Sample records for geosynthetic clay liner

  1. Geosynthetic clay liner applications

    SciTech Connect (OSTI)

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

    1995-05-01T23:59:59.000Z

    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.

  2. 1 INTRODUCTION Geosynthetic Clay Liners (GCLs) are sealing ele-

    E-Print Network [OSTI]

    Boyer, Edmond

    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

  3. Geosynthetic clay liners in alkaline environments

    SciTech Connect (OSTI)

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

    1997-11-01T23:59:59.000Z

    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.

  4. Shear strength of reinforced geosynthetic clay liner

    SciTech Connect (OSTI)

    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

    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.

  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]

    Zornberg, Jorge G.

    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

  7. Installation of geosynthetic clay liners at California MSW landfills

    SciTech Connect (OSTI)

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

    1997-11-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  10. Geosynthetic Clay Liner applications in waste disposal facilities

    SciTech Connect (OSTI)

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

    1995-12-31T23:59:59.000Z

    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.

  11. Slope stability of geosynthetic clay liner test plots

    SciTech Connect (OSTI)

    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

    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.

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

    E-Print Network [OSTI]

    Thielmann, Stuart

    2012-01-01T23:59:59.000Z

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

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

    SciTech Connect (OSTI)

    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

    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.

  14. Laboratory simulation of geosynthetic clay liner application in contaminated liquids evacuation

    SciTech Connect (OSTI)

    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

    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.

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

    SciTech Connect (OSTI)

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

    1997-12-31T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    1996-12-31T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    1995-10-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

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

    SciTech Connect (OSTI)

    Wang, X.; Benson, C.H.

    1999-12-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

  1. Characterization of Geosynthetic Clay Liner Bentonite using Micro-analytical Methods

    SciTech Connect (OSTI)

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

    2010-01-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Thielmann, Stuart

    2012-01-01T23:59:59.000Z

    hydraulic conductivity of compacted clay liners,” Journal offrom stones in an underlying clay layer,” Geotextiles andof three geosynthetic clay liners,” Journal of Geotechnical

  3. GEOSYNTHETICS ASIA 2012 Asian Regional Conference on Geosynthetics

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

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

    SciTech Connect (OSTI)

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

    1997-11-01T23:59:59.000Z

    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.

  5. Advances in Geosynthetics Materials and Applications for Soil Reinforcement

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  6. Unsaturated geotechnics applied to geoenvironmental engineering problems involving geosynthetics

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    ; · 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

  8. 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

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  10. 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

  11. 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

  12. ablative lithium liner: Topics by E-print Network

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

    Hills landfill (Byrne et al. 1992; Gilbert et al. 1998143 1 INTRODUCTION Geosynthetic clay liners (GCLs) with geomembranes (GMs) placed on slopes as part of composite liner...

  13. acrylic denture liners: Topics by E-print Network

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

    Hills landfill (Byrne et al. 1992; Gilbert et al. 1998143 1 INTRODUCTION Geosynthetic clay liners (GCLs) with geomembranes (GMs) placed on slopes as part of composite liner...

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  15. African Regional Conference 1 Advances in the Use of Geosynthetics

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  16. Hydraulic Interaction between Geosynthetic Drainage Layers and Unsaturated Low Plasticity Clay

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  17. american geosynthetics society: 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...

  18. SERVICE LIFE OF A LANDFILL LINER SYSTEM SUBJECTED TO ELEVATED TEMPERATURES

    E-Print Network [OSTI]

    hydraulic conductivity compacted soil liners and geosynthetic clay liners. This paper uses10 a case history, low hydraulic conductivity compacted25 soil liner (LHCSL), geotextiles, and geosynthetic clay linerSERVICE LIFE OF A LANDFILL LINER SYSTEM SUBJECTED TO ELEVATED TEMPERATURES Timothy D. Stark, Ph

  19. New Trends in the Use of Geosynthetics in Environmental Applications

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  20. Evaluation and remediation of a fire damaged geosynthetic liner system

    SciTech Connect (OSTI)

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

    1997-11-01T23:59:59.000Z

    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.

  1. Second Pan American Geosynthetics Conference & Exhibition GeoAmericas 2012

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

  2. 1 INTRODUCTION The use of geosynthetics in modern landfills involves

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  3. 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...

  4. 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...

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    -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

  6. 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

  7. 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...

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    ) 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

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

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

    E-Print Network [OSTI]

    Wechsler, Sharon Elizabeth

    1990-01-01T23:59:59.000Z

    FIELD VERSUS LABORATORY CHARACTERIZATION OF CLAY DEPOSITS FOR USE AS IN SITU MUNICIPAL LANDFILL LINERS A Thesis by SHARON ELIZABETH WECHSLER Submitted to the Office of Graduate Studies Texas Aa? University in partial fulfillment... of the requirement for the degree of . KASTER OF SCIENCE Nay 1990 Major Subject: Geology FIELD VERSUS LABORATORY CHARACTERIZATION OF CLAY DEPOSITS FOR USE AS IN SITU MUNICIPAL LANDFILL LINERS A Thesis by SHARON ELIZABETH WECHSLER Approved as to style...

  11. Characterization of secondary collection system flows beneath synthetic composite liners

    SciTech Connect (OSTI)

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

    1995-12-31T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Nagar, Bharat Bhushan; Mirza, Umar Karim

    2002-01-01T23:59:59.000Z

    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

  13. Geosynthetics in a salinity-gradient solar pond environment

    SciTech Connect (OSTI)

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

    1997-11-01T23:59:59.000Z

    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.

  14. Landfill liner interface strengths from torsional-ring-shear tests

    SciTech Connect (OSTI)

    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

    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.

  15. Laboratory measurements of contaminant attenuation of uranium mill tailings leachates by sediments and clay liners

    SciTech Connect (OSTI)

    Serne, R.J.; Peterson, S.R.; Gee, G.W.

    1983-04-01T23:59:59.000Z

    We discuss FY82 progress on the development of laboratory tools to aid in the prediction of migration potential of contaminants present in acidic uranium mill tailings leachate. Further, empirical data on trace metal and radionuclide migration through a clay liner are presented. Acidic uranium mill tailings solution from a Wyoming mill was percolated through a composite sediment called Morton Ranch Clay liner. These laboratory columns and subsequent sediment extraction data show: (1) As, Cr, Pb, Ag, Th and V migrate very slowly; (2) U, Cd, Ni, Zn, Fe, Mn and similar transition metals are initially immobilized during acid neutralization but later are remobilized as the tailings solution exhausts the clay liner's acid buffering capacity. Such metals remain immobilized as long as the effluent pH remains above a pH value of 4 to 4.5, but they become mobile once the effluent pH drops below this range; and (3) fractions of the Se and Mo present in the influent tailings solution are very mobile. Possible controlling mechanisms for the pH-dependent immobilization-mobilization of the trace metals are discussed. More study is required to understand the controlling mechanisms for Se and Mo and Ra for which data were not successfully collected. Using several column lengths (from 4.5 to 65 cm) and pore volume residence times (from 0.8 to 40 days) we found no significant differences in contaminant migration rates or types and extent of controlling processes. Thus, we conclude that the laboratory results may be capable of extrapolation to actual disposal site conditions.

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  17. air-liquid interface cell: 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)...

  18. 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)...

  19. age strength enhancement: 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)...

  20. air-liquid interface biofilms: 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)...

  1. all-electrical molecule-mesoscopic interface: Topics by E-print...

    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)...

  2. azeite transtensional shear: 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)...

  3. air kerma 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)...

  4. abu rusheid-sikeit shear: 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)...

  5. 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)...

  6. GEOSYNTHETIC DAM LINING SYSTEMS By: Christine T. Weber1

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    GEOSYNTHETIC DAM LINING SYSTEMS By: Christine T. Weber1 and Jorge Zornberg, Advisor Abstract: The overall goal of this project is to contribute towards the use of geosynthetics in the design of dams geomembrane and composite liners under conditions representative of dams. There has been previous work done

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

    SciTech Connect (OSTI)

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

    1994-12-31T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Boyer, Edmond

    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

  9. 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]

    Zornberg, Jorge G.

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

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  11. 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...

  12. aopex11-1 gene 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...

  13. 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...

  14. antihypertensive trial failures: 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...

  15. ahr repressor involving: 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...

  16. 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...

  17. 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...

  18. 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...

  19. anaemia potential 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...

  20. aeruginosa w51d 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...

  1. 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...

  2. 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...

  3. 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...

  4. adenine-induced 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...

  5. actinobacillus pleuropneumoniae 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...

  6. 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...

  7. 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...

  8. 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...

  9. antigen psa 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...

  10. arteriovenous fistula 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...

  11. accidental fatalities involving: 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...

  12. acetaminophen-induced 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...

  13. 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...

  14. 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...

  15. 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...

  16. aspergillus nidulans 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...

  17. aminoguanidine involve reduced: 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...

  18. arteriovenous malformations involving: 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...

  19. arene di-oxygenases 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...

  20. 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...

  1. alternata involves active: 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...

  2. 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...

  3. anterior prefrontal involvement: Topics by E-print Network

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    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...

  4. adjuvant involved field: Topics by E-print Network

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    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...

  5. asymptomatic lymphangioma involving: Topics by E-print Network

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    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...

  6. 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...

  7. 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...

  8. apoptosis involving activation: 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...

  9. arteriovenous malformation involving: 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...

  10. By Robert L. Virta The amount of clay sold or used by domestic facilities for producing bentonite liners in

    E-Print Network [OSTI]

    are mainly underclays associated with coal and suitable for refractory uses. Ball Clay.--The ball clay. Production increased in all States except Kentucky. Water-slurried ball clay was produced in Kentucky

  11. 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

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

    E-Print Network [OSTI]

    Kamat, Vineet R.

    .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

  13. Internal and Interface Shear Strength of

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

  15. Frost effects on soil liner systems results of a research project

    SciTech Connect (OSTI)

    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

    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.

  16. 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

  17. 1 INTRODUCTION In recent years there have been many advances in

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

  18. 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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

  20. Internal and Interface Shear Strength of

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  1. 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

  2. amphetamine-induced conditioned place: Topics by E-print Network

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

    Hills landfill (Byrne et al. 1992; Gilbert et al. 1998143 1 INTRODUCTION Geosynthetic clay liners (GCLs) with geomembranes (GMs) placed on slopes as part of composite liner...

  3. 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...

  4. al acceso parte: Topics by E-print Network

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

    Hills landfill (Byrne et al. 1992; Gilbert et al. 1998143 1 INTRODUCTION Geosynthetic clay liners (GCLs) with geomembranes (GMs) placed on slopes as part of composite liner...

  5. GEOSYNTHETIC REINFORCEMENT IN LANDFILL DESIGN: US PERSPECTIVES

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    GEOSYNTHETIC REINFORCEMENT IN LANDFILL DESIGN: US PERSPECTIVES Jorge G. Zornberg1 , M. ASCE Abstract: Geosynthetic reinforcement in landfill applications in the US has involved conventional reinforced soil structures and veneer stabilization with reinforcements placed along the landfill slope

  6. MONITORING LANDFILL COVER BY ELECTRICAL RESISTIVITY1 TOMOGRAPHY ON AN EXPERIMENTAL SITE2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

  7. 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

  8. 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

  9. Department of Civil & Environmental Engineering Geotechnical Group Seminar Series

    E-Print Network [OSTI]

    Kamat, Vineet R.

    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

  10. 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,...

  11. 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,...

  12. 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,...

  13. aw-6061 particle reinforced: 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,...

  14. 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...

  15. acetyl-coa synthetase 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,...

  16. 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,...

  17. 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...

  18. aortic aneurysms 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...

  19. adriatic foreland 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,...

  20. 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,...

  1. 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,...

  2. acid fortification 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,...

  3. 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...

  4. 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,...

  5. 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,...

  6. 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...

  7. angiography clinical 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,...

  8. ankle arthroscopic 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,...

  9. 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,...

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  11. 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,...

  12. 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,...

  13. 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,...

  14. 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...

  15. asv-reducing bacterium 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,...

  16. aboveground biota 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,...

  17. acid dha 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,...

  18. aortic aneurysm 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...

  19. 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,...

  20. aureus mrsa 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,...

  1. 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,...

  2. annual international landfill: 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,...

  3. 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]

    Zornberg, Jorge G.

    , 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

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  5. International GSI-Asia Geosynthetics Conference Taichung, Taiwan, Nov. 16~18, 2010

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    : An overview of the interaction between soils and geosynthetics under unsaturated conditions is provided hydraulic properties of geosynthetics. Experimental data is provided illustrating that geosynthetic that develops in systems involving geosynthetics [e.g., geosynthetic drainage layers (GDLs)] has been evaluated

  6. Thse en cotutelle prsente

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

  7. 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

  8. 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...

  9. asian regional cooperation: 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 170...

  10. 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...

  11. asia oceania region: 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 105...

  12. 1 INTRODUCTION Since reinforced soil technique began to be used in

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  13. 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]

    Zornberg, Jorge G.

    .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

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

    E-Print Network [OSTI]

    McDonald, Kirk

    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

  15. Combustor liner cooling system

    DOE Patents [OSTI]

    Lacy, Benjamin Paul; Berkman, Mert Enis

    2013-08-06T23:59:59.000Z

    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.

  16. Running tool for liner hanger

    SciTech Connect (OSTI)

    Melenyzer, G.J.

    1990-03-27T23:59:59.000Z

    This patent describes a running tool. It is for a liner hanger having an annular groove in its bore, and upwardly facing slots in its upper end, and a liner string depending therefrom.

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    (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

  18. 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

  19. CANADIAN GEOTECHNICAL CONFERENCE JOINT IAH-CNC/CGS CONFERENCE

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  20. 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]

    Zornberg, Jorge G.

