed constant-load (creep) shear testing device. The results of the creep shear test to date show that the GCL has undergone relatively small shear displacements with incremental shear rates decreasing with time within each loading phase.

Siebken, J.R. [National Seal Co., Galesburg, IL (United States). Technical Services; Swan, R.H. Jr.; Yuan, Z. [GeoSyntec Consultants, Atlanta, GA (United States). Soil-Geosynthetic Interaction Testing Lab.

1997-11-01T23:59:59.000Z

14

Laboratory simulation of geosynthetic clay liner application in contaminated liquids evacuation  

SciTech Connect (OSTI)

To prevent a contamination of soil and underground water by leaking mineral oil, recovery basins are designed and constructed in Quebec, Canada. The functions of such basins are to collect and to evacuate oil to a drainage and then to a recycled and treatment station. The material presently used for such an application is a concrete. However, due to difficult access to some of the transformers, and to the difficult low temperature conditions, engineers are looking for a new, alternate design idea. In order to evaluate the geosynthetic clay liner (GCL) hydraulic behavior in such applications, a laboratory demonstration test has been conducted. A full-scale model was designed and constructed for the purpose of measuring the rate of water flow through different layers of the proposed system. Mineral oil leaks as well as precipitation were simulated during the research program. The testing consisted of the measurements of mineral oil and water (precipitation) volumes at four levels of the demonstration model, during a period of two months. The results showed that only one percent of precipitated water and leaked mineral oil was collected underneath the geosynthetic clay liner. Further research is recommended on: techniques of seaming of GCLs joints and connections; the minimum acceptance rate of hydration of GCLs for different liquids; an influence of water content of soils on GCLs hydration; and a long term hydraulic compatibility of GCLs with different liquids and leachates.

Mlynarek, J.; Vermeersch, O.G. [Geosynthetics Analysis Service, Saint-Hyacinthe, Quebec (Canada); Lemelin, D. [Hydro-Quebec, Montreal, Quebec (Canada)

1997-11-01T23:59:59.000Z

15

In-situ studies on the performance of landfill caps (compacted soil liners, geomembranes, geosynthetic clay liners, capillary barriers)  

SciTech Connect (OSTI)

Since 1986 different types of landfill covers have been studied in-situ on the Georgswerder landfill in Hamburg, Germany. Water balance data are available for eight years. The performance of different carriers has been measured by collecting the leakage on areas ranging from 100 m{sup 2} to 500 m{sup 2}. Composite liners with geomembranes performed best, showing no leakage. An extended capillary barrier also performed well. The performance of compacted soil liners, however, decreased severely within five years due to desiccation, shrinkage and plant root penetration (liner leakage now ranging from 150 mm/a to 200 mm/a). About 50 % of the water that reaches the surface of the liner is leaking through it. The maximum leakage rates have increased from 2 x 10{sup -10} m{sup 3} m{sup -2} s{sup -1} to 4 x 10{sup -8} m{sup 3} m{sup -2} s{sup -1}. Two types of geosynthetic clay liners (GCL) have been tested for two years now with disappointing results. The GCL desiccated during the first dry summer of the study. High percolation rates through the GCL were measured during the following winter (45 mm resp. 63 mm in four months). Wetting of the GCL did not significantly reduce the percolation rates.

Melchior, S. [IGB - Ingenieurbuero fuer Grundbau, Hamburg (Germany)

1997-12-31T23:59:59.000Z

16

Reconstruction and operation of the El Paso Solar Pond with a geosynthetic clay liner system  

SciTech Connect (OSTI)

After the original XR-5 membrane liner failed in 1992, the El Paso Solar Pond was reconstructed and operated with a geosynthetic clay liner (GCL) system. The solar pond is approximately 3,000 m{sup 2} in surface area, and 3.2 meters deep with a 15{degree} side-wall slope. A new heat extraction system includes 15-cm (6-inch) rubber hoses and two redesigned polypropylene diffusers. A new automated instrumentation system was developed for monitoring pond status. It uses a newly developed scanner combined with a computer for both position control and data logging. The salinity gradient was established using a new scanning method, as opposed to the previously used fixed point method. Fresh water was injected into brine through a newly designed PVC bar shaped diffuser, which scans automatically within preset regions. After two months, the pond bottom reached 80 C and heat extraction began. The performance of the GCL system, characterized by its hydraulic conductivity, has been monitored, and generates the first full scale, elevated temperature data for a GCL system. Preliminary hydraulic conductivity data indicate values comparable with other clay liner systems.

Lu, H.; Swift, A.H.P. [Univ. of Texas, El Paso, TX (United States)

1996-12-31T23:59:59.000Z

17

Field performance of a geosynthetic clay liner landfill capping system under simulated waste subsidence  

SciTech Connect (OSTI)

A flexible landfill capping system consisting of a 3-D-geocore composite for gas vent, a Geosynthetic Clay Liner (GCL) for sealing and a 3-D-geocore composite for drainage of the vegetation soil was built on a test field at Michelshoehe landfill near Weimar, Germany. At four locations airbags were installed underneath the thin capping system to simulate subsidences. On top of three of these airbags overlaps of the GCL were positioned, for comparison there was no overlap at the fourth location. After hydratation of the GCL the airbags were de-aerated and subsidences occurred with app. 5 % tensile strain in the GCL. For three weeks the test field was intensively sprinkled in intervals. Then horizontal and vertical deformations were measured, but not displacements were registered in the overlaps. The evaluation of the GCL`s permeability showed no significant difference between the locations with and without overlaps.

Weiss, W. [Hochschule fur Architektur und Bauwesen (Germany); Siegmund, M. [Materialforschungs - und, Prufanstalt (Germany); Alexiew, D.

1995-10-01T23:59:59.000Z

18

Effects of cyclic loading on internal shear strength of unreinforced geosynthetic clay liner  

SciTech Connect (OSTI)

Stress-controlled static and cyclic shear tests were performed by using a direct simple shear device on samples of a geomembrane-supported geosynthetic clay liner (GCL). The dry material showed no degradation in shear strength during cyclic loading as long as the peak shear stress was less than the static shear strength of the GCL with no cyclic loading. Furthermore, cyclic loading slightly densified the dry bentonite and thus increased its shear resistance under subsequent static loading. On the other hand, the shear strength of the hydrated GCL was found to be reduced by cyclic loading. The number of cycles to cause failure decreased with increasing cyclic stress ratio (cyclic shear stress divided by undrained static shear strength); at a cyclic stress ratio of 0.67, failure occurred at 32 cycles of loading, but at a cyclic stress ratio of 0.53, failure did not occur until up to 200 cycles of loading.

Lai, J. [Ghaoyang Univ. of Technology, Taichung (Taiwan, Province of China); Daniel, D.E. [Univ. of Illinois, Urbana, IL (United States). Dept. of Civil Engineering; Wright, S.G. [Univ. of Texas, Austin, TX (United States). Dept. of Civil Engineering

1998-01-01T23:59:59.000Z

19

Hydraulic conductivity testing of geosynthetic clay liners (GCLs) using the constant volume method  

SciTech Connect (OSTI)

Hydraulic conductivity tests were conducted using open and constant-volume permeation systems on specimens from a geosynthetic clay liner (GCL). Two constant volume (CV) systems were employed: the falling-head constant-volume (FHCV) system and the constant-head constant-volume (CHCV) system. A conventional burette system using pressurized air was employed for the open system (OS) tests. The test results show that hydraulic conductivity tests can be conducted 30 or more times faster with the FHCV and CHCV systems than with an open system. Typically the permeation portion of the FHCV and CHCV tests can be conducted in one-half day. Slightly lower hydraulic conductivities are measured with the CV systems due to the slightly higher effective stress applied during testing with these systems. The CHCV system has several advantages over the FHCV system, including minimizing initial transient behavior, constant applied effective stress during testing, and simpler calculations.

Wang, X.; Benson, C.H.

1999-12-01T23:59:59.000Z

20

Long-term shear strength behavior of a needlepunched geosynthetic clay liner  

SciTech Connect (OSTI)

This paper describes two large-scale constant-load (creep) shear testing devices that were developed to evaluate the long-term shearing behavior of geosynthetic clay liners (GCLs) and interfaces between GCLs and other geosynthetics or soils. One device was designed to simulate loading conditions that typically occur on a GCL deployed in a landfill cover system. The other device was designed to simulate loading conditions that typically occur on a GCL deployed in a landfill lining system. A needlepunched GCL was selected for evaluation of its long-term shearing behavior under these two types of loading conditions and the test results are presented in terms of time-displacement curves and shear rate-displacement curves. The results to date show that the GCL has undergone relatively small shear displacements and that the shear displacement rates within the GCL and/or at the test interface have been continuously decreasing with time. For the conditions used in this testing program, it is believed that the GCL`s behavior can be considered stable. Further testing is planned to more accurately define the time-dependent internal and interface shear behavior of the GCL.

Trauger, R.J. [Colloid Environmental Technologies Co., Arlington Heights, IL (United States); Swan, R.H. Jr.; Yuan, Z. [GeoSyntec Consultants, Atlanta, GA (United States). Soil-Geosynthetic Interaction Testing Lab.

1997-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Characterization of Geosynthetic Clay Liner Bentonite using Micro-analytical Methods  

SciTech Connect (OSTI)

In barrier design, familiarity of the structure and composition of the soil material at the micron scale is necessary for delineating the retention mechanisms of introduced metals, such as the formation of new mineral phases. In this study, the mineralogical and chemical makeup of the bentonite from a geosynthetic clay liner (GCL) was extensively characterized using a combination of conventional benchtop X-ray diffraction (XRD) and micro X-ray diffraction ({mu}XRD) with synchrotron-generated micro X-ray fluorescence ({mu}XRF) elemental mapping and {mu}XRD (S-{mu}XRD). These methods allow for the non-destructive, in situ investigation of a sample, with {micro}m spatial resolution. Synchrotron-based hard X-ray microprobes are specifically advantageous to the study of trace metals due to higher spatial resolution (<10 {micro}m) and higher analytical sensitivity (femtogram detection) than is possible using normal laboratory-based instruments. Minerals comprising less than 5% of the total bentonite sample such as gypsum, goethite and pyrite were identified that were not accessible by other conventional methods for the same GCL bentonite. Two dimensional General Area Diffraction Detector System (GADDS) images proved to be particularly advantageous in differentiating between the microcrystalline clay, which appeared as homogeneous Debye rings, and the 'spotty' or 'grainy' appearance of primary, more-coarsely-crystalline, accessory minerals. For S-{mu}XRD, the tunability of the synchrotron X-rays allowed for efficient distinction of both clay minerals at low scattering angles and in identifying varying Fe oxide minerals at higher angles. GCL samples permeated with metal-bearing mining solutions were also examined in order to consider how mechanisms of metal attenuation may be identified using the same techniques. In addition to the cation exchange capacity from the montmorillonite clay, tests showed how minerals comprising only 1-2% of the bentonite such as goethite could potentially play a significant role in sequestering a range of metals, specifically Ni, Zn and Cu.

Lange, K.; Rowe, R; Jamieson, H; Flemming, R; Lanzirotti, A

2010-01-01T23:59:59.000Z

22

GEOSYNTHETICS ASIA 2012 Asian Regional Conference on Geosynthetics  

E-Print Network [OSTI]

regarding the behavior of geosynthetic clay liners (GCLs) as part of a composite liner, focused on the GM side in contact with the GCL. Keywords: Geosynthetics, composite liners, geosynthetic clay linerGEOSYNTHETICS ASIA 2012 5th Asian Regional Conference on Geosynthetics 10 to 15 December 2012

Paris-Sud XI, Université de

23

A comparison of sample preparation methodology in the evaluation of geosynthetic clay liner (GCL) hydraulic conductivity  

SciTech Connect (OSTI)

The method of preparing a single needle-punched GCL product for evaluation of hydraulic conductivity in a flexible wall permeameter was examined. The test protocol utilized for this evaluation was GRI Test Method GCL-2 Permeability of GCLs. The GCL product consisted of bentonite clay material supported by a woven and a non-woven geotextile on either side. The method preparation focused on the procedure for separating the test specimen from the larger sample and whether these methods produced difficulty in generating reliable test data. The methods examined included cutting with a razor knife, scissors, and a circular die with the perimeter of the test area under wet and dry conditions. In order to generate as much data as possible, tests were kept brief. Flow was monitored only long enough to determine whether or not preferential flow paths appeared to be present. The results appear to indicate that any of the methods involved will work. Difficulties arose not from the development of preferential flow paths around the edges of the specimens, but from the loss of bentonite from the edges during handling.

Siebken, J.R. [National Seal Co., Galesburg, IL (United States); Lucas, S. [Albarrie Naue Ltd., Barrie, Ontario (Canada)

1997-11-01T23:59:59.000Z

24

Advances in Geosynthetics Materials and Applications for Soil Reinforcement  

E-Print Network [OSTI]

in environmental protection projects, including geomembranes, geosynthetic clay liners (GCL), geonets barriers. Geosynthetic clay liners (GCLs) are geocomposites that are prefabricated with a bentonite clayAdvances in Geosynthetics Materials and Applications for Soil Reinforcement and Environmental

Zornberg, Jorge G.

25

Unsaturated geotechnics applied to geoenvironmental engineering problems involving geosynthetics  

E-Print Network [OSTI]

such as geotextiles and geosynthetic clay liners (GCLs) with particular focus on capillary barriers, liner performanceUnsaturated geotechnics applied to geoenvironmental engineering problems involving geosynthetics Available online 15 February 2013 Keywords: Capillary break Desiccation Flow Geosynthetics Interface shear

Zornberg, Jorge G.

26

Geosynthetics in Landfills Prepared by M. Bouazza and J. Zornberg  

E-Print Network [OSTI]

; · geosynthetic clay liners (GCLs), which are composite materials consisting of bentonite and geosynthetics and a #12;geomembrane/compacted clay liner composite as the secondary liner system. The leak detectionGeosynthetics in Landfills Prepared by M. Bouazza and J. Zornberg Geosynthetics are extensively

Zornberg, Jorge G.

27

LESSONS LEARNED FROM AN IMPOUNDMENT SLOPE FAILURE INVOLVING GEOSYNTHETICS  

E-Print Network [OSTI]

failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment. KEYWORDS: Geosynthetic clay liners, Interface Shear Strength, Waste containment, Strength, Stability to illustrate the importance of (i) properly storing geosynthetic clay liners (GCLs) to reduce the amount

28

Advances in Transportation and Geoenvironmental Systems Using Geosynthetics Geotechnical Special Publication No. 103  

E-Print Network [OSTI]

of Partially Saturated Geosynthetic Clay Liners ..................... 54 Abdelmalek Bouazza and Thaveesak ....................................... 81 David E. Daniel and Robert M. Koerner Field Performance of a Geomembrane and Geosynthetic ClayLiner Evaluation of Leachate Compatibility to Clay Soil for Three Geosynthetic Clay Liner Products

Zornberg, Jorge G.

29

Geosynthetics International, 2004, 11, No. 3 State-of-the-art report: GCL shear strength and  

E-Print Network [OSTI]

strength and shear strength testing of geosynthetic clay liners (GCLs). Essential concepts of shear stress, No. 3, 141­175 1. INTRODUCTION Internal and interface shear strengths of geosynthetic clay liners, and future research needs are identified. KEYWORDS: Geosynthetics, Bentonite, Durability, Geosynthetic clay

30

Geosynthetics International, 2004, 11, No. 4 Occurrence and effect of bentonite migration in  

E-Print Network [OSTI]

in geosynthetic clay liners T. D. Stark1 , H. Choi2 and R. Akhtarshad3 1 Professor, Department of Civil the introduction of geosynthetic clay liners (GCLs) to waste containment facilities, one of the major concerns. & Akhtarshad, R. (2004). Occurrence and effect of bentonite migration in geosynthetic clay liners

31

COMPARISON OF SINGLE AND MULTI GEOSYNTHETIC AND SOIL INTERFACE TESTS  

E-Print Network [OSTI]

, geosynthetic clay liner (GCL)/geomembrane, and soil/geosynthetic interfaces. This comparison shows an agreement and Choi 2004). A composite liner system consisting of multiple geosynthetic components, Liquid CollectionCOMPARISON OF SINGLE AND MULTI GEOSYNTHETIC AND SOIL INTERFACE TESTS Timothy D. Stark1 , Fawad S

32

Zornberg, Jorge G. et al."Geosynthetics" The Handbook of Groundwater Engineering  

E-Print Network [OSTI]

Function 27.3 Geosynthetic Types Geotextiles · Geomembranes · Geogrids · Geosynthetic Clay Liners (GCLs liner systems is to minimize potential groundwater contami- nation. Moreover, the use of geosyntheticsZornberg, Jorge G. et al."Geosynthetics" The Handbook of Groundwater Engineering Editor

Zornberg, Jorge G.

33

Hydraulic Interaction between Geosynthetic Drainage Layers and Unsaturated Low Plasticity Clay  

E-Print Network [OSTI]

1 Hydraulic Interaction between Geosynthetic Drainage Layers and Unsaturated Low Plasticity Clay of soil density on the hydraulic interaction between unsaturated, low plasticity clay and geosynthetic drainage layers. The hydraulic interaction was evaluated using the system hydraulic conductivity, moisture

Zornberg, Jorge G.

34

African Regional Conference 1 Advances in the Use of Geosynthetics  

E-Print Network [OSTI]

typically include both geosynthetics and earthen material components, (e.g. compacted clays for liners 1987) and to keep an upstream clay seepage control liner from dessicating in the Mission Dam (today of this paper is on stability of liners involving GCLs, geosynthetics in liquid collection systems, reinforced

Zornberg, Jorge G.

35

New Trends in the Use of Geosynthetics in Environmental Applications  

E-Print Network [OSTI]

typically include both geosynthetics and earthen material components, (e.g. compacted clays for liners 1987) and to keep an upstream clay seepage control liner from dessicating in the Mission Dam (today1 New Trends in the Use of Geosynthetics in Environmental Applications Jorge G. Zornberg, Ph.D., P

Zornberg, Jorge G.

36

Evaluation and remediation of a fire damaged geosynthetic liner system  

SciTech Connect (OSTI)

A fire in a hazardous waste landfill damaged the liner system consisting of compacted clay, geomembranes, geonets, geotextiles, and granular soils. Following waste excavation, the visibly damaged liner system materials were removed and samples of each component were obtained from the perimeter of the visibly undamaged area. Geomembrane samples were tested for tensile characteristics and index properties; geonet samples were tested for grab tensile properties and thickness. Test results were compared to the original specifications, manufacturers` quality control data, quality assurance conformance test results, and baseline sample data from an unaffected part of the landfill. Geomembrane baseline results exceeded the original specifications, and the specifications were used as the basis of acceptance of the perimeter samples. Geonet baseline results were inconclusive, with grab elongation consistently below the original specifications. A statistical approach was used to delineate the limit of affected geonet using the baseline sample data. The liner system was reconstructed to the limits defined by this testing program and returned to service following acceptance by the regulatory agencies.

Adams, F.T.; Overmann, L.K.; Cotton, R.L.

1997-11-01T23:59:59.000Z

37

Second Pan American Geosynthetics Conference & Exhibition GeoAmericas 2012  

E-Print Network [OSTI]

geomembranes and geosynthetic clay liners of various phenolic compounds (phenol, o-cresol, p-cresol, 2Second Pan American Geosynthetics Conference & Exhibition GeoAmericas 2012 Lima, Perú - May 2012 Quantification of the impact of the transfer of phenolic coumpounds through landfill bottom liners J. Sousa

Paris-Sud XI, Université de

38

1 INTRODUCTION The use of geosynthetics in modern landfills involves  

E-Print Network [OSTI]

and hydraulic properties. Geosynthetics also can offer technical advantages in relation to traditional liner at the Contrada Sabetta Dam, Italy (Cazzuffi 1987) and to keep an upstream clay seepage control liner from.g. compacted clays for liners, granular media for drainage layers, and various soils for protective

Zornberg, Jorge G.

39

JACQ: "4316_c037" --2006/10/12 --13:17 --page 1 --#1 Geosynthetics  

E-Print Network [OSTI]

-10 Geotextiles · Geomembranes · Geogrids · Geosynthetic Clay Liners · Geocomposite Sheet Drains · Geocomposite.8 Geogrids 22.4 24.3 29.1 36.8 Geosynthetic clay liners 5.0 5.4 6.1 8.2 Erosion-control products 72.7 77.8 82JACQ: "4316_c037" -- 2006/10/12 -- 13:17 -- page 1 -- #1 37 Geosynthetics Jorge G. Zornberg

Zornberg, Jorge G.

40

Geosynthetics International, 2004, 11, No. 3 Reliability-based stability analysis considering  

E-Print Network [OSTI]

of uncertainty in geosynthetic clay liner (GCL) shear strength on landfill stability is evaluated in this studyGeosynthetics International, 2004, 11, No. 3 Reliability-based stability analysis considering GCL to safety factors typically used in geotechnical practice. KEYWORDS: Geosynthetics, Design, GCL internal

Zornberg, Jorge G.

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

assess clay mineralogy: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Restoration Websites Summary: liner interfaces, such as at the Kettleman Hills landfill (Byrne et al. 1992; Gilbert et al. 1998143 1 INTRODUCTION Geosynthetic clay...

42

applied clay mineralogy: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Restoration Websites Summary: liner interfaces, such as at the Kettleman Hills landfill (Byrne et al. 1992; Gilbert et al. 1998143 1 INTRODUCTION Geosynthetic clay...

43

Comparison of four composite landfill liner systems considering leakage rate and mass flux  

E-Print Network [OSTI]

systems, i.e., Subtitle D com- posite liner system, composite liner system with a geosynthetic clay liner (with a 61 cm (2 feet) or 91.5 cm (3 feet) thick compacted clay liner), were evaluated in termsComparison of four composite landfill liner systems considering leakage rate and mass flux T

44

and-1b drillcore clay: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Restoration Websites Summary: liner interfaces, such as at the Kettleman Hills landfill (Byrne et al. 1992; Gilbert et al. 1998143 1 INTRODUCTION Geosynthetic clay...

45

Geosynthetics -7 ICG -Delmas, Gourc & Girard (eds) 2002 Swets & Zeitlinger, Lisse ISBN 90 5809 523 1 1 INTRODUCTION  

E-Print Network [OSTI]

) and to keep an upstream clay seepage control liner from dessicating in the Mission Dam (today Terzaghi Dam for landfills typically include both geosynthetics and earthen material components, (e.g., compacted claysGeosynthetics - 7 ICG - Delmas, Gourc & Girard (eds) © 2002 Swets & Zeitlinger, Lisse ISBN 90 5809

Zornberg, Jorge G.

46

LEAKAGE THROUGH GEOSYNTHETIC DAM LINING SYSTEMS Christine T. Weber, The University of Texas at Austin  

E-Print Network [OSTI]

clay liner (e.g. 10-9 m/s). In spite of their function as hydraulic barriers, geomembrane liners shouldLEAKAGE THROUGH GEOSYNTHETIC DAM LINING SYSTEMS Christine T. Weber, The University of Texas was conducted to quantify leakage through a geomembrane liner system when subjected to high hydraulic heads

Zornberg, Jorge G.

47

Characterization of secondary collection system flows beneath synthetic composite liners  

SciTech Connect (OSTI)

Secondary liner systems for landfills are becoming more common. Subtitle D may be construed to require secondary liners to meet monitorability requirements for new units. Michigan requires secondary liners in many situations, most commonly at previously contaminated sites to allow for differential monitoring of the new cell(s). Much work has been done in characterizing the flow of liquids through FML/clay composite liners but less is known about flows through FML/geosynthetic clay liner (GCL) composite liners or through isolated FMLs. Flow and chemical data are examined from two Michigan landfills employing different configurations of all synthetic primary and secondary liners. The data is examined for apparent trends. Conclusions are drawn about the application of generic action flow rates as a regulatory standard to these systems and the chemical characteristics of the liquids in secondary systems. Calculations are presented to achieve a realistic action leakage rate for these systems.

Groenleer, M.E. [Wenck Associates, Inc., Grand Rapids, MI (United States)

1995-12-31T23:59:59.000Z

48

Hydrogeological Environmental Assessment of Sanitary Landfill Project at Jammu City, India  

E-Print Network [OSTI]

require the use of geosynthetic clay liners or membranes forfrom rainstorms. The geosynthetic clay liner is provided inthe liner technology of geosynthetic clay materials can

Nagar, Bharat Bhushan; Mirza, Umar Karim

2002-01-01T23:59:59.000Z

49

Geosynthetics in a salinity-gradient solar pond environment  

SciTech Connect (OSTI)

This paper describes the latest in salinity-gradient solar pond lining systems. The high-temperature, high-salinity environment unique to a salinity-gradient solar pond resulted in failure of the geomembrane liner at the El Paso Solar Pond Test Facility after only eight years of operation. Research involved in pond reconstruction led to the selection of a lining system consisting of a flexible polypropylene (PP) geomembrane for the sidewalls and a specially formulated geosynthetic clay liner (GCL) on the bottom of the pond. The two liners have been installed and a comprehensive test program is being conducted to measure their performance. The environment encountered in a salinity-gradient solar pond will be discussed as well as material selection criteria and the design of the two liners. Preliminary results of the GCL performance monitoring will also be presented.

Lichwardt, M.A.; Comer, A.I.

1997-11-01T23:59:59.000Z

50

Landfill liner interface strengths from torsional-ring-shear tests  

SciTech Connect (OSTI)

A torsional-ring-shear apparatus and test procedure are described for measuring soil/geosynthetic and geosynthetic/geosynthetic interface strengths. Typical interface strengths are presented for a double-composite liner system and the relevancy of ring-shear strengths is illustrated using the slope failure at the Kettleman Hills Waste Repository, Kettleman City, Calif. The results of undrained ring-shear tests show that for a clay/geomembrane interface: (1) interface strength depends on plasticity and compaction water content of the clay, and the applied normal stress; (2) interface strengths measured with the torsional-ring-shear apparatus are in excellent agreement with back-calculated field strengths; and (3) peak and residual interface failure envelopes are nonlinear, and the nonlinearity should be modeled in stability analyses instead of as a combination of cohesion and friction angle. Design recommendations for interface strengths and stability analyses are also presented.

Stark, T.D. (Univ. of Illinois, Urbana, IL (United States)); Poeppel, A.R. (Langan Engineering Associates, Inc., New York, NY (United States))

1994-03-01T23:59:59.000Z

51

Rencontres Gosynthtiques -9-11 avril 2013, Dijon MESURE DU FLUX DANS LES GOFILMS BENTONITIQUES  

E-Print Network [OSTI]

BENTONITIQUES FLOW RATE MEASUREMENT IN MULTICOMPONENT GEOSYNTHETIC CLAY LINERS Camille BARRAL1 , Nathalie TOUZE /d. Keywords: geosynthetics, geomembrane, multicomponent geosynthetic clay liner, flow rate. 1

Boyer, Edmond

52

GEOSYNTHETIC DAM LINING SYSTEMS By: Christine T. Weber1  

E-Print Network [OSTI]

of geosynthetic liners for dams involves heads much larger than those in environmental applications. Accordingly. Geosynthetics have been used in a large number of geotechnical, transportation, environmental and hydraulic and industrial use. As dams age, deterioration and structural damage are of major concern as they can lead

Zornberg, Jorge G.

53

Bentonite mat demonstration: Field performance evaluation of an alternative geosynthetic composite cover system  

SciTech Connect (OSTI)

The Savannah River Site is investigating an alternative RCRA closure cover system configuration for hazardous solid-waste landfills. The bentonite mat demonstration is a field performance test of an alternative composite geosynthetic material cover configuration. The bentonite mat demonstration consists of four test pads; each test pad is a compacted sandy clay layer 30 ft wide, 80 ft long, and 2 ft deep. Three of the test pads will be blanketed with one of the commercially available bentonite mats (geosynthetic clay liner), then overlain by a flexible membrane liner to form the composite barrier. The remaining test pad will not contain any geosynthetic materials and will be used as the control pad for the demonstration. Each test pad will be constructed over a 4-ft sand layer. A series of access pipes will be embedded in the sand layer to provide a means for evacuating portions of the sand layer in order to create underlying cavities, thus inducing localized subsidence in the test pad. Material stress data will be collected to identify the composite barrier failure point. Infiltration data will be collected for each test pad to correlate permeability as a function of deflection. At the conclusion of the subsidence testing, the test pads will be dismantled to identify the failure mechanisms of the barriers. A finite-element analysis computer model is being developed to predict the structural behavior of the composite barrier system. The bentonite mat demonstration data will be used to verify this model, which will serve as a diagnostic tool for future designs. The formulation and execution of this demonstration is one element in achieving regulatory approval of the composite geosynthetic materials alternative cover system design configuration.

Serrato, M.G. [Westinghouse Savannah River Co., Aiken, SC (United States). Savannah River Site

1994-12-31T23:59:59.000Z

54

adesiva da interface: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in a landfill cap or base liner systemi Internal and Interface Shear Strength of Geosynthetic Clay Liners (GCLs) by John Scott Mc Strength of Geosynthetic Clay Liners (GCLs)...

55

abductor muscle strength: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in a landfill cap or base liner systemi Internal and Interface Shear Strength of Geosynthetic Clay Liners (GCLs) by John Scott Mc Strength of Geosynthetic Clay Liners (GCLs)...

56

Rencontres Gosynthtiques -9-11 avril 2013, Dijon VALUATION DE LA PERFORMANCE D'UN GOSYNTHTIQUE  

E-Print Network [OSTI]

on two geosynthetic clay liners (GCL) samples from a landfill cover. Tests performed show: geosynthetic clay liner, landfill, cover, durability 1. Introduction La performance à long terme des

Boyer, Edmond

57

very good point that the disturbance factor "D": introduced by Hoek et al. 2002 and which is related to blasting, caused  

E-Print Network [OSTI]

geomembranes GMs and geosynthetic clay liners GCLs . The discussers have performed shear tests using similar

Zornberg, Jorge G.

58

Rencontres Gosynthtiques -9-11 avril 2013, Dijon COMPORTEMENT DES GOSYNTHTIQUES BENTONITIQUES DANS LES  

E-Print Network [OSTI]

of hydration-desiccation cycles experienced by the GCLs. Keywords: geosynthetic clay liner, dam, flow

Boyer, Edmond

59

activity involving yb-1: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

60

adenylyl cyclase involved: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

acute hepatic failure: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

62

antagonist labedipinedilol-a involves: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

63

arrester failure rate: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

64

analysis involving tvs-m: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

65

acetobutylicum involving non-coding: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

66

antigens predominant involvement: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

67

antiretroviral therapy failure: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

68

aedes aegypti involvement: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

69

acute liver failure: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

70

acute renal failure: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

71

acute-on-chronic liver failure: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

72

adenosinergic system involvement: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

73

antiretroviral drug failure: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

74

adult respiratory failure: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

75

adjuvant involved field: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

76

alternaria alternata involves: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

77

antinociception involves endogenous: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GEOSYNTHETICS Engineering Websites Summary: failure involving a reinforced geosynthetic clay liner in a sedimentation pond at a waste containment liners to hydrate during on-site...

78

Geo-Institute Graduate Student Organization student chapter at The University of Michigan is proud to present  

E-Print Network [OSTI]

.g., pipes, culverts) and landfill geosynthetics (e.g., geomembranes, geosynthetic clay liners) using Geotechnical Journal, Geotextiles and Geomembranes, and Geosynthetics International. His achievements have also been recognized with the Geosynthetics Award and the Canadian Geotechnical Colloquium from the Canadian

Kamat, Vineet R.

79

KSCE Journal of Civil Engineering (2011) 15(6):1033-1039 DOI 10.1007/s12205-011-1293-7  

E-Print Network [OSTI]

, composite liner system with a Geosynthetic Clay Liner (GCL) instead of low permeability compacted soil. Keywords: solid waste, leachate, composite liner system, geosynthetic clay liner, diffusion, contaminant; Bezza and Ghomari, 2008), Geosynthetic Clay Liners (GCL) (Malusis and Shackelford, 2002, 2004; Rowe et

80

Internal and Interface Shear Strength of  

E-Print Network [OSTI]

i Internal and Interface Shear Strength of Geosynthetic Clay Liners (GCLs) by John Scott Mc Strength of Geosynthetic Clay Liners (GCLs) Geosynthetic Clay Liners (GCLs) are prefabricated geocomposite materials used as an alternative to compacted clay liners in hydraulic barriers. They often offer hydraulic

Zornberg, Jorge G.

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Rencontres Gosynthtiques -9-11 avril 2013, Dijon DBITS DANS UNE TANCHIT COMPOSITE GOMEMBRANE  

E-Print Network [OSTI]

years regarding the behaviour of geosynthetic clay liners (GCLs) as part of a composite liner composed, geosynthetic clay liner, bituminous geomembrane, flow rate 1. Introduction Les géomembranes bitumineuses (GM to an alternative design for a canal projected in France at the moment. Keywords: Geosynthetics, composite liners

Paris-Sud XI, Université de

82

THEORETICAL EFFECT OF BENTONITE MIGRATION ON CONTAMINANT TRANSPORT  

E-Print Network [OSTI]

THEORETICAL EFFECT OF BENTONITE MIGRATION ON CONTAMINANT TRANSPORT THROUGH GEOSYNTHETIC CLAY LINERS TRANSPORT THROUGH GEOSYNTHETIC CLAY LINERS Jason H. FitzSimmons1 and Timothy D. Stark2 ABSTRACT: Since the introduction of geosynthetic clay liners (GCLs) to waste containment facilities, one of the major concerns

83

1 INTRODUCTION In recent years there have been many advances in  

E-Print Network [OSTI]

to the use of geosynthetics such as geomembranes and geosyn- thetic clay liners (GCLs) as contaminant lining, i.e. geomembranes and geosynthetic clay liners. Geomembranes are defined in the Rec- ommended) sheet used in civil engineering applications. Geosynthetic clay liners (GCLs) are defined

Paris-Sud XI, Université de

84

Technical Paper by H.T. Eid, T.D. Stark and C.K. Doerfler  

E-Print Network [OSTI]

ON INTERNAL SHEAR STRENGTH OF A REINFORCED GEOSYNTHETIC CLAY LINER ABSTRACT: Torsional ring shear tests were-punched geosynthetic clay liner (GCL) under different normal stresses. The test results suggest that the internal shear, and quantity of needie-punched fibers. KEYWORDS: Geosynthetic clay liner, Normal stress, Strength, Shear rate

85

Rencontres Gosynthtiques 2011 INFLUENCE DE LA MASSE SURFACIQUE DE BENTONITE SUR LE FLUX  

E-Print Network [OSTI]

surfacique. ABSTRACT ­ Flow and hydraulic conductivity of 9 specimens of a given geosynthetic clay liner were for the geosynthetic clay liner in order to properly estimate its hydraulic efficiency. Keywords: Geosynthetic clay liners, measurement, flow rate, hydraulic conductivity, mass per unit area. 1. Introduction Les

Paris-Sud XI, Université de

86

Internal and Interface Shear Strength of  

E-Print Network [OSTI]

1 Internal and Interface Shear Strength of Geosynthetic Clay Liners (GCLs): Additional Data by John Liners (GCLs): Additional Data Geosynthetic Clay Liners (GCLs) are prefabricated geocomposite materials., Zornberg, Jorge G., and Swan, Jr., Robert H. Internal and Interface Shear Strength of Geosynthetic Clay

Zornberg, Jorge G.

87

Technical Paper by T.D. Stark and H.T. Eid SHEAR BEHAVIOR OF REINFORCED  

E-Print Network [OSTI]

Technical Paper by T.D. Stark and H.T. Eid SHEAR BEHAVIOR OF REINFORCED GEOSYNTHETIC CLAY LINERS strength between a geomembrane and a reinforced geosynthetic clay liner (GeL), and the internal shear: Geosynthetic clay liner, Strength, Stability, Slope, Shearbox test, Shear rate, Ring shear test. AUTHORS: T

88

Frost effects on soil liner systems results of a research project  

SciTech Connect (OSTI)

A research study was completed on the impact of frost action (freeze-thaw) on compacted clay liners, sand-bentonite liners, and geosynthetic clay liners (GCLs) under field and laboratory conditions. The goal of the research discussed in this paper was to improve understanding of the effect of freeze-thaw on these parts of liner systems so that design and construction could be improved. The U.S. Army Corps Cold Regions Research Engineering Laboratory (CRREL), CH2M HILL, Inc., and a team of industrial partners joined together in a cooperative effort to fund and complete this study under the U.S. Army Corps Construction Productivity Advancement Research (CPAR) program. IN 1992 and 1993, five large-scale compacted-soil test pads, and nine GCL test pans were constructed at WMX, Inc.`s Parkview Landfill in Milwaukee, Wisconsin. Two of the large-scale test pads were constructed of a low-plasticity clay, two were of a medium-plasticity clay, and one was a sand-bentonite mixture manufactured in a mobile mixer onsite. Three different GCL products were used in the GCL test pans. All of these materials were tested in the field for at least one winter; in the CRREL laboratory in Hanover, New Hampshire; and at the University of Wisconsin-Madison. Results of these tests indicate that the hydraulic conductivity of compacted clay increases significantly in the field after one winter of freezing. In laboratory testing, the use of thin-walled shelby tubes changes the clay structure and masks the effect of freeze-thaw. These tests indicated that the detrimental effects of freeze-thaw were reversed by increasing confining pressure. The hydraulic conductivity of the sand-bentonite test pad was found to be below 1x10{sup {minus}8} cm/s after two winter seasons. The GCLs showed no increase in hydraulic conductivity from freeze-thaw action. However, the field test results raised questions that need to be resolved.

Erickson, A.E. [CH2M Hill, Inc., Milwaukee, WI (United States); Chamberlain, E.J. [Army Cold Regions Research and Engineering Laboratory, Hanover, NH (United States); Benson, C.H. [Univ. of Wisconsin, Madison, WI (United States)

1995-12-31T23:59:59.000Z

89

SUMMARY OF ENVIRONMENTAL SAMPLING DATA: The disposal site was...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

with the approved plans and operating permit. The landfill has a clay liner, a geosynthetic liner, a leachate collection system to prevent and contain releases into the...

90

MONITORING LANDFILL COVER BY ELECTRICAL RESISTIVITY1 TOMOGRAPHY ON AN EXPERIMENTAL SITE2  

E-Print Network [OSTI]

with geosynthetics44 (geomembranes or Geosynthetic Clay Liners), depending on the date of closure (Silvestre et45 al: landfill cover, gravelly clay material, heterogeneity, compaction, electrical30 resistivity, multivariate

Paris-Sud XI, Université de

91

I Designer's Forum I By Dr. Timothy Stark and Gregory N.  

E-Print Network [OSTI]

of a compacted clay liner and geosynthetic materials. The geosynthetic components routinely include layers resistance betWeen it and another geosynthetic component or the compacted clay.This article describes the sideslopesassteeply aspossible.To reduce leakage,usuallya liner system that incorporates a geomembrane is installed

92

11681Federal Register / Vol. 74, No. 52 / Thursday, March 19, 2009 / Rules and Regulations on April 8, 2008 is hereby incorporated  

E-Print Network [OSTI]

/or operator may install a geosynthetic clay liner as an alternative bottom liner system in Phase VI. (2 depth of leachate on the liner. (5) The owner and/or operator shall submit reports to the Director

93

Department of Civil & Environmental Engineering Geotechnical Group Seminar Series  

E-Print Network [OSTI]

liners with a geosynthetic clay liner (GCL) is typically much less than for composite liners fraction of that expected for either a geomembrane (GM) or clay liner (CL) alone. However, the calculated leakage through holes in a GM in direct contact with a clay liner is typically substantially smaller than

Kamat, Vineet R.

94

alcohol-related aggression implications: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

95

antiangiogenic therapy implications: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

96

alpha-lipoic acid implications: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

97

acalyptophis peronii comparison: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

provides a comparison of the peak and large displacementgeosynthetic, geosynthetic clay liner (GCL)geomembrane, and soilgeosynthetic interfaces. This comparison shows an...

98

acid tetrahydrate implications: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

99

amoebic keratitis comparison: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

provides a comparison of the peak and large displacementgeosynthetic, geosynthetic clay liner (GCL)geomembrane, and soilgeosynthetic interfaces. This comparison shows an...

100

acetabular labral tear: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Websites Summary: strength between a geomembrane and a reinforced geosynthetic clay liner (GeL), and the internal shear reinforcing fiber pull-out andor tearing; and,...

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

analysis implicates egr1: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

102

artery calcification comparison: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

provides a comparison of the peak and large displacementgeosynthetic, geosynthetic clay liner (GCL)geomembrane, and soilgeosynthetic interfaces. This comparison shows an...

103

acetabular labral tears: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Websites Summary: strength between a geomembrane and a reinforced geosynthetic clay liner (GeL), and the internal shear reinforcing fiber pull-out andor tearing; and,...

104

atypical antipsychotics implications: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

105

artery stenosis comparison: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

provides a comparison of the peak and large displacementgeosynthetic, geosynthetic clay liner (GCL)geomembrane, and soilgeosynthetic interfaces. This comparison shows an...

106

alustab tna td: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Websites Summary: strength between a geomembrane and a reinforced geosynthetic clay liner (GeL), and the internal shear reinforcing fiber pull-out andor tearing; and,...

107

Rencontres gosynthtiques 2011 PERFORMANCE D'UN GSB DANS UNE COUVERTURE D'INSTALLATION DE  

E-Print Network [OSTI]

couverture du site est discutée. Mots-clés : couverture, GSB, ISDND ABSTRACT ­ Six geosynthetic clay liner

Boyer, Edmond

108

arabia terra implications: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

109

aortic stenosis implications: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

110

acinar cells implication: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

111

ahr-calux assay comparison: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

provides a comparison of the peak and large displacementgeosynthetic, geosynthetic clay liner (GCL)geomembrane, and soilgeosynthetic interfaces. This comparison shows an...

112

adenocarcinoma therapeutic implications: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

113

acid phosphatases implications: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100Landfill Instability and Its Implications for Operation, Construction,...

114

Jorge G. Zornberg, Ph.D., P.E. Dr. Zornberg, P.E., is the Fluor Centennial Associate Professor at the U. of Texas at Austin. He has over 20 years  

E-Print Network [OSTI]

, the shear strength of geosynthetic clay liners, the analysis of exposed geomembrane covers, the hydraulic involving the collapse of earth retaining structures and failure of geosynthetic liners. Prof. Zornberg has in geosynthetics, geotechnical and geoenvironmental engineering. He earned his B.S. from the National U. of Cordoba

Zornberg, Jorge G.

115

Effect of Shear Displacement Rate on the Internal Shear Strength of GCLs J. S. McCartney1  

E-Print Network [OSTI]

shear strength of geosynthetic clay liners (GCLs) is to replicate behavior noted in the field. However a wider range of shear displacement rates. Introduction The internal shear strength of geosynthetic clay are prefabricated geocomposite materials used in hydraulic barriers as an alternative to compacted clay liners

Zornberg, Jorge G.

116

Thse en cotutelle prsente  

E-Print Network [OSTI]

of the geosynthetic clay liners, and to Mrs. Graça Tomé for revising the English. Thanks must also go MIGRATION THROUGH GEOMEMBRANE SEAMS AND THROUGH THE INTERFACE BETWEEN GEOMEMBRANE AND GEOSYNTHETIC CLAY LINER Soutenue le 23 Mars 2005 Jury Patrick PIERSON Directeur de thèse Luís LEMOS Directeur de thèse

Paris-Sud XI, Université de

117

Landfill Instability and Its Implications Operation, Construction, and Design  

E-Print Network [OSTI]

landfill waste slide, a 300,000 cubic yard landfill failure involving a geosynthetic clay liner, and a 100 occurred involving liner systems during construction and waste containment closures. Recently an older

118

asian villages asia: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GCLS AND BITUMINOUS GEOMEMBRANES H. Bannour1 regarding the behavior of geosynthetic clay liners (GCLs) as part of a composite liner, focused Paris-Sud XI, Universit de 68...

119

asian regional conference: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GCLS AND BITUMINOUS GEOMEMBRANES H. Bannour1 regarding the behavior of geosynthetic clay liners (GCLs) as part of a composite liner, focused Paris-Sud XI, Universit de 15...

120

1 INTRODUCTION Since reinforced soil technique began to be used in  

E-Print Network [OSTI]

be waterproofed, e.g., by a geomembrane or a geosynthetic clay liner, to prevent water from en- tering of backfill on the performance of geosynthetic reinforced soil walls (Ehrlich et al. 1997). However in geosynthetic stabilized earth (GSE) walls has not been recom- mended by different standards specifications

Zornberg, Jorge G.

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

DRAFT TECHNICAL GUIDANCE DOCUMENT ON STATIC AND SEISMIC SLOPE STABILITY FOR SOLID WASTE  

E-Print Network [OSTI]

STRENGTH OF GEOSYNTHETIC CLAY LINERS Page 51 I GCL SLOPE DESIGN Page 52 II. SHEAR STRENGTH TESTING OF GCLs IN GEOSYNTHETIC MATERIALS Page 33 5.0 ENGINEERING PROPERTIES OF MUNICIPAL SOLID WASTE Page 36 I. STATIC PROPERTIES OF WASTE Page 36 II. DYNAMIC PROPERTIES OF WASTE Page 36 6.0 SHEAR STRENGTH OF GEOSYNTHETIC INTERFACES Page

122

Oct. 2013, Volume 7, No. 10 (Serial No. 71), pp. 1253-1259 Journal of Civil Engineering and Architecture, ISSN 1934-7359, USA  

E-Print Network [OSTI]

.g., by a geomembrane or a geosynthetic clay liner, to prevent water from entering the backfill zone from the surface of marginal backfills in GSE (geosynthetic stabilized earth) walls has not been recommended by different focused at the geosynthetic technologies applied to geotechnical engineering. E-mail: fportelinha

Zornberg, Jorge G.