    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

  1. Geosynthetics 2013 April 1-4, Long Beach, California

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  2. Sepiolite as an Alternative Liner Material in Municipal Solid Waste Landfills

    E-Print Network [OSTI]

    Aydilek, Ahmet

    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

  3. Title of the article MODELLING OF METAL POLLUTANT LEACHING THROUGH A SMECTITE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    adopted in several countries, and this includes the use of natural or geosynthetic clay liners2012 Author manuscript, published in "Applied Clay Science 59-60 (2012) 13-18" DOI : 10.1016/j.clay properties of a clay barrier (Fo-Ca) under controlled homogeneous conditions. A physical model that allows

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

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    .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

  5. Award of Excellence ~ Darling Downs Tarpaulins

    E-Print Network [OSTI]

    Aydilek, Ahmet

    . Toronto, Ontario, Canada A geosynthetlc clay liner (GCl) was selected to cover the top of the Rennie and was fea- tured in the April 2003 issueof GFRmagazine. Geotextiles: geosynthetic ciayliner (GCL),Sentofix Technologies Inc.; geogrid, TensarEarth Technologies Fabrication: TerrafixGeosynthetics Inc. Installation: Hard

  6. Geosynthetics International, 2010, 17, No.3 Design of a landfill final cover system

    E-Print Network [OSTI]

    Geosynthetics International, 2010, 17, No.3 Design of a landfill final cover system T. D. Stark containment, Strength, Stability, Shearbox test, Failure, Final cover system, Landfill REFERENCE: Stark, T. D. & Newman, E. J. (20 I0). Design of a landfill final cover systcm. Geosynthetics [ntemational17, No.3, 124

  7. New equipment to conduct confined-accelerated creep tests on geosynthetics

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    New equipment to conduct confined-accelerated creep tests on geosynthetics F. A. N. Franca & B. S independently. This paper presents a new device to perform simultaneously confined and accelerated creep tests on geosynthetics. The results of creep tests conducted using both a nonwoven and a woven geotextiles are presented

  8. TENSILE AND CREEP BEHAVIOR OF GEOSYNTHETICS USING CONFINED-ACCELERATED TESTS

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    TENSILE AND CREEP BEHAVIOR OF GEOSYNTHETICS USING CONFINED-ACCELERATED TESTS COMPORTEMENT EN tensile and creep standard tests are performed with in-isolation specimens, they may not reproduce the possibly significant effect of soil-geosynthetic interaction. A new creep testing machine was recently

  9. Clay Minerals

    SciTech Connect (OSTI)

    Mueller, Karl T.; Sanders, Rebecca L.; Washton, Nancy M.

    2014-03-14T23:59:59.000Z

    Clay minerals are important components of the environment and are involved or implicated in processes such as the uptake of pollutants and the release of nutrients and as potential platforms for a number of chemical reactions. Owing to their small particle sizes (typically, on the order of microns or smaller) and mixing with a variety of other minerals and soil components, advanced characterization methods are needed to study their structures, dynamics, and reactivities. In this article, we describe the use of solid-state NMR methods to characterize the structures and chemistries of clay minerals. Early one-pulse magic-angle spinning (MAS) NMR studies of 27Al and 29Si have now been enhanced and extended with new studies utilizing advanced methodologies (such as Multiple Quantum MAS) as well as studies of less-sensitive nuclei. In additional work, the issue of reactivity of clay minerals has been addressed, including studies of reactive surface area in the environment. Utilizations of NMR-sensitive nuclides within the clay minerals themselves, and in molecules that react with speci?c sites on the clay mineral surfaces, have aided in understanding the reactivity of these complex aluminosilicate systems.

  10. Segmented ceramic liner for induction furnaces

    DOE Patents [OSTI]

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

    1994-07-26T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

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

    SciTech Connect (OSTI)

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

    2011-03-01T23:59:59.000Z

    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.

  13. 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

  14. 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 Roberts, international data coordinator. Companies in the United States mined six types of clays: ball clay, bentonite, common clay and shale, fire clay, fuller's earth, and kaolin. Ball clays consist

  15. Beryllium liner implosion experiments on the Z accelerator in preparation for magnetized liner inertial fusion

    SciTech Connect (OSTI)

    McBride, R. D.; Martin, M. R.; Lemke, R. W.; Jennings, C. A.; Rovang, D. C.; Sinars, D. B.; Cuneo, M. E.; Herrmann, M. C.; Slutz, S. A.; Nakhleh, C. W.; Davis, J.-P.; Flicker, D. G.; Rogers, T. J.; Robertson, G. K.; Kamm, R. J.; Smith, I. C.; Savage, M.; Stygar, W. A.; Rochau, G. A.; Jones, M. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)] [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); and others

    2013-05-15T23:59:59.000Z

    Multiple experimental campaigns have been executed to study the implosions of initially solid beryllium (Be) liners (tubes) on the Z pulsed-power accelerator. The implosions were driven by current pulses that rose from 0 to 20 MA in either 100 or 200 ns (200 ns for pulse shaping experiments). These studies were conducted in support of the recently proposed Magnetized Liner Inertial Fusion concept [Slutz et al., Phys. Plasmas 17, 056303 (2010)], as well as for exploring novel equation-of-state measurement techniques. The experiments used thick-walled liners that had an aspect ratio (initial outer radius divided by initial wall thickness) of either 3.2, 4, or 6. From these studies, we present three new primary results. First, we present radiographic images of imploding Be liners, where each liner contained a thin aluminum sleeve for enhancing the contrast and visibility of the liner's inner surface in the images. These images allow us to assess the stability of the liner's inner surface more accurately and more directly than was previously possible. Second, we present radiographic images taken early in the implosion (prior to any motion of the liner's inner surface) of a shockwave propagating radially inward through the liner wall. Radial mass density profiles from these shock compression experiments are contrasted with profiles from experiments where the Z accelerator's pulse shaping capabilities were used to achieve shockless (“quasi-isentropic”) liner compression. Third, we present “micro-B-dot ” measurements of azimuthal magnetic field penetration into the initially vacuum-filled interior of a shocked liner. Our measurements and simulations reveal that the penetration commences shortly after the shockwave breaks out from the liner's inner surface. The field then accelerates this low-density “precursor” plasma to the axis of symmetry.

  16. Evaluation of alternative leachate liner materials

    E-Print Network [OSTI]

    Biles, Daniel Franklin

    1994-01-01T23:59:59.000Z

    environment. Five alternative liner materials were tested in this study: granular activated carbon, lignite, compost, peat moss, and powdered activated carbon produced from cotton gin trash. Three volatile organic compounds are used in this study: Benzene...

  17. Modeling Radionuclide Transport in Clays

    E-Print Network [OSTI]

    Zheng, L.

    2014-01-01T23:59:59.000Z

    Radionuclide Transport in Clays May 2012 Zheng, L. , J.a single sample of Opalinus Clay. Geochimica et Cosmochimicaadsorption onto kaolinite based clay minerals using FITEQL

  18. The First Pan American Geosynthetics Conference & Exhibition 2-5 March 2008, Cancun, Mexico

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    The First Pan American Geosynthetics Conference & Exhibition 2-5 March 2008, Cancun, Mexico. This paper presents results of mechanical tests in PET and PP nonwoven geotextiles that were exposed variations in tensile properties after exposure. The PET and PP geotextile samples became stiffer than fresh

  19. How to run and cement liners

    SciTech Connect (OSTI)

    Bowman, G.R.; Sherer, B.

    1988-09-01T23:59:59.000Z

    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.

  20. 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, and the world production tables were prepared by Linder Roberts, international data coordinator. Ball Clay.--In 2004, 4 companies mined ball clay from 47 pits in 4 States. Production of domestic ball clay

  1. CLAY AND SHALE--1999 18.1 CLAY AND SHALE

    E-Print Network [OSTI]

    CLAY AND SHALE--1999 18.1 CLAY AND SHALE By Robert L. Virta Domestic survey data and tables were Roberts, international data coordinator. The amount of clay sold or used by domestic producers in 1999. Production of ball clay, bentonite, common clay and shale, and fuller's earth increased, and production

  2. Backfill Stress and Strain Information within a Centrifuge Geosynthetic-Reinforced Slope Model under Working Stress and Large Soil Strain Conditions

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    Backfill Stress and Strain Information within a Centrifuge Geosynthetic-Reinforced Slope Model with a centrifuge test are used to investigate the mobilization of backfill stress and strain within a geosynthetic a centrifuge GRS slope model. Numerical results indicate that soil stress mobilization can be described

  3. CLAY AND SHALE--1998 R1 CLAY AND SHALE

    E-Print Network [OSTI]

    CLAY AND SHALE--1998 R1 CLAY AND SHALE By Robert L. Virta Domestic survey data and tables were of clay sold or used by domestic producers in 1998 was 41.6 million metric tons (Mt) valued at $1.66 billion, essentially unchanged from that of 1997. Production of ball clay and kaolin increased

  4. Construction, monitoring, and performance of two soil liners

    SciTech Connect (OSTI)

    Krapac, I.G.; Cartwright, K.; Hensel, B.R.; Herzog, B.L.

    1991-01-01T23:59:59.000Z

    A prototype and large-scale soil liner were constructed to test whether compacted soil barriers in cover and liner systems could be built to meet the standard set by the U.S. Environmental Protection Agency for saturated hydraulic conductivity. In situ ponded infiltration rates into the prototype liner were measured and water containing fluorescein and rhodamine WT dyers was allowed to infiltrate in the prototype liner. Although the liner met the USEPA conductivity requirement, the dye flow paths indicated a need for better bonding between lifts and a reduction in soil clod sizes. These observations suggested that if soil liners are to perform according to design specifications, soil processing prior to construction and rigid construction QA/QC are necessary. The large-scale liner (7.3 c 14.6 {times} 0.9 m) consisted of six 15-cm compacted lifts. Full-scale equipment was used for compaction, and construction practices were modified on the basis of experience gained from the prototype liner study. The work conducted so far indicates that compacted soil barriers can be constructed to meet the saturated hydraulic conductivity requirements established by the USEPA. Questions regarding methodologies to collect in situ infiltration data have arisen from the research. Differences have been noted in infiltration fluxes, as measured by different types of infiltrometers. Perturbations in measurements of infiltration rates and soil tensions have been correlated with barometric pressure fluctuations and/or temperature changes in the liner.

  5. Base reinforcement results from the addition of a geosynthetic at the bottom or within a base course to increase the structural or load-carrying capacity of a pavement system. While there is clear evidence that geosynthetic

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    course to increase the structural or load-carrying capacity of a pavement system. While there is clear evidence that geosynthetic reinforcements can lead to improved pavement performance, the identification, pavement structures deteriorate under the combined effects of traffic loading and environmental conditions

  6. Nondestructive evaluation of environmental barrier coatings in CFCC combustor liners.

    SciTech Connect (OSTI)

    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

    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.

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

    E-Print Network [OSTI]

    Thielmann, Stuart

    2012-01-01T23:59:59.000Z

    R. S. (2011). “Geomembrane damage due to static and cyclic66 Figure 4.10. GM damage results after shearing for Testsshear displacement on shear strength and GM damage for test

  8. Wellbore instability mechanisms in clays

    E-Print Network [OSTI]

    Akl, Sherif Adel

    2011-01-01T23:59:59.000Z

    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 ...

  9. Liners for ion transport membrane systems

    DOE Patents [OSTI]

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

    2010-08-10T23:59:59.000Z

    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.

  10. NEPA COMPLIANCE SURVEY Project Information Project Title: Liner...

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

    Liner Drilling Date: 4-5-10 DOE Code: 71092 Cont ractor Code: 8067-766 Project Lead: Frank Ingham Project Overview Nothing out of the ordinary for drilling an existing location 1....

  11. Expandable Metal Liner For Downhole Components

    DOE Patents [OSTI]

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

    2004-10-05T23:59:59.000Z

    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.

  12. Introduction Clays and health: An introduction

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Introduction Clays and health: An introduction "Clays are the materials for ceramics production" is the general idea of people about clays. However, clay minerals are not only the "most abundant components. Hundreds of uses reveal the utility of clays in very different fields (Odom, 1984; Jepson, 1984; Murray

  13. 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

  14. CLAY AND SHALE--2001 18.1 CLAY AND SHALE

    E-Print Network [OSTI]

    %), drilling mud (17%), foundry sand bond (20%), and iron ore pelletizing (14%) for bentonite; brick (55 achievable control technology (MACT) requirements for the clay processing and manufacturing industries or used. Clay production was reported in all States except Alaska, Delaware, Hawaii, Idaho, New Hampshire

  15. Multiscale modeling of clay-water systems

    E-Print Network [OSTI]

    Ebrahimi, Davoud

    2014-01-01T23:59:59.000Z

    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 ...

  16. A semi-analytic model of magnetized liner inertial fusion

    E-Print Network [OSTI]

    McBride, Ryan D

    2015-01-01T23:59:59.000Z

    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...

  17. Metal liner-driven quasi-isentropic compression of deuterium

    SciTech Connect (OSTI)

    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

    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.

  18. Assessment of damage to geomembrane liners by shredded scrap tires

    SciTech Connect (OSTI)

    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

    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.

  19. Five synthetic rubber pond liners protect against leakage and weather

    SciTech Connect (OSTI)

    Weinreich, G.; Hofsess, R.; Toy, D.A.

    1987-03-01T23:59:59.000Z

    More than 137 million cu ft of pipeline quality gas is produced daily at the Great Plains Coal Gasification Project in Beulah, ND. The facility is the only commercial plant in the US which produces gaseous and liquid fuels from low-grade coal. The plant needs to recycle and reuse 100% of the organic process wastewater, requiring a complicated treatment system of cooling towers, evaporators, a liquid waste incinerator and other units, each of which has its own surge pond. In total, the plant has five surge ponds which hold near 80 million gallons. To prevent the seepage of wastewater from the surge ponds into the ground water, a liner material was needed that would fulfill several design criteria. The liner had to be resistant to degradation caused by a very wide range of temperatures and it had to have a low coefficient of expansion. Resistance to both organic and inorganic chemical substances was another key requirement. Finally, the liner material needed to be easy to seam during field installation. An elastomeric membrane liner using the synthetic rubber and reinforcing polyester scrim best met the plant's requirements. One of the primary reasons for selecting synthetic rubber was its low coefficient of expansion. Extreme seasonal weather conditions, with temperatures ranging from below zero in the winter to over 100/sup 0/F in the summer, are common in North Dakota. And because the level of wastewater in the ponds constantly varies, a liner is frequently exposed to the elements. Overall, the synthetic rubber pond liners have performed through extreme weather conditions and have proven to be a cost-effective solution to wastewater storage at the gasification project.

  20. Clay Mathematics Proceedings Volume 12, 2009

    E-Print Network [OSTI]

    Sart, Remi

    Clay Mathematics Proceedings Volume 12, 2009 Renormalization in connected graded Hopf cO2008 Clay Mathemat* *ics Institute 1 #12

  1. Model to aid the design of composite landfill liners

    E-Print Network [OSTI]

    Mohammed, Kifayathulla

    1993-01-01T23:59:59.000Z

    MODEL TO AID THE DESI(iN OF COMPOSITE LANDFILL LINERS A Thesis by KIFAYATHULLA MOHAMMED Submitted to the School of Graduate Studies Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1993... Major Subject: Safety Engineering MODEL TO AID THE DESIGN OF COMPOSITE LANDFILL LINERS A Thesis by Kifayathulla Mohammed Approved as to style and content by: Kevin J. Mclnnes (Co-chairman of Committee) Richard P. Kon n (Member John P. Wagner...

  2. Thermal analysis of reinforced concrete chimneys with fiberglass plastic liners in uncontrolled fires

    E-Print Network [OSTI]

    Vaziri, Ashkan

    Available online xxxx Keywords: Reinforced concrete chimney FRP liners Uncontrolled fire Residual structural (FRP) liners based on experimentally deter- mined burning characteristics of the liner material of uncontrolled fire. Smoking or hot work inside the chimney during maintenance, ignition of stored flammable

  3. Bentonite mat demonstration. Final report

    SciTech Connect (OSTI)

    Serrato, M.G.

    1994-12-30T23:59:59.000Z

    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.

  4. Evaluation of a stack: A concrete chimney with brick liner

    SciTech Connect (OSTI)

    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

    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.

  5. FFTF in-containment cell liner design and installation experience

    SciTech Connect (OSTI)

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

    1980-01-01T23:59:59.000Z

    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.

  6. 225-B Pool Cell 5 Liner Leak Investigation

    SciTech Connect (OSTI)

    Rasmussen, J.H., Westinghouse Hanford

    1996-06-07T23:59:59.000Z

    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.

  7. Jamaican red clay tobacco pipes

    E-Print Network [OSTI]

    Heidtke, Kenan Paul

    1992-01-01T23:59:59.000Z

    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...

  8. Consideration of liners and covers in performance assessments

    SciTech Connect (OSTI)

    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

    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.

  9. Micro-beam friction liner and method of transferring energy

    DOE Patents [OSTI]

    Mentesana, Charles (Leawood, KS)

    2007-07-17T23:59:59.000Z

    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.

  10. Precision high energy liner implosion experiments PHELIX [1

    SciTech Connect (OSTI)

    Reass, William A [Los Alamos National Laboratory; Baca, David M [Los Alamos National Laboratory; Griego, Jeffrey R [Los Alamos National Laboratory; Reinovsky, Robert E [Los Alamos National Laboratory; Rousculp, Christopher L [Los Alamos National Laboratory; Turchi, Peter J [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    This paper describes the hardware design of a small megajoule sized transformer coupled pulse power system utilized to drive hydrodynamic liner experiments with a nominal current capability of 10 megAmperes. The resulting liner velocities and characteristics provide properties of physics interest. The capacitor banks utilize the ''Atlas'' plastic cased 60 kV, 60 kJ capacitors [2] and railgaps [3]. The air insulated marx'S are configured to dive a multi-filar toroidal transformer. The 4:1 multi-filar toroidal transformer is mechanically part of a circular disc line and this feature results in an attractive inductance budget. Because of the compact size, re-usable transformer, and resulting low maintenance cost, shot rates can be high compared to other ''large'' machines or explosively driven hydrodynamic methods. The PHELIX modeling, construction status, and test results will also be provided.

  11. Reliability-based condition assessment of steel containment and liners

    SciTech Connect (OSTI)

    Ellingwood, B.; Bhattacharya, B.; Zheng, R. [Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Civil Engineering

    1996-11-01T23:59:59.000Z

    Steel containments and liners in nuclear power plants may be exposed to aggressive environments that may cause their strength and stiffness to decrease during the plant service life. Among the factors recognized as having the potential to cause structural deterioration are uniform, pitting or crevice corrosion; fatigue, including crack initiation and propagation to fracture; elevated temperature; and irradiation. The evaluation of steel containments and liners for continued service must provide assurance that they are able to withstand future extreme loads during the service period with a level of reliability that is sufficient for public safety. Rational methodologies to provide such assurances can be developed using modern structural reliability analysis principles that take uncertainties in loading, strength, and degradation resulting from environmental factors into account. The research described in this report is in support of the Steel Containments and Liners Program being conducted for the US Nuclear Regulatory Commission by the Oak Ridge National Laboratory. The research demonstrates the feasibility of using reliability analysis as a tool for performing condition assessments and service life predictions of steel containments and liners. Mathematical models that describe time-dependent changes in steel due to aggressive environmental factors are identified, and statistical data supporting the use of these models in time-dependent reliability analysis are summarized. The analysis of steel containment fragility is described, and simple illustrations of the impact on reliability of structural degradation are provided. The role of nondestructive evaluation in time-dependent reliability analysis, both in terms of defect detection and sizing, is examined. A Markov model provides a tool for accounting for time-dependent changes in damage condition of a structural component or system. 151 refs.

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

    SciTech Connect (OSTI)

    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

    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.

  13. MATH 132: TOPOLOGY II: SMOOTH MANIFOLDS ANDREW COTTON-CLAY

    E-Print Network [OSTI]

    Cotton-Clay, Andrew

    MATH 132: TOPOLOGY II: SMOOTH MANIFOLDS ANDREW COTTON-CLAY 1. Introduction My Name: Andrew Cotton-Clay

  14. The Swelling of Clays Within Portland Brownstone

    E-Print Network [OSTI]

    Petta, Jason

    The Swelling of Clays Within Portland Brownstone Kelly Rich, Tim Wangler, George Scherer Civil within clay-bearing stone, causing damage to buildings QuickTimeTM and a TIFF (LZW) decompressor are needed to see this picture. Stressful! #12;Brownstone under SEM large quartz grains small clay flakes #12

  15. Stressed swelling clay Arpita Pal Bathija1

    E-Print Network [OSTI]

    Liang, Haiyi

    Stressed swelling clay Arpita Pal Bathija1 , Haiyi Liang2 , Ning Lu3 , Manika Prasad4 , and Michael Lee Batzle1 ABSTRACT Clay minerals are present in most sedimentary rocks. They find applicability- spite their abundance and use, swelling of clays under stress has not received enough scientific

  16. Lipid Peroxidation Induced by Expandable Clay Minerals

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Lipid Peroxidation Induced by Expandable Clay Minerals D A R I A K I B A N O V A , A N T O N I O N and toxicity. Herein, potential hazards of clay particle uptake areaddressed.Thispaperreportsthatthecontentanddistribution of structural Fe influence the ability of expandable clay minerals to induce lipid peroxidation (LP), a major

  17. Clay Minerals and Italy the Nannobacterial

    E-Print Network [OSTI]

    Yang, Zong-Liang

    Clay Minerals and Italy ­ the Nannobacterial Connection R. L. FOLK THE UNIVERSITY OF TEXAS AT AUSTIN This work is dedicated to F. Leo Lynch, a brilliant clay mineralogist who died in 2009. During Leo of nannobacterial precipitation of clay minerals were identified. (Lynch, 1994; Folk, Lynch & Rasbury, 1994). Leo

  18. PROGRAM AND ABSTRACTS FOR CLAY MINERALS SOCIETY

    E-Print Network [OSTI]

    Rathbun, Julie A.

    r PROGRAM AND ABSTRACTS FOR CLAY MINERALS SOCIETY 28th ANNUAL MEETING NI\\SI\\National Aeronautit &II LPI #12;PROGRAM AND ABSTRACTS FOR CLAY MINERALS SOCIETY 28th ANNUAL MEETING Houston, Texas October contains abstracts that have been accepted for presentation at the Clay Minerals Society 28th Annual

  19. CLAYS--2000 19.1 By Robert L. Virta

    E-Print Network [OSTI]

    CLAYS--2000 19.1 CLAYS By Robert L. Virta Domestic survey data and tables were prepared by Maria, international data coordinator. The amount of clay sold or used by domestic producers in 2000 was 40.8 million. Production of fire clay and fuller's earth increased, but production of ball clay, bentonite, common clay

  20. Liner/target/CMU cassette design and fabrication

    SciTech Connect (OSTI)

    Griego, Jeffrey Randall [Los Alamos National Laboratory

    2011-01-07T23:59:59.000Z

    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.

  1. Contact micromechanics in granular media with clay

    SciTech Connect (OSTI)

    Ita, S.L.

    1994-08-01T23:59:59.000Z

    Many granular materials, including sedimentary rocks and soils, contain clay particles in the pores, grain contacts, or matrix. The amount and location of the clays and fluids can influence the mechanical and hydraulic properties of the granular material. This research investigated the mechanical effects of clay at grain-to-grain contacts in the presence of different fluids. Laboratory seismic wave propagation tests were conducted at ultrasonic frequencies using spherical glass beads coated with Montmorillonite clay (SWy-1) onto which different fluids were adsorbed. For all bead samples, seismic velocity increased and attenuation decreased as the contact stiffnesses increased with increasing stress demonstrating that grain contacts control seismic transmission in poorly consolidated and unconsolidated granular material. Coating the beads with clay added stiffness and introduced viscosity to the mechanical contact properties that increased the velocity and attenuation of the propagating seismic wave. Clay-fluid interactions were studied by allowing the clay coating to absorb water, ethyl alcohol, and hexadecane. Increasing water amounts initially increased seismic attenuation due to clay swelling at the contacts. Attenuation decreased for higher water amounts where the clay exceeded the plastic limit and was forced from the contact areas into the surrounding open pore space during sample consolidation. This work investigates how clay located at grain contacts affects the micromechanical, particularly seismic, behavior of granular materials. The need for this work is shown by a review of the effects of clays on seismic wave propagation, laboratory measurements of attenuation in granular media, and proposed mechanisms for attenuation in granular media.

  2. Clays and Clay Minerals. Vol. 40. No.3, 355-358, 1992. THE EFFECT OF CLAY DISPERSION ON THE SORPTION OF

    E-Print Network [OSTI]

    Sparks, Donald L.

    Clays and Clay Minerals. Vol. 40. No.3, 355-358, 1992. NOTES THE EFFECT OF CLAY DISPERSION ON THE SORPTION OF ACETONITRILE Key Words-Clay dispersion, Organic sorption, Partition, Sorption mechanism of solutes on clay minerals and soil materials for systems in which no specific bonding was involved

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

    E-Print Network [OSTI]

    Crisosto, Carlos H.

    ) 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

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

    SciTech Connect (OSTI)

    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

    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.

  5. FIREBALL: Fusion Ignition Rocket Engine with Ballistic Ablative Lithium Liner

    SciTech Connect (OSTI)

    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

    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.

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

    SciTech Connect (OSTI)

    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

    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.

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

    E-Print Network [OSTI]

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

    2008-01-01T23:59:59.000Z

    healing and self-sealing processes in clays. Applied ClayScience, Clays in Natural and Engineered Barriers forsurface model for cohesive clays. Soils and Foundations,

  8. Application of a Novel Clay Stabilizer to Mitigate Formation Damage due to Clay Swelling

    E-Print Network [OSTI]

    Clarke, Timothy

    2014-12-09T23:59:59.000Z

    Clay swelling and fines migration can cause formation damage of hydrocarbon bearing zones and prevent economic realization of oil/gas wells. Identification and management of clay particles in the formation is a necessary component of production...

  9. Energy transfer through a multi-layer liner for shaped charges

    DOE Patents [OSTI]

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

    1985-01-01T23:59:59.000Z

    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.

  10. 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...

  11. 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....

  12. Aging of steel containments and liners in nuclear power plants

    SciTech Connect (OSTI)

    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

    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.

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

    DOE Patents [OSTI]

    Morrison, John L. (Idaho Falls, ID)

    2001-04-24T23:59:59.000Z

    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.

  14. 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...

  15. Formation of Imploding Plasma Liners for HEDP and MIF Application

    SciTech Connect (OSTI)

    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

    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

  16. 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...

  17. Problems in interpretation of clay fabrics

    SciTech Connect (OSTI)

    Reynolds, S.

    1987-05-01T23:59:59.000Z

    Several models have been developed to explain the origins of different clay fabrics as seen with the scanning electron microscope, but some of these models may be oversimplified. One microfabric model suggests that bioturbation leads to a randomization of fabric; nonbioturbated fabrics should exhibit a preferred orientation (PO) of clay particles in the horizontal direction. However, in samples from the Los Angeles basin, California, it was discovered that bioturbated, hemipelagic mudstones had essentially the same clay fabric as nonbioturbated, turbiditic mudstones; both were highly random. The effect of bioturbation was also studied in anoxic-laminated, nonbioturbated muds which exhibited isolated burrows (Pico Formation, Rosario Group, California; Niobrara Formation, Colorado). The clay fabric inside and outside the burrows was similar; diagenesis appeared to be the controlling factor of these microfabrics. Another common conception is that PO of clays is developed during consolidation. The only PO seen in the samples from the Los Angeles basin is of silt-sized detrital micas and diagenetic chlorite. Much of the PO which has been measured in recent sediments may be due to the PO of silt-sized micas, not clays; and PO in shales may be due to diagenetic growth of phyllosilicates under uniaxial pressure. Another model states that pelagic settling of clays will lead to the development of PO. The nonbioturbated mudstones of the Pico Formation display random clay fabrics in both pelagic and turbiditic sediments. These results are not meant to disprove previous clay fabric studies but instead are intended as a warning against oversimplification of the origin and significance of clay fabrics.

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

    E-Print Network [OSTI]

    Speake, Robert Cary

    1986-01-01T23:59:59.000Z

    , 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...

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

    SciTech Connect (OSTI)

    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

    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.

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

    SciTech Connect (OSTI)

    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

    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.

  1. Silicate emissions in active galaxies - From LINERs to QSOs

    E-Print Network [OSTI]

    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

    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.