123

Introduction The proposed Long Baseline Neutrino Experiment (LBNE) beamline is planned to deliver  

E-Print Network [OSTI]

Geomembrane Water impermeable barrier 1 mm minimum thickness Geosynthetic Clay Liner Acts as a hydraulic barrier ~6mm thick Equivalent to 0.3 - 0.6 m of clay Geonet High capacity to convey fluids. Used

McDonald, Kirk

124

Geomembranes for Canal Lining Geosynthetics 2009  

E-Print Network [OSTI]

for this application including PVC, HDPE, LDPE, CSPE, and EPDM geomembranes. Frequently these geomembranes require for canal liners based on field test programs. The first such test program was started with a PVC test to evaluate the effectiveness of a range of canal lining alternatives. Traditionally, PVC geomembranes have

125

Combustor liner cooling system  

DOE Patents [OSTI]

A combustor liner is disclosed. The combustor liner includes an upstream portion, a downstream end portion extending from the upstream portion along a generally longitudinal axis, and a cover layer associated with an inner surface of the downstream end portion. The downstream end portion includes the inner surface and an outer surface, the inner surface defining a plurality of microchannels. The downstream end portion further defines a plurality of passages extending between the inner surface and the outer surface. The plurality of microchannels are fluidly connected to the plurality of passages, and are configured to flow a cooling medium therethrough, cooling the combustor liner.

Lacy, Benjamin Paul; Berkman, Mert Enis

2013-08-06T23:59:59.000Z

126

Second Pan American Geosynthetics Conference & Exhibition GeoAmericas 2012  

E-Print Network [OSTI]

material properties, the load transfer mechanism at the interface, and the shape of the load-strain curve during pullout (Gupta, 2009). In general, these analytical models are used to predict the load- displacement curve of soil-geosynthetic system under confinement. The analytical models for pullout test

Zornberg, Jorge G.

127

Geosynthetics 2013 April 1-4, Long Beach, California  

E-Print Network [OSTI]

force while their elongation is measured. These tests are performed under controlled temperature equipment. A biaxial geogrid and a nonwoven geotextile were used in these tests, which comprised creepGeosynthetics 2013 April 1-4, Long Beach, California Confined-accelerated Creep Tests

Zornberg, Jorge G.

128

Effect of Geomembrane Texturing on GCL -Geomembrane Interface Shear John S. McCartney1  

E-Print Network [OSTI]

(GMs) directly above a geosynthetic clay liner (GCL) in hydraulic barrier systems such as landfill GMs and single compacted clay layers. Stability is a major concern for side slopes in bottom liner covers or bottom liners has led to significantly improved hydraulic performance over the use of single

Zornberg, Jorge G.

129

CANADIAN GEOTECHNICAL CONFERENCE JOINT IAH-CNC/CGS CONFERENCE  

E-Print Network [OSTI]

Jorge G. Zornberg, University of Texas at Austin, Austin, TX ABSTRACT: Variability in geosynthetic clay liner (GCL) internal and GCL-geomembrane (GM) interface shear strength measured using large-scale direct

Zornberg, Jorge G.

130

188 Rev. Tecnol. Fortaleza, v. 30, n. 2, p. 188-197, dez. 2009. Paulo Csar Lodi, Jorge Gabriel Zornberg e Benedito de Souza Bueno  

E-Print Network [OSTI]

materials like geomembranes, geotextiles, geosynthetics clay liners and/ or a combination from all those. Liner. Geosynthetics. 1 Introdução A produção de resíduos sólidos urbanos tem aumentado aplicados a aterros sanitários Resumo Os liners são barreiras impermeáveis utilizadas em aterros sanitários

Zornberg, Jorge G.

131

Evaluation of alternative leachate liner materials  

E-Print Network [OSTI]

The purpose of this study is to evaluate alternative landfill liner materials that could be utilized in conjunction with current liners in order to improve the liner's performance by preventing the release of hazardous chemicals into the subsurface...

Biles, Daniel Franklin

1994-01-01T23:59:59.000Z

132

Discussion of "Analysis of a Large Database of GCL Internal Shear  

E-Print Network [OSTI]

.edu The authors have presented an extensive and valuable study on the internal shear strength of geosynthetic clay liners GCLs . The discusser has also performed extensive tests of these materials and can comment for quality geosynthetic shear testing. Some of the test data in the authors' database are also found

Zornberg, Jorge G.

133

LATERAL LANDFILL GAS MIGRATION: CHARACTERIZATION AND  

E-Print Network [OSTI]

, where waste was buried without building a compacted clay liner at the bottom of the cells. Exploitation of the site. After capping the old cells with a geosynthetic liner, areas of poor crop production (zone Zl and transversal section studied. The site was initially exploited for clay and later filled with domestic waste

Boyer, Edmond

134

Geosynthetics International, 2003, 10, No. 2 Air channel testing of thermally bonded PVC  

E-Print Network [OSTI]

Geosynthetics International, 2003, 10, No. 2 Air channel testing of thermally bonded PVC (PVC) possesses excellent thermal welding characteristics, such as a wide thermal seaming range and recommend that destructive testing of PVC geomembranes be reduced and possibly discontinued

135

Sepiolite as an Alternative Liner Material in Municipal Solid Waste Landfills  

E-Print Network [OSTI]

Sepiolite as an Alternative Liner Material in Municipal Solid Waste Landfills Yucel Guney1 ; Savas in municipal solid waste landfills. However, natural clays may not always provide good contaminant sorption in solid waste landfills. DOI: 10.1061/ ASCE 1090-0241 2008 134:8 1166 CE Database subject headings

Aydilek, Ahmet

136

Geosynthetics and Geosynthetic-Engineered Soil Structures, Symposium sponsored by the ASCE Engineering Mechanics Division, honoring Prof. R.M. Koerner, McMat 2005, Baton Rouge, Louisiana June 2, 2005.  

E-Print Network [OSTI]

Geosynthetics and Geosynthetic-Engineered Soil Structures, Symposium sponsored by the ASCE Engineering Mechanics Division, honoring Prof. R.M. Koerner, McMat 2005, Baton Rouge, Louisiana June 2, 2005. Limit analysis of reinforced soils and limit loads on reinforced soil slabs Radoslaw L. Michalowski1

Michalowski, Radoslaw L.

137

Segmented ceramic liner for induction furnaces  

DOE Patents [OSTI]

A non-fibrous ceramic liner for induction furnaces is provided by vertically stackable ring-shaped liner segments made of ceramic material in a light-weight cellular form. The liner segments can each be fabricated as a single unit or from a plurality of arcuate segments joined together by an interlocking mechanism. Also, the liner segments can be formed of a single ceramic material or can be constructed of multiple concentric layers with the layers being of different ceramic materials and/or cellular forms. Thermomechanically damaged liner segments are selectively replaceable in the furnace. 5 figs.

Gorin, A.H.; Holcombe, C.E.

1994-07-26T23:59:59.000Z

138

An Evaluation of Long-Term Performance of Liner Systems for Low-Level Waste Disposal Facilities  

SciTech Connect (OSTI)

Traditional liner systems consisting of a geosynthetic membrane underlying a waste disposal facility coupled with a leachate collection system have been proposed as a means of containing releases of low-level radioactive waste within the confines of the disposal facility and thereby eliminating migration of radionuclides into the vadose zone and groundwater. However, this type of hydraulic containment liner system is only effective as long as the leachate collection system remains functional or an overlying cover limits the total infiltration to the volumetric pore space of the disposal system. If either the leachate collection system fails, or the overlying cover becomes less effective during the 1,000’s of years of facility lifetime, the liner may fill with water and release contaminated water in a preferential or focused manner. If the height of the liner extends above the waste, the waste will become submerged which could increase the release rate and concentration of the leachate. If the liner extends near land surface, there is the potential for contamination reaching land surface creating a direct exposure pathway. Alternative protective liner systems can be engineered that eliminate radionuclide releases to the vadose zone during operations and minimizing long term migration of radionuclides from the disposal facility into the vadose zone and aquifer. Non-traditional systems include waste containerization in steel or composite materials. This type of system would promote drainage of clean infiltrating water through the facility without contacting the waste. Other alternatives include geochemical barriers designed to transmit water while adsorbing radionuclides beneath the facility. Facility performance for a hypothetical disposal facility has been compared for the hydraulic and steel containerization liner alternatives. Results were compared in terms of meeting the DOE Order 435.1 low-level waste performance objective of 25 mrem/yr all-pathways dose during the 1) institutional control period (0-100 years), compliance period (0-1000 years) and post-compliance period (>1000 years). Evaluation of the all pathway dose included the dose from ingestion and irrigation of contaminated groundwater extracted from a well 100 meters downgradient, in addition to the dose received from direct contact of radionuclides deposited near the surface resulting from facility overflow. Depending on the disposal facility radionuclide inventory, facility design, cover performance, and the location and environment where the facility is situated, the dose from exposure via direct contact of near surface deposited radionuclides can be much greater than the dose received via transport to the groundwater and subsequent ingestion.

Arthur S. Rood; Annette L. Schafer; A. Jeffrey Sondrup

2011-03-01T23:59:59.000Z

139

Uranium-mill-tailings remedial-action project (UMTRAP) cover and liner technology development project  

SciTech Connect (OSTI)

Cover and liner systems for uranium mill tailings in the United States must satisfy stringent requirements regarding long-term stability, radon control, and radionuclide and hazardous chemical migration. The cover placed over a tailings pile serves three basic purposes: (1) to reduce the release of radon, (2) to prevent the intrusion of plant roots and burrowing animals into the tailings, and (3) to limit surface erosion. The liner placed under a tailings pile prevents the migration of radionuclides and hazardous chemicals to groundwater. Pacific Northwest Laboratory is developing and evaluating cover and liner systems that meet these objectives and conform to federal standards. The cover and liner technology discussed in this paper involves: (1) single and multilayer earthen cover systems, (2) asphalt emulsion radon barrier systems, (3) biobarrier systems, (4) revegetation and rock covers, and (5) asphalt, clay, and synthetic liner systems. These systems have been tested at the Grand Junction, Colorado, tailings pile, where they have been shown to effectively reduce radon releases and radionuclide and chemical migration.

Hartley, J.N.; Gee, G.W.; Freeman, H.D.; Cline, J.F.; Beedlow, P.A.; Buelt, J.L.; Relyea, J.R.; Tamura, T.

1982-01-01T23:59:59.000Z

140

Compacted Soil Liner Interface Strength Importance  

E-Print Network [OSTI]

Case Study Compacted Soil Liner Interface Strength Importance Timothy D. Stark, F.ASCE1 ; Hangseok interface is not the geomembrane (GM)/compacted low-permeability soil liner (LPSL) but a soil­soil interface placing the cover soil from bottom to top. DOI: 10.1061/(ASCE)GT.1943-5606 .0000556. © 2012 American

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Shock wave absorber having a deformable liner  

DOE Patents [OSTI]

This invention discloses a shock wave absorber for a piping system carrying liquid. The absorber has a plastically deformable liner defining the normal flow boundary for an axial segment of the piping system, and a nondeformable housing is spaced outwardly from the liner so as to define a gas-tight space therebetween. The flow capacity of the liner generally corresponds to the flow capacity of the piping system line, but the liner has a noncircular cross section and extends axially of the piping system line a distance between one and twenty times the diameter thereof. Gas pressurizes the gas-tight space equal to the normal liquid pressure in the piping system. The liner has sufficient structural capacity to withstand between one and one-half and two times this normal liquid pressures; but at greater pressures it begins to plastically deform initially with respect to shape to a more circular cross section, and then with respect to material extension by circumferentially stretching the wall of the liner. A high energy shock wave passing through the liner thus plastically deforms the liner radially into the gas space and progressively also as needed in the axial direction of the shock wave to minimize transmission of the shock wave beyond the absorber.

Youngdahl, C.K.; Wiedermann, A.H.; Shin, Y.W.; Kot, C.A.; Ockert, C.E.

1983-08-26T23:59:59.000Z

142

CLAY AND SHALE--2002 18.1 CLAY AND SHALE  

E-Print Network [OSTI]

CLAY AND SHALE--2002 18.1 CLAY AND SHALE By Robert L. Virta Domestic survey data and tables were clay, bentonite, common clay and shale, fire clay, fuller's earth, and kaolin. Ball clays consist of feldspars, biotite, and quartz. Common clay and shale contain illite and chlorite as major components. Fire

143

MiniBooNE liner integrity study  

SciTech Connect (OSTI)

The civil construction for the MiniBooNE project includes a 50-m decay path and beam absorbers. The decay path is a six-foot diameter corrugated metal pipe (CMP). To prevent activation of the groundwater, the CMP and beam absorbers are surrounded by crushed aggregate, and enclosed in a double-walled geotextile membrane, referred to as the liner. The minimum distance from the beam centerline to the liner is 10 feet. The double-wall construction of the liner forms three regions, the containment volume, the interstitial volume, and the exterior. Each of these volumes is connected to monitoring wells at both the upstream and downstream ends of the decay volume, i.e. a total of six monitoring pipes extend to the surface. To confirm the integrity of the liner system following its placement, the firm Earth Tech was contracted to perform tests. Michael Williams was the primary contact with Earth Tech. The following is the report from Earth Tech, with minor changes in the interest of clarity. A sketch of the decay region is shown; only one of the layers of the liner is shown, and only one monitoring port. At the time of these tests, the excavation in general, but particularly in the vicinity of the monitoring wells had not been backfilled in the final grade, as indicated by the dashed lines.

Ray Stefanski, Phil Martin and Jeff Sims

2001-11-09T23:59:59.000Z

144

Clay and SHale--2004 18.1 Clay and Shale  

E-Print Network [OSTI]

Clay and SHale--2004 18.1 Clay and Shale By Robert l. Virta Domestic survey data and tables were). Common Clay and Shale.--In 2004, 162 companies produced common clay and shale from approximately 459 pits in 41 States and Puerto Rico. In States not reporting production, common clay and shale probably

145

Modified clay sorbents  

DOE Patents [OSTI]

A novel modified clay sorbent and method of treating industrial effluents to remove trace pollutants, such as dioxins, biphenyls, and polyaromatics such as benzo(a)pyrene and pentachlorophenol. The novel clay sorbent has a composite structure in which the interlayer space of an expandable clay, such as smectite, is filled with polyvalent or multivalent inorganic cations which forces weaker surfactant cations to locate on the surface of the clay in such an orientation that the resulting composite is hydrophilic in nature. A specific example is cetylpyridinium-hydroxy aluminum-montmorillonite. In certain embodiments, a non-expanding clay, such as kaolinite, is used and surfactant cations are necessarily located on an external surface of the clay. A specific example is cetylpyridinium-kaolinite.

Fogler, H. Scott (Ann Arbor, MI); Srinivasan, Keeran R. (Livonia, MI)

1990-01-01T23:59:59.000Z

146

How to run and cement liners  

SciTech Connect (OSTI)

Testing the top of a liner after it has been cemented is necessary to ensure a well's integrity. However, whether done with or without packers there are potential problems attendant with either method that can occur if the tests are not properly engineered. A discussion of these problems and ways to avoid them is presented.

Bowman, G.R.; Sherer, B.

1988-09-01T23:59:59.000Z

147

CLAY AND SHALE--2001 18.1 CLAY AND SHALE  

E-Print Network [OSTI]

operated approximately 633 clay and shale pits or quarries. The largest 20 companies, many with multiple

148

E-Print Network 3.0 - ablative lithium liner Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

9 Defect Analysis of Vehicle Compressed Natural Gas Summary: Process Fitting Internal Plastic Liner External Composite Layer Metal Fitting 12;HDPE Cylinder Liner......

149

E-Print Network 3.0 - acrylic denture liners Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

11 Defect Analysis of Vehicle Compressed Natural Gas Summary: Process Fitting Internal Plastic Liner External Composite Layer Metal Fitting 12;HDPE Cylinder Liner......

150

Nondestructive evaluation of environmental barrier coatings in CFCC combustor liners.  

SciTech Connect (OSTI)

Advanced combustor liners fabricated of SiC/SiC continuous fiber-reinforced ceramic composite (CFCC) and covered with environmental barrier coatings (EBCs) have been successfully tested in Solar Turbines Inc. field engines. The primary goal for the CFCC/EBC liners is to reach a 30,000-h lifetime. Because the EBCs, when applied on the hot surfaces of liners, protect the underlying CFCC from oxidation damage, their performance is critical in achieving the lifetime goal. To determine CFCC/EBC liner condition and assess operating damage, the liners were subjected to nondestructive evaluation (NDE) during various processing stages, as well as before and after the engine test. The NDE techniques included pulsed infrared thermal imaging, air-coupled ultrasonic scanning, and X-ray computerized tomography. It was found that EBC damage and spallation depend on the condition of the CFCC material. The NDE results and correlations with destructive examination are discussed.

Sun, J. G.; Benz, J.; Ellingson, W. A.; Kimmel, J. B.; Price, J. R.; Energy Technology; Solar Turbines, Inc

2007-01-01T23:59:59.000Z

151

Field versus laboratory characterization of clay deposits for use as in situ municipal landfill liners  

E-Print Network [OSTI]

and trimming, use of distilled water as a permeant, existence of air voids in the sample, and the backcalculation of permeability values from consolidation theory rather than the use of directly measured values (Olson and Daniel, 1979). Differences between... measurements showed that the flow was straight down with a hydraulic gradient of one. Permeabilities calculated from field observations were around 10 times greater than laboratory permeabilities. Olson and Daniel (1979) tabulated data from 23 sites where...

Wechsler, Sharon Elizabeth

1990-01-01T23:59:59.000Z

152

Wellbore instability mechanisms in clays  

E-Print Network [OSTI]

This dissertation investigates the stability of wellbores drilled in Ko-consolidated clays using non-linear finite element method (FEM) and effective stress soil models to characterize the behavior of clay and unconsolidated ...

Akl, Sherif Adel

2011-01-01T23:59:59.000Z

153

Liners for ion transport membrane systems  

SciTech Connect (OSTI)

Ion transport membrane system comprising (a) a pressure vessel comprising an interior, an exterior, an inlet, an inlet conduit, an outlet, and an outlet conduit; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein the inlet and the outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; (c) a gas manifold having an interior surface wherein the gas manifold is in flow communication with the interior region of each of the planar ion transport membrane modules and with the exterior of the pressure vessel; and (d) a liner disposed within any of the inlet conduit, the outlet conduit, and the interior surface of the gas manifold.

Carolan, Michael Francis (Allentown, PA); Miller, Christopher Francis (Macungie, PA)

2010-08-10T23:59:59.000Z

154

Studies of solid liner stability in electromagnetic implosions  

SciTech Connect (OSTI)

The authors have conducted a series of experiments involving electromagnetic implosion of solid aluminum liners on the Pegasus II capacitor bank. These experiments consisted of liners on which single wavelength perturbations had been cut into the outer surface. Typical liner thickness was 400 mm and the usual material was the 1100 aluminum alloy. This alloy is relatively soft with a high conductivity. Recently comparisons have been made with harder but more resistive alloys. The sinusoidal perturbations ranged in amplitude between 10--100 mm and their wavelength between 0.5 and 2.0 mm. Radiographs of the imploding liners showed that the initial perturbations grew to amplitudes of 2000--4000 mm before completely rupturing and injecting flux into the region interior to the liner. Throughout the growth of the perturbations, there was virtually no coupling to other wavelengths. Even after liner disruption, the series of disk-like structures that resulted remained at the same scale length until impact with a center conductor. Two-dimensional MHD simulations of these experiments with the high conductivity Al-1100 alloy have yielded consistently good agreement, both qualitatively and quantitatively. Because the magnetic diffusion time in this alloy is comparable to or longer than the growth time, they find that the dynamics can be approximated by theories of Rayleigh-Taylor instability for which strength has been included. Recently, the authors have conducted two experiments with other aluminum alloys. These alloys have a significantly higher tensile yield strength than the 1100 alloy, but also somewhat high resistivity. Because the magnetic diffusion, ohmic heating, and loss of strength all occur on shorter times than does the growth, the forces acting on the liner are more distributed throughout the liner thickness than on the previous experiments. Qualitatively different features have been observed in the radiographs of these experiments. Two-dimensional MHD simulations and analysis will be presented of both sets of experiments and interpretations of the effect of conductivity on liner stability will be given.

Atchison, W.L.; Faehl, R.J.; Rienovsky, R.E.; Morgan, D. [Los Alamos National Lab., NM (United States)

1998-12-31T23:59:59.000Z

155

Expandable Metal Liner For Downhole Components  

DOE Patents [OSTI]

A liner for an annular downhole component is comprised of an expandable metal tube having indentations along its surface. The indentations are formed in the wall of the tube either by drawing the tube through a die, by hydroforming, by stamping, or roll forming and may extend axially, radially, or spirally along its wall. The indentations accommodate radial and axial expansion of the tube within the downhole component. The tube is inserted into the annular component and deformed to match an inside surface of the component. The tube may be expanded using a hydroforming process or by drawing a mandrel through the tube. The tube may be expanded in such a manner so as to place it in compression against the inside wall of the component. The tube is useful for improving component hydraulics, shielding components from contamination, inhibiting corrosion, and preventing wear to the downhole component during use. It may also be useful for positioning conduit and insulated conductors within the component. An insulating material may be disposed between the tube and the component in order to prevent galvanic corrosion of the downhole component.

Hall, David R. (Provo, UT); Fox, Joe R. (Provo, UT)

2004-10-05T23:59:59.000Z

156

CLAY AND SHALE--2003 18.1 CLAY AND SHALE  

E-Print Network [OSTI]

%), drilling mud (22%), and iron ore pelletizing (15%); for common clay and shale, brick (55%), cement (19 Protection Agency (EPA) finalized its maximum achievable control technology (MACT) regulation/Mg of uncalcined clay or a reduction of 30% in emissions. For new batch kilns, hydrogen fluoride and hydrogen

157

CLAY AND SHALE--1998 R1 CLAY AND SHALE  

E-Print Network [OSTI]

.S. Environmental Protection Agency (EPA) continued its work on the Maximum Achievable Control Technology (MACT for Hazardous Air Pollutants Program, which was established by the 1990 Amendments to the Clean Air Act. Clay are mainly underclays associated with coal. Domestic production data for clays were developed by the U

158

Bentonite mat demonstration. Final report  

SciTech Connect (OSTI)

The Bentonite Mat Demonstration was developed to provide the Environmental Restoration Department with field performance characteristics and engineering data for an alternative closure cover system configuration. The demonstration was initiated in response to regulatory concerns regarding the use of an alternative cover system for future design configurations. These design considerations are in lieu of the US Environmental Protection Agency (EPA) Recommended Design for Closure Cover Systems and specifically a single compacted kaolin clay layer with a hydraulic conductivity of 1 {times} 10{sup {minus}7} cm/sec. This alternative configuration is a composite geosynthetic material hydraulic barrier consisting from bottom to top: 2 ft compacted sandy clay layer (typical local Savannah River Site soil type) that is covered by a bentonite mat--geosynthetic clay liner (GCL) and is overlaid by a 40 mil High Density Polyethylene (HDPE) geomembrane--flexible membrane liner. This effort was undertaken to obtain and document the necessary field performance/engineering data for future designs and meet regulatory technical requirements for an alternative cover system configuration. The composite geosynthetic materials hydraulic barrier is the recommended alternative cover system configuration for containment of hazardous and low level radiological waste layers that have a high potential of subsidence to be used at the Savannah River Site (SRS). This alternative configuration mitigates subsidence effects in providing a flexible, lightweight cover system to maintain the integrity of the closure. The composite geosynthetic materials hydraulic barrier is recommended for the Sanitary Landfill and Low Level Radiological Waste Disposal Facility (LLRWDF) Closures.

Serrato, M.G.

1994-12-30T23:59:59.000Z

159

Multiscale modeling of clay-water systems  

E-Print Network [OSTI]

The engineering properties of soils are highly affected by clay content and clay-water interactions. However, existing macro-scale continuum models have no length scale to describe the evolution of the clay microstructure ...

Ebrahimi, Davoud

2014-01-01T23:59:59.000Z

160

Metal liner-driven quasi-isentropic compression of deuterium  

SciTech Connect (OSTI)

Properties of degenerate hydrogen and deuterium (D) at pressures of the order of terapascals are of key interest to Planetary Science and Inertial Confinement Fusion. In order to recreate these conditions in the laboratory, we present a scheme, where a metal liner drives a cylindrically convergent quasi-isentropic compression in a D fill. We first determined an external pressure history for driving a self-similar implosion of a D shell from a fictitious flow simulation [D. S. Clark and M. Tabak, Nucl. Fusion 47, 1147 (2007)]. Then, it is shown that this D implosion can be recreated inside a beryllium liner by shaping the current pulse. For a peak current of 10.8 MA cold and nearly isochoric D is assembled at around 12 500 kg/m{sup 3}. Finally, our two-dimensional Gorgon simulations show the robustness of the implosion method to the magneto-Rayleigh-Taylor instability when using a sufficiently thick liner.

Weinwurm, Marcus; Bland, Simon N.; Chittenden, Jeremy P. [Blackett Laboratory, Imperial College, London SW7 2BW (United Kingdom)] [Blackett Laboratory, Imperial College, London SW7 2BW (United Kingdom)

2013-09-15T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

A semi-analytic model of magnetized liner inertial fusion  

E-Print Network [OSTI]

Presented is a semi-analytic model of magnetized liner inertial fusion (MagLIF). This model accounts for several key aspects of MagLIF, including: (1) preheat of the fuel (optionally via laser absorption); (2) pulsed-power-driven liner implosion; (3) liner compressibility with an analytic equation of state, artificial viscosity, internal magnetic pressure, and ohmic heating; (4) adiabatic compression and heating of the fuel; (5) radiative losses and fuel opacity; (6) magnetic flux compression with Nernst thermoelectric losses; (7) magnetized electron and ion thermal conduction losses; (8) end losses; (9) enhanced losses due to prescribed dopant concentrations and contaminant mix; (10) deuterium-deuterium and deuterium-tritium primary fusion reactions for arbitrary deuterium to tritium fuel ratios; and (11) magnetized alpha-particle fuel heating. We show that this simplified model, with its transparent and accessible physics, can be used to reproduce the general 1D behavior presented throughout the original Ma...

McBride, Ryan D

2015-01-01T23:59:59.000Z

162

Assessment of damage to geomembrane liners by shredded scrap tires  

SciTech Connect (OSTI)

This paper presents the results of a field and laboratory study performed to assess damage to the geomembrane liner caused by using shredded scrap tires as a leachate drainage layer material in landfills. The field testing was performed to assess the damage that occurred to the geomembrane liner during construction and included nine tests conducted with different combinations of tire chip size and thickness, both with a geotextile and without a geotextile overlying the geomembrane, and under different loading conditions. The laboratory testing was performed to characterize the shredded tires, particularly their size distribution, hydraulic conductivity, compressibility, and chemical resistance. The laboratory testing also included performing simulation testing to determine the extent of damage that occurs to the geomembrane liner by the shredded tires under long-term waste-loading conditions. the damage that occurred to the geomembrane liners in both field tests and simulated laboratory tests was determined by visual observations as well as by conducting multi-axial tension tests, wide strip tension tests, and water vapor transmission tests on the exhumed geomembrane samples. Based on these results, a 0.46-m thick layer of secondary shred tire chips, with an average size of 7.6 cm, placed over a 543-g/m{sup 2} geotextile installed over a geomembrane liner using low-ground-pressure (<58 kPa) equipment was determined to provide adequate protection in the geomembrane liner during construction. The degree of protection offered under long-term loading conditions depends on the normal stress and the random orientation of the shredded tire chips at the geomembrane interface.

Reddy, K.R.; Saichek, R.E. [Univ. of Illinois, Chicago, IL (United States). Dept. of Civil and Materials Engineering

1998-12-01T23:59:59.000Z

163

FFTF in-containment cell liner design and installation experience  

SciTech Connect (OSTI)

Design features and liner construction techniques are discussed. Cell leak-rate tests and the methods used to locate and repair leaks are described. A brief analysis of the overall experience at FFTF is provided, with recommendations for future plant designs.

Umek, A.M.; Swenson, L.D.

1980-01-01T23:59:59.000Z

164

225-B Pool Cell 5 Liner Leak Investigation  

SciTech Connect (OSTI)

This document describes the actions taken to confirm and respond to a very small (0.046 ml/min) leak in the stainless steel liner of Hanford`s Waste Encapsulation and Storage Facility (WESF) storage pool cell 5 in Building 225-B. Manual level measurements confirmed a consistent weekly accumulation of 0.46 liters of water in the leak detection grid sump below the pool cell 5 liner. Video inspections and samples point to the capsule storage pool as the source of the water. The present leak rate corresponds to a decrease of only 0.002 inches per week in the pool cell water level, and consequently does not threaten any catastrophic loss of pool cell shielding and cooling water. The configuration of the pool cell liner, sump system, and associated risers will limit the short-term consequences of even a total liner breach to a loss of 1 inch in pool cell level. The small amount of demineralized pool cell water which has been in contact with the concrete structure is not enough to cause significant structural damage. However, ongoing water-concrete interaction increases. The pool cell leak detection sump instrumentation will be modified to improve monitoring of the leak rate in the future. Weekly manual sump level measurements continue in the interim. Contingency plans are in place to relocate the pool cell 5 capsules if the leak worsens.

Rasmussen, J.H., Westinghouse Hanford

1996-06-07T23:59:59.000Z

165

Evaluation of a stack: A concrete chimney with brick liner  

SciTech Connect (OSTI)

A 200 ft. tall stack, consisting of a concrete chimney with an independent acid proof brick liner built in the 1950`s, serving the Separations facility at the Savannah River Site (SRS), was evaluated for the performance category 3 (PC3) level of Natural Phenomena Hazards (NPH) effects. The inelastic energy absorption capacity of the concrete chimney was considered in the evaluation of the earthquake resistance, in particular, to compute the F{sub {mu}} factor. The calculated value of F{sub {mu}} exceeded 3.0, while the seismic demand for the PC3 level, using an F{sub {mu}} value of 1.5, was found to be less than the capacity of the concrete chimney. The capacity formulation of ACI 307 was modified to incorporate the effect of an after design opening on the tension side. There are considerable uncertainties in determining the earthquake resistance of the independent brick liner. The critical liner section, located at the bottom of the breeching opening, does not meet the current recommendations. A discussion is provided for the possible acceptable values for the ``Moment Reduction Factor``, R{sub w} or F{sub {mu}} for the liner. Comments are provided on the comparison of stack demands using response spectra (RS) versus time history (TH) analysis, with and without soil structure interaction (SSI) effects.

Joshi, J.R.; Amin, J.A. [Westinghouse Savannah River Co., Aiken, SC (United States); Porthouse, R.A. [Chimney Consultants, West Lebanon, NH (United States)

1995-12-31T23:59:59.000Z

166

2005 Minerals Yearbook CLAY AND SHALE  

E-Print Network [OSTI]

2005 Minerals Yearbook CLAY AND SHALE U.S. Department of the Interior U.S. Geological Survey February 2007 #12;CLAY AND SHALE--2005 18.1 CLAY AND SHALE By Robert L. Virta Domestic survey data at $1.68 billion in 2004 (table 1). Common clay and shale accounted for 59% of the tonnage, and kaolin

167

Jamaican red clay tobacco pipes  

E-Print Network [OSTI]

JAMAICAN RED CLAY TOBACCO PIPES A Thesis by KENAN PAUL HEIDTKE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF ARTS December 1992 Major Subject...: Anthropology JAMAICAN RED CLAY TOBACCO PIPES A Thesis by KENAN PAUL HEIDTKE Approved as to style and content by: Dorm L. Hamilton (Chair of Committee) Frederick H. van Doorninck, J (Member) enry C. Schmidt (Member) Vaughn M. Bryant (Head...

Heidtke, Kenan Paul

1992-01-01T23:59:59.000Z

168

Consideration of liners and covers in performance assessments  

SciTech Connect (OSTI)

On-site disposal cells are in use and being considered at several United States Department of Energy (USDOE) sites as the final disposition for large amounts of waste associated with cleanup of contaminated areas and facilities. These disposal cells are typically regulated by States and/or the U.S. Environmental Protection Agency under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) in addition to having to comply with requirements in DOE Order 435.1, Radioactive Waste Management due to the radioactive waste. The USDOE-Environmental Management Office of Site Restoration formed a working group to foster improved communication and sharing of information for personnel associated with these CERCLA disposal cells and work towards more consistent assumptions, as appropriate, for technical and policy considerations related to CERCLA risk assessments and DOE Order 435.1 performance assessments in support of a Record of Decision and Disposal Authorization Statement, respectively. One of the issues considered by the working group, which is addressed in this report, was how to appropriately consider the performance of covers and liners/leachate collections systems in the context of a DOE Order 435.1 performance assessment (PA). This same information may be appropriate for consideration within CERCLA risk assessments for these facilities. These OSDCs are generally developed to meet hazardous waste (HW) disposal design standards under the Resource Conservation and Recovery Act (RCRA) as well as the DOE Order 435.1 performance based standards for disposal of radioactive waste. To meet the standards for HW, the facilities typically include engineered covers and liner/leachate collection systems. Thus, when considering such facilities in the context of a DOE Order 435.1 PA, there is a need to address the evolution of performance of covers and liner/leachate collection systems in the context of meeting a performance standard considering time frames of 1,000 years for compliance and potentially thousands of years based on the wastes to test the robustness of the system. Experience has shown that there are a range of expectations and perspectives from the different regulators involved at different sites when reviewing assumptions related to cover and liner/leachate collection system performance. However for HW disposal alone under RCRA the design standards are typically considered sufficient by the regulators without a requirement to assess long-term performance thus avoiding the need to consider the details addressed in this report. This report provides suggestions for a general approach to address covers and liners/leachate collection systems in a DOE Order 435.1 PA and how to integrate assessments with defense-in-depth considerations such as design, operations, and waste acceptance criteria to address uncertainties. The emphasis is on water balances and management in such assessments. Specific information and references are provided for details needed to address the evolution of individual components of cover and liner/leachate collection systems. This information was then synthesized into suggestions for best practices for cover and liner system design and examples of approaches to address the performance of covers and liners as part of a performance assessment of the disposal system. Numerous references are provided for sources of information to help describe the basis for performance of individual components of cover and liner systems.

Phifer, Mark A. [Savannah River National Laboratory, Aiken, SC (United States); Seitz, Robert R. [Savannah River National Laboratory, Aiken, SC (United States); Suttora, Linda C. [USDOE Enviromental Management, Washington, DC (United States)

2014-09-18T23:59:59.000Z

169

Micro-beam friction liner and method of transferring energy  

DOE Patents [OSTI]

A micro-beam friction liner adapted to increase performance and efficiency and reduce wear in a piezoelectric motor or actuator or other device using a traveling or standing wave to transfer energy in the form of torque and momentum. The micro-beam friction liner comprises a dense array of micro-beam projections having first ends fixed relative to a rotor and second ends projecting substantially toward a plurality of teeth of a stator, wherein the micro-beam projections are compressed and bent during piezoelectric movement of the stator teeth, thereby storing the energy, and then react against the stator teeth to convert the stored energy stored to rotational energy in the rotor.

Mentesana, Charles (Leawood, KS)

2007-07-17T23:59:59.000Z

170

CLAY AND SHALE--1999 18.1 CLAY AND SHALE  

E-Print Network [OSTI]

is required under the National Emissions Standards for Hazardous Air Pollutants Program, which was established of hazardous air pollutants. The agency further concluded that there were approximately 20 major sources on the Maximum Achievable Control Technology (MACT) for the clay-products-manufacturing industries. The MACT

171

Gas-puff liner implosion in the configuration with helical current return rods  

SciTech Connect (OSTI)

Results of experiments with double-shell gas-puff liners carried out on a high-current MIG generator (2 MA, 80 ns) are presented. To stabilize the process of liner implosion and increase the efficiency of energy transfer from the generator to the liner plasma, a current return in the form of a multifilar helix was used. The effect of the configuration of the current return on the parameters of the generated pulses of argon and neon K-shell radiation (with photon energies of 3-5 and 0.9-1.5 keV, respectively) and the neutron yield from a deuterium liner were studied.

Sorokin, S. A., E-mail: s.sorokin@rambler.ru [Russian Academy of Sciences, Institute of High Current Electronics, Siberian Branch (Russian Federation)

2013-02-15T23:59:59.000Z

172

Liner/target/CMU cassette design and fabrication  

SciTech Connect (OSTI)

As part of an ongoing collaboration in pulsed power technology and condensed matter shock physics with RFNCNNIIEF, the initial design for the target and central measuring unit (CMU) for a high-pressure, high-precision ({approx}1 %), Hugoniot, equation of state (EOS) experiment is shown. VNIIEF would design and construct the disk explosive magnetic generator (DEMG) with peak currents {approx}100 MA, and cylindrical liner system with peak velocity {approx}10-20 km/s. LANL would design and construct the target and velocimetry diagnostic system. The initial mechanical design features a 2 cm diameter target system and a 1 cm diameter CMU with 32 lines of sight for PDV.

Griego, Jeffrey Randall [Los Alamos National Laboratory

2011-01-07T23:59:59.000Z

173

SERVICE LIFE OF A LANDFILL LINER SYSTEM SUBJECTED TO ELEVATED TEMPERATURES  

E-Print Network [OSTI]

SERVICE LIFE OF A LANDFILL LINER SYSTEM SUBJECTED TO ELEVATED TEMPERATURES Timothy D. Stark, Ph and possible publication in the ASCE Journal of Hazardous, Toxic, and Radioactive Waste Management April 14-Engineered-Components-ServiceLife-Submission_2.pdf #12;2 SERVICE LIFE OF LANDFILL LINER SYSTEMS SUBJECTED TO ELEVATED1 TEMPERATURES2 Timothy D

174

long-Term Tritium Transport through Field-Scale Compacted Soil Liner  

E-Print Network [OSTI]

long-Term Tritium Transport through Field-Scale Compacted Soil Liner Cecile Toupiol1; Thomas W. Daniel7 Abstract: A l3-year study of tritium transport through a field-scale earthen liner sampling) were used to determine the vertical tritium concentration profiles at different times

175

Evaluation of the Effect of Different Modified Atmosphere Packaging Box Liners on the  

E-Print Network [OSTI]

) after 45 days of cold storage. However, after 60 days of cold storage, fruit from the MAP box liners cold storage to limit water loss, delay ripening, and suppress diseases (Beaudry, 1999; Smith et al that the use of MAP box liners is recommended to improve market life of `Friar' plums up to 45 days cold

Crisosto, Carlos H.

176

Tank 241-AY-102 Secondary Liner Corrosion Evaluation - 14191  

SciTech Connect (OSTI)

In October 2012, Washington River Protection Solutions, LLC (WRPS) determined that the primary tank of 241-AY-102 (AY-102) was leaking. A number of evaluations were performed after discovery of the leak which identified corrosion from storage of waste at the high waste temperatures as one of the major contributing factors in the failure of the tank. The propensity for corrosion of the waste on the annulus floor will be investigated to determine if it is corrosive and must be promptly removed or if it is benign and may remain in the annulus. The chemical composition of waste, the temperature and the character of the steel are important factors in assessing the propensity for corrosion. Unfortunately, the temperatures of the wastes in contact with the secondary steel liner are not known; they are estimated to range from 45 deg C to 60 deg C. It is also notable that most corrosion tests have been carried out with un-welded, stress-relieved steels, but the secondary liner in tank AY-102 was not stress-relieved. In addition, the cold weather fabrication and welding led to many problems, which required repeated softening of the metal to flatten secondary bottom during its construction. This flame treatment may have altered the microstructure of the steel.

Boomer, Kayle D. [Washington River Protection Solutions (United States); Washenfelder, Dennis J. [Washington River Protection Solutions (United States); Johnson, Jeremy M. [Department of Energy, Washington, DC (United States). Office of River Protection

2014-01-07T23:59:59.000Z

177

Development of improved performance refractory liner materials for slagging gasifiers  

SciTech Connect (OSTI)

Refractory liners for slagging gasifiers used in power generation, chemical production, or as a possible future source of hydrogen for a hydrogen based economy, suffer from a short service life. These liner materials are made of high Cr2O3 and lower levels of Al2O3 and/or ZrO2. As a working face lining in the gasifier, refractories are exposed to molten slags at elevated temperature that originate from ash in the carbon feedstock, including coal and/or petroleum coke. The molten slag causes refractory failure by corrosion dissolution and by spalling. The Albany Research Center is working to improve the performance of Cr2O3 refractories and to develop refractories without Cr2O3 or with Cr2O3 content under 30 wt pct. Research on high Cr2O3 materials has resulted in an improved refractory with phosphate additions that is undergoing field testing. Results to date of field trials, along with research direction on refractories with no or low Cr2O3, will be discussed.

Kwong, Kyei-Sing; Bennett, James P.; Powell, Cynthia; Thomas, Hugh; Krabbe, Rick

2005-01-01T23:59:59.000Z

178

FIREBALL: Fusion Ignition Rocket Engine with Ballistic Ablative Lithium Liner  

SciTech Connect (OSTI)

Thermo-nuclear fusion may be the key to a high Isp, high specific power propulsion system. In a fusion system energy is liberated within, and imparted directly to, the propellant. In principle, this can overcome the performance limitations inherent in systems that require thermal power transfer across a material boundary, and/or multiple power conversion stages (NTR, NEP). A thermo-nuclear propulsion system, which attempts to overcome some of the problems inherent in the Orion concept, is described. A dense FRC plasmoid is accelerated to high velocity (in excess of 500 km/s) and is compressed into a detached liner (pulse unit). The kinetic energy of the FRC is converted into thermal and magnetic-field energy, igniting a fusion burn in the magnetically confined plasma. The fusion reaction serves as an ignition source for the liner, which is made out of detonable materials. The energy liberated in this process is converted to thrust by a pusher-plate, as in the classic Orion concept. However with this concept, the vehicle does not carry a magazine of autonomous pulse-units. By accelerating a second, heavier FRC, which acts as a piston, right behind the first one, the velocity required to initiate the fusion burn is greatly reduced.

Martin, Adam K.; Eskridge, Richard H.; Lee, Michael H. [Propulsion Research Center, NASA Marshall Space Flight Center XD22, Huntsville, AL 35812 (United States); Fimognari, Peter J. [Department of Physics, University of Alabama in Huntsville, Huntsville, AL 35899 (United States)

2006-01-20T23:59:59.000Z

179

Formation of imploding plasma liners for fundamental HEDP studies and MIF Standoff Driver Concept  

SciTech Connect (OSTI)

The disciplines of High Energy Density Physics (HEDP) and Inertial Confinement Fusion (ICF) are characterized by hypervelocity implosions and strong shocks. The Plasma Liner Experiment (PLX) is focused on reaching HEDP and/or ICF relevant regimes in excess of 1 Mbar peak pressure by the merging and implosion of discrete plasma jets, as a potentially efficient path towards these extreme conditions in a laboratory. In this work we have presented the first 3D simulations of plasma liner, formation, and implosion by the merging of discrete plasma jets in which ionization, thermal conduction, and radiation are all included in the physics model. The study was conducted by utilizing a smoothed particle hydrodynamics code (SPHC) and was a part of the plasma liner experiment (PLX). The salient physics processes of liner formation and implosion are studied, namely vacuum propagation of plasma jets, merging of the jets (liner forming), implosion (liner collapsing), stagnation (peak pressure), and expansion (rarefaction wave disassembling the target). Radiative transport was found to significantly reduce the temperature of the liner during implosion, thus reducing the thermal leaving more pronounced gradients in the plasma liner during the implosion compared with ideal hydrodynamic simulations. These pronounced gradients lead to a greater sensitivity of initial jet geometry and symmetry on peak pressures obtained. Accounting for ionization and transport, many cases gave higher peak pressures than the ideal hydrodynamic simulations. Scaling laws were developed accordingly, creating a non-dimensional parameter space in which performance of an imploding plasma jet liner can be estimated. It is shown that HEDP regimes could be reached with ~ 5 MJ of liner energy, which would translate to roughly 10 to 20 MJ of stored (capacitor) energy. This is a potentially significant improvement over the currently available means via ICF of achieving HEDP and nuclear fusion relevant parameters.

Cassibry, Jason [Univ. of AL in Huntsville; Hatcher, Richard [Univ. of AL in Huntsville; Stanic, Milos [Univ. of AL in Huntsville

2013-08-17T23:59:59.000Z

180

OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY  

E-Print Network [OSTI]

layer Geosynthetic liner to stop storm water infiltration Historical waste disposal practices of unconfined pits and trenches containing low level radioactive and organic waste. Remediation strategies have

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Clay Electric Cooperative, Inc- Energy Conservation Loans  

Broader source: Energy.gov [DOE]

Clay Electric Cooperative (CEC), a Touchstone Energy Cooperative, covers 14 North Florida counties, including Gainesville, Keystone Heights, Lake City, Orange Park, Palatka, and Salt Springs. It...

182

Clay Electric Cooperative, Inc- Solar Thermal Loans  

Broader source: Energy.gov [DOE]

Clay Electric Cooperative (CEC), a Touchstone Energy Cooperative, covers 14 counties in northern Florida, including Gainesville, Keystone Heights, Lake City, Orange Park, Palatka, and Salt Springs....

183

Aging of steel containments and liners in nuclear power plants  

SciTech Connect (OSTI)

Aging of the containment pressure boundary in light water reactor plants is being addressed to understand the significant factors relating occurrence of corrosion efficacy of inspection and structural capacity reduction of steel containments and liners of concrete containments. and to make recommendations on use of risk models in regulatory decisions. Current regulatory in-service inspection requirements are reviewed and a summary of containment related degradation experience is presented. Current and emerging nondestructive examination techniques and a degradation assessment methodology for characterizing and quantifying the amount of damage present are described. Quantitative tools for condition assessment of aging structures using time dependent structural reliability analysis methods are summarized. Such methods provide a framework for addressing the uncertainties attendant to aging in the decision process. Results of this research provide a means for establishing current and estimating future structural capacity margins of containments, and to address the significance of incidences of reported containment degradation.