  2. Oxidation of pyrite in marine clays and zinc adsorption by clays

    SciTech Connect (OSTI)

    Ohtsubo, Masami [Kyushu Univ., Fukuoka (Japan). Dept. of Agricultural Engineering

    1995-12-31T23:59:59.000Z

    The oxidation of pyrite in marine clays exposed to a subaerial environment was confirmed and was determined to be well correlated with decreased adsorption of zinc by the clays. The production of sulfuric acid and iron oxide by this oxidation and the accompanying decrease in pH was demonstrated based on an investigation of the chemistry of the marine clay profile and laboratory incubation tests for remolded clay samples. Both pH decrease and the production of iron oxides reduced the zinc adsorption capability of the clays. This suggests that the zinc adsorbed by the marine clays would be released into the pore water due to exposure of the sediment surface to the atmosphere.

  3. Clay : Pottery, Sculpture, and .... Joan Watson, Program Director

    E-Print Network [OSTI]

    Hayden, Nancy J.

    1 Clay : Pottery, Sculpture, and .... Joan Watson, Program Director OVERVIEW The Clay: Pottery, Sculpture and... Program aims to cultivate a working knowledge of clay techniques based on a study of historic and contemporary ceramics. The program will enroll students who have prior clay experience

  4. An Interpretation of Secondary Consolidation for the Batiscan Clay

    E-Print Network [OSTI]

    An Interpretation of Secondary Consolidation for the Batiscan Clay Gilberto F. Alexandre, D of the phenomena of secondary consolidation for the sensitive Batiscan clay, a Champlain sea deposit from eastern a model for natural clays which was success- fully applied to Champlain Sea clays. The model can

  5. The Swelling of Clays Within Stone Angela Wylykanowitz

    E-Print Network [OSTI]

    Petta, Jason

    The Swelling of Clays Within Stone Angela Wylykanowitz REU Program Advisor: George Scherer://www.nps.gov/azru/adhi/fig112.jpg http://www.angkorwat.org #12;Why do Clays Swell? - Clays contain negative charges balanced - Organic chain keeps the water out - Organic chain should have charged ends to bond to sheets of clay

  6. Preparation and Properties of Recycled HDPE/Clay Hybrids

    E-Print Network [OSTI]

    Preparation and Properties of Recycled HDPE/Clay Hybrids Yong Lei,1 Qinglin Wu,1 Craig M. Clemons2 on recycled high density poly- ethylene (RHDPE) and organic clay were made by melt com- pounding. The influence of blending method, compatibil- izers, and clay content on clay intercalation and exfoliation

  7. TIME DOMAIN REFLECTOMETRY MEASUREMENT AND HIGHLY PLASTIC CLAYS

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    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

  8. 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

  9. Study of Plasma Liner Driven Magnetized Target Fusion via Advanced Simulations

    SciTech Connect (OSTI)

    Samulyak, Roman V. [SUNY Stony Brook; Parks, Paul [General Atomics

    2013-08-31T23:59:59.000Z

    The feasibility of the plasma liner driven Magnetized Target Fusion (MTF) via terascale numerical simulations will be assessed. In the MTF concept, a plasma liner, formed by merging of a number (60 or more) of radial, highly supersonic plasma jets, implodes on the target in the form of two compact plasma toroids, and compresses it to conditions of the fusion ignition. By avoiding major difficulties associated with both the traditional laser driven inertial confinement fusion and solid liner driven MTF, the plasma liner driven MTF potentially provides a low-cost and fast R&D path towards the demonstration of practical fusion energy. High fidelity numerical simulations of full nonlinear models associated with the plasma liner MTF using state-of-art numerical algorithms and terascale computing are necessary in order to resolve uncertainties and provide guidance for future experiments. At Stony Brook University, we have developed unique computational capabilities that ideally suite the MTF problem. The FronTier code, developed in collaboration with BNL and LANL under DOE funding including SciDAC for the simulation of 3D multi-material hydro and MHD flows, has beenbenchmarked and used for fundamental and engineering problems in energy science applications. We have performed 3D simulations of converging supersonic plasma jets, their merger and the formation of the plasma liner, and a study of the corresponding oblique shock problem. We have studied the implosion of the plasma liner on the magnetized plasma target by resolving Rayleigh-Taylor instabilities in 2D and 3D and other relevant physics and estimate thermodynamic conditions of the target at the moment of maximum compression and the hydrodynamic efficiency of the method.

  10. 2005 Minerals Yearbook CLAY AND SHALE

    E-Print Network [OSTI]

    production was in Ohio, where the clays are mainly underclays associated with coal. Domestic production data and less slurried product were sold or used in 2005 than in 2004. Operations in Tennessee supplied 61

  11. Natural Radioactivity of Boron Added Clay Samples

    SciTech Connect (OSTI)

    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

    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.

  12. Origin of the high sensitivity of Chinese red clay soils to drought: significance of the clay characteristics

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Origin of the high sensitivity of Chinese red clay soils to drought: significance of the clay d'Ulm 75230, Paris, France *Corresponding author: Ary.Bruand@univ-orleans.fr Abstract The red clay but the origin of this high sensitivity to drought remains unclear. Several red clay soils were selected

  13. Clay minerals in the Meuse -Haute Marne underground laboratory (France): Possible influence of organic matter on clay mineral evolution

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Clay minerals in the Meuse - Haute Marne underground laboratory (France): Possible influence of organic matter on clay mineral evolution Francis Claret1,2,* , Boris A. Sakharov3 , Victor A. Drits3 words: Callovo-Oxfordian, Clay minerals, Clay diagenesis, Illite-smectite, Mixed- layering

  14. CLAY MINERALOGY ACROSS THE P-T BOUNDARY OF THE XIAKOU SECTION, CHINA: EVIDENCE OF CLAY PROVENANCE AND ENVIRONMENT

    E-Print Network [OSTI]

    Li, Zhaohui

    CLAY MINERALOGY ACROSS THE P-T BOUNDARY OF THE XIAKOU SECTION, CHINA: EVIDENCE OF CLAY PROVENANCE, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan Abstract--The provenance of clays with an oriented arrangement of detrital clay particles, consisting mainly of illite and minor chlorite

  15. On The Thermal Consolidation Of Boom Clay

    E-Print Network [OSTI]

    Delage, Pierre; Cui, Yu-Jun

    2012-01-01T23:59:59.000Z

    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...

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

    SciTech Connect (OSTI)

    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

    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)

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

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Clay and non-clay minerals in the pharmaceutical industry Part I. Excipients and medical form 17 July 2009 Accepted 22 July 2009 Available online 29 July 2009 Keywords: Minerals Pharmaceutical industry Excipients Medical applications Physical and physico-chemical properties Minerals are widely used

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

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Review Article Clay and non-clay minerals in the pharmaceutical and cosmetic industries Part II in revised form 15 October 2009 Accepted 22 October 2009 Available online 31 October 2009 Keywords: Minerals range and variety of minerals are used in the pharmaceutical industry as active ingredients

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

    E-Print Network [OSTI]

    Anca Constantin; Michael S. Vogeley

    2006-12-15T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Randall T. Cygan

    2007-06-01T23:59:59.000Z

    “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.

  1. Natural rubber-clay nanocomposites: mechanical and structural properties

    E-Print Network [OSTI]

    Camila A. Rezende; Fabio C. Bragança; Telma R. Doi; Lay-Theng Lee; Fernando Galembeck; François Boué

    2010-06-27T23:59:59.000Z

    The mechanical properties of non-vulcanized natural rubber and dialyzed natural rubber-clay nanocomposites have been studied by uniaxial deformations to evaluate the reinforcement efficiency of the clay. We show that while non-rubber molecules contribute to auto-reinforcement, removal of these molecules improves significantly the performance of clay as reinforcement agent. These mechanical properties are discussed in relation to morphological aspects of the clay characterized by TEM and SANS. The nanocomposites prepared by "latex-mixing" with aqueous dispersions of clay are found to contain completely exfoliated clay lamellae in coexistence with tactoids. Improved mechanical properties of the nanocomposites can be modeled by the high aspect ratio of exfoliated clay platelets coupled with immobilized rubber matrix. Interestingly, presence of tactoids does not appear to compromise the excellent reinforcement properties of the exfoliated platelets. At high deformations, strain-induced alignment of the clay exhibits anisotropic scattering, with anisotropy increasing with clay concentration and stretching.

  2. Estimating Undrained Strength of Clays from Direct Shear Testing at Fast Displacement Rates

    E-Print Network [OSTI]

    Bro, Andrew D; Stewart, Jonathan P; Pradel, Daniel E

    2013-01-01T23:59:59.000Z

    for stability of soft clays,” J. Geotech. Engrg. , ASCE,behavior of saturated clay,” J. Geotech. Engrg. , ASCE,Undrained Strength of Clays from Direct Shear Testing at

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

    E-Print Network [OSTI]

    Zheng, L.

    2010-01-01T23:59:59.000Z

    experiment in Opalinus Clay for the management ofconductivity of the Opalinus clay at a regional scale:1953. Adsorption studies on clay minerals. II. A formulation

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

    SciTech Connect (OSTI)

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

    1989-03-21T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

  6. Organic or organometallic template mediated clay synthesis

    DOE Patents [OSTI]

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

    1994-05-03T23:59:59.000Z

    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.

  7. Organic or organometallic template mediated clay synthesis

    DOE Patents [OSTI]

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

    1994-01-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    1995-10-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

  10. 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationin UrbanCity ofCity ofInformationClaridgeClassicClay CountyClay

  11. Clay Mathematics Proceedings FRACTAL AND MULTIFRACTAL PROPERTIES OF SLE

    E-Print Network [OSTI]

    Lawler, Gregory F.

    Clay Mathematics Proceedings FRACTAL AND MULTIFRACTAL PROPERTIES OF SLE Gregory F. Lawler Introduction This is a slightly expanded version of my lectures at the 2010 Clay Mathematics Institute summer

  12. Characterization of Gulf of Mexico Clay Using Automated Triaxial Testing

    E-Print Network [OSTI]

    Murali, Madhuri

    2012-02-14T23:59:59.000Z

    . This thesis presents the results of SHANSEP triaxial testing performed on undisturbed samples of Gulf of Mexico clay. Background information is given about the clay, the sampling program and the laboratory testing program. The GEOTAC Truepath automated stress...

  13. 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

  14. Evaluation of an adjoint-based liner impedance eduction J. Primus, E. Piot and F. Simon

    E-Print Network [OSTI]

    Boyer, Edmond

    impedance with grazing flow. Dean [1] introduced an in-situ technique relying on two microphone measurements impedance which minimizes the error between numerical simulations and a set of measured data. The methodEvaluation of an adjoint-based liner impedance eduction technique J. Primus, E. Piot and F. Simon

  15. MATH 118A: INTRODUCTION TO REAL ANALYSIS ANDREW COTTON-CLAY

    E-Print Network [OSTI]

    Akhmedov, Azer

    MATH 118A: INTRODUCTION TO REAL ANALYSIS ANDREW COTTON-CLAY 1. Introduction My Name: Andrew Cotton-Clay

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

    SciTech Connect (OSTI)

    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

    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.

  17. PROPERTIES AND APPLICATIONS OF PALYGORSKITE-SEPIOLITE CLAYS

    E-Print Network [OSTI]

    Ahmad, Sajjad

    PROPERTIES AND APPLICATIONS OF PALYGORSKITE-SEPIOLITE CLAYS E. GALAN Departamento de Cristalografi, Spain (Received 20 February 1996; revised 9 May 1996) ABSTRACT: The palygorskite-sepiolite group of clay composition of the clay and its basic physical and physico-chemical parameters must be determined. Then some

  18. An Interpretation of Secondary Consolidation for the Batiscan Clay

    E-Print Network [OSTI]

    Boyer, Edmond

    An Interpretation of Secondary Consolidation for the Batiscan Clay Gilberto F. Alexandre, D of the phenomena of secondary consolidation for the sensitive Batiscan clay, a Champlain sea deposit from eastern) Leroueil et al. (1985) proposed a model for natural clays which was success- fully applied to Champlain Sea

  19. EXTENDING THE PREDICTION OF THE THERMODYNAMIC PROPERTIES OF CLAY

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    EXTENDING THE PREDICTION OF THE THERMODYNAMIC PROPERTIES OF CLAY MINERALS TO THE TRAPPING OF TRACE The thermodynamic properties of clay minerals, which control the stability of these minerals in solution, are still are parameterised using a given set of minerals. For clay minerals, the latter are mainly composed by Si, Al, Fe

  20. Role of impact excavation in distributing clays over Noachian surfaces

    E-Print Network [OSTI]

    Nimmo, Francis

    Role of impact excavation in distributing clays over Noachian surfaces C. J. Barnhart1 and F. Nimmo in the ejecta as a function of distance from the crater's rim. Generally, the volume percentage of clays fraction of claypoor material because they excavate to greater depths at which clays are likely absent

  1. Virtual Clay: Haptics-based Deformable Solids of Arbitrary Topology

    E-Print Network [OSTI]

    McDonnell, Kevin

    Virtual Clay: Haptics-based Deformable Solids of Arbitrary Topology Kevin T. McDonnell and Hong Qin|qin}@cs.sunysb.edu Abstract. This paper presents Virtual Clay as a novel, interactive, dy- namic, haptics-based deformable solid of arbitrary topology. Our Virtual Clay methodology is a unique, powerful visual modeling paradigm

  2. Effect of Intermediate Principal Stress on Overconsolidated Kaolin Clay

    E-Print Network [OSTI]

    Prashant, Amit

    Effect of Intermediate Principal Stress on Overconsolidated Kaolin Clay Amit Prashant1 and Dayakar of overconsolidated kaolin clay is investigated using three-dimensional true triaxial testing on cubical specimens specimens under stress and strain-control modes. Undrained tests on kaolin clay show that the following vary

  3. Synthetic clay-magnetite aggregates designed for controlled deposition experiments

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    Synthetic clay-magnetite aggregates designed for controlled deposition experiments Feinberg, J M of synthetic clay-magnetite aggregates whose physical attributes can be tailored for controlled depositional orientation or oriented aggregation. Grain size distributions of magnetite in three different clay

  4. CEMENT/CLAY INTERACTIONS A REVIEW: EXPERIMENTS, NATURALANALOGUES, AND MODELING.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 CEMENT/CLAY INTERACTIONS ­ A REVIEW: EXPERIMENTS, NATURALANALOGUES, AND MODELING. Eric C. Gaucher that will be in contact with the clay material of the engineered barriers as well as with the geological formation. France, Switzerland and Belgium are studying the option of clayey geological formations. The clay and cement media

  5. The Link between Clay Mineral Weathering and the Stabilization of

    E-Print Network [OSTI]

    Sparks, Donald L.