Naus, D.J.; Oland, C.B. [Oak Ridge National Lab., TN (United States). Engineering Technology Div.; Ellingwood, B. [Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Civil Engineering; Norris, W.E. [Nuclear Regulatory Commission, Washington, DC (United States). Office of Nuclear Regulatory Research

1998-01-01T23:59:59.000Z

184

Energy transfer through a multi-layer liner for shaped charges  

DOE Patents [OSTI]

This invention relates to the determination of parameters for selecting materials for use as liners in shaped charges to transfer the greatest amount of energy to the explosive jet. Multi-layer liners constructed of metal in shaped charges for oil well perforators or other applications are selected in accordance with the invention to maximize the penetrating effect of the explosive jet by reference to four parameters: (1) Adjusting the explosive charge to liner mass ratio to achieve a balance between the amount of explosive used in a shaped charge and the areal density of the liner material; (2) Adjusting the ductility of each layer of a multi-layer liner to enhance the formation of a longer energy jet; (3) Buffering the intermediate layers of a multi-layer liner by varying the properties of each layer, e.g., composition, thickness, ductility, acoustic impedance and areal density, to protect the final inside layer of high density material from shattering upon impact of the explosive force and, instead, flow smoothly into a jet; and (4) Adjusting the impedance of the layers in a liner to enhance the transmission and reduce the reflection of explosive energy across the interface between layers.

Skolnick, Saul (Albuquerque, NM); Goodman, Albert (Albuquerque, NM)

1985-01-01T23:59:59.000Z

185

Method and apparatus for monitoring the integrity of a geomembrane liner using time domain reflectometry  

DOE Patents [OSTI]

Leaks are detected in a multi-layered geomembrane liner by a two-dimensional time domain reflectometry (TDR) technique. The TDR geomembrane liner is constructed with an electrically conductive detection layer positioned between two electrically non-conductive dielectric layers, which are each positioned between the detection layer and an electrically conductive reference layer. The integrity of the TDR geomembrane liner is determined by generating electrical pulses within the detection layer and measuring the time delay for any reflected electrical energy caused by absorption of moisture by a dielectric layer.

Morrison, John L. (Idaho Falls, ID)

2001-04-24T23:59:59.000Z

186

Clay Sell Sworn in as Deputy Secretary of Energy | Department...  

Broader source: Energy.gov (indexed) [DOE]

Clay Sell Sworn in as Deputy Secretary of Energy Clay Sell Sworn in as Deputy Secretary of Energy March 21, 2005 - 10:53am Addthis WASHINGTON, DC - Jeffrey Clay Sell was sworn in...

187

Clay-Oil Droplet Suspensions in Electric Field.  

E-Print Network [OSTI]

?? Silicone oil droplets containing synthetic smectite clay submerged in another immiscible organic oil have been studied by observing clay particle movement, oil circulation and… (more)

Kjerstad, Knut Brøndbo

2012-01-01T23:59:59.000Z

188

Intercalation of Trichloroethene by Sediment-Associated Clay...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Intercalation of Trichloroethene by Sediment-Associated Clay Minerals. Intercalation of Trichloroethene by Sediment-Associated Clay Minerals. Abstract: The objective of this...

189

Formation of Imploding Plasma Liners for HEDP and MIF Application  

SciTech Connect (OSTI)

Plasma jets with high density and velocity have a number of important applications in fusion energy and elsewhere, including plasma refueling, disruption mitigation in tokamaks, magnetized target fusion, injection of momentum into centrifugally confined mirrors, plasma thrusters, and high energy density plasmas (HEDP). In Magneto-Inertial Fusion (MIF), for example, an imploding material liner is used to compress a magnetized plasma to fusion conditions and to confine the resulting burning plasma inertially to obtain the necessary energy gain. The imploding shell may be solid, liquid, gaseous, or a combination of these states. The presence of the magnetic field in the target plasma suppresses thermal transport to the plasma shell, thus lowering the imploding power needed to compress the target to fusion conditions. This allows the required imploding momentum flux to be generated electromagnetically using off-the-shelf pulsed power technology. Practical schemes for standoff delivery of the imploding momentum flux are required and are open topics for research. One approach for accomplishing this, called plasma jet driven magneto-inertial fusion (PJMIF), uses a spherical array of pulsed plasma guns to create a spherically imploding shell of very high velocity, high momentum flux plasma. This approach requires development of plasma jet accelerators capable of achieving velocities of 50-200 km/s with very precise timing and density profiles, and with high total mass and density. Low-Z plasma jets would require the higher velocities, whereas very dense high-Z plasma shells could achieve the goal at velocities of only 50-100 km/s. In this report, we describe our work to develop the pulsed plasma gun technology needed for an experimental scientific exploration of the PJMIF concept, and also for the other applications mentioned earlier. The initial goal of a few hundred of hydrogen at 200 km/s was eventually replaced with accelerating 8000 ?g of argon or xenon to 50 km/s for the Plasma Liner Experiment (PLX) at Los Alamos National Laboratory (LANL). Initial work used existing computational and analytical tools to develop and refine a specific plasma gun concept having a novel tapered coaxial electromagnetic accelerator contour with an array of symmetric ablative plasma injectors. The profile is designed to suppress the main barrier to success in coaxial guns, namely the blow-by instability in which the arc slips past and outruns the bulk of the plasma mass. Efforts to begin developing a set of annular non-ablative plasma injectors for the coaxial gun, in order to accelerate pure gases, resulted in development of linear parallel-plate MiniRailguns that turned out to work well as plasma guns in their own right and we subsequently chose them for an initial plasma liner experiment on the PLX facility at LANL. This choice was mainly driven by cost and schedule for that particular experiment, while longer term goals still projected use of coaxial guns for reactor-relevant applications for reasons of better symmetry, lower impurities, more compact plasma jet formation, and higher gun efficiency. Our efforts have focused mainly on 1) developing various plasma injection systems for both coax and linear railguns and ensuring they work reliably with the accelerator section, 2) developing a suite of plasma and gun diagnostics, 3) performing computational modeling to design and refine the plasma guns, 4) establishing a research facility dedicated to plasma gun development, and finally, 5) developing plasma guns and associated pulse power systems capable of achieving these goals and installing and testing the first two gun sets on the PLX facility at LANL. During the second funding cycle for this program, HyperV joined in a collaborative effort with LANL, the University of Alabama at Huntsville, and the University of New Mexico to perform a plasma liner experiment (PLX) to investigate the physics and technology of forming spherically imploding plasma liners. HyperV’s tasks focused on developing the plasma guns and associated pulse power syst

Witherspoon, F. Douglas [HyperV Technologies Corp.; Case, Andrew [HyperV Technologies Corp.; Brockington, Samuel [HyperV Technologies Corp.y; Messer, Sarah [HyperV Technologies Corp.; Bomgardner, Richard [HyperV Technologies Corp.; Phillips, Mike [HyperV Technologies Corp.; Wu, Linchun [HyperV Technologies Corp.; Elton, Ray [University of Maryland

2014-11-11T23:59:59.000Z

190

On the efficacy of imploding plasma liners for magnetized fusion target compression  

SciTech Connect (OSTI)

A new theoretical model is formulated to study the idea of merging a spherical array of converging plasma jets to form a 'plasma liner' that further converges to compress a magnetized plasma target to fusion conditions [Y. C. F. Thio et al., 'Magnetized target fusion in a spheroidal geometry with standoff drivers', Current Trends in International Fusion Research II, edited by E. Panarella (National Research Council Canada, Ottawa, Canada, 1999)]. For a spherically imploding plasma liner shell with high initial Mach number (M=liner speed/sound speed) the rise in liner density with decreasing radius r goes as {rho}{approx}1/r{sup 2}, for any constant adiabatic index {gamma}=d ln p/d ln {rho}. Accordingly, spherical convergence amplifies the ram pressure of the liner on target by the factor A{approx}C{sup 2}, indicating strong coupling to its radial convergence C=r{sub m}/R, where r{sub m}(R)=jet merging radius (compressed target radius), and A=compressed target pressure/initial liner ram pressure. Deuterium-tritium (DT) plasma liners with initial velocity {approx}100 km/s and {gamma}=5/3, need to be hypersonic M{approx}60 and thus cold in order to realize values of A{approx}10{sup 4} necessary for target ignition. For optically thick DT liners, T<2 eV, n>10{sup 19}-10{sup 20} cm{sup -3}, blackbody radiative cooling is appreciable and may counteract compressional heating during the later stages of the implosion. The fluid then behaves as if the adiabatic index were depressed below 5/3, which in turn means that the same amplification A=1.6x10{sup 4} can be accomplished with a reduced initial Mach number M{approx_equal}12.7({gamma}-0.3){sup 4.86}, valid in the range (10liners assembled by current and anticipated plasma jets is <4%. A new similarity model for fusion {alpha}-particle heating of the collapsed liner indicates that 'spark' ignition of the DT liner fuel does not appear to be possible for magnetized fusion targets with typical threshold values of areal density {rho}R<0.02 g cm{sup -2}.

Parks, P. B. [General Atomics, P.O. Box 85608, San Diego, California 92186-5688 (United States)

2008-06-15T23:59:59.000Z

191

An analysis of selected factors controlling or affecting the hydraulic conductivity of compacted soil liners  

E-Print Network [OSTI]

, and maintenance of compacted so11 liners for use 1n waste management facilities. CHAPTER II U. S. ENVIRONMENTAL PROTECTION AGENCY DESIGN REI}UIREMENTS FOR CERTAIN WASTE NANAGENENT FACILITIES On November 8, 1984, the President signed into law the Hazardous... and Solid Waste Amendments of 1984 (HSWA) to the Resource Conservation and Recovery Act of 1976 (RCRA). Under Sections 3004(o) and 3015 of HSWA, certain landfills and surface impoundments are required to have "two or more liners and a leachate collection...

Speake, Robert Cary

1986-01-01T23:59:59.000Z

192

Nuclear containment steel liner corrosion workshop : final summary and recommendation report.  

SciTech Connect (OSTI)

This report documents the proceedings of an expert panel workshop conducted to evaluate the mechanisms of corrosion for the steel liner in nuclear containment buildings. The U.S. Nuclear Regulatory Commission (NRC) sponsored this work which was conducted by Sandia National Laboratories. A workshop was conducted at the NRC Headquarters in Rockville, Maryland on September 2 and 3, 2010. Due to the safety function performed by the liner, the expert panel was assembled in order to address the full range of issues that may contribute to liner corrosion. This report is focused on corrosion that initiates from the outer surface of the liner, the surface that is in contact with the concrete containment building wall. Liner corrosion initiating on the outer diameter (OD) surface has been identified at several nuclear power plants, always associated with foreign material left embedded in the concrete. The potential contributing factors to liner corrosion were broken into five areas for discussion during the workshop. Those include nuclear power plant design and operation, corrosion of steel in contact with concrete, concrete aging and degradation, concrete/steel non-destructive examination (NDE), and concrete repair and corrosion mitigation. This report also includes the expert panel member's recommendations for future research.

Erler, Bryan A. (Erler Engineering Ltd., Chicago, IL); Weyers, Richard E. (Virginia Tech University, Blacksburg, VA); Sagues, Alberto (University of South Florida, Tampa, FL); Petti, Jason P.; Berke, Neal Steven (Tourney Consulting Group, LLC, Kalamazoo, MI); Naus, Dan J. (Oak Ridge National Laboratory, Oak Ridge, TN)

2011-07-01T23:59:59.000Z

193

Solid liner implosions on Z for producing multi-megabar, shockless compressions  

SciTech Connect (OSTI)

Current pulse shaping techniques, originally developed for planar dynamic material experiments on the Z-machine [M. K. Matzen et al., Phys. Plasmas 12, 055503 (2005)], are adapted to the design of controlled cylindrical liner implosions. By driving these targets with a current pulse shape that prevents shock formation inside the liner, shock heating is avoided along with the corresponding decrease in electrical conductivity ahead of the magnetic diffusion wave penetrating the liner. This results in an imploding liner with a significant amount of its mass in the solid phase and at multi-megabar pressures. Pressures in the solid region of a shaped pulse driven beryllium liner fielded on the Z-machine are inferred to 5.5 Mbar, while simulations suggest implosion velocities greater than 50kms{sup -1}. These solid liner experiments are diagnosed with multi-frame monochromatic x-ray backlighting which is used to infer the material density and pressure. This work has led to a new platform on the Z-machine that can be used to perform off-Hugoniot measurements at higher pressures than are accessible through magnetically driven planar geometries.

Martin, M. R.; Lemke, R. W.; McBride, R. D.; Davis, J. P.; Dolan, D. H.; Knudson, M. D.; Sinars, D. B.; Smith, I. C.; Savage, M.; Stygar, W. A.; Flicker, D. G.; Herrmann, M. C. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Cochrane, K. R. [Raytheon Ktech, Albuquerque, New Mexico 87123 (United States); Killebrew, K. [General Atomics, San Diego, California 92121 (United States)

2012-05-15T23:59:59.000Z

194

Silicate emissions in active galaxies - From LINERs to QSOs  

E-Print Network [OSTI]

We report the first detection of ~10 and ~18 micron silicate dust emissions in a low-luminosity active galactic nucleus (AGN), obtained in Spitzer-IRS 7-37 micron spectroscopy of the Type 1 LINER galaxy NGC3998. Silicate emissions in AGN have only recently been detected in several quasars. Our detection counters suggestions that silicate emissions are present only in the most luminous AGN. The silicate features may be signatures of a dusty ``obscuring torus'' viewed face-on as postulated for Type 1 AGN. However, the apparently cool (~200 K) dust is inconsistent with theoretical expectations of much hotter torus walls. Furthermore, not all Type 1 objects are silicate emission sources. Alternatively, the silicate emission may originate in dust not directly associated with a torus. We find that the long-wavelength (>20 micron) tail of the emission in NGC3998 is significantly weaker than in the sample of bright QSOs recently presented by Hao et al. The 10 micron profile in our NGC3998 spectrum is inconsistent with ``standard'' silicate ISM dust. This may indicate differences in the dust composition, grain size distribution, or degree of crystallization. The differences between NGC3998, QSOs, and Galactic templates suggest that there are significant environmental variations.

E. Sturm; M. Schweitzer; D. Lutz; A. Contursi; R. Genzel; M. D. Lehnert; L. J. Tacconi; S. Veilleux; D. S. Rupke; D. -C. Kim; A. Sternberg; D. Maoz; S. Lord; J. Mazzarella; D. B. Sanders

2005-06-29T23:59:59.000Z

195

TIME DOMAIN REFLECTOMETRY MEASUREMENT AND HIGHLY PLASTIC CLAYS  

E-Print Network [OSTI]

1 TIME DOMAIN REFLECTOMETRY MEASUREMENT AND HIGHLY PLASTIC CLAYS By: J. A. Kuhn1 and J. G. Zornberg for use in highly plastic clay. The clay used for experimentation was taken locally from the Eagle Ford Ford Clay is determined. INTRODUCTION The progression of wetting and drying fronts in highly plastic

Zornberg, Jorge G.

196

CLAYS--2000 19.1 By Robert L. Virta  

E-Print Network [OSTI]

Administration (FDA) clarified its guidance document for dioxins in anticaking agents, including clay, used

197

2006 Minerals Yearbook ClaY and Shale  

E-Print Network [OSTI]

2006 Minerals Yearbook ClaY and Shale U.S. Department of the Interior U.S. Geological Survey January 2008 #12;Clay and Shale--2006 18.1 The amount of clay sold or used by domestic producers in 2006 in 2005 (table 1). Common clay and shale accounted for 59% of the tonnage, and kaolin accounted for 55

198

Natural Radioactivity of Boron Added Clay Samples  

SciTech Connect (OSTI)

Clay, consisting fine-grained minerals, is an interesting materials and can be used in a variety of different fields especially in dermatology application. Using clay such a field it is important to measure its natural radioactivity. Thus the purpose of this study is to measure {sup 226}Ra, {sup 232}Th and {sup 40}K concentration in clay samples enriched with boron. Three different types of clay samples were prepared where boron is used in different rate. The measurements have been determined using a gamma-ray spectrometry consists of a 3''x3'' NaI(Tl) detector. From the measured activity the radium equivalent activities (Ra{sub eq}), external hazard index (H{sub ex}), absorbed dose rate in air (D) and annual effective dose (AED) have also been obtained.

Akkurt, I.; Guenoglu, K. [Sueleyman Demirel University, Faculty of Arts and Sciences, Dept. of Physics, Isparta (Turkey); Canakcii, H. [Gaziantep University, Engineering Faculty, Civil Engineering Dept., Gaziantep (Turkey); Mavi, B. [Amasya University, Faculty of Arts and Sciences, Dept. of Physics, Amasya (Turkey)

2011-12-26T23:59:59.000Z

199

Completion strategy includes clay and precipitate control  

SciTech Connect (OSTI)

This article describes the conditions which are necessary for a successful oil well completion in the Mississippi and Cherokee zones of South Central Kansas. Topics considered include paraffin precipitation, clay swelling and migration, and iron precipitation. Clays in these zones are sensitive to water-base treating fluids and tend to swell and migrate to the well bore, thereby causing permeability damage. The presence of iron in the Mississippi and Cherokee formations has been indicated by cuttings, core samples, and connate water samples.

Sandy, T.; Gardner, G.R.

1985-05-06T23:59:59.000Z

200

On The Thermal Consolidation Of Boom Clay  

E-Print Network [OSTI]

When a mass of saturated clay is heated, as in the case of host soils surrounding nuclear waste disposals at great depth, the thermal expansion of the constituents generates excess pore pressures. The mass of clay is submitted to gradients of pore pressure and temperature, to hydraulic and thermal flows, and to changes in its mechanical properties. In this work, some of these aspects were experimentally studied in the case of Boom clay, so as to help predicting the response of the soil, in relation with investigations made in the Belgian underground laboratory at Mol. Results of slow heating tests with careful volume change measurements showed that a reasonable prediction of the thermal expansion of the clay-water system was obtained by using the thermal properties of free water. In spite of the density of Boom clay, no significant effect of water adsorption was observed. The thermal consolidation of Boom clay was studied through fast heating tests. A simple analysis shows that the hydraulic and thermal trans...

Delage, Pierre; Cui, Yu-Jun

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Design, engineering and evaluation of refractory liners for slagging gasifiers. Final report  

SciTech Connect (OSTI)

The contract for this program was awarded at the end of September 1978. Work was started on 1 October 1978, on Tasks A, B, and E. Task A, Conceptual Liner Designs, and Task B, Test System Design and Construction, were completed. Task C, Liner Tests, and Task D, Liner Design Evaluation, were to begin upon completion of Task B. Task E, Liner Model Development, is inactive after an initial data compilation and theoretical model development effort. It was to be activated as soon as data were available from Task D. Task F, Liner Design Handbook, was active along with Task A since the reports of both tasks were to use the same format. At this time, Tasks C, D, and F are not to be completed since funding of this project was phased out by DOE directive. The refractory text facility, which was constructed, was tested and found to perform satisfactorily. It is described in detail, including a hazard analysis which was performed. (LTN)

deTineo, B J; Booth, G; Firestone, R F; Greaves, M J; Hales, C; Lamoureux, J P; Ledford, R R

1982-08-01T23:59:59.000Z

202

Clay and non-clay minerals in the pharmaceutical industry Part I. Excipients and medical applications  

E-Print Network [OSTI]

Clay and non-clay minerals in the pharmaceutical industry Part I. Excipients and medical in the pharmaceutical industry as lubricants, desiccants, disintegrants, diluents, binders, pigments and opaci ers form 17 July 2009 Accepted 22 July 2009 Available online 29 July 2009 Keywords: Minerals Pharmaceutical

Ahmad, Sajjad

203

Review Article Clay and non-clay minerals in the pharmaceutical and cosmetic industries  

E-Print Network [OSTI]

Review Article Clay and non-clay minerals in the pharmaceutical and cosmetic industries Part II Pharmaceutical industry Cosmetic industry Active ingredients Physical and physico-chemical properties A wide range and variety of minerals are used in the pharmaceutical industry as active ingredients

Ahmad, Sajjad

204

First-exposure performance of the bentonite component of a GCL in a low-pH, calcium-enriched environment  

SciTech Connect (OSTI)

Testing was conducted on the bentonite portion of a Geosynthetic Clay Liner (GCL) for application to an environment characterized as having high concentrations of dissolved calcium ions. This environment presents conditions that might affect the long-term hydraulic function of the GCL as a component in a barrier system. Experiments were conducted to investigate first-exposure compatibility of a sodium bentonite GCL subject to the affects of acidic groundwater and second from the combined affects of acidic groundwater enriched with calcium. Relationships between the ionic exchange of sodium, potassium, magnesium and calcium species in the bentonite, and changes in hydraulic conductivity and electrical conductance are reported and discussed.

Quaranta, J.D.; Gabr, M.A. [West Virginia Univ., Morgantown, WV (United States). Dept. of Civil and Environmental Engineering; Bowders, J.J. [Univ. of Texas, Austin, TX (United States). Dept. of Civil Engineering

1997-11-01T23:59:59.000Z

205

Enchanted Clays: 44th Annual Meeting of the Clay Minerals Society (June 2007)  

SciTech Connect (OSTI)

“Enchanted Clays: 44th Annual Meeting of the Clay Minerals Society” was held in early June 2007 in beautiful and historic Santa Fe, New Mexico, USA. Santa Fe provided an idyllic location in the southwestern United States for the attendees to enjoy technical and social sessions while soaking up the diverse culture and wonderful climate of New Mexico—The Land of Enchantment. The meeting included a large and varied group of scientists, sharing knowledge and ideas, benefitting from technical interactions, and enjoying the wonderful historic and enchanted environs of Santa Fe. Including significant number of international scientists, the meeting was attended by approximately two hundred participants. The meeting included three days of technical sessions (oral and poster presentations), three days of field trips to clay and geological sites of northern New Mexico, and a full day workshop on the stabilization of carbon by clays. Details can be found at the meeting web site: www.sandia.gov/clay.

Randall T. Cygan

2007-06-01T23:59:59.000Z

206

A feasibility study of solar ponds for Wisconsin industrial process heat applications -- Impact of lining material  

SciTech Connect (OSTI)

An economic feasibility study of a salinity gradient solar pond for providing industrial process heat (IPH) in the state of Wisconsin is presented. A survey of current low temperature energy load demands of several companies within Wisconsin was completed. The data obtained was analyzed using a microcomputer based program to assess feasibility. Economic feasibility and thermal performance depends upon area. The area of the pond would determine the corresponding quantities of excavation, salt and lining material required to establish a salinity gradient solar pond (SGSP). The cost of the lining material also has a large impact upon the economic feasibility of a SGSP. The results of the economic feasibility study of a SGSP based on the selection of four types of liners is presented. These liners are a high density polyethylene (HDPE) liner, two forms of a geosynthetic clay liner (GCL) and a chemical and weather resistant polymer coated polyester fabric liner (XR-5). For a load of 10,000 GJ/month on an annual operating schedule for the most favorable economic performance resulted from a geosynthetic clay liner with a high density polyethylene backing. For a 10,000 m{sup 2} pond a payback of 8.4 years can be obtained with a unit cost of $43.20/m{sup 2}. It was also determined that if a larger load was demanded and the corresponding optimal area was provided the economic feasibility of a SGSP increased greatly. For a load of 100,000 GJ/Month on an annual operating schedule, using the same lining material, the optimal pond area was found to be 35,800 m{sup 2}, with a discounted payback of 3.8 years and a unit cost of $35.40/ms{sup 2}. Similar results were obtained for the other materials. From these findings it appears that a SGSP using a geosynthetic clay liner with HDPE backing will be economically feasible for a load of 10,000 GJ/month. The economic feasibility improves with increased thermal load and the corresponding optimal pond area.

Henning, M.A.; Reid, R.L. [Marquette Univ., Milwaukee, WI (United States). Coll. of Engineering

1995-10-01T23:59:59.000Z

207

Organic or organometallic template mediated clay synthesis  

DOE Patents [OSTI]

A method is described for incorporating diverse varieties of intercalates or templates directly during hydrothermal synthesis of clays such as hectorite or montmorillonite-type layer-silicate clays. For a hectorite layer-silicate clay, refluxing a gel of silica sol, magnesium hydroxide sol and lithium fluoride for two days in the presence of an organic or organometallic intercalate or template results in crystalline products containing either (a) organic dye molecules such as ethyl violet and methyl green, (b) dye molecules such as alcian blue that are based on a Cu(II)-phthalocyannine complex, or (c) transition metal complexes such as Ru(II)phenanthroline and Co(III)sepulchrate or (d) water-soluble porphyrins and metalloporphyrins. Montmorillonite-type clays are made by the method taught by U.S. Pat. No. 3,887,454 issued to Hickson, Jun. 13, 1975; however, a variety of intercalates or templates may be introduced. The intercalates or templates should have (i) water-solubility, (ii) positive charge, and (iii) thermal stability under moderately basic (pH 9-10) aqueous reflux conditions or hydrothermal pressurized conditions for the montmorillonite-type clays. 22 figures.

Gregar, K.C.; Winans, R.E.; Botto, R.E.

1994-05-03T23:59:59.000Z

208

Organic or organometallic template mediated clay synthesis  

DOE Patents [OSTI]

A method for incorporating diverse Varieties of intercalants or templates directly during hydrothermal synthesis of clays such as hectorite or montmorillonite-type layer-silicate clays. For a hectorite layer-silicate clay, refluxing a gel of silica sol, magnesium hydroxide sol and lithium fluoride for two days in the presence of an organic or organometallic intercalant or template results in crystalline products containing either (a) organic dye molecules such as ethyl violet and methyl green, (b) dye molecules such as alcian blue that are based on a Cu(II)-phthalocyannine complex, or (c) transition metal complexes such as Ru(II)phenanthroline and Co(III)sepulchrate or (d) water-soluble porphyrins and metalloporphyrins. Montmorillonite-type clays are made by the method taught by U.S. Pat. No. 3,887,454 issued to Hickson, Jun. 13, 1975; however, a variety of intercalants or templates may be introduced. The intercalants or templates should have (i) water-solubility, (ii) positive charge, and (iii) thermal stability under moderately basic (pH 9-10) aqueous reflux conditions or hydrothermal pressurized conditions for the montmorillonite-type clays.

Gregar, Kathleen C. (Bolingbrook, IL); Winans, Randall E. (Downers Grove, IL); Botto, Robert E. (Downers Grove, IL)

1994-01-01T23:59:59.000Z

209

The Large Scale Structure of LINERs and Seyferts and Implications for their Central Engines  

E-Print Network [OSTI]

We discuss here the spatial clustering of Seyferts and LINERs and consequences for their central engines. We show that Seyferts are less clustered than LINERs, and that this difference is not driven by the morphology-density relation, but it is related to the difference in clustering as a function of level of activity in these systems and the amount of fuel available for accretion. LINERs, which are the most clustered among AGN, show the lowest luminosities and obscuration levels, and relatively low gas densities, suggesting that these objects harbor black holes that are relatively massive yet weakly active or inefficient in their accretion, probably due to the insufficiency of their fuel supply. Seyferts, which are weakly clustered, are very luminous, show generally high gas densities and large quantities of obscuring material, suggesting that in these systems the black holes are less massive but abundantly fueled and therefore accrete quickly and probably efficiently enough to clearly dominate the ionization.

Anca Constantin; Michael S. Vogeley

2006-12-15T23:59:59.000Z

210

Design report on the SSCL prototype 80 K Synchrotron Radiation Liner System  

SciTech Connect (OSTI)

This report documents the effort to develop a viable design for an SSC prototype 80 K Synchrotron Radiation Liner System. This liner is designed to be tested in the Superconducting Super Collider Accelerator Systems String Test (ASST) facility. The liner is one method under consideration to minimize the presence of photodesorbed gases in the particle beam line vacuum environment. Secondly, the liner is aimed at improving the Collider cryogenic thermal efficiency which would allow a potential luminosity upgrade. The SSC Collider is the first proton superconducting accelerator designed to operate at an energy of 20 TeV (each beam) and a beam current of 72 mA. The Collider will produce a synchrotron power of 0.14 W/m and a total of 18 kW into 4.2 K for the two rings. This radiated power may trigger a serious impact of photodesorbed gases on the operational availability of the Collider. The interaction between beam particle and photodesorbed gases may greatly reduce the beam lifetime and the scattered beam power may lead to quenching of the superconducting magnets. Collider availability may be unacceptable if this concern is not properly addressed. The liner is one method under consideration to minimize the presence of photodesorbed gases in the particle beam line vacuum. Secondly, the liner is aimed improving the Collider`s cryogenic thermal efficiency which would allow a potential luminosity upgrade. The ultimate goal is to require no more than one machine warm up per year for vacuum maintenance during operation of the SSC Collider.

Shu, Q.S.; Barts, T.; Chou, W. [and others

1993-09-01T23:59:59.000Z

211

Prospects for x-ray polarimetry measurements of magnetic fields in magnetized liner inertial fusion plasmas  

SciTech Connect (OSTI)

Magnetized Liner Inertial Fusion (MagLIF) experiments, where a metal liner is imploded to compress a magnetized seed plasma may generate peak magnetic fields ?10{sup 4} T (100 Megagauss) over small volumes (?10{sup ?10}m{sup 3}) at high plasma densities (?10{sup 28}m{sup ?3}) on 100 ns time scales. Such conditions are extremely challenging to diagnose. We discuss the possibility of, and issues involved in, using polarimetry techniques at x-ray wavelengths to measure magnetic fields under these extreme conditions.

Lynn, Alan G., E-mail: lynn@ece.unm.edu; Gilmore, Mark [Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87131 (United States)

2014-11-15T23:59:59.000Z

212

Process for the control of liner impurities and light water reactor cladding  

SciTech Connect (OSTI)

This patent describes a process for making an electron beam melted fuel element liner material from sponge zirconium. The improvement consists of: electron beam melting sponge zirconium to form an essentially aluminum-free zirconium material; and melting the essentially aluminum-free zirconium material in a vacuum arc furnace with an alloying charge, the alloying charge comprising 0.1-2.0 weight percent of at least one alloying element selected from the group consisting of tin and iron, to form an essentially aluminum-free zirconium alloy fuel element liner material.

Sabol, G.P.; Worcester, S.A.; Foster, J.P.

1989-03-21T23:59:59.000Z

213

Plasticity of the Dakota Clays of Kansas  

E-Print Network [OSTI]

of plasticity from the physico-chemical direction were made by more recent investigators, for example, Ashley, in this cotmnfcry, has experimented with clays in order to e:q}lain th9 cause of plasticity by measuring the colloids of the clay. He was then able... of the present day conception of the colloidal state of' matter, Thomas Graham (9) an English physicist, working on his classical experiments 1860 - 64, on diffusion or dtlysis was led to divide substances into two groups, according *as the rate of diffusion...

Belchic, George

1915-06-01T23:59:59.000Z

214

References on Ball Clay U.S. Geological Survey  

E-Print Network [OSTI]

: The American Ceramic Society Bulletin, v. 75, no. 6, June, p. 74-76. ------, 1992, Ball and plastic clay, Metallurgy, and Explorations, Inc., Littleton, P. 255-277. Stentiford, M.J., 1996, Ball clay-demand strong

215

Los Alamos compact toroid, fast-liner, and high-density Z-pinch programs  

SciTech Connect (OSTI)

The Compact Toroid (CT) and High Density Z-Pinch (HDZP) are two of the plasma configurations presently being studied at Los Alamos. The purpose of these two programs, plus the recently terminated (May 1979) Fast Liner (FL) program, is summarized in this section along with a brief description of the experimental facilities. The remaining sections summarize the recent results and the experimental status.

Linford, R.K.; Sherwood, A.R.; Hammel, J.E.

1981-03-01T23:59:59.000Z

216

Centrality and vulnerability in liner shipping networks: revisiting the Northeast Asian port hierarchy  

E-Print Network [OSTI]

1 Centrality and vulnerability in liner shipping networks: revisiting the Northeast Asian port@parisgeo.cnrs.fr Sung-Woo LEE Korea Maritime Institute Shipping, Port & Logistics Research Department KBS media Center: revisiting the Northeast Asian port hierarchy Abstract This paper is essentially an empirical investigation

Paris-Sud XI, Université de

217

A New Environmentally Friendly AL/ZR-Based Clay Stabilizer  

E-Print Network [OSTI]

Clay stabilizers are means to prevent fines migration and clay swelling, which are caused by the contact of formation with low salinity or high pH brines at high temperature. Previous clay stabilizers including: Al and Zr compounds and cationic...

El-Monier, Ilham Abdallah

2013-01-18T23:59:59.000Z

218

STAR FORMATION IN LINER HOST GALAXIES AT z {approx} 0.3  

SciTech Connect (OSTI)

We present the results of a Herschel-PACS study of a sample of 97 low-ionization nuclear emission-line regions (LINERs) at redshift z {approx} 0.3 selected from the zCOSMOS survey. Of these sources, 34 are detected in at least one PACS band, enabling reliable estimates of the far-infrared L{sub FIR} luminosities, and a comparison to the FIR luminosities of local LINERs. Many of our PACS-detected LINERs are also UV sources detected by GALEX. Assuming that the FIR is produced in young dusty star-forming regions, the typical star formation rates (SFRs) for the host galaxies in our sample are {approx}10 M{sub Sun} yr{sup -1}, 1-2 orders of magnitude larger than in many local LINERs. Given stellar masses inferred from optical/NIR photometry of the (unobscured) evolved stellar populations, we find that the entire sample lies close to the star-forming 'main sequence' for galaxies at redshift 0.3. For young star-forming regions, the H{alpha}- and UV-based estimates of the SFRs are much smaller than the FIR-based estimates, by factors {approx}30, even assuming that all of the H{alpha} emission is produced by O-star ionization rather than by the active galactic nuclei (AGNs). These discrepancies may be due to large (and uncertain) extinctions toward the young stellar systems. Alternatively, the H{alpha} and UV emissions could be tracing residual star formation in an older, less obscured population with decaying star formation. We also compare L{sub SF} and L(AGN) in local LINERs and in our sample. Finally, we comment on the problematic use of several line diagnostic diagrams in cases with an estimated obscuration similar to that in the sample under study.

Tommasin, Silvia; Netzer, Hagai; Sternberg, Amiel [School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978 (Israel); Nordon, Raanan; Lutz, Dieter; Berta, Stefano; Magnelli, Benjamin [MPE, Postfach 1312, 85741 Garching (Germany); Bongiorno, Angela [INAF-Oservatorio Astronomico di Roma, via Frascati 33, 00040 Monte Porzio Catone (Roma) (Italy); Le Floc'h, Emeric; Riguccini, Laurie [Laboratoire AIM, CEA/DSM-CNRS-Universite Paris Diderot, IRFU/Service d'Astrophysique, Bat 709, CEA-Saclay, 91191 Gif-sur-Yvette Cedex (France); Pozzi, Francesca [Dipartimento di Astronomia, Universita degli Studi di Bologna, via Ranzani 1, 40127 Bologna (Italy)

2012-07-10T23:59:59.000Z

219

Influence of formation clays on the flow of aqueous fluids  

SciTech Connect (OSTI)

Most sandstone formations contain clays that can have a significant effect on the flow of aqueous fluids. The clays most frequently detected are smectite, mixed layer, illite, kaolinite, and chlorite. All of these clays are capable of migrating and causing permeability damage when they are contacted by waters foreign to the formation. Normally, these waters alter ionic environments around the clays, which causes the clays to be dislodged from their original positions. Thus, any time clay is present in the rock, it can be assumed that permeability damage can occur. The degree of damage depends upon the concentration and types of clays present, their relative position in the rock, the severity of the ionic environmental change; and fluid velocity. Permeability damage has been minimized in oil and gas wells through the use of potassium and ammonium ions. 15 references.

Hower, W.F.

1981-01-01T23:59:59.000Z

220

Low-level radioactive mixed waste land disposal facility -- Permanent disposal  

SciTech Connect (OSTI)

Radioactive mixed waste (RMW) disposal at US Department of Energy (DOE) facilities is subject to the Resource Conservation and Recovery Act of 1976 (RCRA) and the Hazardous and Solid Waste Amendments of 1984 (HSWA). Westinghouse Hanford Company, in Richland, Washington, has completed the design of a radioactive mixed waste land disposal facility, which is based on the best available technology compliant with RCRA. When completed, this facility will provide permanent disposal of solid RMW, after treatment, in accordance with the Land Disposal Restrictions. The facility includes a double clay and geosynthetic liner with a leachate collection system to minimize potential leakage of radioactive or hazardous constituents from the landfill. The two clay liners will be capable of achieving a permeability of less than 1 {times} 10{sup {minus}7} cm/s. The two clay liners, along with the two high density polyethylene (HDPE) liners and the leachate collection and removal system, provide a more than conservative, physical containment of any potential radioactive and/or hazardous contamination.

Erpenbeck, E.G.; Jasen, W.G.

1993-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Clay mineral reactions in clastic diagenesis  

SciTech Connect (OSTI)

Studies of clastic sediments have documented the formation and transformation of clay mineral assemblages during burial diagensis. The transformation of smectite to illite in shale by its reaction with the decomposition products of detrital K-feldspar and mica results in the production of new pore water at depth. The overall reaction mobilizes all the major chemical components in the shale, most of which are consumed in the formation of the diagenetic assemblage illite/smectite + chlorite + quartz. However, part of all the components is undoubtedly transported from the shale to sandstone units and is involved in cementation, replacement, and diagenetic clay mineral formation in these reservoir rocks. In contrast to burial diagenetic reactions in shale, where the sequence is monotonic and reasonably predictable, diagenetic reactions in sandstone are frequently variable. This variability is probably attributable to the fact that sandstones are open systems in which the reactions that proceed are controlled in part by the influx of new pore water, the chemistry of which is determined by an outside source. The useful understanding role of clay minerals in hydrocarbon exploration will follow from a determination of the system shale/sandstone/organic material. We need to tie in the nature and timing of shale mineral reactions and their control on the fluid and mass transfer from shale to sandstone.

Hower, J.

1983-03-01T23:59:59.000Z

222

Iodide Sorption to Clays and the Relationship to Surface Charge and Clay Texture - 12356  

SciTech Connect (OSTI)

Iodine is assumed to behave conservatively in clay barriers around nuclear waste repositories and in natural sediments. Batch experiments tend to show little to no sorption, while in column experiments iodine is often retarded relative to tritiated water. Current surface complexation theory cannot account for negatively charged ion sorption to a negatively charged clay particle. Surface protonation and iodide sorption to clay minerals were examined using surface titrations and batch sorption experiments with a suite of clay minerals. Surface titrations were completed spanning a range of both pH values and ionic strengths. For reference, similar titrations were performed on pure forms of an Al-O powder. The titration curves were deconvoluted to attain the pKa distribution for each material at each ionic strength. The pKa distribution for the Al-O shows two distinct peaks at 4.8 and 7.5, which are invariant with ionic strength. The pKa distribution of clays was highly variable between the different minerals and as a function of ionic strength. Iodide sorption experiments were completed at high solid:solution ratios to exacerbate sorption properties. Palygorskite and kaolinite had the highest amount of iodide sorption and montmorillonite had the least. (authors)

Miller, Andrew; Kruichiak, Jessica; Tellez, Hernesto; Wang, Yifeng [Sandia National Laboratories, Albuquerque, NM 87185 (United States)

2012-07-01T23:59:59.000Z

223

Modeling of liner finish effects on oil control ring lubrication in internal combustion engines based on deterministic method  

E-Print Network [OSTI]

Twin-land oil control ring is widely used in the automotive diesel engines, and is gaining more and more applications in the modern designs of gasoline engines. Its interaction with the cylinder liner surface accounts for ...

Chen, Haijie

2008-01-01T23:59:59.000Z

224

Device and method for imploding a microsphere with a fast liner  

DOE Patents [OSTI]

A device and method for relativistic electron beam heating of a high-density plasma in a small localized region. A relativistic electron beam generator or accelerator produces a high-voltage electron beam which propagates along a vacuum drift tube and is modulated to initiate electron bunching within the beam. The beam is then directed through a low-density gas chamber which provides isolation between the vacuum modulator and the relativistic electron beam target. The relativistic beam is then applied to a high-density target plasma which typically comprises DT, DD, hydrogen boron or similar thermonuclear gas at a density of 10.sup.17 to 10.sup.20 electrons per cubic centimeter. The target gas is ionized prior to application of the electron beam by means of a laser or other preionization source to form a plasma. Utilizing a relativistic electron beam with an individual particle energy exceeding 3 MeV, classical scattering by relativistic electrons passing through isolation foils is negligible. As a result, relativistic streaming instabilities are initiated within the high-density target plasma causing the relativistic electron beam to efficiently deposit its energy and momentum into a small localized region of the high-density plasma target. Fast liners disposed in the high-density target plasma are explosively or ablatively driven to implosion by a heated annular plasma surrounding the fast liner generated by an annular relativistic electron beam. An azimuthal magnetic field produced by axial current flow in the annular plasma, causes the energy in the heated annular plasma to converge on the fast liner to drive the fast liner to implode a microsphere.

Thode, Lester E. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

225

Inferred performance of surface hydraulic barriers from landfill operational data  

SciTech Connect (OSTI)

There are few published data on the field performance of surface hydraulic barriers (SHBs) used in waste containment or remediation applications. In contrast, operational data for liner systems used beneath landfills are widely available. These data are frequently collected and reported as a facility permit condition. This paper uses leachate collection system (LCS) and leak detection system (LDS) liquid flow rate and chemical quality data collected from modem landfill double-liner systems to infer the likely hydraulic performance of SHBs. Operational data for over 200 waste management unit liner systems are currently being collected and evaluated by the authors as part of an ongoing research investigation for the United States Environmental Protection Agency (USEPA). The top liner of the double-liner system for the units is either a geomembrane (GMB) alone, geomembrane overlying a geosynthetic clay liner (GMB/GCL), or geomembrane overlying a compacted clay liner (GMB/CCL). In this paper, select data from the USEPA study are used to: (i) infer the likely efficiencies of SHBs incorporating GMBs and overlain by drainage layers; and (ii) evaluate the effectiveness of SHBs in reducing water infiltration into, and drainage from, the underlying waste (i.e., source control). SHB efficiencies are inferred from calculated landfill liner efficiencies and then used to estimate average water percolation rates through SHBs as a function of site average annual rainfall. The effectiveness of SHBs for source control is investigated by comparing LCS liquid flow rates for open and closed landfill cells. The LCS flow rates for closed cells are also compared to the estimated average water percolation rates through SHBs presented in the paper.

Gross, B.A. [GeoSyntec Consultants, Austin, TX (United States); Bonaparte, R.; Othman, M.A. [GeoSyntec Consultants, Atlanta, GA (United States)

1997-12-31T23:59:59.000Z

226

Melt Infiltrated Ceramic Matrix Composites for Shrouds and Combustor Liners of Advanced Industrial Gas Turbines  

SciTech Connect (OSTI)

This report covers work performed under the Advanced Materials for Advanced Industrial Gas Turbines (AMAIGT) program by GE Global Research and its collaborators from 2000 through 2010. A first stage shroud for a 7FA-class gas turbine engine utilizing HiPerComp{reg_sign}* ceramic matrix composite (CMC) material was developed. The design, fabrication, rig testing and engine testing of this shroud system are described. Through two field engine tests, the latter of which is still in progress at a Jacksonville Electric Authority generating station, the robustness of the CMC material and the shroud system in general were demonstrated, with shrouds having accumulated nearly 7,000 hours of field engine testing at the conclusion of the program. During the latter test the engine performance benefits from utilizing CMC shrouds were verified. Similar development of a CMC combustor liner design for a 7FA-class engine is also described. The feasibility of using the HiPerComp{reg_sign} CMC material for combustor liner applications was demonstrated in a Solar Turbines Ceramic Stationary Gas Turbine (CSGT) engine test where the liner performed without incident for 12,822 hours. The deposition processes for applying environmental barrier coatings to the CMC components were also developed, and the performance of the coatings in the rig and engine tests is described.

Gregory Corman; Krishan Luthra; Jill Jonkowski; Joseph Mavec; Paul Bakke; Debbie Haught; Merrill Smith

2011-01-07T23:59:59.000Z

227

Tribological evaluation of piston skirt/cylinder liner contact interfaces under boundary lubrication conditions.  

SciTech Connect (OSTI)

The friction and wear between the piston and cylinder liner significantly affects the performance of internal combustion engines. In this paper, segments from a commercial piston/cylinder system were tribologically tested using reciprocating motion. The tribological contact consisted of aluminium alloy piston segments, either uncoated, coated with a graphite/resin coating, or an amorphous hydrogenated carbon (a-C : H) coating, in contact with gray cast iron liner segments. Tests were conducted in commercial synthetic motor oils and base stocks at temperatures up to 120 C with a 2 cm stroke length at reciprocating speeds up to 0.15 m s{sup -1}. The friction dependence of these piston skirt and cylinder liner materials was studied as a function of load, sliding speed and temperature. Specifically, an increase in the sliding speed led to a decrease in the friction coefficient below approximately 70 C, while above this temperature, an increase in sliding speed led to an increase in the friction coefficient. The presence of a coating played an important role. It was found that the graphite/resin coating wore quickly, preventing the formation of a beneficial tribochemical film, while the a-C : H coating exhibited a low friction coefficient and provided significant improvement over the uncoated samples. The effect of additives in the oils was also studied. The tribological behaviour of the interface was explained based on viscosity effects and subsequent changes in the lubrication regime, formation of chemical and tribochemical films.

Demas, N. G.; Erck, R. A.; Fenske, G. R.; Energy Systems

2010-03-01T23:59:59.000Z

228

Improved geomembrane damage/leak detection through co-extrusion technology  

SciTech Connect (OSTI)

There has been a considerable advancement in technology available for providing a barrier system in the containment and storage of waste materials. Natural soil liners several feet in thickness have been augmented by factory-produced, synthetic materials that have permeability coefficients several orders of magnitude lower than any natural soil system. To carry the systems approach one step farther, engineers use multiple layers of synthetics separated at times by layers of clay offering a redundant composite barrier to protect the groundwater. Each geosynthetic material offers its own unique contribution to the system based upon its physical characteristics. Co-extrusion -- the process of combining two or more materials into a single product, through a single process -- is now revolutionizing the liner industry.