    The Link between Clay Mineral Weathering and the Stabilization of Ni Surface Precipitates R O B E R 19717 The formation of transition-metal surface precipitates may occur during sorption to clay minerals formation are poorly understood. We monitored changes in the reversibility of Ni sorbed to a clay mineral

  6. Clay Mathematics Proceedings Noncommutative Geometry and Number Theory

    E-Print Network [OSTI]

    Tretkoff, Paula

    Clay Mathematics Proceedings Noncommutative Geometry and Number Theory Paula B. Cohen Introduction of the Riemann Hypothesis, from which we quote several times, is given by Enrico Bombieri on the Clay Mathematics Mathematics Subject Classification 11J06, 58B34. The author acknowledges support from the Clay Foundation. c

  7. UNL Researchers Studying SDI Technology Near Clay Center

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    UNL Researchers Studying SDI Technology Near Clay Center By Steve Ress University of Nebraska researchers have been burying plastic drip irrigation tubing in fields near Clay Center to get a better idea a previously dryland, 33-acre cornfield at UNL's South Central Agricultural Laboratory near Clay Center . Drip

  8. Clay Mathematics Proceedings Kahler-Ricci flow on complete manifolds

    E-Print Network [OSTI]

    Ni, Lei

    Clay Mathematics Proceedings K¨ahler-Ricci flow on complete manifolds Lei Ni Abstract. This is a paper based on author's lectures delivered at the 2005 Clay Mathematics Institute summer school at MSRI The 2005 Clay Mathematics Institute summer school at MSRI focused on Perel- man's work on Ricci flow

  9. A New Environmentally Friendly AL/ZR-Based Clay Stabilizer

    E-Print Network [OSTI]

    El-Monier, Ilham Abdallah

    2013-01-18T23:59:59.000Z

    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...

  10. 2D and 3D high-resolution imaging to reconstruct the microstructure of clay media

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2D and 3D high-resolution imaging to reconstruct the microstructure of clay media J.C. Robinet1 & S compacted clay (illite) system, considered to be an analogy for the clay matrix constituting clay-rocks, and three different clayrocks (Callovo-Oxfordian argilites (FR), Opalinus Clay (CH), Boom Clay (BE)). Part

  11. Sorption of cadmium and lead by clays from municipal incinerator ash-water suspensions

    SciTech Connect (OSTI)

    Roy, W.R.; Krapac, I.G.; Steele, J.D. [Illinois State Geological Survey, Champaign, IL (United States)

    1993-07-01T23:59:59.000Z

    The effect of Cl complexation in extracts of a flue gas-scrubber incinerator fly ash sample on the sorption of Cd and Ph by kaolinite and illite was investigated using batch-sorption methods. In the pH range of 5 to 9, Cl complexation may reduce sorption and thus increase the mobility of these metals. When an ash-water suspension was acidified to pH 6.85, the dissolution of Cl and Ca essentially eliminated Cd sorption because of complexation and cationic competition. Cadmium would be considered as either mobile or very mobile under these conditions. Lead was not soluble in the pH-6.85 suspension. At pH 12, the approximate pH of water in contact with flue gas-scrubber fly ash, Cd was essentially insoluble and Ph occurred as anionic Ph hydroxide. Anionic Ph was sorbed by the two clays, and the extent of sorption was not influenced by Cl or carbonate complexation. Sorption constants, derived from isotherms, suggested that Ph would be relatively immobile in saturated soil-water systems. The recent concern that highly alkaline, flue gas-scrubber fly ash may release environmentally significant concentrations of mobile Ph when placed in an ash-disposal site with a soil liner should be reevaluated in light of this study. 37 refs., 6 figs., 3 tabs.

  12. Running heading: Water retention properties of the clay in clayey soils Water retention properties of the clay in soils developed

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Running heading: Water retention properties of the clay in clayey soils Water retention properties of the clay in soils developed on clayey sediments: Significance of parent material and soil of clayey subsoils horizons according to the variation of clay characteristics. The horizons studied

  13. Coatings and films derived from clay/wax nanocomposites

    DOE Patents [OSTI]

    Chaiko, David J.; Leyva, Argentina A.

    2006-11-14T23:59:59.000Z

    The invention provides methods for making clay/wax nanocomposites and coatings and films of same with improved chemical resistance and gas barrier properties. The invention further provides methods for making and using emulsions of such clay/wax nanocomposites. Typically, an organophillic clay is combined with a wax or wax/polymer blend such that the cohesion energy of the clay matches that of the wax or wax/polymer blend. Suitable organophilic clays include mica and phyllosilicates that have been surface-treated with edge or edge and surface modifying agents. The resulting nanocomposites have applications as industrial coatings and in protective packaging.

  14. Influence of formation clays on the flow of aqueous fluids

    SciTech Connect (OSTI)

    Hower, W.F.

    1981-01-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Chen, Haijie

    2008-01-01T23:59:59.000Z

    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 ...

  16. An investigation of the effect of a propellant liner in the launch tube of a hypervelocity accelerator 

    E-Print Network [OSTI]

    Schappaugh, Ronald Dean

    1967-01-01T23:59:59.000Z

    from a five foot one-eighth inch diameter launch tube. 20 CHAPTER IV EXPERINENTAL FACILITIES AND EQUIPMENT Accelerator To test the effect of a propellant liner, a powder gun accelerator was designed in such a manner to permit coating...'. "" 1 . h 22 entering the tube. 1t was thought that the propellant liner would more readily ignite, if the projectile had an initial velocity when it entered the coated tube. The system was designed so that the pistol could be triggered...

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

    SciTech Connect (OSTI)

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

    1993-03-01T23:59:59.000Z

    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.

  18. Use of rubber and bentonite added fly ash as a liner material

    SciTech Connect (OSTI)

    Cokca, Erdal; Yilmaz, Zeka

    2004-07-01T23:59:59.000Z

    In many countries regulations require all hazardous waste disposal facilities to be lined with suitable impermeable barriers to protect against contamination. In this study, a series of laboratory tests on rubber and bentonite added fly ash were conducted. The aim of the tests was to evaluate the feasibility of utilizing fly ash, rubber and bentonite as a low hydraulic conductivity liner material. Type C fly ash was obtained from Soma thermal power plant in Turkey; rubber in pulverized form was waste from the retreading industry. To investigate the properties of rubber and bentonite added fly ash, hydraulic conductivity, leachate analysis, unconfined compression, split tensile strength, one-dimensional consolidation, swell and freeze/thaw cycle tests were performed. The overall evaluation of results have revealed that rubber and bentonite added fly ash showed good promise and a candidate for construction of a liner.

  19. Clay mineral reactions in clastic diagenesis

    SciTech Connect (OSTI)

    Hower, J.

    1983-03-01T23:59:59.000Z

    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.

  20. The CONVEX Liner Add-On to the DIAMOND-FORTUNE event

    SciTech Connect (OSTI)

    Heuze, F.E. [Lawrence Livermore National Lab., CA (United States); Swift, R.P. [Los Alamos National Lab., NM (United States); Hill, L.R.; Barrett, W.H. [Sandia National Labs., Albuquerque, NM (United States)

    1993-11-15T23:59:59.000Z

    This report describes the execution of the CONVEX Liner Add-On to the DIAMOND FORTUNE low-yield cavity test of the Defense Nuclear Agency. CONVEX stands for COntained Nuclear Vessel EXperiment. It concerns the design of underground chambers where repeated low-yield nuclear explosions could be conducted. The approach proposed by the first author in the early 1980`s was to engineer a steel-lined rock cavern where the steel liner would be prestressed against the rock by tendons and/or bolts. These would daylight in tunnels surrounding the main cavity. From there, they could be initially tensioned and retensioned, if needed, after each test. The CONVEX Liner Add-On to DIAMOND FORTUNE consisted of anchoring a 1.4-m square, 2.5-cm thick steel plate to the wall of the cavity, using a 5-cm diameter center bolt, and four 2.5-cm diameter comer bolts. The bolts daylighted in a drift surrounding the gallery, and separated from it by a 9-m thick rock pillar. The liner plate, the bolts, and the rock pillar were equipped with 23 gages to describe the thermal and mechanical response of the system during pretensioning, during the dynamic loading phase, and post-test. Particular emphasis was given to obtaining the response both upon loading and during the rebound of the system, in order to determine whether the plate ever separated from the rock. So, the main operational objectives of this project were to acquire response data of the system under nuclear loading and to ascertain the status of contact between the steel plate and the rock, as shown by toadstool data and bolt tension data. The instrumentation and data acquisition system performed extremely well. Data were recorded during the dynamic phase; plate temperature was monitored for several hours after the test; and the remaining tension was obtained for several bolts more than three months after the test, upon re-entry in the runaround drift.

  1. Device and method for imploding a microsphere with a fast liner

    DOE Patents [OSTI]

    Thode, Lester E. (Los Alamos, NM)

    1981-01-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    2011-01-07T23:59:59.000Z

    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.

  3. Inferred performance of surface hydraulic barriers from landfill operational data

    SciTech Connect (OSTI)

    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

    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.

  4. 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]

    Zornberg, Jorge G.

    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

  5. Geohydromechanical Processes in the Excavation Damaged Zone in Crystalline Rock, Rock Salt, and Indurated and Plastic Clays

    E-Print Network [OSTI]

    Tsang, Chin-Fu; Bernier, Frederic; Davies, Christophe

    2004-01-01T23:59:59.000Z

    and pore pressure in clays. Proceedings of the Internationalcoupling effects in the Boom clay, Mol Underground ResearchElorza 2004, 2003, CILPEX: Clay Instrumentation Programme

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

    E-Print Network [OSTI]

    Liu, H.H.

    2012-01-01T23:59:59.000Z

    disturbed zone in the Opalinus Clay of the Mont Terri Rockweak mudstone (Opalinus Clay) at low stresses, InternationalHydraulic conductivity of clays in confined tests under low

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

    E-Print Network [OSTI]

    Liu, H.H.

    2012-01-01T23:59:59.000Z

    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-

  8. 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...

  9. A Chandra Snapshot Survey of IR-bright LINERs: A Possible Link Between Star Formation, AGN Fueling, and Mass Accretion

    E-Print Network [OSTI]

    R. P. Dudik; S. Satyapal; M. Gliozzi; R. M. Sambruna

    2004-10-13T23:59:59.000Z

    We present results from a high resolution X-ray imaging study of nearby LINERs observed by Chandra. This study complements and extends previous X-ray studies of LINERs, focusing on the under-explored population of nearby dust-enshrouded infrared-bright LINERs. The sample consists of 15 IR-bright LINERs (L_FIR/L_B > 3), with distances that range from 11 to 26 Mpc. Combining our sample with previous Chandra studies we find that ~ 51% (28/55) of the LINERs display compact hard X-ray cores. The nuclear 2-10 keV luminosities of the galaxies in this expanded sample range from ~ 2 X 10^38 ergs s^-1 to ~ 2 X 10^44 ergs s^-1. We find an intriguing trend in the Eddington ratio vs. L_FIR and L_FIR/L_B for the AGN-LINERs in the expanded sample that extends over seven orders of magnitude in L/L_Edd. This correlation may imply a link between black hole growth, as measured by the Eddington ratio, and the star formation rate (SFR), as measured by the far-IR luminosity and IR-brightness ratio. If the far-IR luminosity is an indicator of the molecular gas content in our sample of LINERs, our results may further indicate that the mass accretion rate scales with the host galaxy's fuel supply. We discuss the potential implications of our results in the framework of black hole growth and AGN fueling in low luminosity AGN. (Abridged)

  10. 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformation SmyrnaNewClay Electric Cooperative, Inc Jump to:

  11. 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

  12. Improved geomembrane damage/leak detection through co-extrusion technology

    SciTech Connect (OSTI)

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

    1994-04-01T23:59:59.000Z

    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.

  13. Role of clay minerals on the carbonate chemistry in a marine clay formation Lerouge C., Grangeon S., Mazurek M., Wille G.

    E-Print Network [OSTI]

    Boyer, Edmond

    Role of clay minerals on the carbonate chemistry in a marine clay formation Lerouge C., Grangeon S., Mazurek M., Wille G. Samples from different levels of the Opalinus clay formation at Benken were studied. At the scale of the formation, the trace element content in calcite is anticorrelated with clay content

  14. 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]

    Rock, Chris

    The Don-Kay-Clay Cash Foundation The Don-Kay-Clay Cash Foundation was established in 1997 services. It was set up by Don and Kay Cash and their son, Clay, all graduates of Texas Tech University and is now a retired English teacher. Kay is the Secretary-Treasurer of the family foundation. Clay earned

  15. The washability of lignites for clay removal

    SciTech Connect (OSTI)

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

    2008-07-01T23:59:59.000Z

    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.

  16. Specificity and randomness in the visual cortex Kenichi Ohki and R Clay Reid

    E-Print Network [OSTI]

    Born, Richard

    Specificity and randomness in the visual cortex Kenichi Ohki and R Clay Reid Research 02115, USA Corresponding author: Reid, R Clay (clay_reid@hms.harvard.edu) Current Opinion

  17. Uncertainty in the reactive transport model response to an alkaline perturbation in a clay formation

    E-Print Network [OSTI]

    Burnol, A.; Blanc, P.; Xu, T.; Spycher, N.; Gaucher, E.C.

    2006-01-01T23:59:59.000Z

    degradation of a concrete/clay interface, in Migration'05 -an alkaline plume in a clay barrier, Applied Geochemistry,AN ALKALINE PERTURBATION IN A CLAY FORMATION A. Burnol*, P.

  18. Clay County Extension Center 2463 State Road 16 West~ Green Cove Springs

    E-Print Network [OSTI]

    Florida, University of

    Clay County Extension Center 2463 State Road 16 West~ Green Cove Springs next to the Clay CountyPurchases support your community...your community... The Master Gardeners of UF/IFAS Extension Clay County work

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

    E-Print Network [OSTI]

    Berti, Debora

    2005-02-17T23:59:59.000Z

    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...

  20. ... FIELD TRIP GUIDEBOOK ON ENVIRONMENTAL IMPACT OF CLAYS

    E-Print Network [OSTI]

    Rathbun, Julie A.

    ... 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

  1. Modeling of strain rate effects on clay in simple shear

    E-Print Network [OSTI]

    Jung, Byoung Chan

    2006-08-16T23:59:59.000Z

    of strain rate on clays in simple shear conditions. The response of clay soils is highly dependent on the rate of strain for both effective stress path and stress-strain behavior. The undrained shear strength is strongly influenced by strain rate both...

  2. Testing of Expansive Clays in a Centrifuge Permeameter

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    Testing of Expansive Clays in a Centrifuge Permeameter M. D. Plaisted & J. G. Zornberg with the objective of characterizing the swelling of highly plastic clays using a centrifuge permeameter. The new. This study, conducted using a comparatively simple, non- instrumented centrifuge device complements ongo- ing

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

  4. Investigation of wall friction in noncircular ducts with a rough liner

    E-Print Network [OSTI]

    Tyler, John Charles

    1959-01-01T23:59:59.000Z

    section Density Viscosity Dimensions L5/Q L/Q m/L& m/LQ 1. The friction factors, Reynolds numbers, and. abso- lute roughnesses for fluid flow in ducts having a glass fiber liner have been calculated and plotted in the form of characteristic... distributed, it is essential that the wall friction phenomena associated with the particular duct design be understood. When fluid is passed through a duct, a static pressure drop occurs due to the friction forces which act between the fluid. particles...

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

    SciTech Connect (OSTI)

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

    2000-01-26T23:59:59.000Z

    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.

  6. Fire Clay coal and sandstone washouts

    SciTech Connect (OSTI)

    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

    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.

  7. Leak detection systems for uranium mill tailings impoundments with synthetic liners

    SciTech Connect (OSTI)

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

    1983-09-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Slough, John

    2011-12-10T23:59:59.000Z

    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.

  9. Semi-permeable vesicles composed of natural clay

    E-Print Network [OSTI]

    Anand B. Subramaniam; Jiandi Wan; Arvind Gopinath; Howard A. Stone

    2010-11-22T23:59:59.000Z

    We report a simple route to form robust, inorganic, semi-permeable compartments composed of montmorillonite, a natural plate-like clay mineral that occurs widely in the environment. Mechanical forces due to shear in a narrow gap assemble clay nanoplates from an aqueous suspension onto air bubbles. Translucent vesicles suspended in a single-phase liquid are produced when the clay-covered air bubbles are exposed to a variety of water-miscible organic liquids. These vesicles of clay are mechanically robust and are stable in water and other liquids. The formation of clay vesicles can be described by a physical mechanism that recognizes changes in the wetting characteristics of clay-covered air bubbles in organic liquids. The clay vesicles are covered with small pores and so intrinsically exhibit size-selective permeability, which allows spontaneous compartmentalization of self-assembling molecules in aqueous environments. The results we report here expand our understanding of potential paths to micro-compartmentalization in natural settings and are of relevance to theories of colloidal aggregation, mineral cycles, and the origins of life.

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

    SciTech Connect (OSTI)

    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

    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.

  11. Potassium Fixation and Supply by Soils with Mixed Clay Minerals.

    E-Print Network [OSTI]

    Hipp, Billy W.

    1969-01-01T23:59:59.000Z

    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... of the soils n-j Laredo si 1 supplied 3.29 me K/me of exchangeable K increased by the addition of K fertilizer after nme ;- Yotassium Pixation and 3upgly By Soils Witb Mixed Clay Ad111t1;: Bill] " ' " HE POTASSIUM STATUS OF SOILS of the Midwest, North...

  12. Soil Insulation For Barrier Layer Protection In Landfill Covers

    E-Print Network [OSTI]

    Gregory Smith Roy

    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 ...

  13. Calcium and sodium bentonite for hydraulic containment applications

    SciTech Connect (OSTI)

    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

    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.

  14. Geophysical investigation of a large landslide in glaciolacustrine clays in the Trives area (French Alps)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Geophysical investigation of a large landslide in glaciolacustrine clays in the Trièves area Lyon, LRPC Autun, BP 141, 71404 Autun cedex, France Abstract Slope movements in clay deposits are world differentiating the body to be mapped. For landslides affecting thick clay materials (from soft clay to shale

  15. A variational Cam-clay theory of plasticity M. Ortiz a,*, A. Pandolfi b

    E-Print Network [OSTI]

    Ortiz, Michael

    A variational Cam-clay theory of plasticity M. Ortiz a,*, A. Pandolfi b a Graduate Aeronautical of the so-called Cam-clay theories. As typical of Cam-clay models, soil is assumed to be frictional of the visco-plastic constitutive updates. Ó 2004 Elsevier B.V. All rights reserved. Keywords: Variational Cam-clay

  16. Jurassic and Cretaceous clays of the northern and central North Sea

    E-Print Network [OSTI]

    Haszeldine, Stuart

    Jurassic and Cretaceous clays of the northern and central North Sea hydrocarbon reservoirs reviewedQF, UK AB ST R ACT : The principal clays of the northern and central North Sea are illite (sometimes interpreted as both infiltrated clastic clay, and as an early diagenetic phase. Early clays may have been

  17. INTERACTION BETWEEN PRESSURE SOLUTION AND CLAYS IN STYLOLITE DEVELOPMENT: INSIGHTS FROM MODELING

    E-Print Network [OSTI]

    Einat, Aharonov

    INTERACTION BETWEEN PRESSURE SOLUTION AND CLAYS IN STYLOLITE DEVELOPMENT: INSIGHTS FROM MODELING are strongly correlated both with the surrounding stress and with the distribution of clays within the host-solution with and without the presence of clays, where clays play a role of enhancing pressure solution. We use our model

  18. The Effect of Physico-Chemical Factors on the Stability and Transport of Clay Particles 

    E-Print Network [OSTI]

    Musharova, Darya

    2012-07-16T23:59:59.000Z

    Fixation in Clays ....................................................................... 42 5.3.1 Kaolin-NH4Cl System ................................................................. 43 5.3.2 Zirconium Lactate Clay Stabilizer... ......................................................................................... 84 6.7.3.1 Core effluent analysis ...................................................... 88 6.8 Effect of Zirconium Lactate Clay Stabilizer on Clay Dispersion ........ 90 6.7.4 Summary...

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

    E-Print Network [OSTI]

    Abbott, Ute Agnes

    1973-01-01T23:59:59.000Z

    . 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...

  20. Limits of isotropic plastic deformation of Bangkok clay

    E-Print Network [OSTI]

    P. Evesque

    2005-07-08T23:59:59.000Z

    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

  1. Modeling Coupled Processes in Clay Formations for Radioactive Waste Disposal

    SciTech Connect (OSTI)

    Liu, Hui-Hai; Rutqvist, Jonny; Zheng, Liange; Sonnenthal, Eric; Houseworth, Jim; Birkholzer, Jens

    2010-08-31T23:59:59.000Z

    As a result of the termination of the Yucca Mountain Project, the United States Department of Energy (DOE) has started to explore various alternative avenues for the disposition of used nuclear fuel and nuclear waste. The overall scope of the investigation includes temporary storage, transportation issues, permanent disposal, various nuclear fuel types, processing alternatives, and resulting waste streams. Although geologic disposal is not the only alternative, it is still the leading candidate for permanent disposal. The realm of geologic disposal also offers a range of geologic environments that may be considered, among those clay shale formations. Figure 1-1 presents the distribution of clay/shale formations within the USA. Clay rock/shale has been considered as potential host rock for geological disposal of high-level nuclear waste throughout the world, because of its low permeability, low diffusion coefficient, high retention capacity for radionuclides, and capability to self-seal fractures induced by tunnel excavation. 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 Mol site, Belgium (Barnichon et al., 2005) have all been under intensive scientific investigations (at both field and laboratory scales) for understanding a variety of rock properties and their relations with flow and transport processes associated with geological disposal of nuclear waste. Clay/shale formations may be generally classified as indurated and plastic clays (Tsang et al., 2005). The latter (including Boom clay) is a softer material without high cohesion; its deformation is dominantly plastic. For both clay rocks, coupled thermal, hydrological, mechanical and chemical (THMC) processes are expected to have a significant impact on the long-term safety of a clay repository. For example, the excavation-damaged zone (EDZ) near repository tunnels can modify local permeability (resulting from induced fractures), potentially leading to less confinement capability (Tsang et al., 2005). Because of clay's swelling and shrinkage behavior (depending on whether the clay is in imbibition or drainage processes), fracture properties in the EDZ are quite dynamic and evolve over time as hydromechanical conditions change. To understand and model the coupled processes and their impact on repository performance is critical for the defensible performance assessment of a clay repository. Within the Natural Barrier System (NBS) group of the Used Fuel Disposition (UFD) Campaign at DOE's Office of Nuclear Energy, LBNL's research activities have focused on understanding and modeling such coupled processes. LBNL provided a report in this April on literature survey of studies on coupled processes in clay repositories and identification of technical issues and knowledge gaps (Tsang et al., 2010). This report will document other LBNL research activities within the natural system work package, including the development of constitutive relationships for elastic deformation of clay rock (Section 2), a THM modeling study (Section 3) and a THC modeling study (Section 4). The purpose of the THM and THC modeling studies is to demonstrate the current modeling capabilities in dealing with coupled processes in a potential clay repository. In Section 5, we discuss potential future R&D work based on the identified knowledge gaps. The linkage between these activities and related FEPs is presented in Section 6.

  2. 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...

  3. Immersion freezing of clay minerals and bacterial ice nuclei

    E-Print Network [OSTI]

    Hiranuma, Naruki

    2013-01-01T23:59:59.000Z

    The immersion mode ice nucleation efficiency of clay minerals and biological aerosols has been investigated using the AIDA (Aerosol Interaction and Dynamics in the Atmosphere) cloud chamber. Both monodisperse and polydisperse ...

  4. The mechanical behavior of heavily overconsolidated resedimented Boston Blue Clay

    E-Print Network [OSTI]

    Vargas Bustamante, Albalyra Geraldine

    2013-01-01T23:59:59.000Z

    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 ...

  5. Modeling Coupled Processes in Clay Formations for Radioactive Waste Disposal

    E-Print Network [OSTI]

    Liu, Hui-Hai

    2010-01-01T23:59:59.000Z

    2010). 4. Impact of rock-property heterogeneity as well asa variety of rock properties and their relations with flowwill use clay host rock properties derived from the Opalinus

  6. Analysis of consolidation around driven piles in overconsolidated clay

    E-Print Network [OSTI]

    Niarchos, Dimitrios G

    2012-01-01T23:59:59.000Z

    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). ...

  7. Influence of loading rate on axially loaded piles in clay

    E-Print Network [OSTI]

    Garland Ponce, Enrique Eduardo

    1984-01-01T23:59:59.000Z

    International Conference on Soil Mechanics and Founda- tion Engineerinq, London, V. l, pp. 207-210 Bjerrum, L. Simons, N. Torblaa, I. (1958) Crawford, C. B. (1959) The Effect of Time on the Shear Strength of a Soft Marine Clay The Influence of Rate... of Strain on Effective Stresses in Sensitive Clay Norweqian Geotechnical Institute, Publication No. 33, pp. 135-142. American Society of Testing Materials (Special Technical Publication No. 361), pp. 36-61. Richardson, A. M. Whitman, R. V. (1963...

  8. Synergistic effects of sulfosuccinate/polymer system for clay stabilization

    SciTech Connect (OSTI)

    Alonso-DeBolt, M.; Jarrett, M. [Baker Hughes INTEQ, Houston, TX (United States)

    1995-12-31T23:59:59.000Z

    A unique polymer system has been developed for on-land drilling applications. This system reduces clay swelling and dispersion by using water-soluble polymers in conjunction with sulfosuccinate derivative-based surfactants. Synergistic benefits with these polymers and surfactants are demonstrated. Reducing or eliminating the hydrophilic nature of clay surfaces by charge neutralization enhances borehole stability and drilling fluid performance. This polymer system is non-toxic and biodegradable.

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

    SciTech Connect (OSTI)

    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

    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.

  10. Carboxylic acid sorption on synthetic clays in marine water: in vitro experiments and implications for organo-clay behaviour under marine conditions

    E-Print Network [OSTI]

    1 Carboxylic acid sorption on synthetic clays in marine water: in vitro experiments and implications for organo-clay behaviour under marine conditions Sylvain Drouin a , Mohammed Boussafir a* , Jean to investigate the role of clay minerals in organic matter preservation, the fixation of pure organic compounds

  11. Hollow clay tile wall program summary report

    SciTech Connect (OSTI)

    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

    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?

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

    SciTech Connect (OSTI)

    Li, D.; Kaplan, D.

    2012-02-29T23:59:59.000Z

    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.

  13. Cyclic threshold strains in clays versus sands and the change of secant shear modulus and pore water pressure at small cyclic strains

    E-Print Network [OSTI]

    Mortezaie, Ahmad Reza -

    2012-01-01T23:59:59.000Z

    Tests on Drammen Clay,” Journal of the Geotechnical Eng.on Settlement of Saturated Clay Layer Induced by CyclicProperties and Response of Soft Clay Deposits," Proceedings

  14. Application of the Ta liner technique to produce Ca beams at INFN-Legnaro National Laboratories (INFN-LNL)

    SciTech Connect (OSTI)

    Galatà, A., E-mail: alessio.galata@lnl.infn.it; Sattin, M.; Manzolaro, M.; Martini, D.; Facco, A. [INFN-Legnaro National Laboratories, Legnaro (Pd) (Italy)] [INFN-Legnaro National Laboratories, Legnaro (Pd) (Italy); Tinschert, K.; Spaedtke, P.; Lang, R. [GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany)] [GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany); Kulevoy, T. [Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)] [Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)

    2014-02-15T23:59:59.000Z

    The ECR ion sources are able to produce a wide variety of highly charged metallic ion beams thanks to the development of different techniques (ovens, sputtering, direct insertion, metal ions from volatile compounds (MIVOC)). In the case of the ovens, the sticking of the hot vapors on the surface of the plasma chamber leads to high material consumption rates. For elements like Ca, a tantalum liner inserted inside the chamber can be used to limit this phenomenon. The modeling of temperature distribution inside the chamber with and without the liner was carried out with COMSOL-multiphysics code. Results of simulation and the comparison with experiments performed at INFN-Legnaro National Laboratories with Ca beams are discussed.