Messmer, D.P.; Cadwallader, M. (Gundle Lining Systems, Inc., Houston, TX (United States))

1994-04-01T23:59:59.000Z

229

Clay Electric Cooperative, Inc- Energy Smart Energy Efficiency Rebate Program  

Broader source: Energy.gov [DOE]

Rebates are available only to Clay Electric Cooperative (CEC) residential members who are making efficiency upgrades to primary residence served by CEC. Rebates are available for residential...

230

The need to design and construct roadways on highly plastic clays is common in central and eastern Texas, where expansive clays are prevalent. Roadways constructed on highly plastic clay subgrades may be damaged  

E-Print Network [OSTI]

The need to design and construct roadways on highly plastic clays is common in central and eastern Texas, where expansive clays are prevalent. Roadways constructed on highly plastic clay subgrades may the infiltration of water into highly plastic clays under an increased gravity field in a centrifuge. Project

Zornberg, Jorge G.

231

Investigations of Near-Field Thermal-Hydrologic-Mechanical-Chemical Models for Radioactive Waste Disposal in Clay/Shale Rock  

E-Print Network [OSTI]

of a jurassic opalinum shale, switzerland. Clays and Clay96   1 INTRODUCTION Clay/shale has been considered asand Rupture of Heterogeneous Shale Samples by Using a Non-

Liu, H.H.

2012-01-01T23:59:59.000Z

232

CLAY MINERALS OF THE FRONT RANGE: A FIELD GUIDE TO THE GEOLOGY, HISTORY, AND CLAY MINERALOGY OF THE CHIEFTAIN MINE,  

E-Print Network [OSTI]

.................................................... 71 Appendix I: Clay Minerals Society field trip mileage log ............... 76 #12;FIGURES 1. Line ......................................... 21 7. Robinson Brick Company history ................................... 22 8. Diffractogram showing

233

The washability of lignites for clay removal  

SciTech Connect (OSTI)

In the washability research of the Seyitomer Lignites (Kutahya-Turkey), with lower calorific value (1,863 kcal/kg) and high ash content (51.91%), by heavy medium separation, it was found out that middling clay in the coal had an effect to change the medium density. To prevent this problem, a trommel sieve with 18 and 5 mm aperture diameter was designed, and the clay in the coal was tried to be removed using it before the coal was released to heavy medium. Following that, the obtained coal in -100 + 18 mm and -18 + 5 mm fractions was subjected to sink and float test having 1.4 gcm{sup -3} and 1.7 gcm{sup -3} medium densities (-5 mm fraction will be evaluated in a separate work). Depending on the raw coal, with the floating of -100 + 18 mm and -18 + 5 mm size fraction in 1.4 gcm{sup -3} medium density, clean coal with 60.10% combustible matter recovery, 19.12% ash, and 3,150 kcal/kg was obtained. Also floating of the samples sinking in 1.4 gcm{sup -3} in the medium density (1.7 gcm{sup -3}), middling with 18.70% combustible matter recovery, 41.93% ash, 2,150 kcal/kg, and tailing having 78.31% ash were obtained.

Oteyaka, B.; Yamik, A.; Ucar, A.; Sahbaz, O.; Demir, U. [Dumlupinar University, Kutahya (Turkey). Dept. of Mining Engineering

2008-07-01T23:59:59.000Z

234

Clay mineralogy and its effect on physical properties in the Gulf of Mexico northwestern continental slope  

E-Print Network [OSTI]

The clay mineral composition of sediments deposited in the last six oxygen isotope stages in the Gulf of Mexico continental slope was characterized. Smectite and illite were found to be the two major clay minerals of the clay fraction while...

Berti, Debora

2005-02-17T23:59:59.000Z

235

... FIELD TRIP GUIDEBOOK ON ENVIRONMENTAL IMPACT OF CLAYS  

E-Print Network [OSTI]

... FIELD TRIP GUIDEBOOK ON ENVIRONMENTAL IMPACT OF CLAYS ALONG THE UPPER TEXAS COAST NI Lyndon B. Johnson Space Center Houston, Texas &II LPI #12;FIELD TRIP GUIDEBOOK ON ENVIRONMENTAL IMPACT.....................................................................................................................................vi Introduction: Environmental Impact of Clays Along the Upper Texas Coast

Rathbun, Julie A.

236

Water in clay-water systems (1) Philip F. LOW  

E-Print Network [OSTI]

Water in clay-water systems (1) Philip F. LOW Department of Agronomy, Purdue University. Agric. Exp. Stn., West Lafayette, IN 47907, U.S.A. SUMMARY The swelling of clay-water systems and the thermodynamic, hydrodynamic and spectroscopic properties of water in these systems are discussed. The swelling

Paris-Sud XI, Université de

237

Characterization of Gulf of Mexico Clay Using Automated Triaxial Testing  

E-Print Network [OSTI]

of offshore structures. Thus there is a need to study and understand properties of offshore marine clays on slopes. This study was undertaken in order to understand better the characteristics of a sub-marine clay deposit taken from the Gulf of Mexico...

Murali, Madhuri

2012-02-14T23:59:59.000Z

238

Preparation and Properties of Recycled HDPE/Clay Hybrids  

E-Print Network [OSTI]

on recycled high density poly- ethylene (RHDPE) and organic clay were made by melt com- pounding; recycling INTRODUCTION Plastics account for an increasing fraction of municipal solid waste around the worldPreparation and Properties of Recycled HDPE/Clay Hybrids Yong Lei,1 Qinglin Wu,1 Craig M. Clemons2

239

Fire Clay coal and sandstone washouts  

SciTech Connect (OSTI)

The Fire Clay coal bed has been studied in a portion of southeastern Kentucky. This seam is easily recognizable by a distinctive flint clay parting. Mine maps, field descriptions, and laboratory investigations were used to investigate this coal bed. Several elongate sandstone bodies cut the seam in the study area. These sandstone bodies are subparallel roughly east-west, and are typically 10[sup 1] to 10[sup 2] m wide, and 10[sup 2] m to tens of kilometers long. These sandstone washouts occur in areas overlain by a larger channel sandstone, which usually is found associated with the thickest areas of the coal seam. In south-central Perry County, a cross section of one washout area was well exposed. North of the washout, a 4 to 7 cm thick cannel coal was present at the base of the sequence. The coal on the north side of the cutout gradually thins from 2 m to 1.5 m away from the washout. On the south side of the washout, the coal thins abruptly from over 1.5 m to 1.25 m within 30 m of the channel. An island of slumped and slickensided coal is present within the washout region. Postdepositional differential compaction of the peat is inferred to be the control on placement of the channel system. The areas of thickest peat compacted the most, creating topographic lows through which the stream moved. The regions of thick coal were probably the result of several controlling factors. Predepositional differential compaction and erosion may have produced relief which influenced peat development. Lithologic and geochemical continuity across the channel is good, supporting postdepositional emplacement of the sandstone bodies.

Andrews, W.M. Jr.; Hower, J.C. (Univ. of Kentucky, Lexington, KY (United States). Center for Applied Energy Research)

1992-01-01T23:59:59.000Z

240

Performance characteristics of a self-sealing/self-healing barrier  

SciTech Connect (OSTI)

Environment Canada and the Netherlands Energy Research Foundation are co-developers of a patented Self-Sealing/Self-Healing (SS/SH) Barrier system for containment of wastes which is licensed to Water Technology International Corporation. The SS/SH Barrier is intended for use as either a liner or cover for landfills, contaminated sites, secondary containment areas, etc., in the industrial, chemical, mining and municipal sectors, and also as a barrier to hydraulic flow for the transportation and construction industry. The SS/SH Barrier`s most significant feature is its capability for self-repair in the event of a breach. By contrast, conventional barrier systems, such as clay, geomembrane, or geosynthetic clay liners can not be repaired without laborious excavation and reconstruction. Laboratory investigations have shown that the SS/SH Barrier concept will function with a variety of reactive materials. Self-Sealing/Self-Healing Barriers are cost competitive and consistently exhibit hydraulic conductivities ranging from 10{sup -9} to 10{sup -13} m/s, which decrease with time. These measurements meet or exceed the recommended hydraulic conductivity required by EPA for clay liners (<1x10{sup -9} m/s) used in landfills and hazardous waste sites. Results of mineralogical examination of the seal, diffusion testing, hydraulic conductivity measurement, and durability testing, including wet/dry, freeze/thaw cycling and leachate compatibility are also presented.

McGregor, R.G. [Water Technology International Corp., Burlington, Ontario (Canada); [Canadian Clean Technology Centre, Burlington, Ontario (Canada); Stegemann, J.A. [Canadian Clean Technology Centre, Burlington, Ontario (Canada)

1997-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Characterization of melt-infiltrated SiC/SiC composite combustor liners using meso- and micro-NDE techniques  

SciTech Connect (OSTI)

Melt-infiltrated ceramic matrix composite SiC/SiC material systems are under development for use in combustor liners for low-emission advanced gas turbines. Uncertainty in repeatability of processing methods for these large components (33--76 cm diameter), and hence possible reduced reliability for the end user. This requires that appropriate test methods, at both meso- and micro-scale, be used to ensure that the liners are acceptable for use. Nondestructive evaluation (NDE) methods, if demonstrated to reliably detect changes caused by processing, would be of significant benefit to both manufacturer and end user. This paper describes the NDE methods and their applications in detecting a process upset in a melt-infiltrated 33 cm combustor liner and how high-resolution scanning electron microscopy was used to verify the NDE data.

Ellingson, W. A.; Sun, J. G.; More, K. L.; Hines, R.

2000-01-26T23:59:59.000Z

242

Soil Insulation For Barrier Layer Protection In Landfill Covers  

E-Print Network [OSTI]

Landfill covers are designed to isolate waste from the environment by incorporating low-permeability barrier layers. The barrier layer minimizes and controls gas escaping from the waste and the amount of infiltrating moisture available for leachate generation. Barrier layers are typically designed and constructed of a thick layer of compacted fine-grain native soil material or a manufactured geosynthetic clay liner. The barrier layer must be protected from frost damage. Freezing of a compacted soil layer has been shown to cause quick and irreversible degradation. Large increases in permeability have been demonstrated in compacted clay barriers subjected to a minimum number of freezing and thawing cycles. Design methods to protect the barrier layer from frost damage have not been addressed in the research literature. A design procedure is addressed in this paper that determines the thickness of soil required to protect a barrier layer. The procedure is based on sitespecific temperature ...

Gregory Smith Roy

243

Calcium and sodium bentonite for hydraulic containment applications  

SciTech Connect (OSTI)

The hydraulic conductivity of calcium and sodium bentonites was investigated for sand-bentonite mixtures, a thin bentonite layer simulating a geosynthetic clay liner (GCL), and bentonite-cement mixtures simulating backfill for a vertical cutoff wall. The permeant liquids were tap water and distilled water containing 0.25 M calcium chloride. In general, the hydraulic performance of calcium bentonite was not significantly better than the performance of sodium bentonite for either the clay-amended sand or the GCL application, and was substantially worse than the performance of sodium bentonite in the bentonite-cement mixture. A drained angle of internal friction of 21{degree} was measured for calcium bentonite, compared to 10{degree} for sodium bentonite. Except for a larger drained shear strength, no advantage of calcium bentonite over sodium bentonite could be identified from the results of this study.

Gleason, M.H. [GeoSyntec Consultants, Columbia, MD (United States); Daniel, D.E. [Univ. of Illinois, Urbana, IL (United States). Dept. of Civil Engineering; Eykholt, G.R. [Univ. of Wisconsin, Madison, WI (United States). Dept. of Civil Engineering

1997-05-01T23:59:59.000Z

244

Design, engineering, and evaluation of refractory liners for slagging gasifiers. Second annual technical progress report, 1 October 1979-30 September 1980  

SciTech Connect (OSTI)

The program has been making steady progress to completion. The refractory liner test system is a much more complex design than originally proposed, but it is also safer and better able to simulate the actual coal gasification environment to which refractories will be exposed. Consequently, the data from the tests will be more reliable and the final handbook more useful for refractory liner design.

Booth, G.; Firestone, R. F.; Greaves, M. J.; Hales, C.; Lamoureux, J. P.; Ledford, R. R.

1980-10-01T23:59:59.000Z

245

Leak detection systems for uranium mill tailings impoundments with synthetic liners  

SciTech Connect (OSTI)

This study evaluated the performance of existing and alternative leak detection systems for lined uranium mill tailings ponds. Existing systems for detecting leaks at uranium mill tailings ponds investigated in this study included groundwater monitoring wells, subliner drains, and lysimeters. Three alternative systems which demonstrated the ability to locate leaks in bench-scale tests included moisture blocks, soil moisture probes, and a soil resistivity system. Several other systems in a developmental stage are described. For proper performance of leak detection systems (other than groundwater wells and lysimeters), a subgrade is required which assures lateral dispersion of a leak. Methods to enhance dispersion are discussed. Cost estimates were prepared for groundwater monitoring wells, subliner drain systems, and the three experimental systems. Based on the results of this report, it is suggested that groundwater monitoring systems be used as the primary means of leak detection. However, if a more responsive system is required due to site characteristics and groundwater quality criteria, subliner drains are applicable for ponds with uncovered liners. Leak-locating systems for ponds with covered liners require further development. Other recommendations are discussed in the report.

Myers, D.A.; Tyler, S.W.; Gutknecht, P.J.; Mitchell, D.H.

1983-09-01T23:59:59.000Z

246

Macron Formed Liner Compression as a Practical Method for Enabling Magneto-Inertial Fusion  

SciTech Connect (OSTI)

The entry of fusion as a viable, competitive source of power has been stymied by the challenge of finding an economical way to provide for the confinement and heating of the plasma fuel. The main impediment for current nuclear fusion concepts is the complexity and large mass associated with the confinement systems. To take advantage of the smaller scale, higher density regime of magnetic fusion, an efficient method for achieving the compressional heating required to reach fusion gain conditions must be found. The very compact, high energy density plasmoid commonly referred to as a Field Reversed Configuration (FRC) provides for an ideal target for this purpose. To make fusion with the FRC practical, an efficient method for repetitively compressing the FRC to fusion gain conditions is required. A novel approach to be explored in this endeavor is to remotely launch a converging array of small macro-particles (macrons) that merge and form a more massive liner inside the reactor which then radially compresses and heats the FRC plasmoid to fusion conditions. The closed magnetic field in the target FRC plasmoid suppresses the thermal transport to the confining liner significantly lowering the imploding power needed to compress the target. With the momentum flux being delivered by an assemblage of low mass, but high velocity macrons, many of the difficulties encountered with the liner implosion power technology are eliminated. The undertaking to be described in this proposal is to evaluate the feasibility achieving fusion conditions from this simple and low cost approach to fusion. During phase I the design and testing of the key components for the creation of the macron formed liner have been successfully carried out. Detailed numerical calculations of the merging, formation and radial implosion of the Macron Formed Liner (MFL) were also performed. The phase II effort will focus on an experimental demonstration of the macron launcher at full power, and the demonstration of megagauss magnetic field compression by a small array of full scale macrons. In addition the physics of the compression of an FRC to fusion conditions will be undertaken with a smaller scale MFL. The timescale for testing will be rapidly accelerated by taking advantage of other facilities at MSNW where the target FRC will be created and translated inside the MFL just prior to implosion of the MFL. Experimental success would establish the concept at the �proof of principle� level and the following phase III effort would focus on the full development of the concept into a fusion gain device. Successful operation would lead to several benefits in various fields. It would have application to high energy density physics, as well as nuclear waste transmutation and alternate fission fuel cycles. The smaller scale device could find immediate application as an intense source of neutrons for diagnostic imaging and non-invasive object interrogation.

Slough, John

2011-12-10T23:59:59.000Z

247

Intercalation of Trichloroethene by Sediment-Associated Clay Minerals  

SciTech Connect (OSTI)

The objective of this research was to examine the potential for intercalation of trichloroethene (TCE) by clay minerals associated with aquifer sediments. Sediment samples were collected from a field site inTucson, AZ. Two widely used Montmorillonite specimen clays were employed as controls. X-ray diffraction, conducted with a controlled-environment chamber, was used to characterize smectite interlayer dspacing for three treatments (bulk air-dry sample, sample mixed with synthetic groundwater, sample mixed with TCE-saturated synthetic groundwater). The results show that the d-spacing measured for the samples treated with TCE-saturated synthetic groundwater are larger (*26%) than those of the untreated samples for all field samples as well as the specimen clays. These results indicate that TCE was intercalated by the clay minerals, which may have contributed to the extensive elution tailing observed in prior miscible-displacement experiments conducted with this sediment.

Matthieu, Donald E.; Brusseau, Mark; Johnson, G. R.; Artiola, J. L.; Bowden, Mark E.; Curry, J. E.

2013-01-01T23:59:59.000Z

248

The mechanical behavior of heavily overconsolidated resedimented Boston Blue Clay  

E-Print Network [OSTI]

Geotechnical engineers encounter some of the most challenging problems in heavily overconsolidated soils. Clays under this condition originated in nature or man-made construction. This thesis investigates the mechanical ...

Vargas Bustamante, Albalyra Geraldine

2013-01-01T23:59:59.000Z

249

Limits of isotropic plastic deformation of Bangkok clay  

E-Print Network [OSTI]

A model assuming incremental plastic isotropic response has been recently proposed to model the deformation of isotropic packing of grains, in the small-strain range. It is used here on over-consolidated remould clay, to interpret the small-strain range behaviour obtained in [1,2] on Bangkok clay. The data published in [1,2] at constant volume are also used here to measure the size of the domain of validity in the (q/(M'p), p/po) plane, where po is the over-consolidation isotropic pressure, p is the mean stress and q the deviatoric stress, q . So, it is shown that the model works also for clay. This enlarges the application domain of model [3,4] to soft clay with OCR larger than 1.2 to 1.5. Pacs # : 45.70.-n ; 62.20.Fe ; 83.80.Fg, 83.80.Hj

P. Evesque

2005-07-08T23:59:59.000Z

250

Analysis of consolidation around driven piles in overconsolidated clay  

E-Print Network [OSTI]

The principal objective of this thesis is to assess the capabilities of an already established analytical framework for understanding and predicting the behavior of piles driven in highly overconsolidated clays (OCR24). ...

Niarchos, Dimitrios G

2012-01-01T23:59:59.000Z

251

Platte-Clay Electric Cooperative- Residential Energy Efficiency Rebates  

Broader source: Energy.gov [DOE]

Platte-Clay Electric Cooperative offers a variety of rebates to residential and commercial customers who wish to upgrade to energy efficient equipment. Newly installed ground source heat pumps are...

252

Quantum Chemistry of CO2 Interaction with Swelling Clays | netl...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Quantum Chemistry of CO2 Interaction with Swelling Clays Sep 2014 Aug 2014 Jul 2014 June 2014 May 2014 Apr 2014 Mar 2014 Feb 2014 Jan 2014 Dec 2013 Nov 2013 Oct 2013 Sep 2013 Aug...

253

Relationship between the physical and mineralogical properties of two clays and their bloating characteristics  

E-Print Network [OSTI]

. Water Absorbtion of Clay at 22aC and 100 Percent Relative Humidity 3. Chemical Analysis Using Emission Spectrograph 4. Magnetic Properties of Clays and Aggregates 5. Carbon Analysis 6. Compositions of the Mixed Red Clay Samples 11 13 23 28... capacity of some clays. Successful attempts have 3 been made with lignin sulfite liquor and diesel fuel. ((hen the clay structure is destroyed, 11 large amounts of (OH) are released to react with the exchange ions in the clay. Therefore, the clay...

Abbott, Ute Agnes

1973-01-01T23:59:59.000Z

254

The probability of Mark-I containment failure by melt-attack of the liner  

SciTech Connect (OSTI)

This report is a followup to the work presented in NUREG/CR-5423 addressing early failure of a BWR Mark I containment by melt attack of the liner, and it constitutes a part of the implementation of the Risk-Oriented Accident Analysis Methodology (ROAAM) employed therein. In particular, it expands the quantification to include four independent evaluations carried out at Rensselaer Polytechnic Institute, Argonne National Laboratories, Sandia National Laboratories and ANATECH, Inc. on the various portions of the phenomenology involved. These independent evaluations are included here as Parts II through V. The results, and their integration in Part I, demonstrate the substantial synergism and convergence necessary to recognize that the issue has been resolved.

Theofanous, T.G.; Yan, H. [California Univ., Santa Barbara, CA (United States). Dept. of Chemical and Nuclear Engineering; Podowski, M.Z. [Rensselaer Polytechnic Inst., Troy, NY (United States). Dept. of Nuclear Engineering and Engineering Physics] [and others

1993-11-01T23:59:59.000Z

255

On the LINER nuclear obscuration, Compton-thickness and the existence of the dusty torus; Clues from Spitzer/IRS spectra  

E-Print Network [OSTI]

Most of the optically classified low ionisation narrow emission-line regions (LINERs) nuclei host an active galactic nuclei (AGN). However, how they fit into the unified model (UM) of AGN is still an open question. The aims of this work are to study at mid-infrared (mid-IR) (1) the Compton-thick nature of LINERs; and (2) the disappearance of the dusty torus in LINERs predicted from theoretical arguments. We have compiled all the available low spectral resolution mid-IR spectra of LINERs from the IRS/Spitzer (40 LINERs). We have complemented this sample with Spitzer/IRS spectra of PGQSOs, S1s, S2s, and SBs nuclei. We have studied the AGN versus the starburst content in our sample using different indicators: the EW(PAH 6.2um), the strength of the silicate feature at 9.7um, and the steepness of the mid-IR spectra. In 25 out of the 40 LINERs (i.e., 62.5%) the mid-IR spectra are not SB-dominated, similar to the comparison S2 sample (67.7%). The average spectra of both SB-dominated LINERs and S2s are very similar t...

Gonzalez-Martin, O; Marquez, I; Rodríguez-Espinosa, J M; Acosta-Pulido, J A; Ramos-Almeida, C; Dultzin, D; Hernandez-Garcia, L; Ruschel-Dutra, D; Alonso-Herrero, A

2015-01-01T23:59:59.000Z

256

Hollow clay tile wall program summary report  

SciTech Connect (OSTI)

Many of the Y-12 Plant buildings, constructed during the 1940s and 1950s, consist of steel ed concrete framing infilled with hollow clay tile (HCT). The infill was intended to provide for building enclosure and was not designed to have vertical or lateral load-carrying capacity. During the late 1970s and early 1980s, seismic and wind evaluations were performed on many of these buildings in conjunction with the preparation of a site-wide safety analysis report. This analytical work, based on the best available methodology, considered lateral load-carrying capacity of the HCT infill on the basis of building code allowable shear values. In parallel with the analysis effort, DOE initiated a program to develop natural phenomena capacity and performance criteria for existing buildings, but these criteria did not specify guidelines for determining the lateral force capacity of frames infilled with HCT. The evaluation of infills was, therefore, based on the provisions for the design of unreinforced masonry as outlined in standard masonry codes. When the results of the seismic and wind evaluations were compared with the new criteria, the projected building capacities fell short of the requirements. Apparently, if the buildings were to meet the new criteria, many millions of dollars would be required for building upgrades. Because the upgrade costs were significant, the assumptions and approaches used in the analyses were reevaluated. Four issues were identified: (1) Once the infilled walls cracked, what capacity (nonlinear response), if any, would the walls have to resist earthquake or wind loads applied in the plane of the infill (in-plane)? (2) Would the infilled walls remain within the steel or reinforced concrete framing when subjected to earthquake or high wind loads applied perpendicular to the infill (out-of-plane)? (3) What was the actual shear capacity of the HCT infill? (4) Was modeling the HCT infill as a shear wall the best approach?

Henderson, R.C.; Jones, W.D. [Gilbert/Commonwealth, Inc., Oak Ridge, TN (United States); Beavers, J.E. [MS Technology, Inc. (United States)

1995-07-30T23:59:59.000Z

257

Constitutive relationships for elastic deformation of clay rock: Data Analysis  

SciTech Connect (OSTI)

Geological repositories have been considered a feasible option worldwide for storing high-level nuclear waste. Clay rock is one of the rock types under consideration for such purposes, because of its favorable features to prevent radionuclide transport from the repository. Coupled hydromechanical processes have an important impact on the performance of a clay repository, and establishing constitutive relationships for modeling such processes are essential. In this study, we propose several constitutive relationships for elastic deformation in indurated clay rocks based on three recently developed concepts. First, when applying Hooke's law in clay rocks, true strain (rock volume change divided by the current rock volume), rather than engineering strain (rock volume change divided by unstressed rock volume), should be used, except when the degree of deformation is very small. In the latter case, the two strains will be practically identical. Second, because of its inherent heterogeneity, clay rock can be divided into two parts, a hard part and a soft part, with the hard part subject to a relatively small degree of deformation compared with the soft part. Third, for swelling rock like clay, effective stress needs to be generalized to include an additional term resulting from the swelling process. To evaluate our theoretical development, we analyze uniaxial test data for core samples of Opalinus clay and laboratory measurements of single fractures within macro-cracked Callovo-Oxfordian argillite samples subject to both confinement and water reduced swelling. The results from this evaluation indicate that our constitutive relationships can adequately represent the data and explain the related observations.

Liu, H.H.; Rutqvist, J.; Birkholzer, J.T.

2011-04-15T23:59:59.000Z

258

LITERATURE REVIEW ON THE SORPTION OF PLUTONIUM, URANIUM, NEPTUNIUM, AMERICIUM AND TECHNETIUM TO CORROSION PRODUCTS ON WASTE TANK LINERS  

SciTech Connect (OSTI)

The Savannah River Site (SRS) has conducted performance assessment (PA) calculations to determine the risk associated with closing liquid waste tanks. The PA estimates the risk associated with a number of scenarios, making various assumptions. Throughout all of these scenarios, it is assumed that the carbon-steel tank liners holding the liquid waste do not sorb the radionuclides. Tank liners have been shown to form corrosion products, such as Fe-oxyhydroxides (Wiersma and Subramanian 2002). Many corrosion products, including Fe-oxyhydroxides, at the high pH values of tank effluent, take on a very strong negative charge. Given that many radionuclides may have net positive charges, either as free ions or complexed species, it is expected that many radionuclides will sorb to corrosion products associated with tank liners. The objective of this report was to conduct a literature review to investigate whether Pu, U, Np, Am and Tc would sorb to corrosion products on tank liners after they were filled with reducing grout (cementitious material containing slag to promote reducing conditions). The approach was to evaluate radionuclides sorption literature with iron oxyhydroxide phases, such as hematite ({alpha}-Fe{sub 2}O{sub 3}), magnetite (Fe{sub 3}O{sub 4}), goethite ({alpha}-FeOOH) and ferrihydrite (Fe{sub 2}O{sub 3} {center_dot} 0.5H{sub 2}O). The primary interest was the sorption behavior under tank closure conditions where the tanks will be filled with reducing cementitious materials. Because there were no laboratory studies conducted using site specific experimental conditions, (e.g., high pH and HLW tank aqueous and solid phase chemical conditions), it was necessary to extend the literature review to lower pH studies and noncementitious conditions. Consequently, this report relied on existing lower pH trends, existing geochemical modeling, and experimental spectroscopic evidence conducted at lower pH levels. The scope did not include evaluating the appropriateness of K{sub d} values for the Fe-oxyhydroxides, but instead to evaluate whether it is a conservative assumption to exclude this sorption process of radionuclides onto tank liner corrosion products in the PA model. This may identify another source for PA conservatism since the modeling did not consider any sorption by the tank liner.

Li, D.; Kaplan, D.

2012-02-29T23:59:59.000Z

259

ANOMALOUS SILICATE DUST EMISSION IN THE TYPE 1 LINER NUCLEUS OF M81  

SciTech Connect (OSTI)

We report the detection and successful modeling of the unusual 9.7 {mu}m Si-O stretching silicate emission feature in the type 1 (i.e., face-on) LINER nucleus of M81. Using the Infrared Spectrograph (IRS) instrument on Spitzer, we determine the feature in the central 230 pc of M81 to be in strong emission, with a peak at {approx}10.5 {mu}m. This feature is strikingly different in character from the absorption feature of the galactic interstellar medium, and from the silicate absorption or weak emission features typical of galaxies with active star formation. We successfully model the high signal-to-noise ratio IRS spectra with porous silicate dust using laboratory-acquired mineral spectra. We find that the most probable fit uses micron-sized, porous grains of amorphous silicate and amorphous carbon. In addition to silicate dust, there is weak polycyclic aromatic hydrocarbon (PAH) emission present (particularly at 11.3 {mu}m, arising from the C-H out-of-plane bending vibration of relatively large PAHs of {approx}500-1000 C atoms) whose character reflects the low-excitation active galactic nucleus environment, with some evidence that small PAHs of {approx}100-200 C atoms (responsible for the 7.7 {mu}m C-C stretching band) in the immediate vicinity of the nucleus have been preferentially destroyed. Analysis of the infrared fine structure lines confirms the LINER character of the M81 nucleus. Four of the infrared H{sub 2} rotational lines are detected and fit to an excitation temperature of T {approx} 800 K. Spectral maps of the central 230 pc in the [Ne II] 12.8 {mu}m line, the H{sub 2} 17 {mu}m line, and the 11.3 {mu}m PAH C-H bending feature reveal arc- or spiral-like structures extending from the core. We also report on epochal photometric and spectroscopic observations of M81, whose nuclear intensity varies in time across the spectrum due to what is thought to be inefficient, sub-Eddington accretion onto its central black hole. We find that, contrary to the implications of earlier photometry, the nucleus has not varied over a period of two years at these infrared wavelengths to a precision of about 1%.

Smith, Howard A.; Ashby, M. L. N.; Fazio, G. G.; Huang, J.-S.; Marengo, M.; Wang, Z.; Willner, S.; Zezas, A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Li, Aigen; Li, M. P.; Koehler, M. [Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211 (United States); Spinoglio, L. [Istituto di Fisica dello Spazio Interplanetario, CNR, via Fosso del Cavaliere, 100, I-00133 Rome (Italy); Wu, Y. L., E-mail: hsmith@cfa.harvard.ed, E-mail: lia@missouri.ed [Spitzer Science Center, California Institute of Technology, Pasadena, CA 91101 (United States)

2010-06-10T23:59:59.000Z

260

Open apex shaped charge-type explosive device having special disc means with slide surface thereon to influence movement of open apex shaped charge liner during collapse of same during detonation  

DOE Patents [OSTI]

An open apex shape charge explosive device is disclosed having an inner liner defining a truncated cone, an explosive charge surrounding the truncated inner liner, a primer charge, and a disc located between the inner liner and the primer charge for directing the detonation of the primer charge around the end edge of the disc means to the explosive materials surrounding the inner liner. The disc comprises a material having one or more of: a higher compressive strength, a higher hardness, and/or a higher density than the material comprising the inner liner, thereby enabling the disc to resist deformation until the liner collapses. The disc has a slide surface thereon on which the end edge of the inner liner slides inwardly toward the vertical axis of the device during detonation of the main explosive surrounding the inner liner, to thereby facilitate the inward collapse of the inner liner. In a preferred embodiment, the geometry of the slide surface is adjusted to further control the collapse or [beta] angle of the inner liner. 12 figures.

Murphy, M.J.

1993-10-12T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Open apex shaped charge-type explosive device having special disc means with slide surface thereon to influence movement of open apex shaped charge liner during collapse of same during detonation  

DOE Patents [OSTI]

An open apex shape charge explosive device is disclosed having an inner liner defining a truncated cone, an explosive charge surrounding the truncated inner liner, a primer charge, and a disc located between the inner liner and the primer charge for directing the detonation of the primer charge around the end edge of the disc means to the explosive materials surrounding the inner liner. The disc comprises a material having one or more of: a higher compressive strength, a higher hardness, and/or a higher density than the material comprising the inner liner, thereby enabling the disc to resist deformation until the liner collapses. The disc has a slide surface thereon on which the end edge of the inner liner slides inwardly toward the vertical axis of the device during detonation of the main explosive surrounding the inner liner, to thereby facilitate the inward collapse of the inner liner. In a preferred embodiment, the geometry of the slide surface is adjusted to further control the collapse or .beta. angle of the inner liner.

Murphy, Michael J. (Livermore, CA)

1993-01-01T23:59:59.000Z

262

Potassium Fixation and Supply by Soils with Mixed Clay Minerals.  

E-Print Network [OSTI]

B-1090 December 1969 1 potassium Fixation and Supply By Soils With Misd Clay Minerals I KUS A&M UNIVERSITY Tcrv Agricultural Experiment Station r i 0. Kunkel, Acting Director, College Station, Texas Summary to the plants while Cameron clay... supplied onl!. Studies were made on three agriculturally important me/me of exchangeable K. The capacity of all a soils of South Texas and Northern Mexico to determine soils to fix K increased with increasing remo\\dl i their potassium (K)-supplying power...

Hipp, Billy W.

1969-01-01T23:59:59.000Z

263

Lateral load test of a drilled shaft in clay  

E-Print Network [OSTI]

LATERAL LOAD TEST OF A DRILLED SHAFT IN CLAY A Thesis by VERNON RAY KASCH Submitted to the Graduate College of Texas A8M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1977 Major Subject...: Civil Engineering LATERAL LOAD TEST OF A DRILLED SHAFT IN CLAY A Thesis by VERNON RAY KASCH Approved as to style and content by: Harry M. Coyle - Ch irman of Committee Charles H. Samson, Jr. Head of Department Wayne . Dunlap - Ne er Christop er C...

Kasch, Vernon R

1977-01-01T23:59:59.000Z

264

Multiscale micromechanical modeling of the thermal/mechanical properties of polymer/clay nanocomposites  

E-Print Network [OSTI]

Polymer/clay nanocomposites have been observed to exhibit enhanced thermal/mechanical properties at low weight fractions (We) of clay. Continuum-based composite modeling reveals that the enhanced properties are strongly ...

Sheng, Nuo, 1977-

2006-01-01T23:59:59.000Z

265

RIETVELD REFINEMENT OF REAL STRUCTURE PARAMETERS OF DISORDERED CLAY MINERALS IN  

E-Print Network [OSTI]

-conventional hydrocarbons in Germany) Germany's potential for shale oil and shale gas NIKO seal gas-rich shale shale: sedimentary rock which contains quartz, carbonates and clay minerals #12;clay minerals in shales quartz

Magee, Joseph W.

266

Kinetics of Swelling in Clay-Bearing Stones  

E-Print Network [OSTI]

neutrality #12;Invasion of Water Water invades between the sheets The water molecules surround the ions (like salt dissolving) Thus the sheets are pushed apart by the water #12;Brownstone Larger Quartz Grains Clay-wc #12;Reasons... The stone has a lack of homogeneity Each sample varies based upon what part

Petta, Jason

267

Occurrence and alteration of clay minerals in the Caribbean Sea  

E-Print Network [OSTI]

in these sedi- ments. The high angle x-ray diffraction peaks used for the deter- minations (Velde and Hower, 1963; Velde, 1965; Maxwell and Hower, 1967) have little or no intensity in complex clay mixtures. Halloysite 0 Broadening on the low angle side...

Johnson, Charles Michael

1973-01-01T23:59:59.000Z

268

Surface barriers: Problems, solutions, and future needs  

SciTech Connect (OSTI)

The problem of designing a surface barrier for a remediation project can be an enormously challenging task. There is a widely held misconception that surface barrier technology is well developed and works as expected. In fact, the technology is largely unproved and experimental, particularly in terms of long-term performance. The most difficult problem with surface barriers is to provide a long-term barrier to infiltration of water. The materials that have traditionally been considered for the hydraulic barrier within surface barrier systems are low-permeability compacted soil, geomembranes, and the geosynthetic clay liner (GCL). Data are presented to suggest that low-permeability compacted soil is often a poor choice of materials. Unless the compacted soil liner is buried under a very thick layer of protective soil or covered by a geomembrane, the low-permeability, clay-rich, compacted soil is likely to desiccate and lose its low hydraulic conductivity. Differential settlement of a compacted soil liner from uneven compression of underlying waste or other causes is almost certain to produce cracks within the soil liner. Geomembranes do not suffer as much from these problems, but their design life is, at best, a few centuries, The GCL, which contains a thin layer of bentonite, is much better able to resist damage from freezing/thawing, desiccation, and differential settlement than compacted soil liners. The technology of the GCL, which is particularly well suited for arid sites, is reviewed in some detail in this paper because of its technical attributes in surface-barrier applications. Published case histories of the performance of surface barriers are summarized.

Daniel, D.E. [Univ. of Texas, Austin, TX (United States). Dept. of Civil Engineering

1994-12-31T23:59:59.000Z

269

Mixed Waste Management Facility (MWMF) closure, Savannah River Plant: Clay cap test section construction report  

SciTech Connect (OSTI)

This report contains appendices 3 through 6 for the Clay Cap Test Section Construction Report for the Mixed Waste Management Facility (MWMF) closure at the Savannah River Plant. The Clay Cap Test Program was conducted to evaluate the source, lab. permeability, in-situ permeability, and compaction characteristics, representative of kaolin clays from the Aiken, South Carolina vicinity. (KJD)

Not Available

1988-02-26T23:59:59.000Z

270

Epoxy Nanocomposites with Highly Exfoliated Clay: Mechanical Properties and Fracture Mechanisms  

E-Print Network [OSTI]

Epoxy Nanocomposites with Highly Exfoliated Clay: Mechanical Properties and Fracture Mechanisms Ke; Revised Manuscript Received November 9, 2004 ABSTRACT: Epoxy/clay nanocomposites with a better exfoliated and transmission electron microscopy (TEM). It was found that clay was highly exfoliated and uniformly dispersed

George, Steven C.

271

Andrew Cotton-Clay Massachusetts Institute of Technology E-mail: acotton@math.berkeley.edu  

E-Print Network [OSTI]

Andrew Cotton-Clay Massachusetts Institute of Technology E-mail: acotton: Gromov's Nonsqueezing Theorem · Advisor: Peter Kronheimer Publications · A. Cotton-Clay. A sharp bound on fixed points of area-preserving surface diffeo- morphisms. In preparation. · A. Cotton-Clay. Symplectic

Cotton-Clay, Andrew

272

Suction effects in deep Boom clay block samples Pierre DELAGE 1  

E-Print Network [OSTI]

located at Mol (Belgium) called Boom clay, in the context of research into deep nuclear waste disposal, a stiff clay from Belgium, in the context of research into deep nuclear waste disposal (SAFIR 2, 2001 of the block sample used. Keywords: Clays, Laboratory tests, Radioactive waste disposal, Sampling, Suction. hal

Boyer, Edmond

273

Effect of swell pressure on GCL cover stability  

SciTech Connect (OSTI)

This paper describes the importance of bentonite swell pressure on the stability of cover systems that incorporate a geosynthetic clay liner (GCL). The results of a one-dimensional swell test indicate that the field swell pressure of a needle-punched GCL ranges from 35 to 40 kPa. An effective normal stress at or near this swell pressure may be required to maximize the contact area between the GCL and geomembrane and increase the static and seismic stability of a GCL cover. Since an effective normal stress of 35 to 40 kPa is probably not practical and a soil cover is usually not immediately placed, it is recommended that free swell conditions be assumed for GCL shear testing and the slope be designed using the resulting shear strength parameters. Suggestions for modifying existing products to increase GCL cover stability are also presented.

Stark, T.D. [Univ. of Illinois, Urbana, IL (United States)

1997-11-01T23:59:59.000Z

274

Effect of normal stress during hydration and shear on the shear strength of GCL/textured geomembrane interfaces  

SciTech Connect (OSTI)

A laboratory testing program was performed to evaluate the interface shear strength of a geosynthetic clay liner (GCL)/textured geomembrane interface utilizing two pre-shear inundation methods designed to simulate field conditions. Two commercially-available products were tested, a needlepunched and a stitch-bonded GCL. Oedometer swell tests provided swell data for the two products which were used to design the interface shear testing program. Interface shear tests were performed for (1) GCL samples inundated under a low normal stress for a short time and sheared under a higher normal stress, and (2) GCL samples inundated for a longer period under the design normal stress. The results for the two different GCL materials and the two preshear inundation conditions are compared.

Hewitt, R.D.; Soydemir, C. [Haley and Aldrich, Inc., Cambridge, MA (United States); Stulgis, R.P. [Haley and Aldrich, Inc., Manchester, NH (United States); Coombs, M.T. [Tufts Univ., Medford, MA (United States)

1997-11-01T23:59:59.000Z

275

Laboratory testing of closure cap repair techniques  

SciTech Connect (OSTI)

Landfill design requires a low permeability closure cap as well as a low permeability liner. The Savannah River Site, in South Carolina, has approximately 85 acres of mixed waste landfills covered with compacted kaolin clay. Maintaining low permeability of the clay cap requires both that the permeability of the compacted clay itself remain low and that the integrity of the barrier be maintained. Barrier breaches typically result from penetration by roots or animals, and especially cracks caused by uneven settling or desiccation. In this study, clay layers, 0.81 m in diameter and 7.6 cm thick, were compacted in 7 lysimeters to simulate closure caps. The hydraulic conductivity of each layer was measured, and the compacted clay layers (CCL`s) were cracked by drying. Then various repair techniques were applied and the effectiveness of each repair was assessed by remeasuring the hydraulic conductivity. Finally the repaired CCL was again dried and measured to determine how the repair responded to the conditions that caused the original failure. For a full report of this investigation see Persoff et al. Six repair techniques have been tested, four of which involve the use of injectable barrier liquids colloidal silica (CS) and polysiloxane (PSX) described below: (I) covering the crack with a bentonite geosynthetic clay liner (GCL), (ii) recompaction of new kaolinite at STD+3 moisture content joined to existing kaolinite that had dried and shrunk, (iii) direct injection of colloidal silica to a crack, (iv) injection of colloidal silica (CS) to wells in an overlying sand layer, (v) direct injection of polysiloxane to a crack, and (vi), injection of polysiloxane (PSX) to wells in an overlying soil layer.

Persoff, P.; Moridis, G. [Lawrence Berkeley National Lab., CA (United States); Tuck, D.M. [Westinghouse Savannah River Company, Aiken, SC (United States)] [and others

1996-10-01T23:59:59.000Z

276

Device and method for relativistic electron beam heating of a high-density plasma to drive fast liners  

DOE Patents [OSTI]

A device and method for relativistic electron beam heating of a high-density plasma in a small localized region. A relativistic electron beam generator or accelerator produces a high-voltage electron beam which propagates along a vacuum drift tube and is modulated to initiate electron bunching within the beam. The beam is then directed through a low-density gas chamber which provides isolation between the vacuum modulator and the relativistic electron beam target. The relativistic beam is then applied to a high-density target plasma which typically comprises DT, DD, hydrogen boron or similar thermonuclear gas at a density of 10.sup.17 to 10.sup.20 electrons per cubic centimeter. The target gas is ionized prior to application of the electron beam by means of a laser or other preionization source to form a plasma. Utilizing a relativistic electron beam with an individual particle energy exceeding 3 MeV, classical scattering by relativistic electrons passing through isolation foils is negligible. As a result, relativistic streaming instabilities are initiated within the high-density target plasma causing the relativistic electron beam to efficiently deposit its energy and momentum into a small localized region of the high-density plasma target. Fast liners disposed in the high-density target plasma are explosively or ablatively driven to implosion by a heated annular plasma surrounding the fast liner which is generated by an annular relativistic electron beam. An azimuthal magnetic field produced by axial current flow in the annular plasma, causes the energy in the heated annular plasma to converge on the fast liner.

Thode, Lester E. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

277

Epoxy-borax-coal tar composition for a radiation protective, burn resistant drum liner and centrifugal casting method  

DOE Patents [OSTI]

A boron containing burn resistant, low level radiation protection material useful, for example, as a liner for radioactive waste disposal and storage, a component for neutron absorber, and a shield for a neutron source. The material is basically composed of Borax in the range of 25-50%, coal tar in the range of 25-37.5%, with the remainder being an epoxy resin mix. A preferred composition is 50% Borax, 25% coal tar and 25% epoxy resin. The material is not susceptible to burning and is about 1/5 the cost of existing radiation protection material utilized in similar applications.

Taylor, Robert S. (Livermore, CA); Boyer, Norman W. (Livermore, CA)

1980-01-01T23:59:59.000Z

278

Sgr A$^*$ and Company Multiwavelength observations of Sgr A$^*$ and VLA search of "Sgr A$^{*'}$s" in LINERs  

E-Print Network [OSTI]

We report first results from a multiwavelength campaign to measure the simultaneous spectrum of Sgr A* from cm to mm wavelengths. The observations confirm that the previously detected submm-excess is not due to variability; the presence of an ultracompact component with a size of a few Schwarzschild radii is inferred. In a VLA survey of LINER galaxies, we found Sgr A*-like nuclei in one quarter of the galaxies searched, suggesting a link between those low-power AGN and the Galactic Center.

Falcke, H; Ho, L C; Matsuo, H; Teuben, P J; Wilson, A S; Zhao, J H; Zylka, R; Falcke, Heino

1997-01-01T23:59:59.000Z

279

Sgr A* and Company - Multiwavelength observations of Sgr A* and VLA search of ``Sgr A*'s'' in LINERs  

E-Print Network [OSTI]

We report first results from a multiwavelength campaign to measure the simultaneous spectrum of Sgr A* from cm to mm wavelengths. The observations confirm that the previously detected submm-excess is not due to variability; the presence of an ultracompact component with a size of a few Schwarzschild radii is inferred. In a VLA survey of LINER galaxies, we found Sgr A*-like nuclei in one quarter of the galaxies searched, suggesting a link between those low-power AGN and the Galactic Center.

Heino Falcke; W. M. Goss; L. C. Ho; H. Matsuo; P. Teuben; A. S. Wilson; J. -H. Zhao; R. Zylka

1997-06-24T23:59:59.000Z

280

Deep ocean clay crusts: behaviour and biological origin  

E-Print Network [OSTI]

Deep ocean clay crusts: behaviour and biological origin Matthew Yih-Han Kuo King’s College University of Cambridge A dissertation submitted for the degree of Doctor of Philosophy February 2011 To Kirsty, Mum, Dad and Ivana “. . . observe the small... , the deep Pacific and the Peru Margin. . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.1 Water content and liquid limit measurements taken from box and STACOR core samples confirming measurements by Fugro (also shown). . . . . . . . . . . 23 3...