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

    SciTech Connect (OSTI)

    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

    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%.

  16. Normalized sensitivities and parameter identifiability of in situ diffusion experiments on Callovo-Oxfordian clay at Bure site

    E-Print Network [OSTI]

    Samper, J.

    2010-01-01T23:59:59.000Z

    and Laboratory Data. Appl. Clay Sci. 26, 123-135. Yllera,in situ diffusion experiment in the Opalinus clay formation.Appl. Clay Sci. 26, 181-196. Figure 1. Sketch of borehole

  17. Investigation of two-phase flow phenomena associated with corrosion in an SF/HLW repository in Opalinus Clay, Switzerland

    E-Print Network [OSTI]

    Senger, R.

    2010-01-01T23:59:59.000Z

    on storage barriers. Applied Clay Science 26, 511–520.properties of the Opalinus Clay, a potential host rock1.EÀ4 c Bentonite Opalinus Clay a Container represented by a

  18. Efficiency of clay-TiO2 nanocomposites on the photocatalytic elimination of a model hydrophobic air pollutant

    E-Print Network [OSTI]

    Kibanova, Daria

    2010-01-01T23:59:59.000Z

    Paris - Chemistry 2000, 3, 405-411. Clay-TiO 2 nanocompositenanocomposites Appl. Clay Sci. 2006, (28) Ooka, C. ;of TiO 2 -pillared clay on adsorption and photocatalysis of

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

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Stable isotope geochemistry of sulfur bearing minerals and clay mineralogy of some soils Keywords: Sulfur geochemistry Gypsum crystallization water Clay mineralogy Palygorskite Iranian soils Loot technique and clay mineralogy were studied in different landforms in Loot Desert, central Iran. Four

  20. Demonstration of artificial visual percepts generated through thalamic microstimulation John S. Pezaris, and R. Clay Reid

    E-Print Network [OSTI]

    Reid, R. Clay

    . Pezaris, and R. Clay Reid doi:10.1073/pnas.0608563104 published online Apr 23, 2007;PNAS This information microstimulation John S. Pezaris* and R. Clay Reid Department of Neurobiology, Harvard Medical School, 220 Longwood

  1. Evaluation of Alpha-Phased Zirconium Phosphate Nanoparticles as a Clay Stabilizer and an EOR Agent 

    E-Print Network [OSTI]

    Zhou, Yi

    2014-12-15T23:59:59.000Z

    fines migration in sandstone formations and recovery more oil in carbonate. To test the ability of ?-ZrP nanofluids as a clay stabilizer, coreflood tests were conducted using alpha phased zirconium phosphate based nanofluids as a clay stabilizer...

  2. H2O and Cation Structure and Dynamics in Expandable Clays: 2H...

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

    H2O and Cation Structure and Dynamics in Expandable Clays: 2H and 39K NMR Investigations of Hectorite. H2O and Cation Structure and Dynamics in Expandable Clays: 2H and 39K NMR...

  3. RIETVELD REFINEMENT OF REAL STRUCTURE PARAMETERS OF DISORDERED CLAY MINERALS IN

    E-Print Network [OSTI]

    Magee, Joseph W.

    -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

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

    E-Print Network [OSTI]

    Liu, H.H.

    2012-01-01T23:59:59.000Z

    illitization in burial diagenesis environments. Geochimicausually part of the diagenesis process of clay formation (is usually part of the diagenesis process of clay formation.

  5. EXPERIMENTAL ANALYSIS OF YIELDING AND STRAIN LOCALIZATION OF MODERATELY OVERCONSOLIDATED KAOLIN CLAY

    E-Print Network [OSTI]

    Prashant, Amit

    CLAY Amit Prashant1 (Member, ASCE) and Dayakar Penumadu2 (Member, ASCE) ABSTRACT Elasto-plasticity theory has been commonly used to model the mechanical behavior of clays. Yielding and normalized failure materials. For isotropically overconsolidated clays, the stress state will be inside the elastic zone

  6. Clay mineral variations in Holocene terrestrial sediments from the Indus Basin Anwar Alizai a,

    E-Print Network [OSTI]

    Clift, Peter

    Clay mineral variations in Holocene terrestrial sediments from the Indus Basin Anwar Alizai a 23 February 2012 Keywords: XRD Clay mineralogy Monsoon Himalaya Indus Delta Floodplain Fluvial processes Large rivers We employed X-ray diffraction methods to quantify clay mineral assemblages

  7. A Simple Method To Improve the Clarity and Rheological Properties of Polymer/Clay

    E-Print Network [OSTI]

    Raghavan, Srinivasa

    A Simple Method To Improve the Clarity and Rheological Properties of Polymer/Clay Nanocomposites by Using Fractionated Clay Particles Bani H. Cipriano,, Takashi Kashiwagi,§ Xin Zhang,| and Srinivasa R prepared using organophilic derivatives of commercial montmorillonite (MMT) clays that contain a wide range

  8. Distribution of Clay Minerals in Lower Cook Inlet and Kodiak Shelf Sediment, Alaska

    E-Print Network [OSTI]

    Distribution of Clay Minerals in Lower Cook Inlet and Kodiak Shelf Sediment, Alaska James R. llein-five surface samples from lower Cook Inlet and forty-three from Kodiak shelf, Alaska, were analyzed for clay percentages of clay minerals. This is because modern ocean currents vigorously rework surficial sediment

  9. Modelling the thermo-mechanical volume change behaviour of compacted expansive clays

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Modelling the thermo-mechanical volume change behaviour of compacted expansive clays Anh-Minh Tang expansive clays are often considered as a possible buffer material in high-level deep radioactive waste disposals. After the installation of waste canisters, the engineered clay barriers are subjected to thermo

  10. Application of a simple viscous model to the cyclic behavior of clays at small strains

    E-Print Network [OSTI]

    Application of a simple viscous model to the cyclic behavior of clays at small strains Gilberto F development of the cyclic behavior of clays at small strains using the model proposed by Martins (1992 tests carried out by Mortezaie (2012) in a fabricated clay. It is shown that satisfactory predictions

  11. Clay minerals and their beneficial effects upon human health. M. Isabel Carretero*

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Clay minerals and their beneficial effects upon human health. A review M. Isabel Carretero* Dpto examines the beneficial effects for human health of clay minerals, describing their use in pharmaceutical process and in its possible degradation effect. Among their uses in spas, clay minerals therapeutic

  12. Polystyrene/Clay Nanocomposites by Atom Transfer Radical Nitroxide Coupling Chemistryy

    E-Print Network [OSTI]

    Turro, Nicholas J.

    Polystyrene/Clay Nanocomposites by Atom Transfer Radical Nitroxide Coupling Chemistryy Muhammed of well- dispersed clay layers such as montmorillonite (MMT) into a polymer matrix has been proved However, the dispersion of clay as indi- vidual platelets throughout the polymer is difficult to achieve

  13. PROBLEMS IN DYNAMICAL SYSTEMS AND RELATED TOPICS RAISED IN CONNECTION WITH THE CLAY

    E-Print Network [OSTI]

    Katok, Svetlana

    PROBLEMS IN DYNAMICAL SYSTEMS AND RELATED TOPICS RAISED IN CONNECTION WITH THE CLAY MATHEMATICS References 45 1. INTRODUCTION At the Clay Mathematics Institute/Mathematical Sciences Research In- stitute these contributions. Thanks are due, therefore, to the Clay Mathematics Insti- tute and the the Mathematical Sciences

  14. Size dependence of microprobe dynamics during gelation of a discotic colloidal clay

    E-Print Network [OSTI]

    Size dependence of microprobe dynamics during gelation of a discotic colloidal clay Jason P. Rich. This phenomenon has recently been demonstrated for a gel-forming aqueous dispersion of Laponite® clay Oppong et al spherical and uncharged, anisotropic charged particles like discotic colloidal clays are common in nature

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

    E-Print Network [OSTI]

    Cotton-Clay, Andrew

    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

  16. THE LINK BETWEEN CLAY MINERAL WEATHERING AND THE FORMATION OF NI SURFACE PRECIPITATES

    E-Print Network [OSTI]

    Sparks, Donald L.

    THE LINK BETWEEN CLAY MINERAL WEATHERING AND THE FORMATION OF NI SURFACE PRECIPITATES Andreas C, Schlieren, Switzerland Spectroscopic and microscopic studies have shown that Ni and Co sorption by clay:1 or 2:1 phyllosilicates requires the release ofA1 and Si from clay minerals. Due to similar metal

  17. Compression Behaviour of Natural and Reconstituted Clays Zhen-Shun Hong1

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Compression Behaviour of Natural and Reconstituted Clays Zhen-Shun Hong1 , Ling-Ling Zeng2 , Yu the effect of the starting point on the compressibility of natural and reconstituted clays. It is found of reconstituted clays is controlled solely by the water content at the remoulded yield stress and the liquid limit

  18. Experimental Analysis of Yielding and Strain Localization of Moderately Overconsolidated Kaolin Clay

    E-Print Network [OSTI]

    Prashant, Amit

    Clay Amit Prashant and Dayakar Penumadu 17th ASCE Engineering Mechanics Conference, June 2004. Abstract Elasto-plasticity theory has been commonly used to model the mechanical behavior of clays. Yielding for frictional materials. For isotropically overconsolidated clays, the stress state will be inside the elastic

  19. Detection and cultivation of indigenous microorganisms in Mesozoic claystone core samples from the Opalinus Clay Formation

    E-Print Network [OSTI]

    Gilli, Adrian

    the Opalinus Clay Formation (Mont Terri Rock Laboratory) L. Mauclaire a,*, J.A. McKenzie a , B. Schwyn b , P various deep-subsurface environments, the persistence of microbial activity in clay- stones buried life in the Opalinus Clay Formation (Mesozoic claystone, 170 million years old) at the Mont Terri Rock

  20. Fe-CYCLE BACTERIA FROM INDUSTRIAL CLAYS MINED IN GEORGIA, USA EVGENYA S. SHELOBOLINA

    E-Print Network [OSTI]

    Lovley, Derek

    Fe-CYCLE BACTERIA FROM INDUSTRIAL CLAYS MINED IN GEORGIA, USA EVGENYA S. SHELOBOLINA 1, *,{, SAM M are major discoloring impurities in mined commercial white kaolin clay. In order to evaluate the potential influence of Fe-cycle bacteria on Fe cycling during post- depositional clay-weathering alteration, Fe

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

    E-Print Network [OSTI]

    Boyer, Edmond

    Differences in potassium forms between cutans and adjacent soil matrix in a Grey Clay Soil Fan Liu1 of cutans on potassium forms and their transformations were investigated for a Western Australian grey clay soil. Cutans and matrix soil had similar clay mineral associations with kaolinite, smectite and illite

  2. Intercalation of a Nonionic Surfactant (C10E3) bilayer into a Na-Montmorillonite Clay

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Intercalation of a Nonionic Surfactant (C10E3) bilayer into a Na-Montmorillonite Clay Régis of a Na-montmorillonite clay at several concentrations. The synthesized organoclays were characterized surfactants in clays where the expansion of the interlayer space was limited to two monolayers parallel

  3. Clay: A Type-Safe Systems Programming Language Bucknell Computer Science Technical Report #08-1

    E-Print Network [OSTI]

    Wittie, Lea

    Clay: A Type-Safe Systems Programming Language Bucknell Computer Science Technical Report #08-1 Lea Wittie March 12, 2008 1 Introduction The Clay programming language is a type-safe variant of C, arithmetic constraints in function pre and post conditions, polymorphism, and type inference. Clay is able

  4. Metal-Exchanged Clay and Zeolite Additives as Smoke Suppressants and Fire Retardants for

    E-Print Network [OSTI]

    Pike, Robert D.

    Metal-Exchanged Clay and Zeolite Additives as Smoke Suppressants and Fire Retardants for Poly studies showed that various metal- exchanged clays and zeolites containing only 3­4% of Cu(II), Cu(I), Zn blends of the clays, and the effectiveness of the additives was usually improved considerably by heat

  5. 182 28th ANNUAL eMS Sorption and Desorption of Quaternary Amine Cations on Clays

    E-Print Network [OSTI]

    Sparks, Donald L.

    182 28th ANNUAL eMS Sorption and Desorption of Quaternary Amine Cations on Clays Z. Z. Zhang and D of organic cations on clays was first studied by Hendricks1. It has been shown that organic cations to measure the cation exchange capacity of the clay2 as well as to determine the specific surface area3

  6. Putty und clay Funktionen in Produktion und Finanzen Eine Einfhrung in die Makro-konophysik

    E-Print Network [OSTI]

    Mimkes, Jürgen

    Putty und clay Funktionen in Produktion und Finanzen Eine Einführung in die Makro Funktionen als putty oder clay. Putty bedeutet Kitt, der erst weich ist und dann fest wird. Eine putty Jahresende (ex post) ist es fixiert. Clay bedeutet Ton. Eine (gebrannte) Tonschale ist anfangs fest und auch

  7. Clay minerals in late glacial and Holocene sediments of the northern and southern Aegean Sea

    E-Print Network [OSTI]

    Siebel, Wolfgang

    Clay minerals in late glacial and Holocene sediments of the northern and southern Aegean Sea Werner Different source areas, oceanography and climate regimes influenced the clay mineral assemblages and grain and the Holocene. In the North Aegean Sea, clay mineral composition is mainly controlled by sea level evolution

  8. Hyperspectral laboratory and remote sensing applied to clay minerals identification and mapping

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Hyperspectral laboratory and remote sensing applied to clay minerals identification and mapping contain clay minerals that change volume with water content and cause extensive and expensive damage susceptibility. At local scale, characterization of soil properties and identification of clay minerals using

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

    E-Print Network [OSTI]

    George, Steven C.