Kuo, Matthew Yih-Han

2011-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Diagenesis of clay minerals from early Eocene shales of Texas  

E-Print Network [OSTI]

de Segonzac, 1979; Foscolos and Kodama, 1. 974; Hower et. al. , 1976; Perry and Hower, 1970; Weaver and Beck, 1971) noted an increase in illite layers with a concommitant decrease in smectite layers and randomness of interstratification in mixed... is reached. This phase seems to be thermo- dynamically stable to temperatures of at least 163'C (Foscolos and Kodama, 1974; Perry and Hower, 1970). Mixed-layer clays may also be converted to chlorite with increas- ing depth of burial (Dunoyer de Segonzac...

Whynot, John David

1983-01-01T23:59:59.000Z

282

Clay Central Everly School Dist Wind Farm | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarreisVolcanic NationalElectric)Clarion-Goldfield SchoolClay

283

Clay-Union Electric Coop | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarreisVolcanic NationalElectric)Clarion-GoldfieldClay-Union

284

Photocatalytic properties of titania pillared clays by different drying methods  

SciTech Connect (OSTI)

Photocatalysts based on titania pillared clays (TiO{sub 2} PILCs) have been prepared through a sol-gel method. Different drying methods, air drying (AD), air drying after ethanol extraction (EAD), and supercritical drying (SCD) have been employed and found to have significant effects on the photocatalytic efficiency of the resultant catalysts for the oxidation of phenol in water. Titania pillared clay (TiO{sub 2} PILC) obtained by SCD has the highest external and micropore surface area, largest amount and smallest crystallite size of anatase, and exhibited the highest photocatalytic activity. Furthermore, silica titania pillared clay (SiO{sub 2}-TiO{sub 2} PILC) after SCD, titania coated TiO{sub 2} PILC (SCD) and SiO{sub 2}-TiO{sub 2} PILC (SCD) were synthesized to study the key factors controlling the photocatalytic activity. It is concluded that the dispersion of nanometer-sized anatase on the surface of the PILC particles and the suspensibility of the particles are the most important factors for high photocatalytic efficiency.

Ding, Z.; Zhu, H.Y.; Lu, G.Q.; Greenfield, P.F. [Univ. of Queensland, Brisbane, Queensland (Australia). Dept. of Chemical Engineering] [Univ. of Queensland, Brisbane, Queensland (Australia). Dept. of Chemical Engineering

1999-01-01T23:59:59.000Z

285

The occurrence of clays and their bearing on evaporite mineralogy in the Salado Formation, Delaware Basin, New Mexico  

E-Print Network [OSTI]

, potassium, and magnesium K-alpha linescans from sample in SEM photograph (thin 'line). The dark area corresponding to the high silicon area is clay. The mineral to the left of the clay is langbefnite, and to the right of the clay is halite. . . . Thin.... Thin sections were made from samples in intervals include potash minerals in clay-rich areas, potash minerals in clay-free areas, clay occurrences in halite/poIyhalite areas, and clay-free occurrences of halite and polyhalite. These thin sections...

Harville, Donald Gene

1985-01-01T23:59:59.000Z

286

The Don-Kay-Clay Cash Foundation The Don-Kay-Clay Cash Foundation was established in 1997 to provide general and operating  

E-Print Network [OSTI]

The Don-Kay-Clay Cash Foundation The Don-Kay-Clay Cash Foundation was established in 1997. He is currently a cattle rancher and President of the family foundation. In the past, he held other, and the Texas Tech University Foundation. Kay received her degree in Education from Texas Tech in 1967

Rock, Chris

287

DEVELOPMENT OF ASME SECTION X CODE RULES FOR HIGH PRESSURE COMPOSITE HYDROGEN PRESSURE VESSELS WITH NON-LOAD SHARING LINERS  

SciTech Connect (OSTI)

The Boiler and Pressure Vessel Project Team on Hydrogen Tanks was formed in 2004 to develop Code rules to address the various needs that had been identified for the design and construction of up to 15000 psi hydrogen storage vessel. One of these needs was the development of Code rules for high pressure composite vessels with non-load sharing liners for stationary applications. In 2009, ASME approved new Appendix 8, for Section X Code which contains the rules for these vessels. These vessels are designated as Class III vessels with design pressure ranging from 20.7 MPa (3,000 ps)i to 103.4 MPa (15,000 psi) and maximum allowable outside liner diameter of 2.54 m (100 inches). The maximum design life of these vessels is limited to 20 years. Design, fabrication, and examination requirements have been specified, included Acoustic Emission testing at time of manufacture. The Code rules include the design qualification testing of prototype vessels. Qualification includes proof, expansion, burst, cyclic fatigue, creep, flaw, permeability, torque, penetration, and environmental testing.

Rawls, G.; Newhouse, N.; Rana, M.; Shelley, B.; Gorman, M.

2010-04-13T23:59:59.000Z

288

Evaluation of Used Fuel Disposition in Clay-Bearing Rock  

SciTech Connect (OSTI)

Radioactive waste disposal in shale/argillite rock formations has been widely considered given its desirable isolation properties (low permeability), geochemically reduced conditions, anomalous groundwater pressures, and widespread geologic occurrence. Clay/shale rock formations are characterized by their high content of clay minerals such as smectites and illites where diffusive transport and chemisorption phenomena predominate. These, in addition to low permeability, are key attributes of shale to impede radionuclide mobility. Shale host-media has been comprehensively studied in international nuclear waste repository programs as part of underground research laboratories (URLs) programs in Switzerland, France, Belgium, and Japan. These investigations, in some cases a decade or more long, have produced a large but fundamental body of information spanning from site characterization data (geological, hydrogeological, geochemical, geomechanical) to controlled experiments on the engineered barrier system (EBS) (barrier clay and seals materials). Evaluation of nuclear waste disposal in shale formations in the USA was conducted in the late 70’s and mid 80’s. Most of these studies evaluated the potential for shale to host a nuclear waste repository but not at the programmatic level of URLs in international repository programs. This report covers various R&D work and capabilities relevant to disposal of heat-generating nuclear waste in shale/argillite media. Integration and cross-fertilization of these capabilities will be utilized in the development and implementation of the shale/argillite reference case planned for FY15. Disposal R&D activities under the UFDC in the past few years have produced state-of-the-art modeling capabilities for coupled Thermal-Hydrological-Mechanical-Chemical (THMC), used fuel degradation (source term), and thermodynamic modeling and database development to evaluate generic disposal concepts. The THMC models have been developed for shale repository leveraging in large part on the information garnered in URLs and laboratory data to test and demonstrate model prediction capability and to accurately represent behavior of the EBS and the natural (barrier) system (NS). In addition, experimental work to improve our understanding of clay barrier interactions and TM couplings at high temperatures are key to evaluate thermal effects as a result of relatively high heat loads from waste and the extent of sacrificial zones in the EBS. To assess the latter, experiments and modeling approaches have provided important information on the stability and fate of barrier materials under high heat loads. This information is central to the assessment of thermal limits and the implementation of the reference case when constraining EBS properties and the repository layout (e.g., waste package and drift spacing). This report is comprised of various parts, each one describing various R&D activities applicable to shale/argillite media. For example, progress made on modeling and experimental approaches to analyze physical and chemical interactions affecting clay in the EBS, NS, and used nuclear fuel (source term) in support of R&D objectives. It also describes the development of a reference case for shale/argillite media. The accomplishments of these activities are summarized as follows: ? Development of a reference case for shale/argillite; ? Investigation of Reactive Transport and Coupled THM Processes in EBS: FY14; ? Update on Experimental Activities on Buffer/Backfill Interactions at elevated Pressure and Temperature; ? Thermodynamic Database Development: Evaluation Strategy, Modeling Tools, First-Principles Modeling of Clay, and Sorption Database Assessment; ? ANL Mixed Potential Model For Used Fuel Degradation: Application to Argillite and Crystalline Rock Environments.

Carlos F. Jové Colón; Philippe F. Weck; David H. Sassani; Liange Zheng; Jonny Rutqvist; Carl I. Steefel; Kunhwi Kim; Seiji Nakagawa; James Houseworth; Jens Birkholzer; Florie A. Caporuscio; Michael Cheshire; Michael S. Rearick; Mary K. McCarney; Mavrik Zavarin; Ana Benedicto; Annie B. Kersting; Mark Sutton; James Jerden; Kurt E. Frey; Jacqueline M. Copple; William Ebert

2014-08-29T23:59:59.000Z

289

Low Density Materials through Freeze-Drying:Clay Aerogels and Beyond….  

E-Print Network [OSTI]

??Clay aerogels and other ice templated materials belong to a family of materials with properties similar to those of conventionally foamed polymers including low density,… (more)

Gawryla, Matthew Daniel

2009-01-01T23:59:59.000Z

290

Coupled hydro-mechanical processes in crytalline rock and in induratedand plastic clays: A comparative discussion  

E-Print Network [OSTI]

Term HM Measurements around HADES URF, Proceedings of EUROCKThe extension of the HADES Underground Research facility atin a plastic clay formation: The HADES underground research

Tsang, Chin-Fu; Blumling, Peter; Bernier, Frederic

2008-01-01T23:59:59.000Z

291

Arrested state of clay-water suspensions: gel or glass?  

E-Print Network [OSTI]

The aging of a charged colloidal system has been studied by Small Angle X-rays Scattering, in the exchanged momentum range Q=0.03 - 5 nm-1, and by Dynamic Light Scattering, at different clay concentrations (Cw =0.6 % - 2.8 %). The static structure factor, S(Q), has been determined as a function of both aging time and concentration. This is the first direct experimental evidence of the existence and evolution with aging time of two different arrested states in a single system simply obtained only by changing its volume fraction: an inhomogeneous state is reached at low concentrations, while a homogenous one is found at high concentrations.

B. Ruzicka; L. Zulian; R. Angelini; M. Sztucki; A. Moussaid; G. Ruocco

2008-01-24T23:59:59.000Z

292

Model of crack propagation in a clay soil  

E-Print Network [OSTI]

of independent variables for maximum R to determine A for crack de th, 2 Number of variables in model (p) R Variables in model 0. 703913 0. 916176 0. 988151 0. 997207 0. 999328 H*CLrH*M~CL H, H*M, H~M*CL H, CL, H*M, H*M*CL H, CL, H"M, H*CL, H...: Agricultural Engineering MODEL OF CRACK PROPAGATION IN A CLAY SOIL A Thesis by PATRICK EDWIDGE CARRIERE Approved as to style and content by: John L. Nieber (Chairman of Committee) Donald L. Reddell (Member) Kirk W, Brown (Member ) Wilbert H...

Carriere, Patrick Edwidge

2012-06-07T23:59:59.000Z

293

Influence of loading rate on axially loaded piles in clay  

E-Print Network [OSTI]

. Coyle (Member) ave u ofs (Member) . Hsrsc (Head of Department) May 1984 ABSTRACT Influence of Loading Rate on Axially Loaded Piles in Clay. (May 1984) Enrique Eduardo Garland Ponce, B. S. , Texas A8M University Chairman of Committee: Dr. Jean... and support during all phases of this study. The author also wishes to acknowledge Drs. Harry M. Coyle and David Dubofski who served as members of the advisory committee. Special notes of gratitude to Dr . Wayne A. Dunlap for his aid in the design...

Garland Ponce, Enrique Eduardo

1984-01-01T23:59:59.000Z

294

Chemical, mineralogical and physical properties of the San Saba Clay  

E-Print Network [OSTI]

? San Saba an4 Victoria Clay s 1 ST SOS UCT I OS Ssseawh 4oslgsed to stagy ihe basks pwperikes of ihe sells of ihe Oread Prakrle ef oeniral Tense ls generally Laehkng Consegaontly, there ls lktile soil data aeaklablo fer reselvkng ~ageaesi as4 fer..., Slash are deeply appreelaisd, Maap ihashs also are das io Xa ~ Earrep Qehos~ Senior Corrolaior~ Sell Cessor@a ilos Serrfoo~ sho located ihe ssapllsS elise asd also edNed iho profile de earl pilose. TABLE (~ QOSTXSTS ISTBDDUGTIES Li TXS4TUDZ BKV IX...

Nelson, Larry Alan

1958-01-01T23:59:59.000Z

295

Clay County, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin:EnergyWisconsin: Energy Resources Jump to:Clawson, Michigan: Energy27.Clay

296

Field Performance of Three Compacted Clay Landfill Covers  

SciTech Connect (OSTI)

A study was conducted at sites in subtropical Georgia, seasonal and humid Iowa, and arid southeastern California to evaluate the field hydrology of compacted clay covers for final closure of landfills.Water balance of the covers was monitored with large (10 by 20 m), instrumented drainage lysimeters for 2 to 4 yr. Initial drainage at the Iowa and California sites was ,32 mm yr21 (i.e., unit gradient flow for a hydraulic conductivity of 1027 cm s21, the regulatory standard for the clay barriers in this study); initial drainage rate at the Georgia site was about 80 mm yr21. The drainage rate at all sites increased by factors ranging from 100 to 750 during the monitoring periods and in each case the drainage rate exceeded 32 mm yr21 by the end of the monitoring period. The drainage rates developed a rapid response to precipitation events, suggesting that increases in drainage rate were the result of preferential flow. Although no direct observations of preferential flow paths were made, field measurements of water content and temperature at all three sites suggested that desiccation or freeze–thaw cycling probably resulted in formation of preferential flow paths through the barrier layers. Data from all three sites showed the effectiveness of all three covers as hydraulic barriers diminished during the 2 to 4 yr monitoring period, which was short compared with the required design life (often 30 yr) of most waste containment facilities.

Albright, William H.; Benson, Craig H.; Gee, Glendon W.; Abichou, Tarek; Tyler, Scott W.; Rock, Steven

2006-11-01T23:59:59.000Z

297

Dechlorination of Pentachlorophenol by ammonium amended clays: development of field applicable techniques  

E-Print Network [OSTI]

P, CqP, CtP. 14 CB JECTIVE The objective of this research was to develop a field pracfical method to use ammoniated clays for dechlorination of PCP. To do this, techniques need to be developed to process the anunonium-treated clay into water stable...

Lu, Junying

1997-01-01T23:59:59.000Z

298

Change in the hydraulic properties of a Brazilian clay Ferralsol on clearing for pasture  

E-Print Network [OSTI]

Change in the hydraulic properties of a Brazilian clay Ferralsol on clearing for pasture L. C 80 to 300 m in size. The aim of this study was to analyze how the hydraulic properties of a clay retention properties were determined by using pressure cell equipment. We determined the saturated hydraulic

Boyer, Edmond

299

Fibrous-clay mineral formation and soil evolution in Aridisols of northeastern Patagonia, Argentina  

E-Print Network [OSTI]

Fibrous-clay mineral formation and soil evolution in Aridisols of northeastern Patagonia, Argentina Patagónico, CONICET, Avd. Brown s/n, 9120, Puerto Madryn, Chubut, Argentina b Departamento de Edafología, EPS horizons; Chubut province of Argentina 1. Introduction Palygorskite and sepiolite are clay minerals

Ahmad, Sajjad

300

Evacuated Panels Utilizing Clay-Polymer Aerogel Composites for Improved Housing Insulation  

E-Print Network [OSTI]

Evacuated Panels Utilizing Clay-Polymer Aerogel Composites for Improved Housing Insulation March 17 encompasses a newly developed clay-polymer aerogel composite material (developed and patented by Dr. David Aerogel ~22 > 2,500 Silica Aerogel Blanket 10 1,800 (Aspen Aerogel) Silica Aerogel / PP Evacuated Panel 50

Rollins, Andrew M.

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Probing the Interface of Microscopic Clay Particles in Aqueous Solution by Second Harmonic Generation  

E-Print Network [OSTI]

of catechol (OHC6H4- OH), adsorbed onto the surface of titanium dioxide micropar- ticles in aqueous solution adsorption and the electrostatic properties of clay particles. 1. Introduction The abundance in nature and the unique adsorptive and catalytic properties of clay particles make them a subject of fundamental

Eisenthal, Kenneth B.

302

Study on the hydraulic conductivity of Boom clay1 Yong-Feng Deng1, 2  

E-Print Network [OSTI]

, Transportation College,5 Nanjing, China6 2 Ecole des Ponts ParisTech, Navier/CERMES, Marne-la-Vallée, France7 3 Introduction1 Boom clay is a thick deposit of over-consolidated marine clay, of Oligocene age. It can be2 found for its performance assessment for the deep geological disposal of4 high-level radioactive waste. Recently

Boyer, Edmond

303

Derivation, Parameterization and Validation of a Sandy-Clay Material Model for Use  

E-Print Network [OSTI]

for sand-based soils with different saturation levels and clay and gravel contents was recently proposed and validated in our study, and the same has been extended in this study to include clay-based soils with landmine detonation and interaction between detonation products, mine fragments, and soil ejecta

Grujicic, Mica

304

E-Print Network 3.0 - artificial fly ash-clay Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

fly ash-clay Page: << < 1 2 3 4 5 > >> 1 Study of composite cement containing burned oil shale Summary: studied. Context SiO2 CaO Al2O3 OPC BFS Class C fly ash Clays Metakaolin...

305

Lanthanides-clay nanocomposites: Synthesis, characterization and optical properties  

SciTech Connect (OSTI)

Complexes of Europium(III) and Terbium(III) with 2,2-bipyridine and 1,10-phenanthroline were inserted into Na-bentonite by ion exchange reactions at room temperature. The products display interlaminar distances and stoichiometries in agreement with the ion exchange capacity and the interlayer space available in the clay. The optical properties of the intercalates, being qualitatively similar to those of the free complexes, are additionally improved with respect to exchange processes with the medium, especially in a moist environment. The protection again hydrolysis, together with the intensity of the optical transition {sup 5}D{sub 0}-{sup 5}F{sub 2} observed in the nanocomposite, makes these products promising for the development of novel optical materials.

Celedon, Salvador; Quiroz, Carolina [Universidad Tecnologica Metropolitana, Department of Chemistry, P.O. Box 9845, Santiago (Chile); Gonzalez, Guillermo [Universidad de Chile, Faculty of Science, Department of Chemistry, P.O. Box 653, Santiago (Chile); Sotomayor Torres, Clivia M. [University College Cork, Tyndall National Institute, Lee Maltings, Cork (Ireland); Catalan Institute of Nanotechnology, Campus de Bellaterra, Edifici CM3, ES 08193, Institute of Research and Advanced Studies ICREA, 08010 Barcelona (Spain); Benavente, Eglantina [Universidad Tecnologica Metropolitana, Department of Chemistry, P.O. Box 9845, Santiago (Chile)], E-mail: ebenaven@utem.cl

2009-05-06T23:59:59.000Z

306

6.8 Cylinder Liner Boring Case Study Demonstrating the Process of SPC The following case study demonstrates the application of X and R control charts to the study of  

E-Print Network [OSTI]

6.8 Cylinder Liner Boring Case Study ­ Demonstrating the Process of SPC The following case study the complete process of SPC to bring a process into a state of statistical control. The Situation As part

Di Bucchianico, Alessandro

307

Effect of aging of the pillaring reagent on the microstructure and cracking activity of pillared clay  

SciTech Connect (OSTI)

Pillared interlayer clay (PILC) is formed by exchanging large hydroxyaluminum polycations into the interlayer of a smectite clay such as montmorillonite, which is made up of sheet-like silica/alumina layers. Calcination of the exchanged clay gives a well dispersed array of metal oxide clumps (i.e., pillars) bonded top and bottom to the silica/alumina layers of the clay. The permanent separation of the clay layers gives an 8 to 10-fold increase in surface area, from 30 to 250-300 m{sup 2}/g, and a microporous structure similar to but less constrained than that of zeolites. Recently, there has been an increased interest in the use of these clays as cracking catalysts. For example, pillared clays have been shown to be an active cracking catalyst for both single component and gas oil feeds. PILC's also lead to both higher light cycle oil (LCO) and coke yields than conventional cracking catalysts. Commercially available, metal-hydrolyzed hydroxyaluminum solutions containing chlorhydrol, A1{sub 2}(OH){sub 5}C1.2H{sub 2}O, have been used as one source of the polycation solution. The approach of these hydrolyzed polycation solutions to equilibrium is known as aging. During the aging process certain polycationic species disappear from the solution and new species are formed. For this reason, the aging process can have a significant influence on the properties of the pillared clays. The objective of this work was to determine how the physical and catalytic properties of the pillared clay depend on the aging of dilute cholorhydrol solutions.

Harris, J.R. (Phillips Petroleum Company, Bartlesville, OK (USA))

1987-08-01T23:59:59.000Z

308

Rotating Liner Engine: Improving Efficiency of Heavy Duty Diesels by Significant Friction Reduction, and Extending the Life of Heavy Duty Engines.  

SciTech Connect (OSTI)

This report describes the work on converting a 4 cylinder Cummins ISB engine into a single cylinder Rotating Liner Engine functioning prototype that can be used to measure the friction benefits of rotating the cylinder liner in a high pressure compression ignition engine. A similar baseline engine was also prepared, and preliminary testing was done. Even though the fabrication of the single cylinder prototype was behind schedule due to machine shop delays, the fundamental soundness of the design elements are proven, and the engine has successfully functioned. However, the testing approach of the two engines, as envisioned by the original proposal, proved impossible due to torsional vibration resonance caused by the single active piston. A new approach for proper testing has been proposed,

Dardalis, Dimitrios

2013-12-31T23:59:59.000Z

309

MATE (Materials for Advanced Turbine Engines) Program, Project 3. Volume 2: Design, fabrication and evaluation of an oxide dispersion strengthened sheet alloy combustor liner. Final report  

SciTech Connect (OSTI)

The suitability of wrought oxide dispersion strengthened (ODS) superalloy sheet for gas turbine engine combustor applications was evaluated. Two yttria (Y2O3) dispersion strengthened alloys were evaluated; Incoloy MA956 and Haynes Development Alloy (HDA) 8077 (NiCrAl base). Preliminary tests showed both alloys to be potentially viable combustor materials, with neither alloy exhibiting a significant advantage over the other. MA956 was selected as the final alloy based on manufacturing reproducibility for evaluation as a burner liner. A hybrid PW2037 inner burner liner containing MA956 and Hastelloy X components and using a louvered configuration was designed and constructed. The louvered configuration was chosen because of field experience and compatibility with the bill of material PW2037 design. The simulated flight cycle for the ground based engine tests consisted of 4.5 min idle, 1.5 min takeoff and intermediate conditions in a PW2037 engine with average uncorrected combustor exit temperature of 1527 C. Post test evaluation consisting of visual observations and fluorescent penetrant inspections was conducted after 500 cycles of testing. No loss of integrity in the burner liner was shown.

Bose, S.; Sheffler, K.D.

1988-02-01T23:59:59.000Z

310

The effects of sample disturbance on preconsolidation pressure for normally consolidated and overconsolidated clays  

E-Print Network [OSTI]

Sample disturbance has always been a particularly challenging topic in Geotechnical Engineering exercise. The effect and importance of disturbance on stress-strain history and undrained shear strength of soft clays are ...

Kontopoulos, Nikolaos S. (Nikolaos Stefanos)

2012-01-01T23:59:59.000Z

311

K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles...  

Open Energy Info (EERE)

zone. Six illitic clays within Quaternary caldera-fill debris flow, tuffaceous sediment, and ash-flow tuff (48 to 587 m depth) yield ages from 0.35 to 1.09 Ma. Illite from...

312

Behavior of 10 full-scale ground anchors installed in stiff clay  

E-Print Network [OSTI]

Results from load tests conducted on ten, full-scale instrumented ground anchors installed in stiff clay, illustrated that anchor performance is load-history dependent. Anchors having shorter bonded lengths performed significantly better than...

Powers, William Francis

1993-01-01T23:59:59.000Z

313

Investigating the Use of Chelating Agents for Clay Dissolution and Sandstone Acidizing Purposes  

E-Print Network [OSTI]

Mud acid, a mixture of HCl and HF, has been frequently used for stimulating sandstone reservoirs. However, using HCl in such environments can be problematic, especially at higher temperatures. Some of the most common problems are the following: clay...

Andotra, Gautam

2014-08-06T23:59:59.000Z

314

Effects of tunneling on groundwater flow and swelling of clay-sulfate rocks  

E-Print Network [OSTI]

[1] Swelling of clay-sulfate rocks is a major threat in tunneling. It is triggered by the transformation of the sulfate mineral anhydrite into gypsum as a result of water inflow in anhydrite-containing layers after tunnel ...

Butscher, Christoph

315

Detection and Quantification of Expansive Clay Minerals in Geologically-Diverse Texas Aggregate Fines  

E-Print Network [OSTI]

and asphalt concretes. The Texas Department of Transportation (TXDOT) and Texas A&M Transportation Institute (TTI) evaluated the methylene blue adsorption test for its potential to identify and estimate quantities of expansive clays in aggregate stockpiles...

Russell, George 1983-

2012-11-28T23:59:59.000Z

316

A comparison of the behavior of intact and Resedimented Boston Blue Clay (BBC)  

E-Print Network [OSTI]

Resedimented Boston Blue Clay (RBBC) has been used as an analog test material for research at MIT for decades, due to local variability and the high cost of sampling. However, a comprehensive study of the differences in ...

House, Robert Donald

2012-01-01T23:59:59.000Z

317

Engineering properties of Resedimented Ugnu Clay from the Alaskan North Slope  

E-Print Network [OSTI]

This research determined the engineering properties of laboratory Resedimented Ugnu Clay (RUC) specimens created using recovered material from 3800 ft below the surface of the Alaskan Northern Slope to aid with future ...

Jones, Cullen A. (Cullen Albert)

2010-01-01T23:59:59.000Z

318

Clay Electric Cooperative, Inc- Energy Smart Solar Water Heater Rebate Program  

Broader source: Energy.gov [DOE]

Clay Electric Cooperative (CEC) provides a rebate of $0.01 per BTU output to its residential members when they purchase qualified solar water heaters. This rebate is capped at 60,000 BTUs per...

319

Hydroconversion reactions catalyzed by highly stable pillared clays  

SciTech Connect (OSTI)

Al-pillared clays (Al-PILC) and Al-X-PILC (X = Ga, Ni), structurally stable at high temperature - in the case of Ga above 800{degrees}C-have been synthesized by controlling intercalation steps and stabilization procedures. New bidimensional materials with an interlaminar distance about 10-12{angstrom} and with different chemical reactivities in the pillars have thus been produced. The analytical techniques employed to characterize the materials and the processes involved during stabilization include N{sub 2} adsorption, AA, XRD, NH{sub 3}-TPD, TGA-DTA, HR- and MAS-NMR (Al, Si, and Ga) and in-situ IR and DRIFTS. Chemical characterization using high pressure reactions with probe molecules such as diphenylmethane and tert-butylbenzene shows selectivity patterns than can be clearly associated with the microstructure of the PILC used, as well as an effect due to the composition of the pillars. Similar studies with zeolites give patterns that differ from those of PILC, probably because of the change in dimensionality of the internal structure. Poisoning studies with metal porphyrins prove that PLIC have improved resistance compared to standard catalysts. Hydrotreatment of Maya crude results a significant reduction in total sulfur under conditions suitable for commercial operation.

Gomez, S.A.; Mosqueira, L.; Espinosa, J.; Fuentes, G.A. [Universidad A. Metropolitana-Iztapalapa (Mexico)

1993-12-31T23:59:59.000Z

320

Hygrothermal performance of an engineered clay barrier during sustained heating  

SciTech Connect (OSTI)

Bentonitic clay buffers, with a potential for swelling, form an integral part of the natural (geological formation)/engineered multi-barrier concepts being proposed for the disposal of heat-generating radioactive nuclear fuel wastes. The integrity of such barriers during thermal loadings is of primary interest to the assessment of their reliability. This paper discusses the results of a series of experiments performed to assess the performance of buffer material under sustained heating. These experiments were conducted in a large-scale granite block facility. The laboratory modeling approximately simulates the local environment that can be encountered in a disposal vault in a granitic rock mass. Experiments in which the power supply to an embedded heater was held constant are described. The temperature distributions within the buffer and the granite block together with the residual moisture content distributions are documented. Also discussed is the application of a computational model of coupled heat and moisture flows. Moisture and heat transfer in the buffer under coupled gradients is described by the Philip-de Vries-type model in which the hygrothermal parameters are determined separately.

Selvadurai, A.P.S. [Carleton Univ., Ottawa, Ontario (Canada). Dept. of Civil and Environmental Engineering; Onofrei, C. [AECL Research, Pinawa, Manitoba (Canada). Whiteshell Labs.

1993-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

High gradient magnetic separation of iron oxide minerals from soil clays  

E-Print Network [OSTI]

HIGH GRADIENT MAGNETIC SEPARATION OF IRON OXIDE MINERALS FROM SOIL CLAYS A Thesis by DARRELL GENE SCHULZE Submitted to the Graduate College of Texas AIM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... December 1977 Major Subject: Soil Science HIGH GRADIENT MAGNETIC SEPARATION OF IRON OXIDE MINERALS FROM SOIL CLAYS A Thesis DARRELL GENE SCHULZE Approved as to style and content by: (Chairman of C ittee) epartm t) j (Member) (Membe December 1977...

Schulze, Darrell Gene

1977-01-01T23:59:59.000Z

322

Field tests and new design procedure for laterally loaded drilled shafts in clay  

E-Print Network [OSTI]

FIELD TESTS AND NEW DESIGN PROCEDURE FOR LATERALLY LOADED DRILLED SHAFTS IN CLAY A Thesis by l1ARK WILLIAM BIERSCHWALE Submitted to ihe Graduate College Texas A8M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1980 Major Subject: Civil Engineering FIELD TESTS AND NEW DESIGN PROCEDURE FOR LATERALLY LOADED DRILLED SHAFTS IN CLAY A Thesis by NARK WILLIAM BIERSCHWALE Approved as to style and content by: Harry M. Coyle - Chairman...

Bierschwale, Mark W.

1980-01-01T23:59:59.000Z

323

Clay minerals of recent marine sediments to the west of the Mississippi Delta  

E-Print Network [OSTI]

CLAY MINERALS OF RECENT MARINE SEDIMENTS 10 THE WEST OP THE MISSISSIPPI DKLTA A Dissertation By RAYMOND ERANCIS McALLI9TER> Jr. Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY IN OCEANOGRAPHY May* 1958 Major Subject: Geological Oceanography CLAY MINERALS OF RECENT MARINE SEDIMENTS TO THE WEST OF THE MISSISSIPPI DELTA A Dissertation RAYMOND FRANCIS McALLISTER, Jr. Approved...

McAllister, Raymond Francis

1958-01-01T23:59:59.000Z

324

Morphological, mineralogical and physicochemical characteristics of some dark clay soils of Puerto Rico  

E-Print Network [OSTI]

. '. beany of tho soil propox ties, such as plasticity, stickiness, s~elling and shrinking upon wottixxg and dryinp ~ and exchange capacity, are dependent upon the clay mineral fraction of' the soil. It is expected that thc observed rolationships... l. X-ray d5. ffraction pa'tterns for the clay minerals kaolinite~ illite and montmorlllonite . . . , . . . . . . . . , , ~, . Hap of Puerto 8ioo showing several annual rainfall belts and the approximate locations fox thc profiles studied. ~ o...

Acevedo, Gilberto

1958-01-01T23:59:59.000Z

325

Application of the Modified Methylene Blue Test to Detect Clay Minerals in Coarse Aggregate Fines  

E-Print Network [OSTI]

APPLICATION OF THE MODIFIED METHYLENE BLUE TEST TO DETECT CLAY MINERALS IN COARSE AGGREGATE FINES A Thesis by BRANDON THOMAS PITRE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...: Civil Engineering Copyright 2012 Brandon Thomas Pitre ii ABSTRACT The purpose of this study was to implement a new, rapid field method to effectively and accurately detect harmful clay minerals in aggregate fines by using the modified...

Pitre, Brandon

2012-12-04T23:59:59.000Z

326

Enthalpy of adsorption and isotherms for adsorption of naphthenic acid onto clays  

SciTech Connect (OSTI)

The enthalpies of adsorption and the isotherms for adsorption of naphthenic acid onto Na-montmorillonite, Na-kaolinite, and Na-illite were studied by means of calorimetry and the static method at 298.15 K. The results show that the enthalpies of adsorption and saturated adsorption amounts of naphthenic acid on different clays change in the order Na-montmorillonite > Na-illite > Na-kaolinite. The interaction between naphthenic acid and clays is discussed.

Zou, L.; Han, B.; Yan, H. [Academia Sinica, Beijing (China). Inst. of Chemistry] [Academia Sinica, Beijing (China). Inst. of Chemistry; Kasperski, K.L.; Xu, Y. [CANMET, Devon, Alberta (Canada). Energy Mines and Resources] [CANMET, Devon, Alberta (Canada). Energy Mines and Resources; Hepler, L.G. [Univ. of Alberta, Edmonton, Alberta (Canada). Dept. of Chemistry] [Univ. of Alberta, Edmonton, Alberta (Canada). Dept. of Chemistry

1997-06-15T23:59:59.000Z

327

Strength and conformance testing of a GCL used in a solid waste landfill lining system  

SciTech Connect (OSTI)

This paper describes strength and conformance tests conducted on a Bentomat ST geosynthetic clay liner (GCL) used in a composite lining system for the Cells 4 and 5 expansion of the Anchorage Regional Landfill in Anchorage, Alaska. The Cells 4 and 5 lining system included use of an 80-mil, high-density polyethylene (HDPE) liner overlying a GCL on both the sideslopes and base of the cells. The use of this lining system in a Seismic Zone 4 area on relatively steep side slopes required careful evaluation of both internal shear strength of the GCL and interface friction between the GCL and textured HDPE. Laboratory tests were carried out to evaluate both peak and residual GCL internal strengths at normal loads up to 552 kiloPascals (80 pounds per square inch). Laboratory tests also were conducted to evaluate the interface strength between the GCL and Serrot box and point textured HDPE. Interface strengths between both woven and nonwoven sides of the GCL and the textured HDPE were evaluated. Considerations related to use of peak or residual strengths for various interim stability cases are described in this paper. Stability analyses using stress-dependent interface and internal strengths for the GCL are addressed. The quality assurance and conformance testing program adopted for the project on GCL is discussed also.

Merrill, K.S. [CH2M Hill, Anchorage, AK (United States); O`Brien, A.J. [CH2M Hill, Sacramento, CA (United States)

1997-11-01T23:59:59.000Z

328

Formation of hydrocarbons from acid-Clay suspensions by gamma irradiation  

SciTech Connect (OSTI)

The adsorption of certain organic compounds by clays gives rise to the transformation of the adsorbate through the action of the clays. This phenomenon can be enhanced using ionizing radiation. In this context, these kinds of reactions play an important role in many natural and industrial processes. For example, in oil and gas exploration, the source and trap of petroleum hydrocarbons is frequently clay-rich rocks. Clay-water-based muds are also seen as environmentally friendly alternatives to toxic oil-based fluids. The principal processes that occur in sediments are usually held to be of bacterial action and thermal transformation, which may include thermally induced catalytic alteration of the organic debris. On the other hand, radioactive materials are widely distributed throughout Earth. They were more abundant in the past, but are present in petroleum reservoirs. Their presence induced radioactive bombardment, which may have altered these sediments. This important subject has not been extensively studied. The aim of this work is to study the behavior of fatty acids-like behenic acid-and dicarboxylic acids-like fumaric acid-as model compounds, which are adsorbed in a clay mineral (Na-montmorillonite) and exposed to gamma radiation. The results show that the radiation-induced decomposition of the clay-acid system goes along a definitive path (oxidation), rather than following several modes of simultaneous decomposition, as happens in radiolysis without clay or by heating the system. The main radiolytic products for fatty acids are their corresponding hydrocarbons, with one C-atom less than the original acid.

Cruz-Castaneda, J.; Negron-Mendoza, A.; Ramos-Bernal, S. [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, UNAM. Cd. Universitaria, A. P. 70-543, 04510 Mexico (Mexico)

2013-07-03T23:59:59.000Z

329

Reduction And Immobilization Of Hexavalent Chromium By Microbially Reduced Fe-bearing Clay Minerals  

SciTech Connect (OSTI)

Hexavalent chromium (Cr6+) is a major contaminant in the environment. As a redox-sensitive element, the fate and toxicity of chromium is controlled by reduction-oxidation (redox) reactions. Previous research has shown the ability of structural Fe(II) in naturally present and chemically reduced clay minerals to reduce Cr6+ to Cr(III) as a way of immobilization and detoxification. However, it is still poorly known whether or not structural Fe(II) in biologically reduced clay minerals exhibits a similar reactivity and if so, what the kinetics and mechanisms of Cr6+ reduction are. The objective of this study was to determine the kinetics and possible mechanisms of Cr6+ reduction by structural Fe(II) in microbially reduced clay minerals and the nature of reduced Cr(III). Structural Fe(III) in nontronite (NAu-2), montmorillonite (SWy-2), chlorite (CCa-2), and clay-rich sediments from the Ringold Formation of the Hanford site of Washington State, USA was first bioreduced to Fe(II) by an iron-reducing bacterium Geobacter sulfurreducens with acetate as the sole electron donor and anthraquinone-2,6-disulfate (AQDS) as electron shuttle in synthetic groundwater (pH 7). Biogenic Fe(II) was then used to reduce aqueous Cr6+ at three different temperatures, 10°, 20°, and 30°C, in order to determine the temperature dependence of the redox reaction between Cr6+ and clay-Fe(II). The results showed that nontronite and montmorillonite were most effective in reducing aqueous Cr6+ at all three temperatures. In contrast, most Fe(II) in chlorite was not reactive towards Cr6+ reduction at 10°C, though at 30°C there was some reduction. For all the clay minerals, the ratio of total Fe(II) oxidized to Cr6+ reduced was close to the expected stoichiometric value of 3. Characterization of the Cr-clay reaction product with scanning electron microscopy with focused ion beam and transmission electron microscopy with electron energy loss spectroscopy revealed that reduced chromium was possibly in the form of sub-nanometer Cr2O3 in association with residual clay minerals as micro-aggregates. This textural association was expected to minimize the chance of Cr(III) reoxidation upon exposure to oxidants. These results are important for our understanding of how various clay minerals may be used to reductively immobilize the heavy metal contaminant Cr in the environment.

Bishop, Michael E.; Glasser, Paul; Dong, Hailiang; Arey, Bruce W.; Kovarik, Libor

2014-05-15T23:59:59.000Z

330

Solvent and water/surfactant process for removal of bitumen from tar sands contaminated with clay  

SciTech Connect (OSTI)

This patent describes a process for removing bitumen from a tar sand contaminated with clay. It comprises: obtaining a tar sand consisting of bitumen and clay mixed with sand; introducing the tar sand into a stripper vessel; dissolving the bitumen with a solvent, the solvent also removing the clay from the sand into a liquid medium formed with the solvent and bitumen; removing the liquid medium from the sand; and washing the sand with water to which a nonionic surface active agent has been added to remove residual bitumen from the sand, the surfactive agent comprising a linear alcohol having carbon atoms within the range on the order of about eight to fifteen carbon atoms and ethoxylate units on the carbon atoms within the range on the order of about two to eight ethoxylate units, the surfactant being present in the water in an effective amount less than about 0.5 percent by volume.

Guymon, E.P.

1990-11-06T23:59:59.000Z

331

Field Performance of A Compacted Clay Landfill Final cover At A Humid Site  

SciTech Connect (OSTI)

A study was conducted in southern Georgia, USA to evaluate how the hydraulic properties of the compacted clay barrier layer in a landfill final cover changed over a 4-yr service life. The cover was part of a test section constructed in a large drainage lysimeter that allowed CE Database subject headings: landfill, hydrogeology, compacted soils, lysimeters, desiccation continuous monitoring of the water balance. Patterns in the drainage (i.e., flow from the bottom of the cover) record suggest that preferential flow paths developed in the clay barrier soon after construction, apparently in response to desiccation cracking. After four years, the clay barrier was excavated and examined for changes in soil structure and hydraulic conductivity. Tests were conducted in situ with a sealed double-ring infiltrometer and two-stage borehole permeameters and in the laboratory on hand-carved blocks taken during construction and after four years of service. The in situ and laboratory tests indicated that the hydraulic conductivity increased approximately three orders of magnitude (from ? 10-7 to ? 10-4 cm s-1) during the service life. A dye tracer test and soil structure analysis showed that extensive cracking and root development occurred throughout the entire depth of the barrier layer. Laboratory tests on undisturbed specimens of the clay barrier indicated that the hydraulic conductivity of damaged clay barriers can be under-estimated significantly if small specimens (e.g., tube samples) are used for hydraulic conductivity assessment. The findings also indicate that clay barriers must be protected from desiccation and root intrusion if they are expected to function as intended, even at sites in warm, humid locations.

Albright, William H.; Benson, Craig H.; Gee, Glendon W.; Abichou, Tarek; Mcdonald, Eric V.; Tyler, Scott W.; Rock, Steven

2006-11-01T23:59:59.000Z

332

Dynamics of confined reactive water in Smectic clay-zeolite composites.  

SciTech Connect (OSTI)

The dynamics of water confined to mesoporous regions in minerals such as swelling clays and zeolites is fundamental to a wide range of resource management issues impacting many processes on a global scale, including radioactive waste containment, desalination, and enhanced oil recovery. Large-scale atomic models of freely diffusing multilayer smectite particles at low hydration confined in a silicalite cage are used to investigate water dynamics in the composite environment with the ReaxFF reactive force field over a temperature range of 300 647 K. The reactive capability of the force field enabled a range of relevant surface chemistry to emerge, including acid/base equilibria in the interlayer calcium hydrates and silanol formation on the edges of the clay and inner surface of the zeolite housing. After annealing, the resulting clay models exhibit both mono- and bilayer hydration structures. Clay surface hydration redistributed markedly and yielded to silicalite water loading. We find that the absolute rates and temperature dependence of water dynamics compare well to neutron scattering data and pulse field gradient measures from relevant samples of Ca-montmorillonite and silicalite, respectively. Within an atomistic, reactive context, our results distinguish water dynamics in the interlayer Ca(OH)2 nH2O environment from water flowing over the clay surface, and from water diffusing within silicalite. We find that the diffusion of water when complexed to Ca hydrates is considerably slower than freely diffusing water over the clay surface, and the reduced mobility is well described by a difference in the Arrhenius pre-exponential factor rather than a change in activation energy.

Pitman, Michael C. [IBM Watson Research Center, Yorktown Heights, NY; Van Duin, Adri C. T. [Pennsylvania State University, University Park, PA

2012-01-01T23:59:59.000Z

333

Dynamics of confined reactive water in smectite clay-zeolite composites  

SciTech Connect (OSTI)

The dynamics of water confined to mesoporous regions in minerals such as swelling clays and zeolites is fundamental to a wide range of resource management issues impacting many processes on a global scale, including radioactive waste containment, desalination, and enhanced oil recovery. Large-scale atomic models of freely diffusing multilayer smectite particles at low hydration confined in a silicalite cage are used to investigate water dynamics in the composite environment with the ReaxFF reactive force field over a temperature range of 300 647 K. The reactive capability of the force field enabled a range of relevant surface chemistry to emerge, including acid/base equilibria in the interlayer calcium hydrates and silanol formation on the edges of the clay and inner surface of the zeolite housing. After annealing, the resulting clay models exhibit both mono- and bilayer hydration structures. Clay surface hydration redistributed markedly and yielded to silicalite water loading. We find that the absolute rates and temperature dependence of water dynamics compare well to neutron scattering data and pulse field gradient measures from relevant samples of Ca-montmorillonite and silicalite, respectively. Within an atomistic, reactive context, our results distinguish water dynamics in the interlayer Ca(OH)2 nH2O environment from water flowing over the clay surface, and from water diffusing within silicalite. We find that the diffusion of water when complexed to Ca hydrates is considerably slower than freely diffusing water over the clay surface, and the reduced mobility is well described by a difference in the Arrhenius pre-exponential factor rather than a change in activation energy.

Pitman, Michael C. [IBM Watson Research Center, Yorktown Heights, NY; Van Duin, Adri C. T. [Pennsylvania State University, University Park, PA

2012-01-01T23:59:59.000Z

334

Structural, textural and catalytic properties of Al-, Ti-pillared clays  

SciTech Connect (OSTI)

Al-, Ti- and Zr-pillared clays were characterized and NiMo/Pilc`s were tested in HDS reactions. The combination of activity measurements with Moessbauer Spectroscopy and x-ray microanalysis at microscopical scale give insight in the metal phases migration during pillaring, reaction and regeneration steps. {Alpha}-Fe phase in free Fe{sub 2}O{sub 3} islands predominate together with structural Fe{sup 3+} phase, but during the catalytic reaction Fe{sup 2+} forms. Delamination of the Ti- and Zr-Clay supports, together with high Lewis acidity might enhance their catalytic properties.

Ramos-Galvan, C.E.; Dominguez, J.M.; Sandoval-Robles, G.; Castillo-Mares, A.; Nava E, N.

1996-12-31T23:59:59.000Z

335

Ceramics Technology Project database: September 1991 summary report. [Materials for piston ring-cylinder liner for advanced heat/diesel engines  

SciTech Connect (OSTI)

The piston ring-cylinder liner area of the internal combustion engine must withstand very-high-temperature gradients, highly-corrosive environments, and constant friction. Improving the efficiency in the engine requires ring and cylinder liner materials that can survive this abusive environment and lubricants that resist decomposition at elevated temperatures. Wear and friction tests have been done on many material combinations in environments similar to actual use to find the right materials for the situation. This report covers tribology information produced from 1986 through July 1991 by Battelle columbus Laboratories, Caterpillar Inc., and Cummins Engine Company, Inc. for the Ceramic Technology Project (CTP). All data in this report were taken from the project's semiannual and bimonthly progress reports and cover base materials, coatings, and lubricants. The data, including test rig descriptions and material characterizations, are stored in the CTP database and are available to all project participants on request. Objective of this report is to make available the test results from these studies, but not to draw conclusions from these data.

Keyes, B.L.P.

1992-06-01T23:59:59.000Z

336

PII S0016-7037(98)00136-7 The kinetics of mixed Ni-Al hydroxide formation on clay and aluminum oxide minerals  

E-Print Network [OSTI]

PII S0016-7037(98)00136-7 The kinetics of mixed Ni-Al hydroxide formation on clay and aluminum. This finding indicates that the dissolution of clay and aluminum oxide minerals can be promoted by metal ions

Sparks, Donald L.

337

Multiphase flow and multicomponent reactive transport model of the ventilation experiment in Opalinus clay  

SciTech Connect (OSTI)

During the construction and operational phases of a high-level radioactive waste (HLW) repository constructed in a clay formation, ventilation of underground drifts will cause desaturation and oxidation of the rock. The Ventilation Experiment (VE) was performed in a 1.3 m diameter unlined horizontal microtunnel on Opalinus clay at Mont Terri underground research laboratory in Switzerland to evaluate the impact of desaturation on rock properties. A multiphase flow and reactive transport model of VE is presented here. The model accounts for liquid, vapor and air flow, evaporation/condensation and multicomponent reactive solute transport with kinetic dissolution of pyrite and siderite and local-equilibrium dissolution/precipitation of calcite, ferrihydrite, dolomite, gypsum and quartz. Model results reproduce measured vapor flow, liquid pressure and hydrochemical data and capture the trends of measured relative humidities, although such data are slightly overestimated near the rock interface due to uncertainties in the turbulence factor. Rock desaturation allows oxygen to diffuse into the rock and triggers pyrite oxidation, dissolution of calcite and siderite, precipitation of ferrihydrite, dolomite and gypsum and cation exchange. pH in the unsaturated rock varies from 7.8 to 8 and is buffered by calcite. Computed changes in the porosity and the permeability of Opalinus clay in the unsaturated zone caused by oxidation and mineral dissolution/precipitation are smaller than 5%. Therefore, rock properties are not expected to be affected significantly by ventilation of underground drifts during construction and operational phases of a HLW repository in clay.

Zheng, L.; Samper, J.; Montenegro, L.; Major, J.C.

2008-10-15T23:59:59.000Z

338

Differences in potassium forms between cutans and adjacent soil matrix in a Grey Clay Soil  

E-Print Network [OSTI]

Differences in potassium forms between cutans and adjacent soil matrix in a Grey Clay Soil Fan Liu1 , R. J. Gilkes, R. D. Hart, and A. Bruand2 Department of Soil Science and Plant Nutrition, Faculty are common fabric features in soil and represent foci of chemical and biological reactions. The influence

Boyer, Edmond

339

Layer-by-Layer Assembly of Clay-filled Polymer Nanocomposite Thin Films  

E-Print Network [OSTI]

A variety of functional thin films can be produced using the layer-by-layer assembly technique. In this work, assemblies of anionic clay and cationic polymer were studied with regard to film growth and gas barrier properties. A simple, yet flexible...

Jang, Woo-Sik

2010-01-14T23:59:59.000Z

340

Validation of Coupled Simulation of Excavations in Saturated Clay: Camboinhas Case History  

E-Print Network [OSTI]

Validation of Coupled Simulation of Excavations in Saturated Clay: Camboinhas Case History)GM .1943-5622.0000077. © 2011 American Society of Civil Engineers. CE Database subject headings: Excavation history. Introduction Excavations in soft soils are becoming more common to construct underground

Zornberg, Jorge G.

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Smectite clay adsorbents of aflatoxin B1 to amend animal feed  

E-Print Network [OSTI]

Smectite clay has been shown in studies over the past 20 years to sorb aflatoxin B1 (AfB1) in animal feed and thereby reduce its toxic influence on animals. In this study, 20 smectite samples were selected from industrial products or reference...

Kannewischer, Ines

2009-05-15T23:59:59.000Z

342

Engineering Geology 54 (1999) 159165 Mechanical interaction between swelling compacted clay and  

E-Print Network [OSTI]

a a EnvirosQuantiSci Ltd., 45 Station Road, Henley-On-Thames RG9 1AT, UK b University of Bath, Bath, UK. We show that such mass loss is limited as a mechanism for leaching away the emplaced barrier, yet may Elsevier Science B.V. All rights reserved. Keywords: Clay barrier; Colloids; Fractured rock; Leaching

Peletier, Mark

343

Original article Mechanical behaviour of silty clay loam/peat mixtures  

E-Print Network [OSTI]

Original article Mechanical behaviour of silty clay loam/peat mixtures: cyclic compression or amended with 20 or 40 % by volume of spagh- num peat, were studied at different values of water contentPa is increased to about 55 and 115 % for 20 and 40 % peat contents, respectively. A comparison of the cyclic test

Paris-Sud XI, Université de

344

Evaluating the Effects of Environmentally Acceptable Clay Stabilizer on Bandera Sandstone  

E-Print Network [OSTI]

it possible for large areas of the formation to be effectively treated. 3.2.1.1 BENTONITE Bentonite is impure clay consisting mainly of montmorillonite. It is an absorbent aluminum phyllosilicate (Casás, L. M., M. Pozo, et al. 2013). Bentonite...

Emecheta, Akunna C

2013-08-26T23:59:59.000Z

345

Evalutaion of Multi-Stage Sandstone Acidizing Uging an Organic Mud Acid and a Clay Stabalizer  

E-Print Network [OSTI]

and clay particles. The purpose of this study is to present and evaluate multi-stage acid injection into the Bandera sandstone cores to remove formation damage. In this study, coreflood experiments were conducted on Bandera sandstone cores (1.5 in. x 6 in...

Sakipour, Armin

2013-05-29T23:59:59.000Z

346

Preliminary inventory of pre-Cenozoic clay shales and argillites of the conterminous United States  

SciTech Connect (OSTI)

Cretaceous shales of the Western Interior of the United States occur in vast quantities and in thickness greater than 150 m (500 ft). Some older Mesozoic, Paleozoic, and Precambrian shale and argillites also appear to approach these thicknesses in deposits of considerable lateral extent. These older rocks commonly have a lower proportion of expandable clays and lower water contents.

Connolly, J.R.; Woodward, L.A.

1980-03-01T23:59:59.000Z

347

Permeability of illite-bearing shale: 1. Anisotropy and effects of clay content and loading  

E-Print Network [OSTI]

Permeability of illite-bearing shale: 1. Anisotropy and effects of clay content and loading-rich shale recovered from the Wilcox formation and saturated with 1 M NaCl solution varies from 3 Ã? 10Ã?22 transport; KEYWORDS: permeability, shale, connected pore space Citation: Kwon, O., A. K. Kronenberg, A. F

Herbert, Bruce

348

Status of LANL investigations of temperature constraints on clay in repository environments  

SciTech Connect (OSTI)

The Used Fuel Disposition (UFD) Campaign is presently evaluating various generic options for disposal of used fuel. The focus of this experimental work is to characterize and bound Engineered Barrier Systems (EBS) conditions in high heat load repositories. The UFD now has the ability to evaluate multiple EBS materials, waste containers, and rock types at higher heat loads and pressures (including deep boreholes). The geologic conditions now available to the U.S.A. and the international community for repositories include saturated and reduced water conditions, along with higher pressure and temperature (P, T) regimes. Chemical and structural changes to the clays, in either backfill/buffer or clay-rich host rock, may have significant effects on repository evolution. Reduction of smectite expansion capacity and rehydration potential due to heating could affect the isolation provided by EBS. Processes such as cementation by silica precipitation and authigenic illite could change the hydraulic and mechanical properties of clay-rich materials. Experimental studies of these repository conditions at high P,T have not been performed in the U.S. for decades and little has been done by the international community at high P,T. The experiments to be performed by LANL will focus on the importance of repository chemical and mineralogical conditions at elevated P,T conditions. This will provide input to the assessment of scientific basis for elevating the temperature limits in clay barriers.

Caporuscio, Florie A [Los Alamos National Laboratory; Cheshire, Michael C [Los Alamos National Laboratory; Newell, Dennis L [Los Alamos National Laboratory; McCarney, Mary Kate [Los Alamos National Laboratory

2012-08-22T23:59:59.000Z

349

(Data in thousand metric tons unless otherwise noted) Domestic Production and Use: In 2009, clay and shale production was reported in 41 States. About 190 companies  

E-Print Network [OSTI]

44 CLAYS (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: In 2009, clay and shale production was reported in 41 States. About 190 companies operated approximately 830% drilling mud, 17% foundry sand bond, 14% iron ore pelletizing, and 20% other uses; common clay--57% brick

350

(Data in thousand metric tons unless otherwise noted) Domestic Production and Use: In 2008, clay and shale production was reported in 41 States. About 190 companies  

E-Print Network [OSTI]

46 CLAYS (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: In 2008, clay and shale production was reported in 41 States. About 190 companies operated approximately 830% drilling mud, 17% foundry sand bond, 14% iron ore pelletizing, and 20% other uses; common clay--57% brick

351

In situ testing to determination field-saturated hydraulic conductivity of UMTRA Project disposal cell covers, liners, and foundation areas. Special study  

SciTech Connect (OSTI)

This special study was conducted to prepare a guidance document for selecting in situ hydraulic conductivity (K) tests, comparing in situ testing methods, and evaluating the results of such tests. This report may be used as a practical decision-making tool by the Uranium Mill Tailings Remedial Action (UMTRA) Project staff to determine which testing method will most efficiently achieve the field-saturated K results needed for long-term planning. A detailed section on near-surface test methods discusses each method which may be applicable to characterization of UMTRA disposal cell covers, liners and foundation materials. These potentially applicable test methods include the sealed double-ring infiltrometer (SDRI), the air-entry permeameter (AEP), the guelph permeameter, the two-stage borehole technique (TSB), the pressure infiltrometer, and the disk permeameter. Analytical solutions for these methods are provided, and limitations of these solutions are discussed, and a description of testing equipment design and installation are provided.

Not Available

1994-02-01T23:59:59.000Z

352

Bioreduction of Fe-bearing clay minerals and their reactivity toward pertechnetate (Tc-99)  

SciTech Connect (OSTI)

99Technetium (99Tc) is a fission product of uranium-235 and plutonium-239 and poses a high environmental hazard due to its long half-life (t1/2 = 2.13 x 105 y), abundance in nuclear wastes, and environmental mobility under oxidizing conditions [i.e., Tc(VII)]. Under reducing conditions, Tc(VII) can be reduced to insoluble Tc(IV). Ferrous iron [Fe(II)], either in aqueous form or in mineral form, has been used to reduce Tc(VII) to Tc(IV). However, the reactivity of Fe(II) from clay minerals, other than nontronite, toward immobilization of Tc(VII) and its role in retention of reduced Tc(IV) have not been investigated. In this study the reactivity of a suite of clay minerals toward Tc(VII) reduction and immobilization was evaluated. The clay minerals chosen for this study included five members in the smectite-illite (S-I) series, (montmorillonite, nontronite, rectorite, mixed layered I-S, and illite), chlorite, and palygorskite. Fe-oxides were removed from these minerals with a modified dithionite-citrate-bicarbonate (DCB) procedure. The total Fe content of these clay minerals, after Fe-oxide removal, ranged from 0.7 to 30.4% by weight, and the Fe(III)/Fe(total) ratio ranged from 44.9 to 98.5%. X-ray diffraction (XRD) and Mössbauer spectroscopy results showed that after Fe oxide removal the clay minerals were free of Fe-oxides. Scanning electron microscopy (SEM) revealed that little dissolution occurred during the DCB treatment. Bioreduction experiments were performed in bicarbonate buffer (pH-7) with Fe(III) in the clay minerals as the sole electron acceptor, lactate as the sole electron donor, and Shewanella Putrifaciens CN32 cells as mediators. In select tubes, anthraquinone-2,6-disulfate (AQDS) was added as electron shuttle to facilitate electron transfer. The extent of Fe(III) bioreduction was the highest for chlorite (~43 wt%) and the lowest for palygorskite (~4.17 wt%). In the S-I series, NAu-2 was the most reducible (~31 %) and illite the least (~0.4 %). The extent and initial rate of bioreduction were positively correlated with the percent smectite in the S-I series (i.e., layer expandability). Fe(II) in the bioreduced clay minerals subsequently was used to reduce Tc(VII) to Tc(IV) in PIPES buffer. Similar to the trend of bioreduction, in the S-I series, reduced smectite showed the highest reactivity toward Tc(VII), and reduced illite exhibited the least. The initial rate of Tc(VII) reduction, after normalization to clay and Fe(II) concentrations, was positively correlated with the percent smectite in the S-I series. Fe(II) in chlorite and palygorskite was also reactive toward Tc(VII) reduction. These data demonstrate that crystal chemical parameters (layer expandability, Fe and Fe(II) contents, and surface area etc.) play important roles in controlling the extent and rate of bioreduction and the reactivity toward Tc(VII) reduction. Reduced Tc(IV) resides within clay mineral matrix, and this association could minimize any potential of reoxidation over long term.

Bishop, Michael E.; Dong, Hailiang; Kukkadapu, Ravi K.; Liu, Chongxuan; Edelmann, Richard E.

2011-07-01T23:59:59.000Z

353

A new class of non-zeolitic sorbents for air separations: Lithium ion exchanged pillared clays  

SciTech Connect (OSTI)

Zeolites are the only known sorbents that adsorb N{sub 2} selectively over O{sub 2}, and are used for industrial air separation. Pillared clays (PILCs) have a high Broensted acidity (k.e., high proton density). It is found in this study that when the protons are exchanged by alkali metal ions, in particular Li{sup +}, the ion exchanged pillared clays can exhibit a high N{sub 2}/O{sub 2} adsorption selectivity that rivals that of the zeolites. The first result shows a pure-component adsorption ratio of N{sub 2}/O{sub 2} = 3.2 (at 25 C and 1 atm) for Li{sup +}-exchanged PILC. The N{sub 2} capacity, however, is only 20% that of the zeolite, and remains to be improved. A systematic investigation is conducted on the effects of three factors on the N{sub 2}/O{sub 2} selectivity: (1) starting clays (tetrahedral vs octahedral isomorphous substitution and clays with different charge densities), (2) different metal oxides as pillars, and (3) different ion exchange alkali metal cations (Li{sup +}, Na{sup +}, K{sup +}, Rb{sup +}, and Cs{sup +}). The highest N{sub 2}/O{sub 2} selectivities are achieved by using clays with the highest charge densities, metal oxides forming pillars with the narrowest gallery spaces, and ion exchange cations with the smallest ionic radii. Effects by all three factors are qualitatively understood. The high N{sub 2}/O{sub 2} selectivity on the Li{sup +} exchanged PILC is the result of the small ionic radius (and hence high polarizing power) of Li{sup +} and the strong quadrupole moment of the N{sub 2} molecule. Moreover, a technique is developed with which the amount of the exchanged cations can exceed that allowed by the original cation exchange capacity of the clay by using a high pH value in the ion exchange solution.

Cheng, L.S.; Yang, R.T. [State Univ. of New York, Buffalo, NY (United States). Dept. of Chemical Engineering

1995-06-01T23:59:59.000Z

354

Long-term modeling of glass waste in portland cement- and clay-based matrices  

SciTech Connect (OSTI)

A set of ``templates`` was developed for modeling waste glass interactions with cement-based and clay-based matrices. The templates consist of a modified thermodynamic database, and input files for the EQ3/6 reaction path code, containing embedded rate models and compositions for waste glass, cement, and several pozzolanic materials. Significant modifications were made in the thermodynamic data for Th, Pb, Ra, Ba, cement phases, and aqueous silica species. It was found that the cement-containing matrices could increase glass corrosion rates by several orders of magnitude (over matrixless or clay matrix systems), but they also offered the lowest overall solubility for Pb, Ra, Th and U. Addition of pozzolans to cement decreased calculated glass corrosion rates by up to a factor of 30. It is shown that with current modeling capabilities, the ``affinity effect`` cannot be trusted to passivate glass if nuclei are available for precipitation of secondary phases that reduce silica activity.

Stockman, H.W.; Nagy, K.L. [Sandia National Labs., Albuquerque, NM (United States); Morris, C.E. [Wollongong Univ., NSW (Australia). Dept. of Civil and Mining Engineering

1995-12-01T23:59:59.000Z

355

Investigations of Near-Field Thermal-Hydrologic-Mechanical-Chemical Models for Radioactive Waste Disposal in Clay/Shale Rock  

SciTech Connect (OSTI)

Clay/shale has been considered as potential host rock for geological disposal of high-level radioactive waste throughout the world, because of its low permeability, low diffusion coefficient, high retention capacity for radionuclides, and capability to self-seal fractures. For example, Callovo-Oxfordian argillites at the Bure site, France (Fouche et al., 2004), Toarcian argillites at the Tournemire site, France (Patriarche et al., 2004), Opalinus Clay at the Mont Terri site, Switzerland (Meier et al., 2000), and Boom clay at the Mol site, Belgium (Barnichon and Volckaert, 2003) have all been under intensive scientific investigation (at both field and laboratory scales) for understanding a variety of rock properties and their relationships to flow and transport processes associated with geological disposal of radioactive waste. Figure 1-1 presents the distribution of clay/shale formations within the USA.

Liu, H.H.; Li, L.; Zheng, L.; Houseworth, J.E.; Rutqvist, J.

2011-06-20T23:59:59.000Z

356

Micromorphology and Stable Isotope Geochemistry of Historical Pedogenic Siderite Formed in PAH-Contaminated Alluvial Clay Soils, Tennessee, USA  

E-Print Network [OSTI]

Alluvial clay soil samples from six boreholes advanced to depths of 400–450 cm (top of limestone bedrock) from the Chattanooga Coke Plant (CCP) site were examined micromorphologically and geochemically in order to determine if pedogenic siderite (Fe...

Driese, S.G.; Ludvigson, Greg A.; Roberts, Jennifer A.; Fowle, David A.; Gonzalez, Luis A.; Smith, Jon Jay; Vulava, V.M.; McKay, L.D.

2010-11-01T23:59:59.000Z

357

Molecular dynamics simulation of complex molecules at interfaces: dendritic surfactants in clay and amyloid peptides near lipid bilayers  

E-Print Network [OSTI]

We apply a molecular dynamics (MD) simulation technique to complex molecules at interfaces. Partitioning of dendritic surfactants into clay gallery and Ab protein behavior near hydrated lipids are chosen for the purpose. Using a full atomistic model...

Han, Kunwoo

2009-06-02T23:59:59.000Z

358

Detailed mineralogical characterization of the Bullfrog and Tram members USW-G1, with emphasis on clay mineralogy  

SciTech Connect (OSTI)

The detailed mineralogy of the Bullfrog and Tram Members of the Crater Flat Tuff from drill hole USW-G1 has been examined, primarily to characterize fully the amounts and types of clay minerals in the tuffs and the possible effects clay minerals have on rock properties. Results of bulk sample x-ray diffraction analyses agree closely with previous determinations, although slightly higher clay mineral contents were found in this study. X-ray diffraction analysis of fine fractions revealed that the clay minerals in the tuffs are sodium-saturated montmorillonite-beidellites with typical layer charges and no high-charge layers. These smectites are found in virtually all samples of the Bullfrog and Tram, and there is no correlation between the amounts of smectites and the amounts of zeolite, quartz, and feldspar. Smectites are present in both welded and nonwelded horizons and are scarce in some zones with slight-to-absent welding.

Bish, D.L.

1981-10-01T23:59:59.000Z

359

Geology and kinematics of a clay-rich landslide with an undulatory slip surface  

E-Print Network [OSTI]

in thickness from 1 to 3 meters, and exhibits an i. rregular channel geometry, largely controlled by bedrock inhomogeneity in a structurally complex Franciscan terrain (highly deformed clay- shale). In map view, the landslide has an "hourglass" configuration... internal deformation. Maximum slide mass thicken- ing of 30-40y is associated with the basal step. Lithologic variations within the slide mass (i. e. erratic distribution of a sandy gravel unit) do not affect the steady-state profile, which is largely...

Lantz, James Robert

1984-01-01T23:59:59.000Z

360

Identification of Pore Structure and Clay Content from Seismic Data within an Argillaceous Sandstone Reservoir  

E-Print Network [OSTI]

IDENTIFICATION OF PORE STRUCTURE AND CLAY CONTENT FROM SEISMIC DATA WITHIN AN ARGILLACEOUS SANDSTONE RESERVOIR A Thesis by ROBERT LELAND SCHELSTRATE Submitted to the Office of Graduate and Professional Studies of Texas A&M University... Ds Compressibility of the rock matrix Dd Compressibility of the dry rock frame Df Compressibility of the pore-filling fluid F, FK Frame flexibility factors kd Bulk modulus of dry rock Ks Bulk modulus of the rock...

Schelstrate, Robert

2014-08-11T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Kinetics of Mixed Ni-Al Precipitate Formation on a Soil Clay Fraction  

E-Print Network [OSTI]

Kinetics of Mixed Ni-Al Precipitate Formation on a Soil Clay Fraction D A R R Y L R . R O B E R Management Laboratory, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland The kinetics of mixed Ni-Al Ni- Al LDH formation. The initial Ni concentration was 3 mM with a solid/solution ratio of 10 g L-1

Sparks, Donald L.

362

Preliminary design of drilled shafts in clay for supporting precast panel retaining walls  

E-Print Network [OSTI]

Leon Holloway, B. S. , Texas A&M University Chairman of Advisory Committee: Dr. Harry M. Coyle The behavior of a laterally loaded drilled shaft in clay has been investigated by conducting a second lateral load test on an instrumented shaft. For each... increment of the applied lateral load, the shaft: rota- tion, the soil resistance, and the lateral deflection were measured. The soil resistance along the shaft was measured using a series of pneumatic pressure cells. The lateral deflection was measured...

Holloway, George Leon

1978-01-01T23:59:59.000Z

363

On grouting using a suspension of ultrafine clay on artificially cracked rock samples  

SciTech Connect (OSTI)

Recently there has been increasing social interest in the effective disposal of low-level radioactive wastes. The use of underground rock caverns is considered as a possible repository space. This paper presents a new grouting method which uses a suspension of liquefied ultrafine clay in fractured rock masses. In order to demonstrate the effect to block open cracks, two experiments were carried out on large-sized granite samples with open cracks. The experiments proved the method to be highly effective.

Ito, Y.; Sakaguchi, T.; Nishiyama, K. [Kumagai Gumi Co., Ltd., Tokyo (Japan). Nuclear and Energy Dept.; Fujiwara, A. [Radioactive Waste Management Center, Tokyo (Japan). Second Research Div.

1993-12-31T23:59:59.000Z

364

Compositional characteristics of the Fire Clay coal bed in a portion of eastern Kentucky  

SciTech Connect (OSTI)

The Fire Clay (Hazard No. 4) coal bed (Middle Pennsylvanian Breathitt Formation) is one of the most extensively mined coal in eastern Kentucky. The coal is used for metallurgical and steam end uses and, with its low sulfur content, should continue to be a prime steam coal. This study focuses on the petrology, mineralogy, ash geochemistry, and palynology of the coal in an eight 7.5-min quadrangle area of Leslie, Perry, Knott, and Letcher counties.

Hower, J.C.; Andrews, W.M. Jr.; Rimmer, S.M. (Univ. of Kentucky, Lexington (United States)); Eble, C.F. (Kentucky Geological Survey, Lexington (United States))

1991-08-01T23:59:59.000Z

365

Fine particle clay catalysts for coal liquefaction. Quarterly technical progress report, November 9, 1991--February 8, 1992  

SciTech Connect (OSTI)

The investigation of methods for the production and testing of iron-pillared clay catalysts was continued in this quarter. The surface area of the mixed alumina/iron pillared clay catalyst decreased to 51 m{sup 2}/g on sulfidation. Thus the stability of the alumina pillars during the sulfidation and thermal treatments prevented the total collapse that occurred in the case of the iron-pillared clays. Previously the mixed alumina/iron pillared clays were tested for hydrocracking activities with bibenzyl. This testing was extended to a determination of activity with a second model compound substrate (pyrene), representative of the polynuclear aromatic systems present in coal. Testing of the mixed alumina/iron-pillared catalysts with 1-methylnaphthalene gave interesting results that demonstrate shape selectivity. The clay-supported iron hydroxyoxide catalysts prepared by impregnation of iron species on acidic clays were further investigated. Sulfidation of these catalysts using the carbon disulfide in situ method gave hydrocracking activities with bibenzyl that were somewhat less than those obtained by presulfidation with H{sub 2}/H{sub 2}S mixtures. Liquefaction of Wyodak subbituminous coal was very successful with the iron impregnated clay catalyst, giving a highly soluble product. High conversions were also obtained with the mixed alumina/iron-pillared clay catalyst, but the yield of oil-solubles was considerably lower. Several new catalysts were synthesized with the idea of decreasing the pillar density and thereby increasing the micropore volume. These catalysts were prepared by first pillaring with an organic ammonium pillaring agent, then introducing a lower number of silica or alumina pillars. Finally the iron component was added either before or after thermal removal of organic pillars.

Olson, E.S.

1995-10-01T23:59:59.000Z

366

Authigenic clay minerals in sandstones of the Delaware Mountain Group: Bell Canyon and Cherry Canyon Formations, Waha Field, West Texas  

E-Print Network [OSTI]

AUTHIGENIC CLAY MINERALS IN SANDSTONES OF THE DELAWARE MOUNTAIN GROUP: BELL CANYON AND CHERRY CANYON FORMATIONS, WAHA FIELD, WEST TEXAS A Thesis by SUZETTE DENISE WALLING Submitted to the Office of Graduate Studies of Texas A&M University... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1992 Major Subject: Geology AUTHIGENIC CLAY MINERALS IN SANDSTONES OF THE DELAWARE MOUNTAIN GROUP: BELL CANYON AND CHERRY CANYON FORMATIONS, WAHA FIELD, WEST TEXAS...

Walling, Suzette Denise

1992-01-01T23:59:59.000Z

367

Preparation of anionic clay-birnessite manganese oxide composites by interlayer oxidation of oxalate ions by permanganate  

SciTech Connect (OSTI)

Oxalate intercalated anionic clay-like nickel zinc hydroxysalt was obtained starting from nickel zinc hydroxyacetate, Ni{sub 3}Zn{sub 2}(OH){sub 8}(OAc){sub 2}{center_dot}2H{sub 2}O, by anion exchange. The intercalated oxalate species was reacted with potassium permanganate in such a way that the layered manganese oxide formed was within the interlayer region of the anionic clay resulting in a layered composite in which the negative charges on the birnessite type manganese oxide layers compensate the positive charges on the anionic clay layers. Birnessite to anionic clay ratio could be varied by varying the reaction time or the amount of potassium permanganate used. - Graphical abstract: Nickel zinc hydroxyoxalate was reacted with potassium permanganate to get nickel zinc hydroxide birnessite composites in which the positive charges on the hydroxide layers are neutralized by the negative charges on birnessite layers. Highlights: Black-Right-Pointing-Pointer Anionic and cationic layered solid composites prepared. Black-Right-Pointing-Pointer Ni-Zn hydroxyoxalate reacted with KMnO{sub 4} to deposit MnO{sub 2} in the interlayer. Black-Right-Pointing-Pointer Birnessite layers coexist with anionic clay layers in the composites. Black-Right-Pointing-Pointer Birnessite/anionic clay ratio controlled by amount of KMnO{sub 4} used and reaction time.

Arulraj, James [Materials Research Group, Department of Chemistry, St. Joseph's College, 36 Langford Road, Bangalore 560 027 (India)] [Materials Research Group, Department of Chemistry, St. Joseph's College, 36 Langford Road, Bangalore 560 027 (India); Rajamathi, Michael, E-mail: mikerajamathi@rediffmail.com [Materials Research Group, Department of Chemistry, St. Joseph's College, 36 Langford Road, Bangalore 560 027 (India)] [Materials Research Group, Department of Chemistry, St. Joseph's College, 36 Langford Road, Bangalore 560 027 (India)

2013-02-15T23:59:59.000Z

368

488-4D ASH LANDFILL CLOSURE CAP HELP MODELING  

SciTech Connect (OSTI)

At the request of Area Completion Projects (ACP) in support of the 488-4D Landfill closure, the Savannah River National Laboratory (SRNL) has performed Hydrologic Evaluation of Landfill Performance (HELP) modeling of the planned 488-4D Ash Landfill closure cap to ensure that the South Carolina Department of Health and Environmental Control (SCDHEC) limit of no more than 12 inches of head on top of the barrier layer (saturated hydraulic conductivity of no more than 1.0E-05 cm/s) in association with a 25-year, 24-hour storm event is not projected to be exceeded. Based upon Weber 1998 a 25-year, 24-hour storm event at the Savannah River Site (SRS) is 6.1 inches. The results of the HELP modeling indicate that the greatest peak daily head on top of the barrier layer (i.e. geosynthetic clay liner (GCL) or high density polyethylene (HDPE) geomembrane) for any of the runs made was 0.079 inches associated with a peak daily precipitation of 6.16 inches. This is well below the SCDHEC limit of 12 inches.

Phifer, M.

2014-11-17T23:59:59.000Z

369

State of the art design: A closure system for the largest hazardous waste landfill at the Savannah River Site  

SciTech Connect (OSTI)

This paper discusses the cover system proposed for a 55-acre, hazardous waste closure of the sanitary landfill at the Savannah River Site, near Aiken, South Carolina. The proposed cover system has been designed to accommodate a significant amount of post-closure settlement while maintaining a permeability of 1 {times} 10{sup {minus}7} cm/s or less throughout its 30-year, regulatory lifetime. A composite cover consisting of a geomembrane (GM) underlain by a geosynthetic clay liner (GCL) was selected because of its extremely low permeability, ability to elongate without tearing, and capacity to ``self-heal`` if punctured. These characteristics will enable the cover system to accommodate differential settlement without cracking or tearing, this providing long-term protection with minimal maintenance. Also, to improve the ability of the cover system to span voids that may develop in the underlying waste, a geogrid has been included in the foundation layer. A gas vent layer has been included to allow for the safe collection and venting of landfill gases.

Bartlett, S.F.; Serrato, M.G.; McMullin, S.R.

1992-12-31T23:59:59.000Z

370

State of the art design: A closure system for the largest hazardous waste landfill at the Savannah River Site  

SciTech Connect (OSTI)

This paper discusses the cover system proposed for a 55-acre, hazardous waste closure of the sanitary landfill at the Savannah River Site, near Aiken, South Carolina. The proposed cover system has been designed to accommodate a significant amount of post-closure settlement while maintaining a permeability of 1 [times] 10[sup [minus]7] cm/s or less throughout its 30-year, regulatory lifetime. A composite cover consisting of a geomembrane (GM) underlain by a geosynthetic clay liner (GCL) was selected because of its extremely low permeability, ability to elongate without tearing, and capacity to self-heal'' if punctured. These characteristics will enable the cover system to accommodate differential settlement without cracking or tearing, this providing long-term protection with minimal maintenance. Also, to improve the ability of the cover system to span voids that may develop in the underlying waste, a geogrid has been included in the foundation layer. A gas vent layer has been included to allow for the safe collection and venting of landfill gases.

Bartlett, S.F.; Serrato, M.G.; McMullin, S.R.

1992-01-01T23:59:59.000Z

371

Closure of the Brewer Gold Mine by pit backfilling  

SciTech Connect (OSTI)

Brewer Gold Mine, located in north-central South Carolina, is implementing an innovative reclamation plan that includes backfilling the main Brewer open pit with mine waste. The primary goals of the closure are to reduce acid rock drainage and minimize or eliminate long-term operation and maintenance requirements by restoring the site property to approximate pre-mining topography. The plan calls for consolidation of approximately 200 acres of waste into approximately 20 hectares (50 acres). Much of the material to be backfilled into the pit, including spent heap leach material and waste rock, has acid-generating potential. Therefore, the backfill design integrated geochemical properties of the backfill materials with expected post-closure conditions. A prime consideration was the final position of the water table. Since mining at the site started in the early 1800`s, no records exist of the original groundwater levels. Therefore, the design incorporates a large anoxic limestone drain to control the final groundwater level. Additional amendments are to be placed in targeted areas of the backfill to maximize their utilization. A low-permeability cap system that includes a GEOSYNTHETIC clay liner has been designed to limit infiltration into the backfill.

Lewis-Russ, A.; Lupo, J.F. [Titan Environmental Corp., Englewood, CO (United States); Bronson, J.M. [Titan Environmental Corp., Tempe, AZ (United States)] [and others

1996-12-31T23:59:59.000Z

372

Selected factors influencing GCL hydraulic conductivity  

SciTech Connect (OSTI)

A series of confined swell and hydraulic conductivity tests were conducted on a needle-punched geosynthetic clay liner (GCL) with water as the hydrating medium and reference permeant. Increases in the static confining stress and the needle-punching both restricted GCL swell and contributed to lower bulk GCL void ratios and hence significantly lower hydraulic conductivity values. A well defined linear-log relationship is found between the bulk void ratio and hydraulic conductivity. The number of pore volumes of permeant flow and consequently the level of chemical equilibrium is shown to have a significant effect on the hydraulic conductivity. It is shown that there is a decrease in hydraulic conductivity for small amounts of permeant flow for all ethanol/water mixtures examined. At or near chemical equilibrium, low concentration mixtures (25 and 50% ethanol) continued to produce relative decreases in GCL hydraulic conductivity due to the increased viscosity of the permeant; however, highly concentrated mixtures (75 and 100% ethanol) produced relative increases in GCL hydraulic conductivity arising from double layer contraction. The implications are discussed.

Petrov, R.J. [Trow Consulting Engineers Ltd., Brampton, Ontario (Canada); Rowe, R.K.; Quigley, R.M. [Univ. of Western Ontario, London, Ontario (Canada)

1997-08-01T23:59:59.000Z

373

Materials for Advanced Turbine Engines (MATE). Project 3: design, fabrication and evaluation of an oxide dispersion strengthened sheet alloy combustor liner. Final Report  

SciTech Connect (OSTI)

The suitability of wrought oxide dispersion strengthened (ODS) superalloy sheet for gas turbine engine combustor applications was evaluated. Incoloy MA 956 (FeCrAl base) and Haynes Developmental Alloy (HDA) 8077 (NiCrAl base) were evaluated. Preliminary tests showed both alloys to be potentially viable combustor materials, with neither alloy exhibiting a significant advantage over the other. Both alloys demonstrated a +167C (300 F) advantage of creep and oxidation resistance with no improvement in thermal fatigue capability compared to a current generation combustor alloy (Hastelloy X). MA956 alloy was selected for further demonstration because it exhibited better manufacturing reproducibility than HDA8077. Additional property tests were conducted on MA956. To accommodate the limited thermal fatigue capability of ODS alloys, two segmented, mechanically attached, low strain ODS combustor design concepts having predicted fatigue lives or 10,000 engine cycles were identified. One of these was a relatively conventional louvered geometry, while the other involved a transpiration cooled configuration. A series of 10,000 cycle combustor rig tests on subscale MA956 and Hastelloy X combustor components showed no cracking, thereby confirming the beneficial effect of the segmented design on thermal fatigue capability. These tests also confirmed the superior oxidation and thermal distortion resistance of the ODS alloy. A hybrid PW2037 inner burner liner containing MA956 and Hastelloy X components was designed and constructed.

Henricks, R.J.; Sheffler, K.D.

1984-02-01T23:59:59.000Z

374

Pillared clays as superior catalysts for selective catalytic reduction of nitric oxide. Second semiannual report, 1996  

SciTech Connect (OSTI)

During the first six months of the program, the work has progressed as planned. We have constructed a reactor system and assembled all laboratory essentials for conducting the three-year project. First, the catalytic activities of the Cu(2+) ion exchanged alumina-pillared clay for the selective catalytic reduction of NO by ethylene were measured. The temperature range was 250-500{degrees}C. The activities of this catalyst were substantially higher than the catalyst that has been extensively studied in the literature, Cu-ZSM-5. Fourier Transform Infrared Spectroscopy (FTIR) was used to study the acidity of the catalyst. The second part of the work was an in-depth FTIR study of the NO decomposition mechanism on the catalyst. This was planned as the first and the key step to obtain an understanding of the reaction mechanism. Key surface intermediates were identified from the FTIR spectra, and a redox type Eley-Rideal mechanism was proposed for the NO decomposition on this catalyst. This report will be divided into two parts. In Part One, we report results on the catalytic activities of the Cu-alumina-pillared clay and a direct comparison with other known catalysts. In Part two, we focus on the FTIR study and from the results, we propose a NO decomposition mechanism on this new catalyst. Plans for the next six months include tests of different pillared clays as well as the catalytic mechanism. The micro reactor will continue to be the key equipment for measuring the catalytic activities. FTIR will continue to be the major technique for identifying surface species and hence understanding the reaction mechanism.

Yang, R.T.; Li, W.B.; Sirilumpen, M.; Tharapiwattananon, N.

1997-08-01T23:59:59.000Z

375

Remediation of a fractured clay soil contaminated with gasoline containing MTBE  

SciTech Connect (OSTI)

Gasoline and other light non-aqueous phase liquids (LNAPLs) released into fractured clay soils initially move by advection of the LNAPL through the fractures. Once advective movement of the LNAPL ceases, dissolution of the gasoline components into the pore water and diffusion into the intact blocks of clay becomes an important transport process. The aqueous-phase flux of each compound in the mixture depends in large part upon its aqueous solubility. For example, a low-solubility compound like isooctane remains primarily in the fracture in the LNAPL. A high-solubility compound, like methyl-tert-butyl ether (MTBE), dissolves readily and may move almost entirely into the clay matrix. The distribution of compounds between the matrix and the fractures will have an important impact on the rate at which the gasoline contaminated soil can be remediated. In this context, the presence of soluble additives like MTBE can significantly impact the risk and remediation time for the, soil. Beginning in 1993 a field study to examine the applicability of air flushing for remediation of low-permeability soils was sponsored by API. The study focused on a variety of soil vapor extraction (SVE) and in situ air sparging (IAS) approaches for mass removal and risk reduction. The source of gasoline contamination in this study was a release of 50 liters of a mixture containing 14 gasoline hydrocarbons ranging from pentane to naphthalene, and including MTBE. The mixture was released into the shallow subsurface and allowed to redistribute for 10 months prior to air flushing startup. Numerical modeling indicated that essentially all of the MTBE should have dissolved into the matrix. In contrast, essentially all of the isooctane should have remained in the LNAPL in the fractures.

Johnson, R.L.; Grady, D.E. [Oregon Graduate Institute, Portland, OR (United States); Walden, T. [BP Oil Europe, Brussels (Belgium)

1997-12-31T23:59:59.000Z

376

Evaluation of X-ray Diffraction of Bit Cuttings as a Proxy for Core Data in Determining Bulk Mineralogy and Clay Species, Bakken Formation, Williston Basin.  

E-Print Network [OSTI]

??The principal question addressed in this study concerns the applicability of x-ray diffractometry to determine bulk rock mineralogy and clay species in the absence of… (more)

Barnes, Stuart Lee

2011-01-01T23:59:59.000Z

377

Hydrothermal formation of Clay-Carbonate alteration assemblages in the Nili Fossae region of Mars  

E-Print Network [OSTI]

The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) has returned observations of the Nili Fossae region indicating the presence of Mg- carbonate in small (carbonate-bearing units. We applied absorption band mapping techniques to investigate a range of possible phyllosilicate and carbonate minerals that could be present in the Nili Fossae region. We also describe a clay-carbonate hydrothermal alteration mineral assemblage in the Archean Warrawoona Group of Western Australia that is a potential Earth analog to the Nili Fossae carbonate-bearing rock units. We discuss the geological and biological implications for hydrothermal processes on Noachian Mars.

Brown, Adrian J; Baldridge, Alice M; Crowley, James K; Bridges, Nathan T; Thomson, Bradley J; Marion, Giles M; Filho, Carlos R de Souza; Bishop, Janice L

2014-01-01T23:59:59.000Z

378

Soil damping constants related to common soil properties in sands and clays  

E-Print Network [OSTI]

for the Granular Materials Tested 83 V ITA 88 Vii LIST OP TABLES Table. Results of Tests on Ottawa Sand Page 22 Result. s of Tests on Arkansas Sand 23 Results of Tests on Victoria Sand 24 VI VII Error Resulting from Approximations Study of Void Ratio... Sand Nohr's Circle Diagram for Victoria Sand 65 82 N0TATION The following symbols are used in this study: CE 35 EA 62 EA 60 EA 55 EA 50 fps a viscous damping constant, Eall pit sandy clay at an approximate moisture content of 35 percent...

Gibson, Gary Clive

1968-01-01T23:59:59.000Z

379

The sensitivity of rock mechanical properties to the method by which the clay volume is determined  

E-Print Network [OSTI]

were studied. At At ~ Rv s o form with Rv by the Voigt average technique'' form n Rv ( V xRv xW form i 1 i i i ~ . (7) or with Rv by the Reuse average technique'' form n 1/Rvf $ V xWi Rvi form . . (8) Shear Wave Travel Time Model Determination...'or the degree of MASTER OF SCIENCE AUGUST 1986 Major Subject: petroleum Engineering THE SENSITIVITY OF ROCK MECHANICAL PROPERTIES TO THE METHOD BY WHICH THE CLAY VOLUME IS DETERMINED A Thesis by HENRY ALEXANDER IVEY Approved as to style and content by...

Ivey, Henry Alexander

1986-01-01T23:59:59.000Z

380

Significance of the microstructure of Pacific red clays to nuclear waste disposal  

E-Print Network [OSTI]

. Tieh (member) Richard H. Bennett (member) Rober t O. Reid (Head oi' Department) Richard Rezak (member) August 1987 ABSTRACT The Significance of' the Micr ostr uctur e of Pacif'ic Red Clays to Nuclear Waste Disposal. (August 1987) Patti Jo..., 1966) B and C:"Stepped (FF) face-to -face" (Smalley and Cabrera, 1969). V' Chain of stepped face-to- face and (EE) edge-to-edge particles (O' Brien, 1971). "Turbostratic" structure (Aylmore and Quirked 1960). /7 Figure 2, Particle r le ar...

Burkett, Patti Jo

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Clay Sell Sworn in as Deputy Secretary of Energy | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energyon ArmedWaste andAccessCO2 Injection Begins8:Energy Chu Issues CallBulletinClay

382

Deputy Secretary of Energy Clay Sell to Depart | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergy DOEDealingVehicle Battery Plant | DepartmentPreparedNuclearClay Sell

383

Clay mineralogy and depositional history of the Frio Formation in two geopressured wells, Brazoria County, Texas  

SciTech Connect (OSTI)

Twenty-three shale samples ranging in depth from 5194 ft to 13,246 ft from Gulf Oil Corporation No. 2 Texas State Lease 53034 well and 33 shale samples ranging in depth from 2185 ft to 15,592 ft from General Crude Oil Company/Department of Energy No. 1 Pleasant Bayou well were examined by x-ray techniques to determine the mineralogy of the geopressured zone in the Brazoria Fairway. Both wells have similar weight-percent trends with depth for a portion of the mineralogy. Calcite decreases, and plagioclase, quartz and total clay increase slightly. Within the clays, illite in mixed-layer illite/smectite (I/S) increases and smectite in mixed-layer I/S decreases. Four minerals have distinctly different trends with depth for each well. In the No. 2 Texas State Lease 53034 well, potassium feldspar and mixed-layer I/S decrease, kaolinite increases, and discrete illite is constant. In the No. 1 Pleasant Bayou well, potassium feldspar and kaolinite are constant, mixed-layer I/S increases, and discrete illite decreases.

Freed, R.L.

1982-01-01T23:59:59.000Z

384

The MS-Q Force Field for Clay Minerals: Application to Oil Production Sungu Hwang, Mario Blanco, Ersan Demiralp, Tahir Cagin, and William A. Goddard, III*  

E-Print Network [OSTI]

in studying oil production chemicals, including corrosion inhibitors,11 scale inhibitors,12 and dissolvers.13 and corrosion inhibition). Among the minerals present in the walls of oil reservoirs, clay minerals are believedThe MS-Q Force Field for Clay Minerals: Application to Oil Production Sungu Hwang, Mario Blanco

Ã?agin, Tahir

385

A single hardening elasto-plastic model for Kaolin clay with loading-history-dependent plastic potential function  

E-Print Network [OSTI]

A single hardening elasto-plastic model for Kaolin clay with loading-history- dependent plastic and failure criteria are found to be strongly dependent on the principal stress rotation angle () and plastic work. A unique plastic potential function determined solely by the current stress state

Prashant, Amit

386

Electrical Properties of SandClay Mixtures Containing Trichloroethylene and Ethanol Jeffery J. Roberts and Dorthe Wildenschild*  

E-Print Network [OSTI]

Electrical Properties of Sand­Clay Mixtures Containing Trichloroethylene and Ethanol Jeffery J, and as an ethanol­water mixture (80:20) was flowed through the sample. Resistivity increased by about a factor of 4 as the ethanol mixture replaced the water solution. Nondestructive x-ray imaging of the sample at various stages

Wildenschild, Dorthe

387

Running heading: Bulk density of a clayey subsoil Increase in the bulk density of a Grey Clay subsoil by  

E-Print Network [OSTI]

1 Running heading: Bulk density of a clayey subsoil Increase in the bulk density of a Grey Clay of the prisms were coated by material similar in composition to the topsoil and separated from as the profile dries over summer leading to widening of cracks between prismatic peds, (2) infilling of cracks

Boyer, Edmond

388

WRIGHT, MELANIE CLAY. The Effects of Automation on Team Performance and Team Coordination. (Under the direction of David B. Kaber).  

E-Print Network [OSTI]

ABSTRACT WRIGHT, MELANIE CLAY. The Effects of Automation on Team Performance and Team Coordination of automation in a number of work domains, including team environments. However, assessment of the effects of automation on teamwork has been primarily limited to the aviation domain (comparing early conventional

Kaber, David B.

389

Reflectance of dispersed vitrinite in shales hosting PbZnCu ore deposits in western Cuba: comparison with clay crystallinity  

E-Print Network [OSTI]

: comparison with clay crystallinity J. Barry Maynard a,*, Erika R. Elswick b , James C. Hower c a Department: maynarjb@uc.edu (J.B. Maynard), eelswick@indiana.edu (E.R. Elswick), hower@caer.uky.edu (J.C. Hower). www

Maynard, J. Barry

390

Stable isotope geochemistry of sulfur bearing minerals and clay mineralogy of some soils and sediments in Loot Desert, central Iran  

E-Print Network [OSTI]

and sediments in Loot Desert, central Iran M.H. Farpoor a, , H.R. Krouse b a Soil Sci. Dept., Faculty of Agriculture, Shahid Bahonar Univ. of Kerman, Kerman, Iran b Department of Physics and Astronomy, the Univ technique and clay mineralogy were studied in different landforms in Loot Desert, central Iran. Four

Ahmad, Sajjad

391

Shrinkage of microaggregates in Brazilian Latosols during drying: significance of the clay content, mineralogy and hydric stress history  

E-Print Network [OSTI]

content, mineralogy and hydric stress history A. REATTOa,b , A. BRUANDb , E. M. SILVAa , R. GUÉGANb , I in their particle size distribution and mineralogical composition according to insu-00414419,version1-9Sep2009 to the clay content. Consequently, the mineralogy of the

Paris-Sud XI, Université de

392

99 Blackwell Publishing Ltd, Geology Today,Vol. 24, No. 3, MayJune 2008 Clay as sealing material in  

E-Print Network [OSTI]

99© Blackwell Publishing Ltd, Geology Today,Vol. 24, No. 3, May­June 2008 FEATURE Feature Clay of the initial uranium or plutonium fuel and the products of their decay. The radioactivity of this mixture for at least a hundred thousand years, when its radioactivity will reach that of natural uranium. The most

Kammer, Thomas

393

PILLARED CLAYS AS SUPERIOR CATALYSTS FOR SELECTIVE CATALYTIC REDUCTION OF NITRIC OXIDE  

SciTech Connect (OSTI)

Removal of NO{sub x} (NO + NO{sub 2}) from exhaust gases is a challenging subject. V{sub 2}O{sub 5}-based catalysts are commercial catalysts for selective catalytic reduction (SCR) with NH{sub 3} for stationary sources. However, for diesel and lean-burn gasoline engines in vehicles, hydrocarbons would be the preferred reducing agents over NH{sub 3} because of the practical problems associated with the use of NH{sub 3} (i.e., handling and slippage through the reactor). The noble-metal three-way catalysts are not effective under these conditions. The first catalyst found to be active for selective catalytic reduction of NO by hydrocarbons in the presence of excess oxygen was copper exchanged ZSM-5 and other zeolites, reported in 1990 by Iwamoto in Japan and Held et al. in Germany. Although Cu-ZSM-5 is very active and the most intensively studied catalyst, it suffers from severe deactivation in engine tests, mainly due to H{sub 2}O and SO{sub 2}. In this project, we found that ion-exchanged pillared clays and MCM-41 catalysts showed superior SCR activities of NO with hydrocarbon. All Cu{sup 2+}-exchanged pillared clays showed higher SCR activities than Cu-ZSM-5 reported in the literature. In particular, H{sub 2}O and SO{sub 2} only slightly deactivated the SCR activity of Cu-TiO{sub 2}-PILC, whereas severe deactivation was observed for Cu-ZSM-5. Moreover, Pt/MCM-41 provided the highest specific NO reduction rates as compared with other Pt doped catalysts, i.e., Pt/Al{sub 2}O{sub 3}, Pt/SiO{sub 2} and Pt/ZSM-5. The Pt/MCM-41 catalyst also showed a good stability in the presence of H{sub 2}O and SO{sub 2}.

R.Q. Long; N. Tharappiwattananon; W.B. Li; R.T. Yang

2000-09-01T23:59:59.000Z

394

The electrorheology of suspensions consisting of Na-Fluorohectorite synthetic clay particles in silicon oil  

E-Print Network [OSTI]

Under application of an electric field greater than a triggering electric field $E_c \\sim 0.4$ kV/mm, suspensions obtained by dispersing particles of the synthetic clay fluoro-hectorite in a silicon oil, aggregate into chain- and/or column-like structures parallel to the applied electric field. This micro-structuring results in a transition in the suspensions' rheological behavior, from a Newtonian-like behavior to a shear-thinning rheology with a significant yield stress. This behavior is studied as a function of particle volume fraction and strength of the applied electric field, $E$. The steady shear flow curves are observed to scale onto a master curve with respect to $E$, in a manner similar to what was recently found for suspensions of laponite clay [42]. In the case of Na-fluorohectorite, the corresponding dynamic yield stress is demonstrated to scale with respect to $E$ as a power law with an exponent $\\alpha \\sim 1.93$, while the static yield stress inferred from constant shear stress tests exhibits a similar behavior with $\\alpha \\sim 1.58$. The suspensions are also studied in the framework of thixotropic fluids: the bifurcation in the rheology behavior when letting the system flow and evolve under a constant applied shear stress is characterized, and a bifurcation yield stress, estimated as the applied shear stress at which viscosity bifurcation occurs, is measured to scale as $E^\\alpha$ with $\\alpha \\sim 0.5$ to 0.6. All measured yield stresses increase with the particle fraction $\\Phi$ of the suspension. For the static yield stress, a scaling law $\\Phi^\\beta$, with $\\beta = 0.54$, is found. The results are found to be reasonably consistent with each other. Their similarities with-, and discrepancies to- results obtained on laponite-oil suspensions are discussed.

Y. Méheust; K. P. S. Parmar; B. Schjelderupsen; J. O. Fossum

2010-02-01T23:59:59.000Z

395

Values of Mineral Modulus of Clay Manika Prasad, Ronny Hofmann, Mike Batzle, Colorado School of Mines; M. Kopycinska-Mller, U. Rabe, and  

E-Print Network [OSTI]

of the atomic force microscope (AFM) technique and its principles are described in details elsewhere (Rabe et associated with elastic properties measurements of clay minerals with standard pulse transmission techniques

396

An investigation of the effects of projectile length and nose shape on projectile penetration into a low compressibility Kaolin Clay  

E-Print Network [OSTI]

fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1970 Major Subjert Civil Engineering A? INVESTIGATION OF TEE EFFECTS OP PROJECTILE LEECTH AED EOSE SHAPE OW PROJECTXLE PEBETEATXOE INTO A LOW COMPRESSIEILITY KAOLIE CLAY' A Thesis... committee. A special token of appreciation is due Dr. C. H. Samson, Head of the Department of Civil Engineering, who made it possible for the author to attend Texas ASM University. Mr. Ronald Boggess rendered invaluable assistance in the development...

Murff, James Donald

1970-01-01T23:59:59.000Z

397

Geohydromechanical Processes in the Excavation Damaged Zone in Crystalline Rock, Rock Salt, and Indurated and Plastic Clays  

SciTech Connect (OSTI)

The creation of an excavation disturbed zone or excavation damaged zone is expected around all man-made openings in geologic formations. Macro- and micro-fracturing, and in general a redistribution of in situ stresses and rearrangement of rock structures, will occur in this zone, resulting in drastic changes of permeability to flow, mainly through the fractures and cracks induced by excavation. Such an EDZ may have significant implications for the operation and long-term performance of an underground nuclear waste repository. Various issues of concern need to be evaluated, such as processes creating fractures in the excavation damaged zone, the degree of permeability increase, and the potential for sealing or healing (with permeability reduction) in the zone. In recent years, efforts along these lines have been made for a potential repository in four rock types-crystalline rock, salt, indurated clay, and plastic clay-and these efforts have involved field, laboratory, and theoretical studies. The present work involves a synthesis of the ideas and issues that emerged from presentations and discussions on EDZ in these four rock types at a CLUSTER Conference and Workshop held in Luxembourg in November, 2003. First, definitions of excavation disturbed and excavation damaged zones are proposed. Then, an approach is suggested for the synthesis and intercomparison of geohydromechanical processes in the EDZ for the four rock types (crystalline rock, salt, indurated clay, and plastic clay). Comparison tables of relevant processes, associated factors, and modeling and testing techniques are developed. A discussion of the general state-of-the-art and outstanding issues are also presented. A substantial bibliography of relevant papers on the subject is supplied at the end of the paper.

Tsang, Chin-Fu; Bernier, Frederic; Davies, Christophe

2004-06-20T23:59:59.000Z

398

Capillary suction-time tests on selected clays and shales. Master's thesis  

SciTech Connect (OSTI)

Shale stability has been an ongoing problem in the drilling of oil wells. The Capillary Suction Time test is simple and easy to use, allowing operators to conduct the test at the rigsite. However because of difficulty in reproducing results, the test should be used only qualitatively. The CST, along with the Methylene Blue, Specific Surface Area and Ensilin tests, accurately predicts shale swelling and dispersion. The tests have the added advantage of being able to be conducted relatively quickly. These tests could be carried out at the rigsite while the drilling is taking place. The experiments conducted also demonstrated the usefulness of KCL as an inhibitor of shale swelling and dispersion. From the CST data, it can be seen that KCL concentrations as low as 0.5% are effective in controlling the swelling of Phillips Ekofisk, Phillips Andrews County, Texaco Mississippi Canyon and Pierre Texaco. However a greater concentration of KCL is required to inhibit the swelling of Gold Seal Bentonite, Standard Arizona, Standard Wyoming and Standard Texas. It is recommended that more concentrations of KCL be tested of the high swelling clays to determine the minimum concentration required to inhibit swelling and dispersion.

Hart, K.M.

1989-05-01T23:59:59.000Z

399

Recycling non-hazardous industrial wastes and petroleum contaminated soils into structural clay ceramics  

SciTech Connect (OSTI)

Cherokee Environmental Group (CEG)--a subsidiary of the Cherokee Sanford Group, Inc. (CSG)--has developed a system to beneficially reuse non-hazardous industrial wastes and petroleum contaminated soils into the recycling process of CSG`s structural clay ceramics manufacturing operation. The wastes and soils are processed, screened, and blended with brickmaking raw materials. The resulting material is formed and fired in such a way that the bricks still exceed American Society for Testing and Materials (ASTM) quality standards. Prior to usage, recycled materials are rigorously tested for ceramic compatibility and environmental compliance. Ceramic testing includes strength, shrinkage, and aesthetics. Environmental compliance is insured by testing for both organic and inorganic constituents. This recycling process has been fully permitted by all required state regulatory agencies in North Carolina, Maryland, and South Carolina where facilities are located. This inter-industrial synergy has eliminated landfill reliance and liability for many companies and property owners. The recycling volume of wastes and soils is high because CSG is one of the largest brick manufacturers in the nation. Together, CEG and CSG have eliminated more than 1 billion pounds of material from landfills by beneficially reusing the non-hazardous wastes.

MacRunnels, Z.D.; Miller, H.B. Jr. [Cherokee Environmental Group, Sanford, NC (United States)

1994-12-31T23:59:59.000Z

400

POLYPHENYLENESULFIED/MONTOMORILLONITE CLAY NANOCOMPOSITE COATINGS: THEIR EFFICACY IN PROTECTING STEEL AGAINST CORROSION.  

SciTech Connect (OSTI)

Nanoscale montomorillonite (MMT) clay fillers became dispersed in a polyphenylenesulfied (PPS) matrix through the processes of octadecylamine (ODA) intercalation {yields} molten PPS co-intercalation {yields} exfoliation. Cooling this molten exfoliated material led to the formation of a PPS/MMT nanocomposite. The MMT nanofiller conferred three advanced properties on the semi-crystalline PPS: First, it raised its melting point by nearly 40 C to 290 C; second, it increased its crystallization energy, implying that an excellent adherence of the nanofillers surfaces to PPS in terms of a good interfacial bond; and, third, it abated the degree of its hydrothermal oxidation due to sulfide {yields} sulfite linkage transformations. When this advanced PPS nanocomposite was used as a corrosion-preventing coating for carbon steel in a simulated geothermal environment at 300 C, a coating of {approx}150 {micro}m thickness adequately protected the steel against hot brine-caused corrosion. In contrast, an MMT-free PPS coating of similar thickness was not nearly as effective in mitigating corrosion as was the nanocompsite; in fact, the uptake of corrosive ionic electrolyte by the unmodified coating increased with an extending exposure time.

SUGAMA, T.; GAWLIK, K.

2006-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Case studies of the potential effects of carbon taxation on the stone, clay, and glass industry  

SciTech Connect (OSTI)

This case study focuses on the potential for a carbon tax ($25 and $100 per metric ton of carbon) to reduce energy use and associated carbon dioxide (CO[sub 2]) emissions in three subsectors of the stone, clay, and glass industry: hydraulic cement, glass and glass products, and other products. A conservation supply curve analysis found that (1) opportunities for reducing fossil fuel use in the subsectors are limited (15% reduction under $100 tax) and (2) the relationship between the tax and reduced CO[sub 2] emissions is nonlinear and diminishing. Because cement manufacturing produces a significant amount of CO[sub 2], this subsector was analyzed. A plant-level analysis found more opportunities to mitigate CO[sub 2] emissions; under a $100 tax, fossil fuel use would decrease 52%. (A conservative estimate lies between 15% and 52%). It also confirmed the nonlinear relationship, suggesting significant benefits could result from small taxes (32% reduction under $25 tax). A fuel share analysis found the cement industry could reduce carbon loading 11% under a $100 tax if gas were substituted for coal. Under a $100 tax, cement demand would decrease 17% and its price would increase 32%, a substantial increase for a material commodity. Overall, CO[sub 2] emissions from cement manufacturing would decrease 24--33% under a $100 tax and 10--18% under a $25 tax. Much of the decrease would result from the reduced demand for cement.

Bock, M.J.; Boyd, G.A. (Argonne National Lab., IL (United States). Environmental Assessment and Information Sciences Div.); Rosenbaum, D.I. (Nebraska Univ., Lincoln, NE (United States). Dept. of Economics); Ross, M.H. (Michigan Univ., Ann Arbor, MI (United States). Dept. of Physics)

1992-12-01T23:59:59.000Z

402

Case studies of the potential effects of carbon taxation on the stone, clay, and glass industry  

SciTech Connect (OSTI)

This case study focuses on the potential for a carbon tax ($25 and $100 per metric ton of carbon) to reduce energy use and associated carbon dioxide (CO{sub 2}) emissions in three subsectors of the stone, clay, and glass industry: hydraulic cement, glass and glass products, and other products. A conservation supply curve analysis found that (1) opportunities for reducing fossil fuel use in the subsectors are limited (15% reduction under $100 tax) and (2) the relationship between the tax and reduced CO{sub 2} emissions is nonlinear and diminishing. Because cement manufacturing produces a significant amount of CO{sub 2}, this subsector was analyzed. A plant-level analysis found more opportunities to mitigate CO{sub 2} emissions; under a $100 tax, fossil fuel use would decrease 52%. (A conservative estimate lies between 15% and 52%). It also confirmed the nonlinear relationship, suggesting significant benefits could result from small taxes (32% reduction under $25 tax). A fuel share analysis found the cement industry could reduce carbon loading 11% under a $100 tax if gas were substituted for coal. Under a $100 tax, cement demand would decrease 17% and its price would increase 32%, a substantial increase for a material commodity. Overall, CO{sub 2} emissions from cement manufacturing would decrease 24--33% under a $100 tax and 10--18% under a $25 tax. Much of the decrease would result from the reduced demand for cement.

Bock, M.J.; Boyd, G.A. [Argonne National Lab., IL (United States). Environmental Assessment and Information Sciences Div.; Rosenbaum, D.I. [Nebraska Univ., Lincoln, NE (United States). Dept. of Economics; Ross, M.H. [Michigan Univ., Ann Arbor, MI (United States). Dept. of Physics

1992-12-01T23:59:59.000Z

403

Fate of corrosion products released from stainless steel in marine sediments and seawater. Part 1. Northeast Pacific pelagic red clay  

SciTech Connect (OSTI)

To provide information useful for determining the biogeochemical cycling of corrosion products in the benthic boundary layer of the deep ocean, neutron-activated stainless steel was exposed to seawater and to Northeast Pacific red clay under aerobic and non-oxygenated conditions. This report describes the trace metal geochemistry of the sediment and the chemical speciation of the corrosion products. The sediments generally consisted of reddish-brown clay at the surface grading to a dark-brown transition zone below which mottled olive-gray clay prevailed. Neutron-irradiated 347 stainless steel specimens were exposed to seawater and sediment slurry under aerobic and non-oxygenated conditions for 108 days. The presence of aerated sediment more than doubled the amount of corrosion products released compared to aerated seawater and non-oxygenated sediment treatments. The distribution of /sup 60/Co released from the stainless steel exposed to aerated seawater show that almost 70% of /sup 60/Co activity became associated with suspended particulate matter. No detectable /sup 60/Co activity was present in the soluble, readily dissolved, or inorganic or weakly complexed fractions of aerated sediment which had been used to treat neutron-activated stainless steel. Almost 50% of the /sup 60/Co activity was extracted in the combined soluble, easily dissolved, adsorbed, and organically complexed fractions from the non-oxygenated sediment treatment indicating that this much of the corrosion products may be initially released in ionic form.

Schmidt, R.L.

1982-03-01T23:59:59.000Z

404

(Data in thousand metric tons, unless otherwise noted) Domestic Production and Use: In 2002, clay and shale production was reported in all States except Alaska,  

E-Print Network [OSTI]

to be as follows: ball clay--35% floor and wall tile, 22% sanitaryware, and 43% other uses; bentonite--28% pet for consumption: Artificially activated clay and earth 19 17 18 21 20 Kaolin 53 57 63 114 155 Other 14 16 16 13 49, not elsewhere classified 432 329 357 344 464 Total3 5,230 4,800 5,260 4,970 4,990 Consumption, apparent 36

405

(Data in thousand metric tons, unless otherwise noted) Domestic Production and Use: In 2003, clay and shale production was reported in all States except Alaska,  

E-Print Network [OSTI]

; bentonite-- 25% pet waste absorbent, 21% drilling mud, 21% foundry sand bond, 15% iron ore pelletizing,300 Imports for consumption: Artificially activated clay and earth 17 18 21 27 20 Kaolin 57 63 114 158 275,980 Consumption, apparent 37,500 35,600 34,800 34,600 34,600 Price, average, dollars per ton: Ball clay 40 42 42

406

Response of rice to ammonium and nitrate nitrogen applied at various stages of plant growth on limed and unlimed Beaumont and Lake Charles clays  

E-Print Network [OSTI]

RESPONSE OF RICE TO AMMONIUM AND NITRATE NITROGEN APPLIED AT VARIOUS STAGES OF PLANT GROWTH ON LIMED AND UNLINED BEAUNONT AND LAKE CHARLES CLAYS A Thesis By William B. Gay, III Submitted to the Graduate Sohool of the Agricultural... BEAUMONT AND LAKE CHARLES CLAYS A Thesis By Nilliam B. Gay, III Chairman of Committee Head of the Department of Soil Sc Crop Sciences ACKNOWLEDGEMENTS I would like to express my appreciation to Dr. A. G. Caldwell for his 1nterest and guidance...

Gay, William Blalock, III

1962-01-01T23:59:59.000Z

407

Iron oxide and chromia supported on titania-pillared clay for selective catalytic reduction of nitric oxide with ammonia  

SciTech Connect (OSTI)

TiO{sub 2}-pillard clay (PILC) with high surface area, large pore volume, and large interlayer spacing was used as the support for mixed Fe{sub 2}O{sub 3} and Cr{sub 2}O{sub 3} as the catalyst for selective catalytic reduction (SCR) of NO with NH{sub 3}. The Fe/Cr ratio was varied at a fixed total amount of oxide dopant of 10% (wt). The Fe-Cr/TiO{sub 2}-PILC with Fe/Cr=3 showed the highest activity. Compared with commercial V{sub 2}O{sub 5}/TiO{sub 2} catalysts, the activity (on a per gram basis) of the doped pillared clay was approximately twice as high under H{sub 2}O- and SO{sub 2}-free conditions and was approximately 40% higher under conditions with H{sub 2}O and SO{sub 2}. In addition, its activity for SO{sub 2} oxidation was only 20%-25% of that of the V{sub 2}O{sub 5}-based catalysts. TPD of NH{sub 3} on the Fe-Cr/TiO{sub 2}-PILC catalyst showed that both M=O and M-OH (M=Fe or Cr) were necessary for the SCR reaction. In situ IR spectra of NH{sub 3} showed that there was a higher Bronsted acidity than the Lewis acidity on the surface under reaction conditions and that there existed a direct correlation between the SCR activity and the Bronsted acidity among pillared clays with different Fe/Cr ratios. These results, along with the transient response to O{sub 2}, indicated that a similar mechanism to that on the V{sub 2}O{sub 5} catalyst was operative. The TiO{sub 2}-pillared clay used as the support also contributed to the high activity of the Fe-Cr catalyst. The TiO{sub 2} pillars combined with the tetrahedral SiO{sub 2} surfaces of the clay apparently gave rise to a high dispersion of Fe{sub 2}O{sub 3}. 52 refs., 10 figs., 5 tabs.

Cheng, L.S.; Yang, R.T. [State Univ. of New York, Buffalo, NY (United States)] [State Univ. of New York, Buffalo, NY (United States); Ning Chen [Univ. of Michigan, Ann Arbor, MI (United States)] [Univ. of Michigan, Ann Arbor, MI (United States)

1996-11-01T23:59:59.000Z

408

Structural evaluation of WIPP disposal room raised to Clay Seam G.  

SciTech Connect (OSTI)

An error was discovered in the ALGEBBRA script used to calculate the disturbed rock zone around the disposal room and the shear failure zone in the anhydrite layers in the original version. To correct the error, a memorandum of correction was submitted according to the Waste Isolation Pilot Plant (WIPP) Quality Assurance program. The recommended course of action was to correct the error, to repeat the post-process, and to rewrite Section 7.4, 7.5, 8, and Appendix B in the original report. The sections and appendix revised by the post-process using the corrected ALGEBRA scripts are provided in this revision. The original report summarizes a series of structural calculations that examine effects of raising the WIPP repository horizon from the original design level upward 2.43 meters. Calculations were then repeated for grid changes appropriate for the new horizon raised to Clay Seam G. Results are presented in three main areas: (1) Disposal room porosity, (2) Disturbed rock zone characteristics, and (3) Anhydrite marker bed failure. No change to the porosity surface for the compliance re-certification application is necessary to account for raising the repository horizon, because the new porosity surface is essentially identical. The disturbed rock zone evolution and devolution are charted in terms of a stress invariant criterion over the regulatory period. This model shows that the propagation of the DRZ into the surrounding rock salt does not penetrate through MB 139 in the case of both the original horizon and the raised room. Damaged salt would be expected to heal in nominally 150 years. The shear failure does not occur in either the upper or lower anhydrite layers at the moment of excavation, but appears above and below the middle of the pillar one day after the excavation. The damaged anhydrite is not expected to heal as the salt in the DRZ is expected to.

Park, Byoung Yoon (Sandia National Laboratories, Carlsbad, NM); Holland, John F. (Sandia National Laboratories, Albuquerque, NM)

2007-09-01T23:59:59.000Z

409

Design of the Long-term Waste Management Facility for Historic LLRW Port Hope Project - 13322  

SciTech Connect (OSTI)

The Municipality of Port Hope is located on the northern shores of Lake Ontario approximately 100 km east of Toronto, Ontario, Canada. Starting in the 1930's, radium and later uranium processing by Eldorado Gold Mines Limited (subsequently Eldorado Nuclear Limited) (Eldorado) at their refinery in Port Hope resulted in the generation of process residues and wastes that were disposed of indiscriminately throughout the Municipality until about the mid-1950's. These process residues contained radium (Ra- 226), uranium, arsenic and other contaminants. Between 1944 and 1988, Eldorado was a Federal Crown Corporation, and as such, the Canadian Federal Government has assumed responsibility for the clean-up and long-term management of the historic waste produced by Eldorado during this period. The Port Hope Project involves the construction and development of a new long-term waste management facility (LTWMF), and the remediation and transfer of the historic wastes located within the Municipality of Port Hope to the new LTWMF. The new LTWMF will consist of an engineered above-ground containment mound designed to contain and isolate the wastes from the surrounding environment for the next several hundred years. The design of the engineered containment mound consists of a primary and secondary composite base liner system and composite final cover system, made up of both natural materials (e.g., compacted clay, granular materials) and synthetic materials (e.g., geo-synthetic clay liner, geo-membrane, geo-textiles). The engineered containment mound will cover an area of approximately 13 hectares and will contain the estimated 1.2 million cubic metres of waste that will be generated from the remedial activities within Port Hope. The LTWMF will also include infrastructure and support facilities such as access roads, administrative offices, laboratory, equipment and personnel decontamination facilities, waste water treatment plant and other ancillary facilities. Preliminary construction activities for the Port Hope LTWMF commenced in 2012 and are scheduled to continue over the next few years. The first cell of the engineered containment mound is scheduled to be constructed in 2015 with waste placement into the Port Hope LTWMF anticipated over the following seven year period. (authors)

Campbell, Don; Barton, David [Conestoga-Rovers and Associates, 651 Colby Drive, Waterloo, Ontario N2V 1C2 (Canada)] [Conestoga-Rovers and Associates, 651 Colby Drive, Waterloo, Ontario N2V 1C2 (Canada); Case, Glenn [Atomic Energy of Canada Limited, 115 Toronto Road, Port Hope, Ontario L1A 3S4 (Canada)] [Atomic Energy of Canada Limited, 115 Toronto Road, Port Hope, Ontario L1A 3S4 (Canada)

2013-07-01T23:59:59.000Z

410

A review of "Bernini: Sculpting in Clay" by C.D. Dickerson III, Anthony Sigel, and Ian Wardropper  

E-Print Network [OSTI]

engrossing and useful in further research. C. D. Dickerson III, Anthony Sigel, and Ian Wardropper, Bernini: Sculpting in Clay. New Haven: Yale University Press, 2012, 416pp. + 437 color, 35 b/w ills. $65.00. Review by #30;#28;#25;#25;#26; #21... the objects of scienti#15;c techni- cal examination by the third collaborator, Anthony Sigel, published in the Harvard University Art Museum Bulletin (1999). European lend- ers then o#12;ered generous examples?not only from major museums across Italy...

Silver, Larry

2013-01-01T23:59:59.000Z

411

Proportions of coarse and fine clay across the Cretaceous-Tertiary boundary in Milam, Falls, and Travis Counties, Texas  

E-Print Network [OSTI]

and are of little value. It is concluded that the method proposed in this thesis is capable of detecting small differences between clay sampi es at a = ingle locai ity, but prob. bly cannot be used to correlate samples f'rom one locality to another. i&1tlloagh... making dispersion and I'rac- tionation difficult. The efficiency of the X-ray diffraction t, echniques is also improved when these constituents are removed. As a simplified means of comp:rison, the various procedures performed on each sample...

Smith, John Charles

1966-01-01T23:59:59.000Z

412

Availability of soil organic phosphorus and fertilizer phosphorus applied to coastal bermudagrass (cynodon dactylon l.) on Houston black clay  

E-Print Network [OSTI]

) for different tillage-P treatments during 1976. Mean available P (using 1. 4N NH40Ac extract solution) for different tillage-P treatments during 1976. 46 52 54 61 64 69 70 INTRODUCTION A gradual decline in the annual forage production of recently... con- stitutes the. greatest proportion of the total P in many soils. Supak (1969) found that 46/ of the total P in the check p'lot in a Houston Black clay was organic P. Organic Phosphorus Organic P generally constitutes about 25-75K of the total...

Krautmann, Jolly Yang

1978-01-01T23:59:59.000Z

413

Biomass/energy crops grown on phosphatic clay in central Florida  

SciTech Connect (OSTI)

In January 1992 plots of 0.081 ha (0.2 A) were planted on phosphatic clay soil. Cultivars included: US78-1009, and CP72-1210 sugarcane; US56-9, L79-1002, and US72-1153 energycane; 1K-7647 Erianthus; plus N-51 Elephantgrass. Enough planting material of US67-2022 sugarcane was available to plant only 10 m (33 ft.) of row. Planting of US67-2022 was increased each of the next 2 years. Three-year average dry yield of sugarcane was 32.3 Mg ha{sup -1} (14.4 ton A{sup -1}) for US78-1009, 29.6 Mg ha{sup -1} (1 3.2 ton A{sup -1}) for CP72-1210, and 49.1 Mg ha{sup -1} (21.9 ton A{sup -1}) for US67-2022. Two-year average yield for energycane was observed to be 36.5 Mg ha{sup -1} (16.3 ton A{sup -1}) for US56-9, 34.9 Mg ha{sup -1} (15.6 ton A{sup -1}) for L79-1002, and 37.2 Mg ha{sup -1} (16.6 ton A{sup -1}) for US72-1153. The observed Erianthus yield was 17.9 Mg ha{sup -1} (8.0 ton A{sup -1}) for 1K-7647 and for N-51 Elephantgrass was 19.0 Mg ha{sup -1} (8.5 ton A{sup -1}). Yield of both Erianthus and elephantgrass were severely hampered by a poor stand. Other cultivars were also affected but to a lesser degree. Sugar content was highest in the three sugarcane cultivars averaging 13.1 degrees brix. Energycane cultivars had an average of 8.6 degrees brix; elephantgrass and Erianthus were lowest with 5.5 and 5.6{degrees} brix, respectively. Sugar yield was highest in US67-2022 at 12.3 Mg ha{sup -1} (5.5 ton A{sup -1}) and more than 2.5 times higher than the next highest cultivar. Chemical composition of the various cultivars in terms of NDF, ADF, hemicellulose, cellulose, lignin, and in vitro digestible dry matter are also reported.

Stricker, J.A.; Prine, G.M. [UF Agronomy Dept., Gainesville, FL (United States); Anderson, D.L. [UF Everglades REC, Belle Glade, FL (United States)] [and others

1996-12-31T23:59:59.000Z

414

Corrective Action Plan for Corrective Action Unit 417: Central Nevada Test Area Surface, Nevada  

SciTech Connect (OSTI)

This Corrective Action Plan provides methods for implementing the approved corrective action alternative as provided in the Corrective Action Decision Document for the Central Nevada Test Area (CNTA), Corrective Action Unit (CAU) 417 (DOE/NV, 1999). The CNTA is located in the Hot Creek Valley in Nye County, Nevada, approximately 137 kilometers (85 miles) northeast of Tonopah, Nevada. The CNTA consists of three separate land withdrawal areas commonly referred to as UC-1, UC-3, and UC-4, all of which are accessible to the public. CAU 417 consists of 34 Corrective Action Sites (CASs). Results of the investigation activities completed in 1998 are presented in Appendix D of the Corrective Action Decision Document (DOE/NV, 1999). According to the results, the only Constituent of Concern at the CNTA is total petroleum hydrocarbons (TPH). Of the 34 CASs, corrective action was proposed for 16 sites in 13 CASs. In fiscal year 1999, a Phase I Work Plan was prepared for the construction of a cover on the UC-4 Mud Pit C to gather information on cover constructibility and to perform site management activities. With Nevada Division of Environmental Protection concurrence, the Phase I field activities began in August 1999. A multi-layered cover using a Geosynthetic Clay Liner as an infiltration barrier was constructed over the UC-4 Mud Pit. Some TPH impacted material was relocated, concrete monuments were installed at nine sites, signs warning of site conditions were posted at seven sites, and subsidence markers were installed on the UC-4 Mud Pit C cover. Results from the field activities indicated that the UC-4 Mud Pit C cover design was constructable and could be used at the UC-1 Central Mud Pit (CMP). However, because of the size of the UC-1 CMP this design would be extremely costly. An alternative cover design, a vegetated cover, is proposed for the UC-1 CMP.

K. Campbell

2000-04-01T23:59:59.000Z

415

Can Next-Generation Reactors Power a Safe Nuclear Futur By Clay Dillow Posted 03.17.2011 at 12:18 pm  

E-Print Network [OSTI]

Can Next-Generation Reactors Power a Safe Nuclear Futur By Clay Dillow Posted 03.17.2011 at 12 of nuclear reactors are designed to prevent exactly what we old Fukushima Daiichi plant. Which is good the world rush to reconsider their nuclear plans, nuclear experts look toward a future of smaller, safer

Danon, Yaron

416

Houlsby, G. T., Kelly, R. B., Huxtable, J. & Byrne, B. W. (2005). Geotechnique 55, No. 4, 287296 Field trials of suction caissons in clay for offshore wind turbine  

E-Print Network [OSTI]

Houlsby, G. T., Kelly, R. B., Huxtable, J. & Byrne, B. W. (2005). Ge´otechnique 55, No. 4, 287. B. KELLY*, J. HUXTABLE and B. W. BYRNE* A programme of testing of caisson foundations in clay-scale model testing (Byrne & Houlsby, 2002, 2004; Byrne et al., 2003; Kelly et al., 2003, 2004

Byrne, Byron

417

Chapter 9. Utilizing mineralogical and chemical information in PTFs (A. Bruand) Soil structure is known to reflect mineralogical composition of clay fraction and soil  

E-Print Network [OSTI]

Chapter 9. Utilizing mineralogical and chemical information in PTFs (A. Bruand) Soil structure is known to reflect mineralogical composition of clay fraction and soil chemical composition. Because soil hydraulic properties are likely to depend on soil structure, chemical and mineralogical composition have

Paris-Sud XI, Université de

418

3.1 $?$m H$_{2}$O Ice Absorption in LINER-Type Ultraluminous Infrared Galaxies with Cool Far-Infrared Colors: the Centrally-Concentrated Nature of Their Deeply Buried Energy Sources  

E-Print Network [OSTI]

Ground-based 2.8--4.1 $\\mu$m slit spectra of the nuclei of seven ultraluminous infrared galaxies (ULIRGs) that are classified optically as LINERs and have cool far-infrared colors are presented. All the nuclei show 3.3 $\\mu$m polycyclic aromatic hydrocarbon (PAH) emission, with equivalent widths that are systematically lower than those in starburst galaxies. Strong 3.1 $\\mu$m H$_{2}$O ice absorption, with optical depth greater than 0.6, is also detected in five nuclei, and 3.4 $\\mu$m carbonaceous dust absorption is detected clearly in one of the five nuclei. It is quantitatively demonstrated that the large optical depths of the H$_{2}$O ice absorption in the five sources, and the 3.4 $\\mu$m absorption in one source, are incompatible with a geometry in which the energy sources are spatially mixed with dust and molecular gas, as is expected for a typical starburst, but instead require that a large amount of nuclear dust (including ice-covered grains) and molecular gas be distributed in a screen in front of the 3--4 $\\mu$m continuum-emitting sources. This geometrical requirement can naturally be met if the energy sources are more centrally concentrated than the nuclear dust and molecular gas. The low equivalent widths of the PAH emission compared to starbursts and the central concentration of the nuclear energy sources in these five ULIRGs are best explained by the presence of energetically important active galactic nuclei deeply buried in dust and molecular gas.

Masatoshi Imanishi; Philip R. Maloney

2003-02-04T23:59:59.000Z

419

Clay Cane is a New York City-based, award-winning writer and media consultant. His work covers various topics such as pop culture, sexuality, race, religion, social net-  

E-Print Network [OSTI]

covers various topics such as pop culture, sexuality, race, religion, social net- working and personal social commen- tary website, www.ClayCane. net, a 2007 and 2008 Black Weblog Awards nominee. The College

Miami, University of

420

(Data in thousand metric tons, unless otherwise noted) Domestic Production and Use: In 1998, clays were produced in most States except Alaska, Delaware, Hawaii, Idaho,  

E-Print Network [OSTI]

% foundry sand bond, 23% drilling mud, 17% pet waste absorbent, 15% iron ore pelletizing, and 9% other uses,100 43,100 42,000 43,0003 Imports for consumption 36 35 45 64 75 Exports 4,620 4,680 4,830 5,080 5,100 Consumption, apparent 37,600 38,500 38,300 37,000 38,000 Price, average, dollars per ton: Ball clay 43 46 44

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

(Data in thousand metric tons, unless otherwise noted) Domestic Production and Use: In 1997, clays were produced in most States except Alaska, Delaware, Hawaii, Rhode  

E-Print Network [OSTI]

% pet waste absorbent, and 17% drilling mud; common clay--50% brick, 27% cement, and 15% lightweight,100 43,9003 Imports for consumption 39 36 35 45 53 Exports 4,150 4,620 4,680 4,830 4,970 Consumption,900 4,900e Mill 9,000 9,000 9,000 9,000 9,000 Net import reliance as a percent of5 apparent consumption

422

Evaluation of past and future alterations in tuff at Yucca Mountain, Nevada, based on the clay mineralogy of drill cores USW G-1, G-2, and G-3  

SciTech Connect (OSTI)

The tuffs at Yucca Mountain in south-central Nevada are being studied by the Yucca Mountain Project (YMP) to determine their suitability for a high-level radioactive waste repository. For predictive purposes, it is important to understand the alteration history of Yucca Mountain and to know how the minerals in Yucca Mountain tuffs respond to changing conditions such as elevated temperatures. The clay mineralogy of these tuffs has been examined using x-ray powder diffraction, and approximation temperatures of alteration have been determined using available clay mineral data and fluid inclusion analyses. Also, several illites from drill holes USW G-1 and G-2 have been dated using K/Ar techniques, yielding ages of about 11 Myr. The clay mineral in Yucca Mountain tuffs are predominantly interstratified illite/smectites, with minor amounts of chloride, kaolinite, and interstratified chlorite/smectite at depth in USW G-1 and G-2. The reactions observed for these illite/smectites are similar to those observed in pelitic rocks. With depths, the illite/smectites transform from random interstratifications (R = 0) through ordered intermediates (R = 1) to illite in USW G-2 and to Kalkberg (R {ge} 3) interstratifications in USW G-1. The illite/smectites in USW G-3 have not significantly transformed. It appears that the illites in deeper rock results from hydrothermal and diagenetic reactions of earlier-formed smectites. These data demonstrate that the rocks at depth in the northern end of Yucca Mountain were significantly altered about 11 Myr ago. Both clay mineralogy and fluid inclusions suggest that the rocks at depth in USW G-2 have been subjected to postdepositional temperatures of at least 275{degree}C, those in USW G-1 have reached 200{degree}C, and USW G-3 rocks probably have not exceeded 100{degree}C. 64 refs., 9 figs., 3 tabs.

Bish, D.L.

1989-03-01T23:59:59.000Z

423

Analysis of infiltration through a clay radon barrier at an UMTRA disposal cell. Uranium Mill Tailings Remedial Action Project  

SciTech Connect (OSTI)

An infiltration study was initiated in January 1988 to assess the percent saturation in, and infiltration through, clay radon barriers of typical Uranium Mill Tailings Remedial Action (UMTRA) Project disposal cells. Predicting infiltration through the radon barrier is necessary to evaluate whether the disposal cell will comply with the proposed US Environmental Protection Agency (EPA) groundwater protection standards (40 CFR 192). The groundwater standards require demonstrating that tailings seepage will not cause background concentrations or maximum concentration limits (MCLs) to be exceeded at the downgradient edge of the disposal facility (the point of compliance, or POC). This demonstration generally consists of incorporating the predicted seepage flux and the concentration of the specific hazardous constituents into a contaminant transport model, and predicting the resultant concentrations at the POC. The infiltration study consisted of a field investigation to evaluate moisture conditions in the radon barrier of the completed Shiprock, New Mexico, UMTRA Project disposal cell and previously completed UMTRA Project disposal cells at Clive, Utah, and Burrell, Pennsylvania. Coring was conducted to measure percent saturation profiles in the radon barriers at these disposal cells. In addition, a detailed investigation of the Shiprock radon barrier was conducted to establish the effects of meteorological stresses on moisture conditions in the filter layer and radon barrier. The Shiprock infiltration study was also intended to characterize hydraulic gradients and operational unsaturated hydraulic conductivities in the radon barrier.

Not Available

1991-01-01T23:59:59.000Z

424

Ion-exchanged pillared clays: A new class of catalysts for selective catalytic reduction of NO by hydrocarbons and by ammonia  

SciTech Connect (OSTI)

Selective catalytic reduction (SCR) of NO by NH{sub 3} is presently performed with vanadia-based catalysts for flue gas applications. Hydrocarbons would be the preferred reducing agents over NH{sub 3} because of the practical problems associated with the use of NH{sub 3} (i.e., handling and slippage through the reactor). SCR of NO by hydrocarbons can also find important applications for lean-burn (i.e., O{sub 2}-rich) gasoline and diesel engines where the noble-metal three-way catalysts are not effective in the presence of excess oxygen. Pillared interlayered clays (PILCs) have been studied extensively for a number of catalyzed reactions. We have found high activities of PILCs for SCR of NO by NH{sub 3} (26.28). Pillared clays have considerable Bronsted acidity (27, 28), and the protons can be exchanged with metal cations. The Bronsted acidity of TiO{sub 2}-PILC, in particular, remains high after heat treatment at temperatures as high as 400{degrees}C (27-29). In this note, we report first results on the activities of cation-exchanged pillared clays for SCR of NO by both hydrocarbon and NH{sub 3}. 37 refs., 3 figs.

NONE

1995-09-01T23:59:59.000Z

425

{sup 31}P NMR study of the complexation of TBP with lanthanides and actinides in solution and in a clay matrix  

SciTech Connect (OSTI)

Goal was to use NMR to study TBP/lanthanide complexes in the interlayer or on edge sites of clays. Work in this laboratory yielded details of the complexation of Eu(NO{sub 3}){sub 3} and Pr(NO{sub 3}){sub 3} with TBP in hexane solution; this information is crucial to interpretation of results of NMR studies of the complexes exchanged into clays. The solution {sup 31}P-chemical shift values were improved by repeating the studies on the lanthanide salts dissolved directly into neat TBP. NMR studies of these neat solutions of the Eu(NO{sub 3}){sub 3}{lg_bullet}3TBP-complex and the Pr(NO{sub 3}){sub 3}{lg_bullet}3TBP-complex show that the {sup 31}P chemical shift remains relatively constant for TBP: lanthanide ratios below 3: 1. At higher ratios, the chemical shift approaches that of free TBP, indicating rapid exchange of TBP between the free and complexed state. Exchange of these complexes into the clay hectorite yielded discrete {sup 31}P-NMR signals for the Eu{lg_bullet}TBP complex at -190 ppm and free TBP at -6 ppm. Adsorption of the Pr{lg_bullet}TBP complex yielded broad signals at 76 ppm for the complex and -6 ppm for free TBP. There was no evidence of exchange between the incorporated complex and the free TBP.

Hartzell, C.J. [Northern Arizona Univ., Flagstaff, AZ (United States)

1994-07-24T23:59:59.000Z

426

Long-term leaching of trace elements in a heavily sludge-amended silty clay loam soil  

SciTech Connect (OSTI)

Analysis by ICP-MS of shallow groundwater collected at a field site in New York that had been heavily loaded with sewage sludge more than 15 years earlier revealed elevated concentrations of Cu, Zn, Sr, Rb, Mo, Cd, As, Cr, Ni, Sb, W, Ag, Hg, and Sn compared with a nearby control site. Enhanced leaching of some elements from this near-neutral, fine-textured (silty clay loam) soil could be explained by exchange of soil-bound elements by components of the added sludge. For most of the heavy metals, however, increased leaching was a response to the high metal loadings in the soil, probably facilitated by higher dissolved organic matter in the leachate. Laboratory-determined distribution coefficients, K{sub D}, for the metals in newly prepared sludge/soil mixtures were lower than K{sub D} values of the field-aged sludge-treated soil, suggesting that metal mobility may have been substantially higher shortly after sludge application than many years later. Cumulative losses of certain trace elements from the topsoil have been estimated relative to Cr, a comparatively immobile element. These suggest that relative long-term losses range from 20 to 80%, with the order being: Sr, Mo, Sb {gt} Ni, Cd, Cu {gt} Zn, Ag. Generally, those elements with the smallest K{sub D} values (most soluble) measured recently in the soil had the largest loss estimates. However, present leaching loss rates are too slow to explain the estimated relative losses of several of these elements from the topsoil over the 15 or more years since sludge application.

McBride, M.B.; Richards, B.K.; Steenhuis, T.; Spiers, G.

1999-09-01T23:59:59.000Z

427

Early containment of high-alkaline solution simulating low-level radioactive waste stream in clay-bearing blended cement  

SciTech Connect (OSTI)

Portland cement blended with fly ash and attapulgite clay was mixed with high-alkaline solution simulating low-level radioactive waste stream at a one-to-one weight ratio. Mixtures were adiabatically and isothermally cured at various temperatures and analyzed for phase composition, total alkalinity, pore solution chemistry, and transport properties as measured by impedance spectroscopy. Total alkalinity is characterized by two main drops. The early one corresponds to a rapid removal of phosphorous, aluminum, sodium, and to a lesser extent potassium solution. The second drop from about 10 h to 3 days is mainly associated with the removal of aluminum, silicon, and sodium. Thereafter, the total alkalinity continues descending, but at a lower rate. All pastes display a rapid flow loss that is attributed to an early precipitation of hydrated products. Hemicarbonate appears as early as one hour after mixing and is probably followed by apatite precipitation. However, the former is unstable and decomposes at a rate that is inversely related to the curing temperature. At high temperatures, zeolite appears at about 10 h after mixing. At 30 days, the stabilized crystalline composition Includes zeolite, apatite and other minor amounts of CaCO{sub 3}, quartz, and monosulfate Impedance spectra conform with the chemical and mineralogical data. The normalized conductivity of the pastes shows an early drop, which is followed by a main decrease from about 12 h to three days. At three days, the permeability of the cement-based waste as calculated by Katz-Thompson equation is over three orders of magnitude lower than that of ordinary portland cement paste. However, a further decrease in the calculated permeability is questionable. Chemical stabilization is favorable through incorporation of waste species into apatite and zeolite.

Kruger, A.A. [Westinghouse Hanford Co., Richland, WA (United States); Olson, R.A.; Tennis, P.D. [Northwestern Univ., Evanston, IL (United States). Center for Advanced Cement-Based Materials] [and others

1995-04-01T23:59:59.000Z

428

HEADING FRONTMATTER  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

R.K.; and Bennett, J.E. (2006). Evaluating the Long-Term Performance of Geosynethic Clay Liners Exposed to Freeze-Thaw. J. Geotech. Geoenviron. Eng., 132(2), 265-268. 7. Ogunro,...

429

Design and development of a laboratory suction measuring device  

E-Print Network [OSTI]

in an and region, it loses water and cracks. Cracks decrease the performance of the clay liner as a contaminant barrier. The loss of water is due to the suction head gradient between the liner and the and region soil. In this research, a laboratory test method...

Ayhan, Serpil Rezzan

1996-01-01T23:59:59.000Z

430

Heat dissipating nuclear reactor with metal liner  

DOE Patents [OSTI]

A nuclear reactor containment including a reactor vessel disposed within a cavity with capability for complete inherent decay heat removal in the earth and surrounded by a cast steel containment member which surrounds the vessel is described in this disclosure. The member has a thick basemat in contact with metal pilings. The basemat rests on a bed of porous particulate material, into which water is fed to produce steam which is vented to the atmosphere. There is a gap between the reactor vessel and the steel containment member. The containment member holds any sodium or core debris escaping from the reactor vessel if the core melts and breaches the vessel.

Gluekler, E.L.; Hunsbedt, A.; Lazarus, J.D.

1985-11-21T23:59:59.000Z

431

Heat dissipating nuclear reactor with metal liner  

DOE Patents [OSTI]

Disclosed is a nuclear reactor containment including a reactor vessel disposed within a cavity with capability for complete inherent decay heat removal in the earth and surrounded by a cast steel containment member which surrounds the vessel. The member has a thick basemat in contact with metal pilings. The basemat rests on a bed of porous particulate material, into which water is fed to produce steam which is vented to the atmosphere. There is a gap between the reactor vessel and the steel containment member. The containment member holds any sodium or core debris escaping from the reactor vessel if the core melts and breaches the vessel.

Gluekler, Emil L. (San Jose, CA); Hunsbedt, Anstein (Los Gatos, CA); Lazarus, Jonathan D. (Sunnyvale, CA)

1987-01-01T23:59:59.000Z

432

The effect of clay catalyst on the chemical composition of bio-oil obtained by co-pyrolysis of cellulose and polyethylene  

SciTech Connect (OSTI)

Highlights: • Non-catalytic and catalytic fast pyrolysis of cellulose/polyethylene blend was carried out in a laboratory scale reactor. • Optimization of process temperature was done. • Optimization of clay catalyst type and amount for co-pyrolysis of cellulose and polyethylene was done. • The product yields and the chemical composition of bio-oil was investigated. - Abstract: Cellulose/polyethylene (CPE) mixture 3:1, w/w with and without three clay catalysts (K10 – montmorillonite K10, KSF – montmorillonite KSF, B – Bentonite) addition were subjected to pyrolysis at temperatures 400, 450 and 500 °C with heating rate of 100 °C/s to produce bio-oil with high yield. The pyrolytic oil yield was in the range of 41.3–79.5 wt% depending on the temperature, the type and the amount of catalyst. The non-catalytic fast pyrolysis at 500 °C gives the highest yield of bio-oil (79.5 wt%). The higher temperature of catalytic pyrolysis of cellulose/polyethylene mixture the higher yield of bio-oil is. Contrarily, increasing amount of montmorillonite results in significant, almost linear decrease in bio-oil yield followed by a significant increase of gas yield. The addition of clay catalysts to CPE mixture has a various influence on the distribution of bio-oil components. The addition of montmorillonite K10 to cellulose/polyethylene mixture promotes the deepest conversion of polyethylene and cellulose. Additionally, more saturated than unsaturated hydrocarbons are present in resultant bio-oils. The proportion of liquid hydrocarbons is the highest when a montmorillonite K10 is acting as a catalyst.

Solak, Agnieszka; Rutkowski, Piotr, E-mail: piotr.rutkowski@pwr.wroc.pl

2014-02-15T23:59:59.000Z

433

E-Print Network 3.0 - american geosynthetics society Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Austin Collection: Engineering ; Environmental Management and Restoration Technologies 91 UV degradation of hdpe and pvc geomembranes in laboratory exposure So Paulo State...

434

The First Pan American Geosynthetics Conference & Exhibition 2-5 March 2008, Cancun, Mexico  

E-Print Network [OSTI]

to these factors start UV degradation that is a mechanism initiated by bond scission due to the UV wavelength Degradation of Geotextiles after Weathering Exposure P.C. Lodi, Department of Civil Engineering at São Paulo-GEO, University of Texas at Austin, Austin, Texas, USA ABSTRACT UV radiation is very harmful to all

Zornberg, Jorge G.

435

Poorly Draining Soil Reinforced with Geosynthetic with in Plane Drainage: Efficiency and Pore Pressure Behavior  

E-Print Network [OSTI]

drainage system contributes to the dissipation of porous pressure when the water content of the soil test, porous pressure 1 INTRODUCTION Sustainable technologies can be defined as the use of methods of cement is to build mechanically stabilized earth walls rather than concrete walls. Conventionally, freely

Zornberg, Jorge G.

436

A comparison of fracture properties of selected geosynthetic products using pseudo strain damage theory  

E-Print Network [OSTI]

Tel it C40/17 PetroGrid 4582 Control Beam StarGrid G+PF GlasGrid 8501 Sample Identification B PD3 HC PG2 Recommended Tack Coat Rate (al ers) 0. 25 0. 20 0. 10 0. 23 None 0. 25 N/A Weight otTack Coat ( rams) 87. 6 701 35. 1 80.../12/00 7/14/00 7/12/00 7/14/00 7/21/00 7/24/00 77 5 C-9 0. 05 77 6 7/13/00 S-10 0. 25 7/20/00 7/21/00 7/31/00 77. 5 7/31/00 G-11 N/A N/A 8/03/00 8/08/00 77, 6 C-12 8/07/00 7/15/00 None N/A 8/08/00 7/18/00 8/11/00 8/01/00 77. 3 B-25 0. 25 7...

Cleveland, Gregory Scott

2001-01-01T23:59:59.000Z

437

Geosynthetic Filters for Water Quality Improvement of Urban Storm Water Runoff  

E-Print Network [OSTI]

water treatment are retention ponds, detention basins, wetland ponds, and grass swales (Strecker et al are common subsurface storm water runoff treatment systems used in urban areas. Large subsurface fil- ters the treatment system (SEMCOG 2008). Removal of filtration media such as sand is highly labor

Aydilek, Ahmet

438

Construction quality assurance report  

SciTech Connect (OSTI)

This report provides a summary of the construction quality assurance (CQA) observation and test results, including: The results of the geosynthetic and soil materials conformance testing. The observation and testing results associates with the installation of the soil liners. The observation and testing results associated with the installation of the HDPE geomembrane liner systems. The observation and testing results associated with the installation of the leachate collection and removal systems. The observation and testing results associated with the installation of the working surfaces. The observation and testing results associated with in-plant manufacturing process. Summary of submittal reviews by Golder Construction Services, Inc. The submittal and certification of the piping material specifications. The observation and verification associated of the Acceptance Test Procedure results of the operational equipment functions. Summary of the ECNs which are incorporated into the project.

Roscha, V.

1994-09-08T23:59:59.000Z

439

Whether the 3D incompressible Navier-Stokes equations can develop a finite time singularity from smooth initial data with finite energy is one of the Seven Millennium Problems posted by the Clay Mathematical Institute. We review  

E-Print Network [OSTI]

smooth initial data with finite energy is one of the Seven Millennium Problems posted by the Clay.m., Lees-Kubota Lecture Hall California Institute of Technology For information please Contact: Cheryl phenomena, fish swimming and bird flight, microorganism locomotion, geo- and bio-dynamics, mathematics

Low, Steven H.

440

Geotechnical characteristics of low-NO{sub x} fly ash when used as structural fill material  

SciTech Connect (OSTI)

The Shawville Generating Station, owned and operated by the Pennsylvania Electric Company (Penelec) a subsidiary of GPU-Genco, is located in north-central Pennsylvania, near the City of Clearfield. In 1990, Penlec was instructed by the Pennsylvania DEP (formerly PADER) to close the Shawville Ash Disposal site and to prepare a new facility meeting the requirements of the Chapter 287/288 regulations. Due to site limitations, an alternate plan was developed and approved wherein the existing facility was {open_quotes}closed{close_quotes} by placement of an approved liner system at the current grade with the {open_quotes}new{close_quotes} landfill developed immediately above. The key to this innovative technique of piggy-backing of state-of-the-art facility on top of a closed facility was the use of a multi-layered geosynthetic zone which could act as both a cap to the old site, and a liner/leachate collection system for the new facility. And a critical component of the liner/collection zone was construction of an adequate subbase for placement of the geosynthetic materials. For this facility, the logical material for use in this subbase zone was fly ash since the PADEP considered material placed prior to installation of the liner system as part of the {open_quotes} closed{close_quotes} portion of the landfill. The disposal site has been in operation since the early 1960`s when the plant was initially constructed like a dam, with well-compacted ash material placed in an arched shape and loose ash end-dumped behind that. In the mid-1980`s Penelec began placing tighter control over the placement methods and required compaction throughout. The operation of the site is discussed.

Minnear, D.G.; Phillippi, H.M.

1996-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

M-Area basin closure, Savannah River Site  

SciTech Connect (OSTI)

M-Area, on the Savannah River Site, processes raw materials and manufactures fuel and target rods for reactor use. Effluent from these processes were discharged into the M-Area settling basin and Lost Lake, a natural wetland. The closure of this basin began in 1988 and included the removal and stabilization of basin fluids, excavation of all contaminated soils from affected areas and Lost Lake, and placement of all materials in the bottom of the emptied basin. These materials were covered with a RCRA style cap, employing redundant barriers of kaolin clay and geosynthetic material. Restoration of excavated uplands and wetlands is currently underway.

McMullin, S.R.; Horvath, J.G.

1991-12-31T23:59:59.000Z

442

M-Area basin closure, Savannah River Site  

SciTech Connect (OSTI)

M-Area, on the Savannah River Site, processes raw materials and manufactures fuel and target rods for reactor use. Effluent from these processes were discharged into the M-Area settling basin and Lost Lake, a natural wetland. The closure of this basin began in 1988 and included the removal and stabilization of basin fluids, excavation of all contaminated soils from affected areas and Lost Lake, and placement of all materials in the bottom of the emptied basin. These materials were covered with a RCRA style cap, employing redundant barriers of kaolin clay and geosynthetic material. Restoration of excavated uplands and wetlands is currently underway.

McMullin, S.R.; Horvath, J.G.

1991-01-01T23:59:59.000Z

443

PROOF OF CONCEPT TEST OF A UNIQUE GASEOUS PERFLUROCARBON TRACER SYSTEM FOR VERIFICATION AND LONG TERM MONITORING OF CAPS AND COVER SYSTEMS CONDUCTED AT THE SAVANNAH RIVER SITE BENTONITE MAT TEST FACILITY.  

SciTech Connect (OSTI)

Engineered covers have been placed on top of buried/subsurface wastes to minimize water infiltration and therefore, release of hazardous contaminants. In order for the cover to protect the environment it must remain free of holes and breaches throughout its service life. Covers are subject to subsidence, erosion, animal intrusion, plant root infiltration, etc., all of which will affect the overall performance of the cover. The U.S. Department of Energy Environmental Management (DOE-EM) Program 2006 Accelerated Cleanup Plan is pushing for rapid closure of many of the DOE facilities. This will require a great number of new cover systems. Some of these new covers are expected to maintain their performance for periods of up to 1000 years. Long-term stewardship will require monitoring/verification of cover performance over the course of the designed lifetime. In addition, many existing covers are approaching the end of their design life and will need validation of current performance (if continued use is desired) or replacement (if degraded). The need for a reliable method of verification and long-term monitoring is readily apparent. Currently, failure is detected through monitoring wells downstream of the waste site. This is too late as the contaminants have already left the disposal area. The proposed approach is the use of gaseous Perfluorocarbon tracers (PFT) to verify and monitor cover performance. It is believed that PFTs will provide a technology that can verify a cover meets all performance objectives upon installation, be capable of predicting changes in cover performance and failure (defined as contaminants leaving the site) before it happens, and be cost-effective in supporting stewardship needs. The PFTs are injected beneath the cover and air samples taken above (either air samples or soil gas samples) at the top of the cover. The location, concentrations, and time of arrival of the tracer(s) provide a direct measure of cover performance. PFT technology can be used as a non-invasive method (if injection ports are emplaced prior to cover emplacement) on new covers or a minimally invasive method on existing covers. PFT verification will be useful at all buried waste sites using a cover system (e.g., treated or untreated chemical waste landfills) including DOE, commercial, and private sector sites. This paper discusses the initial field trial of the PFT cover monitoring system performed at the Savannah River Site (SRS) in FY01. The experiments provided a successful proof-of-principle test of the PFT technology in monitoring caps and covers. An injection and sampling array was installed in the Bentomat test cap at the SRS Caps Test Facility. This system contained 6 feet of sandy soil beneath a 1/2 inch geosynthetic clay liner covered by an HDPE liner which was covered by 2 feet of clayey top soil. PFTs were injected into the sandy soil though a pre-existing system of access pipes below the cap and soil gas samples were taken on top of the cap. Mid-way into the injection period a series of 1 1/2 inch holes were punched into the cap (through the geomembrane) to provide a positive breach in the cap. Data will be presented that shows the initial cap was fairly tight and leak free and that the artificially induced leaks were detectable within two hours of occurrence.

HEISER,J.; SULLIVAN,T.; SERRATO,M.

2002-02-24T23:59:59.000Z

444

Selective catalytic reduction of nitrogen oxides by ammonia over Fe{sup 3+}-exchanged TiO{sub 2}-pillared clay catalysts  

SciTech Connect (OSTI)

Fe-exchanged TiO{sub 2}-pillared clay (PILC) catalysts were prepared and used for selective catalytic reduction (SCR) of NO{sub x} by ammonia. They were also characterized for surface area, pore size distribution, and by XRD, H{sub 2}-TPR, and FT-IR methods. The Fe-TiO{sub 2}-PILC catalysts showed high activities in the reduction of NO{sub x} by NH{sub 3} in the presence of excess oxygen. SO{sub 2} further increased the catalytic activities at above 350 C, whereas H{sub 2}O decreased the activity slightly. The catalysts were about twice as active as commercial-type V{sub 2}O{sub 5}-WO{sub 3}/TiO{sub 2} catalyst in the presence of H{sub 2}O and SO{sub 2}. Moreover, compared to the commercial catalyst, the Fe-TiO{sub 2}-PILC catalysts had higher N{sub 2}/N{sub 2}O product selectivities (e.g., 0--1% vs 9% N{sub 2}O at 400 C) and substantially lower activities (by 74--88%) for SO{sub 2} oxidation to SO{sub 3} under the same reaction conditions. The activity was further increased to over three times that of the vanadia-based catalyst when Ce was added. The high activity and low N{sub 2}O selectivity for the Fe-TiO{sub 2}-PILC catalysts were attributed to their low activity in the oxidation of ammonia, as compared with vanadia catalysts. XRD patterns of Fe-TiO{sub 2}-PILC were similar to those of TiO{sub 2}-PILC, showing no peaks due to iron oxide, even when the iron content reached 20.1%. The TPR results indicated that iron in the Fe-TiO{sub 2}-PILC catalysts with lower iron contents existed in the form of isolated Fe{sup 3+} ions. The activities of Fe-TiO{sub 2}-PILC catalysts were consistent with their surface acidities, which were identified by FT-IR of the NH{sub 3}-adsorbed samples. The enhancement of activities by H{sub 2}O + SO{sub 2} was attributed to the increase of surface acidity resulting from the formation of surface sulfate species of iron.

Long, R.Q.; Yang, R.T. [Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemical Engineering] [Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemical Engineering

1999-09-10T23:59:59.000Z

445

Effective forces in saturated clays  

E-Print Network [OSTI]

Oedometer Cross Section. , Figure 2. Cross Section of Soil and Water Contact Areas . . . . Figure 3. Phase Diagram (Saturated Soil). Figure 4. Schematic of Air/Water Interface System. . . Figure 5. In-Place Air/Water Interface Unit. Figure 6. Typical... energy in overpressured zones develops. 10 12 13 14 15 16 17 po 18 1. Porous Stone 2. Sample Ring 3. Flexible Rubber Membrane 4. Tapered Internal Ring 5. Small Porous Stone 6. Small Metal Measuring Area 7. Loading Yoke Nuts 8. Loading...

Teetes, George Ray

1993-01-01T23:59:59.000Z

446

Final construction quality assurance report for the Y-12 Industrial Landfill V, Area 2, Oak Ridge, Tennessee  

SciTech Connect (OSTI)

Lockheed Martin Energy Systems (LMES) has finished construction of Area 2 of the Y-12 Plant Industrial Landfill (ILF-V), classified as a Class 2 Landfill. This final Construction Quality Assurance (CQA) Report provides documentation that Area 2 was constructed in substantial compliance with the Tennessee Department of Environment and Conservation (TDEC) approved design, as indicated and specified in the permit drawings, approved changes, and specifications. This report applies specifically to the Area 2 excavation, compacted clay soil liner, geomembrane liner, granular leachate collection layer, protective soil cover, and the leachate collection system. An ``As-Built`` survey was performed and is included. The drawings provide horizontal and vertical information for Area 2, the anchor trench, the leachate collection pipe, the temporary access road, and cross-sections of Area 2. This report provides documentation of the following items: the excavation activities of Area 2; the maximum recompacted coefficient of hydraulic conductivity or permeability of the soil is less than 1 {times} 10{sup {minus}7} centimeters per second (cm/sec); the total thickness of the compacted clay soil liner equals a minimum of 2 feet; a 40 mil impermeable geomembrane (polypropylene) flexible membrane liner (FML) and 16 oz. geotextile fabric was placed in direct contact with the compacted clay soil liner; a 12 inch granular leachate collection layer was installed and covered with a 8 oz. geotextile separation fabric; the installation of the leachate collection piping; and the two foot protective clay soil cover.

Bessom, W.H. [Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States)

1996-11-01T23:59:59.000Z

447

ADVANCES ON THE USE OF GEOSYNTHETICS IN HYDRAULIC SYSTEMS Jorge G. Zornberg, Ph.D., P.E.  

E-Print Network [OSTI]

barrier underneath concrete slabs placed on the upstream face. Porous concrete was installed underneath

Zornberg, Jorge G.

448

Parameters for landfill-liner leak-rate model  

E-Print Network [OSTI]

Geophysical Union, Washington, D. C. CHAPTER II HAZARDOUS WASTE DISPOSAL OVERVIEW The passage of the Resource Conservation and Recovery Act (RCRA) by Congress in 1976 signaled an official recogn1tion of the shortcomings of then current hazardous waste... in industrial waste streams. The Clean Water Act of 1972 had already imposed technology-forcing standards on industrial polluters of surface waters (OTA, 1983). Under the authority of RCRA, the United States Environmental Protection Agency ( EPA) 1ssued...

Bahrt, Steven Carlton

1985-01-01T23:59:59.000Z

449

High efficiency proportional neutron detector with solid liner internal structures  

DOE Patents [OSTI]

A tube-style neutron detector, a panel-style neutron detector incorporating a plurality of tube-style neutron detectors, and a panel-style neutron detector including a plurality of anode wires are provided. A plurality of channels is provided in a neutron detector such that each channel has an inner surface of a coating layer including a neutron-absorbing material. A wire anode is provided at end of each channel so that electrons generated by a charged daughter particle generated by a neutron are collected to detect a neutron-matter interaction. Moderator units can be incorporated into a neutron detector to provide improved detection efficiencies and/or to determine neutron energy spectrum. Gas-based proportional response from the neutron detectors can be employed for special nuclear material (SNM) detection. This neutron detector can provide similar performance to .sup.3He-based detectors without requiring .sup.3He and without containing toxic, flammable, or high-pressure materials.

Kisner, Roger Allen; Holcomb, David Eugene; Brown, Gilbert M.

2014-08-05T23:59:59.000Z

450

NEPA COMPLIANCE SURVEY Project Information Project Title: Liner...  

Broader source: Energy.gov (indexed) [DOE]

l8l 0 Hazardous Air Pollutants? I Is the project subject to emissions limitations in an Air Quality 0 l8l 0 Control Region? 2 Rev*sed on 111212008 NEPA COMPLIANCE SURVEY Impacts...

451

Large Eddy Simulations of Combustor Liner Flows | Argonne Leadership  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickrinformationPostdocs space CombinedValues shown forShadeand

452

On Performance of Covers and Liners In Performance Assessments | Department  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September 15, 2010 PrintingNeed|3Programson(February 2014) |Challenges6of

453

Liners and Covers: Field Performance & Life Expectancy | Department of  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG | DepartmentEnergy InvitationLegalto CommercializationTop RightEnergy

454

Saltstone Disposal Facility Mechanically Stabilized Earth Vault Closure Cap Degradation Base Case: Institutional Control To Pine Forest Scenario  

SciTech Connect (OSTI)

As part of the current Saltstone Disposal Facility (SDF) Performance Assessment (PA) revision, the closure cap configuration was reevaluated and closure cap degradation mechanisms and their impact upon infiltration through the closure cap was evaluated for the existing SDF concrete vaults (i.e. vaults 1 and 4) for the base case land use scenario (i.e. institutional control to pine forest scenario) and documented in Phifer and Nelson (2003). The closure cap configuration was modified from a compacted kaolin barrier layer concept to a geosynthetic clay layer (GCL) barrier layer concept. The degradation mechanisms developed included pine forest succession, erosion, and colloidal clay migration. These degradation mechanisms resulted in changes in the hydraulic properties of the closure cap layers and resulting increases in infiltration through the closure cap over time.

Phifer, MA

2004-03-19T23:59:59.000Z

455

Structural analysis of closure cap barriers: A pre-test study for the Bentonite Mat Demonstration Project. Revision 1  

SciTech Connect (OSTI)

The Bentonite Mat Demonstration Project (BMDP) is a field demonstration study to determine the construction/installation requirements, permeability, and subsidence performance characteristics of a composite barrier. The composite barrier will consist of on-site sandy-clay blanketed by a bentonite mat and a flexible High Density Polyethylene (HDPE) liner (also called flexible membrane liner). Construction of one control test pad and three bentonite test pads are planned. The control test pad will be used to establish baseline data. Underneath the composite clay cap is a four feet thick loose sand layer in which cavities will be created by evacuation of sand. The present work provides a mathematical model for the BMDP. The mathematical model will be used to simulate the mechanical and structural responses of the composite clay cap during the testing processes. Based upon engineering experience and technical references, a set of nominal soil parameters have been selected.

Gong, Chung; Pelfrey, J.R.

1993-12-01T23:59:59.000Z

456

FTIR and kinetic studies of the mechanism of Fe{sup 3+}-exchanged TiO{sub 2}-pillared clay catalyst for selective catalytic reduction of NO with ammonia  

SciTech Connect (OSTI)

A series of FTIR spectroscopic and kinetic studies of the selective catalytic reduction (SCR) of nitric oxide by ammonia were conducted on Fe{sup 3+}-exchanged TiO{sub 2}-pillared clay (Fe-TiO{sub 2}-PILC) catalyst. It was found that No molecules were absorbed on the fresh Fe-TiO{sub 2}-PILC catalyst and then oxidized by O{sub 2} to adsorbed NO{sub 2} and nitrate species. These NO{sub x} adspecies could be reduced by NH{sub 3} at high temperatures. NH{sub 3} molecules could also be adsorbed on the Broensted acid and Lewis acid sites on the Fe-TiO{sub 2}-PILC catalyst to generate, respectively, NH{sup +}{sub 4} ions and coordinated NH{sub 3} species. These NH{sub 3} adspecies were active in reacting with NO, NO + O{sub 2} and NO{sub 2}, but the reaction rates of NH{sub 3} + NO + O{sub 2} and NH{sub 3} + NO{sub 2} were much higher than that of NNO + NH{sub 3}. However, under reaction conditions, the surface of Fe-TiO{sub 2}-PILC was mainly covered by NH{sup +}{sub 4} ions and coordinated NH{sub 3}, and no NO{sub x} adspecies were detected. This is in agreement with the zero-order for the SCR reaction with respect to NH{sub 3}. A possible reaction scheme for the SCR reaction on Fe-TiO{sub 2}-PILC was proposed. NO reduction initially involved the reaction between NO{sub 2} and pairs of NH{sub 3} adspecies to form an active intermediate, which finally reacted with gaseous or weakly adsorbed NO to produce N{sub 2} and H{sub 2}O.

Long, R.Q.; Yang, R.T.

2000-02-15T23:59:59.000Z

457

Herbicide Update Ian Willoughby and David Clay  

E-Print Network [OSTI]

for the rain- fastness trials is gratefully acknowledged. The Highways Agency funded the coppice regrowth work Glyphosate rain-fastness 8 Control of coppice regrowth 10 3. Regulatory changes 11 Definitions of situations

458

Carbon Emissions: Stone, Clay, and Glass Industry  

U.S. Energy Information Administration (EIA) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2007 10,998 9,933 10,998 10,643 10,998 10,643 10,998 10,998 10,64397 272 522 542PeruCarbon Emissions in the

459

Clay Electric Coop Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDITOhioOglesby,Sullivan, MissouriWebsterElectric Coop Corp Jump to:

460

Clay Electric Cooperative, Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin:EnergyWisconsin: Energy Resources JumpSouth Dakota: Energy Resources

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

187GEOSYNTHETICS INTERNATIONAL S 1997, VOL. 4, NO. 2 Technical Note by J.G. Zornberg and J.P. Giroud  

E-Print Network [OSTI]

of geomembranes by wind. The extension incorporates: (i) the influence on wind uplift of the slope inclination inclination of an exposed geomembrane; (ii) re- vision of the wind uplift tension-strain relationship.P. Giroud UPLIFT OF GEOMEMBRANES BY WIND - EXTENSION OF EQUATIONS ABSTRACT: This technical note presents

Zornberg, Jorge G.

462

Fracture characterization of clays and clay-like materials using flattened Brazilian Test  

E-Print Network [OSTI]

Fracture mechanics has been used for many years to study the mechanical behavior of brittle and quasi-brittle materials like concrete, rock, wood, and ceramics. To date, the application of fracture mechanics to soils has ...

Agaiby, Shehab Sherif Wissa

2013-01-01T23:59:59.000Z

463

Competitive sorption of pyrene and pyridine to natural clay minerals and reference clay standards  

E-Print Network [OSTI]

-VIS) absorbance (Hitachi U-3010) and fluorescence emission (SLM Aminico MC400) were used to investigate the presence of solution phase interactions between pyridine and pyrene during compefltive sorption experiments. Molar ratios of I pyrene to 10 pyridine...

Lee, Lai Man

2001-01-01T23:59:59.000Z

464

80 YEARS OF FUSION80 YEARS OF FUSION E.E.VelikhovVelikhov  

E-Print Network [OSTI]

Rostoker Plasma FocusPlasma Focus Filippov Maiser Maisonnier Sadovski Krauz LinerLiner Sakharov Pavlovski

465

Design of a composite combat helmet liner for prevention of blast-induced traumatic brain injury  

E-Print Network [OSTI]

Air blast-induced traumatic brain injuries (TBIs) represent a significant percentage of military personnel injuries observed in Operation Enduring Freedom (OEF) and Operation Iraqi Freedom (OIF). Prevalence of blast-induced ...

Vechart, Andrew (Andrew Peter)

2011-01-01T23:59:59.000Z

466

Development of a helmet liner for protection against blast induced trauma  

E-Print Network [OSTI]

Traumatic brain injuries caused by shock waves have attracted increased medical and scientific attention due to the large percentage of combat troops that have sustained such injuries in recent conflict theatres. To this ...

Christou, George Alexander

2010-01-01T23:59:59.000Z

467

Study of an advanced helmet liner concept to reduce TBI : experiments & simulation using sandwich structures  

E-Print Network [OSTI]

A large percentage of combat troops suffered Traumatic Brain Injuries (TBI) due to Improvised Explosive Devices (IEDs) in recent wars in the Middle East. The majority of TBIs were caused by exposure to blast waves. Use of ...

Goel, Rahul, S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

468

Fluid-filled helmet liner concept for protection against blast-induced traumatic brain injury  

E-Print Network [OSTI]

Due to changes in modem warfare threats, as well as advances in body armor, soldier survivability in combat has increased, but blast-induced Traumatic Brain Injury (TBI) has become a prevalent injury in the battlefield. ...

Yost, Allison L. (Allison Lynne)

2012-01-01T23:59:59.000Z

469

Piston-Liner Crevice Geometry Effect on HCCI Combustion by Multi-Zone Analysis  

SciTech Connect (OSTI)

A multi-zone model has been developed that accurately predicts HCCI combustion and emissions. The multizone methodology is based on the observation that turbulence does not play a direct role on HCCI combustion. Instead, chemical kinetics dominates the process, with hotter zones reacting first, and then colder zones reacting in rapid succession. Here, the multi-zone model has been applied to analyze the effect of piston crevice geometry on HCCI combustion and emissions. Three different pistons of varying crevice size were analyzed. Crevice sizes were 0.26, 1.3 and 2.1 mm, while a constant compression ratio was maintained (17:1). The results show that the multi-zone model can predict pressure traces and heat release rates with good accuracy. Combustion efficiency is also predicted with good accuracy for all cases, with a maximum difference of 5% between experimental and numerical results. Carbon monoxide emissions are underpredicted, but the results are better than those obtained in previous publications. The improvement is attributed to the use of a 40-zone model, while previous publications used a 10-zone model. Hydrocarbon emissions are well predicted. For cylinders with wide crevices (1.3 and 2.1 mm), HC emissions do not decrease monotonically as the relative air/fuel ratio ({lambda}) increases. Instead, maximum HC emissions are obtained for an intermediate value of {lambda}. The model predicts this relative air/fuel ratio for maximum HC emissions with very good accuracy. The results show that the multi-zone model can successfully predict the effect of crevice geometry on HCCI combustion, and therefore it has applicability to the design of HCCI engines with optimum characteristics for high efficiency, low emissions and low peak cylinder pressure.

Aceves, S M; Flowers, D L; Espinosa-Loza, F; Martinez-Frias, J; Dibble, R W; Christensen, M; Johansson, B; Hessel, R P

2002-09-04T23:59:59.000Z

470

Idaho National Engineering and Environmental Laboratory Low Permeation Liner for H2  

E-Print Network [OSTI]

A S Subcontract with University signed 01/03 CRADA with Quantum signed 01/03 Task 1. Selection of Materials a and Signed Subcontract with UCLA (Prof. Yang's Conductive Polymers Group) · Negotiated and Signed CRADA (No

471

PIECEWISE LINERIZATION OF LOGIC FUNCTIONS* The work was supported by BSF under Grant 2002259  

E-Print Network [OSTI]

]. BDDs are a standard part of many CAD systems in logic design, signal processing, and other areas where

Karpovsky, Mark

472

Investigation of wall friction in noncircular ducts with a rough liner  

E-Print Network [OSTI]

. Civil ~Rn i , I nd , p. 166, P h Ay, 1DDD 2. R k'*1, R M * i, M*ch d I' G 1 ti A~n 1 Viley and. Sons, Inc. , New York, p. 66, 1950, H *I ci er, P. G. , ~atd, P~, d Ai. ~G* d't'* 19: 127(19rr. 7). O; Johnaon, Guy, Jr. , Determination oi' the ~pandit...INVESTIGATION OZ 7('ALL FRICTION IN NONCIHCULAR DUCTS VIITH A ROUGH LINEH A Thesis John Charles Tyler Submitted. to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements...

Tyler, John Charles

1959-01-01T23:59:59.000Z

473

E-Print Network 3.0 - accelerated pavement testing Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Accelerated LoadTesting... , on geosynthetics benefits and ... Source: Louisiana Forest Products Development Center Collection: Renewable Energy 2 SOURCE: UNIVERSITY OF...

474

E-Print Network 3.0 - airfield pavement deterioration Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

is needed. This report ... Source: Texas at Austin, University of - Center for Transportation Research Collection: Energy Storage, Conversion and Utilization 5 Geosynthetics in...

475

Y-12 Industrial Landfill V. Permit application modifications  

SciTech Connect (OSTI)

This report contains the modifications in operations and design to meet the Tennessee Department of Environment and Conversation (TDEC) July 10, 1993, amendments to the regulations for Class 2 landfills. These modifications, though extensive in design and construction cost, are considered minor revisions and should not require a processing fee. Area 1 of ILF V, comprising approximately 20% of the ILF V footprint, was designed and submitted to TDEC prior to the implementation of current regulations. This initial area was constructed with a compacted clay liner and leachate collection system, and became operational in April 1994. The current regulations require landfills to have a composite liner with leachate collection system and closure cap. Modifications to upgrade Areas 2 and 3 of ILF V to meet the current TDEC requirements are included.

NONE

1995-09-01T23:59:59.000Z

476

POST CLOSURE INSPECTION AND MONITORING REPORT FOR CORRECTIVE ACTION UNIT 417: CENTRAL NEVADA TEST AREA - SURFACE, HOT CREEK VALLEY, NEVADA; FOR CALENDAR YEAR 2005  

SciTech Connect (OSTI)

Corrective Action Unit (CAU) 417, Central Nevada Test Area - Surface, is located in Hot Creek Valley in northern Nye County, Nevada, and consists of three areas commonly referred to as UC-1, UC-3, and UC-4. CAU 417 consists of 34 Corrective Action Sites (CASs) which were closed in 2000 (U. S. Department of Energy, National Nuclear Security Administration Nevada Operations Office, 2001). Three CASs at UC-1 were closed in place with administrative controls. At CAS 58-09-01, Central Mud Pit (CMP), a vegetated soil cover was constructed over the mud pit. At the remaining two sites CAS 58-09-02, Mud Pit and 58-09-05, Mud Pits (3), aboveground monuments and warning signs were installed to mark the CAS boundaries. Three CASs at UC-3 were closed in place with administrative controls. Aboveground monuments and warning signs were installed to mark the site boundaries at CAS 58-09-06, Mud Pits (5), CAS 58-25-01, Spill and CAS 58-10-01, Shaker Pad Area. Two CASs that consist of five sites at UC-4 were closed in place with administrative controls. At CAS 58-09-03, Mud Pits 9, an engineered soil cover was constructed over Mud Pit C. At the remaining three sites in CAS 58-09-03 and at CAS 58-10-05, Shaker Pad Area, aboveground monuments and warning signs were installed to mark the site boundaries. The remaining 26 CASs at CAU 417 were either clean-closed or closed by taking no further action. Quarterly post-closure inspections are performed at the CASs that were closed in place at UC-I, UC-3, and UC-4. During calendar year 2005, site inspections were performed on March 15, June 16, September 22, and December 7. The inspections conducted at the UC-1 CMP documented that the site was in good condition and continued to show integrity of the cover unit. No new cracks or fractures were observed until the December inspection. A crack on the west portion of the cover showed evidence of lateral expansion; however, it is not at an actionable level. The crack will be sealed by filling with bentonite during the first quarter of 2006 and monitored during subsequent inspections. The cover vegetation was healthy and well established. No issues were identified with the CMP fence, gate, or subsidence monuments. No issues were identified with the warning signs and monuments at the other two UC-1 locations. The inspections at UC-3 indicated that the sites are in excellent condition. All monuments and signs showed no displacement, damage, or removal. A small erosion gully from spring rain runoff was observed during the June inspection, but it did not grow to an actionable level during 2005. No other issues or concerns were identified. Inspections performed at UC-4 Mud Pit C cover revealed that erosion rills were formed during March and September exposing the geosynthetic clay liner. Both erosion rills were repaired within 90 days of reporting. Sparse vegetation is present on the cover. The overall condition of the monuments, fence, and gate are in good condition. No issues were identified with the warning signs and monuments at the other four UC-4 locations. Subsidence surveys were conducted at UC-1 CMP and UC-4 Mud Pit C in March and September of 2005. The results of the subsidence surveys indicate that the covers are performing as expected, and no unusual subsidence was observed. The June vegetation survey of the UC-1 CMP cover and adjacent areas indicated that the revegetation has been very successful. The vegetation should continue to be monitored to document any changes in the plant community and identify conditions that could potentially require remedial action in order to maintain a viable vegetative cover on the site. Vegetation surveys should be conducted only as required. Precipitation during 2005 was above average, with an annual rainfall total of 21.79 centimeters (8.58 inches). Soil moisture content data show that the UC-1 CMP cover is performing as designed, with evapotranspiration effectively removing water from the cover. It is recommended to continue quarterly site inspections and the collection of soil moisture data for the UC-1 CMP cove

NONE

2006-04-01T23:59:59.000Z

477

Deputy Secretary Clay Sell Touts Georgian Efforts to Advance...  

Office of Environmental Management (EM)

Deputy Secretary visited senior government officials and business leaders in Moscow, Russia and Kyiv, Ukraine. Media contact(s): Craig Stevens, (202) 586-4940 Addthis Related...

478

Tensile strengths of problem shales and clays. Master's thesis  

SciTech Connect (OSTI)

The greatest single expense faced by oil companies involved in the exploration for crude oil is that of drilling wells. The most abundant rock drilled is shale. Some of these shales cause wellbore stability problems during the drilling process. These can range from slow rate of penetration and high torque up to stuck pipe and hole abandonment. The mechanical integrity of the shale must be known when the shalers are subjected to drilling fluids to develop an effective drilling plan.

Rechner, F.J.

1990-01-01T23:59:59.000Z

479

Modeling of strain rate effects on clay in simple shear  

E-Print Network [OSTI]

strength and log scale of strain rate. To include the effects of strain rate, the modified simple effective stress model starts with two assumptions: (1) a specific shear strength corresponds to a specific strain rate in a unique relation; and (2...

Jung, Byoung Chan

2006-08-16T23:59:59.000Z

480

Clay Minerals Related To The Hydrothermal Activity Of The Bouillante...  

Open Energy Info (EERE)

Lesser Antilles arc. Three directional wells were drilled in 2001 to optimize the productivity of the geothermal field up to 15 MWe and to investigate the vertical distribution...

Note: This page contains sample records for the topic "geosynthetic clay liner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Effect of sample disturbance in opalinus clay shales  

E-Print Network [OSTI]

The sample disturbance problem for different geomaterials is reviewed in this thesis. A general discussion on the disturbance sources and complexities of the disturbance problem is followed by detailed reviews on disturbance ...

Pei, Jianyong, 1975-

2004-01-01T23:59:59.000Z

482

An engineering geology analysis of home foundations on expansive clays  

E-Print Network [OSTI]

temperature associated with the wetting of dry kaolinite 113 Thermal and isothermal di f f us ivity values versus soil water content in accord with the theory of Philip and de Vries 113 APPENDIX C C-1 Probable general form of the rela- tionship between... limited treatment from three disciplines. The soils engineer has developed a broad understanding of expansive soils based on practical experience, but has only recently becun to apply classical soil mechanics theory to this area. Within the tield...

Castleberry, Joe Patterson

2012-06-07T23:59:59.000Z

483

By HENRY CLAY WEBSTER Posted: December 6, 2010  

E-Print Network [OSTI]

be quite high. Education and preparation: To enter the field, candidates can obtain a master's degree who is too extroverted might not be good at that." Suggested job searches: Counselor jobs | Clinical reserved. Use of this Web site constitutes acceptance of our Terms and Conditions of Use and Privacy Policy

Rhode Island, University of

484

The adsorption of selected chemical compounds on soil clays  

E-Print Network [OSTI]

from a missile area and forwarded to Texas A d: M University' from MQClellgn A. P, 3. , Sacramento, California. ihe Alken soil series is discussed in the U, S. D. A. Placerville Area, California Soil Survey, Series 1927, Ho. $4. 12 Hanford loam... sand. The sample of Hanford loamy sand was taken by the Air Force from a missile area and forwarded to Texas A 6 M University from McClellan A. F. B. , Sacramento, California. The Hanford soil series is discussed in the U. S. D, A. Madera Area...

Hoover, William Leroy

2012-06-07T23:59:59.000Z

485

Upper bound analysis for drag anchors in soft clay  

E-Print Network [OSTI]

This study presents an upper bound plastic limit analysis for predicting drag anchor trajectory and load capacity. The shank and fluke of the anchor are idealized as simple plates. The failure mechanism involves the motion of the anchor about a...

Kim, Byoung Min

2007-04-25T23:59:59.000Z

486

Conductive two-dimensional titanium carbide clay with high...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

This capacitance is almost twice that of our previous report 8 , and our synthetic method also offers a much faster route to film production as well as the avoid- ance of...

487

Sandstone Acidizing Using Chelating Agents and their Interaction with Clays  

E-Print Network [OSTI]

. The substitution of seawater in place of deionized water for mixing purposes also led to an increased conductivity of the core implying GLDA is compatible with seawater. In the static solubility tests, chelates were mixed with HF acid at various concentrations...

George, Noble Thekkemelathethil 1987-

2013-01-09T23:59:59.000Z

488

Nutritional factors limiting forage yields in Houston black clay  

E-Print Network [OSTI]

4 100 25 0 5 100 25 100 6 100 100 0 7 100 100 100 8 100 100 100 y Zn 1. 73 0. 06 1. 70 0. 73 0. 14 1. 75 0. 10 1. 43 0. 64 0. 13 1. 83 0. 09 1. 73 0. 73 0. 14 2. 37 0. 10 1. 49 0. 74 0. 14 2. 42 0 ' 12 1 ~ 47 0 ' 76 0 ' 15 2. 42 0. 13 1... in N s m s P K Ca Mg Zn Fe Mn 1 50 0 2 50 25 14. 3 3 50 25 100 4 100 25 0 5 100 25 100 11. 3 14. 9 11, 2 6 100 100 16. 6 7 100 100 100 8 100 100 100 + Zn 9 100 100 100 * Fe 14. 4 19. 7 23. 3 10 100 100 100 + Fe + Zn 32. 6 164 6. 3...

Gentzsch, Enrique Pedro

1968-01-01T23:59:59.000Z

489

Modeling Coupled Processes in Clay Formations for Radioactive Waste Disposal  

E-Print Network [OSTI]

I. Reservoir Engineering in Coal Seams: Part 1—The PhysicalStorage and Movement in Coal Seams. SPE Reserv. Eng. , 2 (swelling stress for coal seams that can involve swelling or

Liu, Hui-Hai

2010-01-01T23:59:59.000Z

490

A simplified formulation for moisture diffusion through partly saturated clays  

E-Print Network [OSTI]

to infiltration of moisture from the ground surface can induce sloughing and shallow slide failures. This issue creates a significant maintenance problem for the Texas Department of Transportation (TxDOT). The postulated mechanism for these slope failures is: 1...

Tang, Dina V

2003-01-01T23:59:59.000Z

491

Compaction characteristics of clay soil using the gyratory testing machine  

E-Print Network [OSTI]

xagijk;:M ~t &Sr; &?+a~t~ . kel4?. , g @'w:, 4j, . t'@%%jr'. e', 0 ~~ ~?'tkx $4ie444f, ' L~ kg& , ri~ iigaf~ f4. ~'~'~"~Q' ~~~jjj gjjjjp%g4. ";, ':& ?qere0sm'ft 5%?jr''sk E'aa "~ yjig$y ?~~. Q~?'. ~'~ ~gqg$f~, ?: ', - :?'??''??'&~::?id~'4'j..., f)P, )& . 4 . I!~g)ti +. % ? I 'ill ? ~~a W?}. :?'?W ri??i ~:jJ, ??i;:. }le . ! f??}I~ ~ jgy}?? lq &!i)~'fg~5 +g?e "?PB?f}N&::+ '. w-:. ~'e. 9;g' Jf~ A -. w~Wm ?:?'i&?'. . '??) 48' &%WE~&'. &:-'+yjHi!??!}?)} , ;+i?g "ps% ~??'. m~4. g...

Al-Khafaji, Abbas Nasir

1964-01-01T23:59:59.000Z

492

Kinetics of the clay roofing tile convection drying  

SciTech Connect (OSTI)

Kinetics of the convection drying process of flat tile has been investigated experimentally in an industrial tunnel dryer. Several velocities of wet tile movement through the dryer were tested to obtain maximum allowable drying rate curve. As there are various models to describe the kinetics of convection drying, finding a model that would fairly well approximate the kinetics of the whole drying process was part of the research. Especially the polynomial and exponential models were tested. It was found that exponential model of the type: B(t) = (a[minus]B[sub e])[center dot]EXP([minus]bt[sup 2])+B[sub e], ([minus]dB(t)/dt) = 2bt(B(t)[minus]B[sub e]) significantly correlates the kinetics of the whole tile drying process. Applying the maximum allowable drying rate curve obtained for flat tile in the first period of drying, a grapho-analytic model for the optimal conducting of the process has been developed.

Thomas, S. (Univ. of Osijek (Croatia). Faculty of Food Technology); Skansi, D. (Univ. of Zagreb (Croatia). Faculty of Chemical Engineering and Technology); Sokele, M. (Croatian Post and Telecommunications, Zagreb (Croatia). Telecommunications Center)

1993-01-01T23:59:59.000Z

493

aluminosilicate clay minerals: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

used mineral-based crankcase oil may build up in shellfish or other organisms. q Some metals in used mineral-based crankcase oil dissolve in water and move through the s Used...

494

Conductive two-dimensional titanium carbide clay with high...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

MAX phases, which comprise a .70-member family of layered, hexagonal early-transition-metal carbides and nitrides 13 . To date, all MXenes have been produced by etching MAX...

495

applied clay science: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Procedure Contents Introduction i Preface 1 Haller, Gary L. 11 Master of Science Applied Physics Engineering Websites Summary: Master of Science Applied Physics Programme Guide...

496

Platte-Clay Electric Coop, Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Powerstories onFocusOskiPhilips Color Kinetics JumpPipestone,

497

Clay Nanoparticle-Supported Single-Molecule Fluorescence  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation SitesStandingtheirCheckInnovation,Classroom Visits PPPL

498

Clay County, Texas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarreisVolcanic NationalElectric)Clarion-Goldfield

499

Intercalation of Trichloroethene by Sediment-Associated Clay Minerals. |  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared Land SurfaceVirus-InfectedIntelligentCO2

500

Deputy Secretary Clay Sell Touts Georgian Efforts to Advance Regional  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergy DOEDealing WithDevelopmentReportDepartmentalThreein Texas |Energy