    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

  10. Occurrence and alteration of clay minerals in the Caribbean Sea

    E-Print Network [OSTI]

    Johnson, Charles Michael

    1973-01-01T23:59:59.000Z

    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...

  11. Fine particle clay catalysts for coal liquefaction. Final technical report

    SciTech Connect (OSTI)

    Olson, E.S.

    1995-08-01T23:59:59.000Z

    In an effort to develop new disposable catalysts for direct coal liquefaction, several types of clay-supported pyrrhotite catalysts were prepared and tested. These included iron-pillared montmorillonite, mixed iron/alumina-pillared montmorillonite, iron-impregnated montmorillonite, and iron oxometallate-impregnated montmorillonite.

  12. Kinetics of Swelling in Clay-Bearing Stones

    E-Print Network [OSTI]

    Petta, Jason

    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

  13. Reinforcement and environmental degradation of nylon-6/clay nanocomposites

    E-Print Network [OSTI]

    Mather, Patrick T.

    2000; accepted 6 December 2000 Abstract Hybrid organic/inorganic nanocomposites are being developedReinforcement and environmental degradation of nylon-6/clay nanocomposites J.S. Shelleya , P their processing characteristics. One such nanocomposite developed by Toyota and commercialized by Ube Industries

  14. Surface barriers: Problems, solutions, and future needs

    SciTech Connect (OSTI)

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

    1994-12-31T23:59:59.000Z

    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.

  15. A review of WIPP (Waste Isolation Pilot Plant) repository clays and their relationship to clays of adjacent strata

    SciTech Connect (OSTI)

    Krumhansl, J.L.; Kimball, K.M.; Stein, C.L.

    1990-12-01T23:59:59.000Z

    The Salado Formation is a thick evaporite sequence located in the Permian Delaware Basin of southeastern New Mexico. This study focuses on the intense diagenetic alteration that has affected the small amounts of clay, feldspar, and quartz washed into the basin during salt deposition. These changes are of more than academic interest since this formation also houses the WIPP (Waste Isolation Pilot Plant). Site characterization concerns warrant compiling a detailed data base describing the clays in and around the facility horizon. An extensive sampling effort was undertaken to address these programmatic issues as well as to provide additional insight regarding diagenetic mechanisms in the Salado. Seventy-five samples were collected from argillaceous partings in halite at the stratigraphic level of the Waste Isolation Pilot Plant (WIPP). These were compared with twenty-eight samples from cores of the Vaca Triste member of the Salado, a thin clastic unit at the top of the McNutt potash zone, and with a clay-rich sample from the lower contact of the Culebra Dolomite (in the overlying Rustler Formation). These settings were compared to assess the influence of differences in brine chemistry (i.e., halite and potash facies, normal to hypersaline marine conditions) and sediment composition (clays, sandy silt, dolomitized limestone) on diagenetic processes. 44 refs., 11 figs., 5 tabs.

  16. HST Observations and Photoionization Modeling of the LINER Galaxy NGC 1052

    E-Print Network [OSTI]

    J. R. Gabel; F. C. Bruhweiler; D. M. Crenshaw; S. B. Kraemer; C. L. Miskey

    2000-01-19T23:59:59.000Z

    We present a study of available Hubble Space Telescope (HST) spectroscopic and imaging observations of the low ionization nuclear emission line region (LINER) galaxy NGC 1052. The WFPC2 imagery clearly differentiates extended nebular Halpha emission from that of the compact core. Faint Object Spectrograph (FOS) observations provide a full set of optical and UV data (1200-6800 Angstroms). These spectral data sample the innermost region (0."86 x 0."86 ~ 82pc x 82pc) and exclude the extended Halpha emission seen in the WFPC2 image. The derived emission line fluxes allow a detailed analysis of the physical conditions within the nucleus. The measured flux ratio for Halpha/Hbeta, F{Halpha}/F{Hbeta}=4.53, indicates substantial intrinsic reddening, E(B-V)=0.42, for the nuclear nebular emission. This is the first finding of a large extinction of the nuclear emission line fluxes in NGC 1052. If the central ionizing continuum is assumed to be attenuated by a comparable amount, then the emission line fluxes can be reproduced well by a simple photoionization model using a central power law continuum source with a spectral index of alpha = -1.2 as deduced from the observed flux distribution. A multi-density, dusty gas gives the best fit to the observed emission line spectrum. Our calculations show that the small contribution from a highly ionized gas observed in NGC 1052 can also be reproduced solely by photoionization modeling. The high gas covering factor determined from our model is consistent with the assumption that our line of sight to the central engine is obscured.

  17. Molecular Gas in NUclei of GAlaxies (NUGA) I.The counter-rotating LINER NGC4826

    E-Print Network [OSTI]

    S. Garcia-Burillo; F. Combes; L. K. Hunt; F. Boone; A. J. Baker; L. J. Tacconi; A. Eckart; R. Neri; S. Leon; E. Schinnerer; P. Englmaier

    2003-06-06T23:59:59.000Z

    We present new high-resolution observations of the nucleus of the counter-rotating LINER NGC4826, made in the J=1-0 and J=2-1 lines of 12CO with the IRAM Plateau de Bure mm-interferometer(PdBI).The CO maps, which achieve 0.8''(16pc) resolution in the 2-1 line, fully resolve an inner molecular gas disk which is truncated at an outer radius of 700pc. The total molecular gas mass is distributed in a lopsided nuclear disk of 40pc radius and two one-arm spirals, which develop at different radii in the disk. The distribution and kinematics of molecular gas in the inner 1kpc of NGC4826 show the prevalence of different types of m=1 perturbations in the gas. Although dominated by rotation, the gas kinematics are perturbed by streaming motions related to the m=1 instabilities. The non-circular motions associated with the inner m=1 perturbations agree qualitatively with the pattern expected for a trailing wave developed outside corotation ('fast' wave). In contrast, the streaming motions in the outer m=1 spiral are better explained by a 'slow' wave. A paradoxical consequence is that the inner m=1 perturbations would not favour AGN feeding. An independent confirmation that the AGN is not being generously fueled at present is found in the low values of the gravitational torques exerted by the stellar potential for R<530pc. The distribution of star formation in the disk of NGC4826 is also strongly asymmetrical. Massive star formation is still vigorous, fed by the significant molecular gas reservoir at R<700pc. There is supporting evidence for a recent large mass inflow episode in NGC4826. These observations have been made in the context of the NUclei of GAlaxies (NUGA) project, aimed at the study of the different mechanisms for gas fueling of AGN.

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

    DOE Patents [OSTI]

    Thode, Lester E. (Los Alamos, NM)

    1981-01-01T23:59:59.000Z

    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.

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

    DOE Patents [OSTI]

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

    1980-01-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Kaber, David B.

    ABSTRACT WRIGHT, MELANIE CLAY. The Effects of Automation on Team Performance and Team Coordination OF AUTOMATION ON TEAM PERFORMANCE AND TEAM COORDINATION By MELANIE CLAY WRIGHT A dissertation submitted #12;BIOGRAPHY Melanie Clay Wright was born Melanie Carol Clay in Bethesda, Maryland in April, 1966

  1. Effect of swell pressure on GCL cover stability

    SciTech Connect (OSTI)

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

    1997-11-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

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

    E-Print Network [OSTI]

    Harville, Donald Gene

    1985-01-01T23:59:59.000Z

    , 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...

  4. Study of instability formation and EUV emission in thin liners driven with a compact 250?kA, 150?ns linear transformer driver

    SciTech Connect (OSTI)

    Valenzuela, J. C., E-mail: jcval@ucsd.edu; Collins, G. W.; Mariscal, D.; Beg, F. N. [Center for Energy Research, University of California San Diego, La Jolla, California 92093 (United States)] [Center for Energy Research, University of California San Diego, La Jolla, California 92093 (United States); Wyndham, E. S. [Facultad de Física, Pontificia Universidad Católica de Chile, Ave. Vicuña Mackena 4860, Macul, Santiago (Chile)] [Facultad de Física, Pontificia Universidad Católica de Chile, Ave. Vicuña Mackena 4860, Macul, Santiago (Chile)

    2014-03-15T23:59:59.000Z

    A compact linear transformer driver, capable of producing 250?kA in 150?ns, was used to study instability formation on the surface of thin liners. In the experiments, two different materials, Cu and Ni, were used to study the effect of the liner's resistivity on formation and evolution of the instabilities. The dimensions of the liners used were 7?mm height, 1?mm radius, and 3??m thickness. Laser probing and time resolved extreme ultraviolet (EUV) imaging were implemented to diagnose instability formation and growth. Time-integrated EUV spectroscopy was used to study plasma temperature and density. A constant expansion rate for the liners was observed, with similar values for both materials. Noticeable differences were found between the Cu and Ni instability growth rates. The most significant perturbation in Cu rapidly grows and saturates reaching a limiting wavelength of the order of the liner radius, while the most significant wavelength in Ni increases slowly before saturating, also at a wavelength close to the liner radius. Evidence suggests that the instability observed is the well-known m?=?0 MHD instability. However, upon comparing the instability evolution of Cu and Ni, the importance of the resistivity on the seeding mechanism becomes evident. A comparison of end-on and side-on EUV emission possible indicates the formation of precursor plasma, where it has been estimated using EUV spectroscopy that the precursor plasma temperature is approximately 40?eV with ion density of order 10{sup 19}?cm{sup ?3}, for both materials.

  5. Deep ocean clay crusts: behaviour and biological origin

    E-Print Network [OSTI]

    Kuo, Matthew Yih-Han

    2011-03-15T23:59:59.000Z

    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...

  6. Diagenesis of clay minerals from early Eocene shales of Texas

    E-Print Network [OSTI]

    Whynot, John David

    1983-01-01T23:59:59.000Z

    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...

  7. Laboratory testing of closure cap repair techniques

    SciTech Connect (OSTI)

    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

    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.

  8. Photocatalytic properties of titania pillared clays by different drying methods

    SciTech Connect (OSTI)

    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

    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.

  9. Gas Dynamics in the LINER Galaxy NGC 5005: Episodic Fueling of a Nuclear Disk

    E-Print Network [OSTI]

    Kazushi Sakamoto; Andrew J. Baker; Nick Z. Scoville

    1999-10-01T23:59:59.000Z

    We report high-resolution CO(1-0) observations in the central 6 kpc of the LINER galaxy NGC 5005 with the Owens Valley Radio Observatory millimeter array. Molecular gas is distributed in three components - a ring at a radius of about 3 kpc, a strong central condensation, and a stream to the northwest of the nucleus but inside the 3 kpc ring. The central condensation is a disk of about 1 kpc radius with a molecular gas mass of 2 x 10^9 M_sun. The stream between the 3 kpc ring and the nuclear disk lies on a straight dust lane seen in the optical. If this material moves in the plane of the galaxy, it has a velocity offset by up to ~ 150 km/s from galactic rotation. We suggest that an optically inconspicuous stellar bar lying within the 3 kpc ring can explain the observed gas dynamics. This bar is expected to connect the nuclear disk and the ring along the position angle of the northwest stream. A position-velocity cut in this direction reveals features which match the characteristic motions of gas in a barred potential. Our model indicates that gas in the northwest stream is on an x_1 orbit at the bar's leading edge; it is falling into the nucleus with a large noncircular velocity, and will eventually contribute about 2 x 10^8 M_sun to the nuclear disk. If most of this material merges with the disk on its first passage of pericenter, the gas accretion rate during the collision will be 50 M_sun/yr. We associate the nuclear disk with an inner 2:1 Lindblad resonance, and the 3 kpc ring with an inner 4:1 Lindblad resonance. The high rate of bar-driven inflow and the irregular appearance of the northwest stream suggest that a major fueling event is in progress in NGC 5005. Such episodic (rather than continuous) gas supply can regulate the triggering of starburst and accretion activity in galactic nuclei. (abridged)

  10. DE-FG02-06ER15364: Final Technical Report Nanoscale Reactivity of Clays, Clay Analogues (Micas), and Clay Minerals

    SciTech Connect (OSTI)

    Nagy, Kathryn L.

    2008-07-03T23:59:59.000Z

    The project objectives were to determine the nanoscale to molecular scale structure of the interface between muscovite mica and aqueous solutions containing various sorbates and to explore systematics that control the incorporation of inorganic and organic chemical components during aging of nanoparticles of iron-oxides and aluminosilicate clays. The basal surface of phyllosilicates is a primary sorbent of environmental contaminants, natural organic matter, and nutrients. Micas are also superb atomically-flat substrates used in materials science and surface physics applications. We applied X-ray scattering techniques using high brilliance synchrotron radiation to investigate molecular-scale details of mica’s interface structure in solutions containing common and toxic cations, anions, and natural organic molecules. Nanoparticles are ubiquitous in the environment and have a high capacity for sorbing contaminants through the combined effects of their high surface areas and pH-dependent surface charge. Aging of nanoparticles from metastable to stable phases can be inhibited by sorption of nonstructural components, but exact mechanisms are unknown. We synthesized Fe-oxides and aluminosilicate clay minerals from aqueous solutions in the presence of selected anions, and organic molecules, and quantified the uptake of these additives during aging and some implications for nanoparticle formation.

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

    SciTech Connect (OSTI)

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

    2010-04-13T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Sparks, Donald L.

    Kinetics of Mixed Ni-Al Precipitate Formation on a Soil Clay Fraction D A R R Y L R . R O B E R-Al layered double hydroxide (LDH) precipitate formation on a soil clay fraction was monitored using X in 0.1 M NaNO3. Initial Ni sorption kinetics on the soil clay were rapid at all pH values but differed

  13. An analytical and numerical model to determine stresses in a Rock Melt Drill produced glass liner for potential use on Mars

    E-Print Network [OSTI]

    McConnell, Joshua B

    2000-01-01T23:59:59.000Z

    with investigating the properties of the created liner. Research Goal The Rock Melt Drill is one of several drilling technologies that may possess the potential for being an optimum choice for drilling on Mars, as will be discussed in greater depth in Chapter...

  14. An Ion Diffusion Model in Semi-Permeable Clay Materials. | EMSL

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

    Here we proposed a model by coupling electrodynamics and nonequilibrium thermodynamics to describe ion diffusion in the clay materials. The developed model was validated...

  15. Evaluation of Used Fuel Disposition in Clay-Bearing Rock

    SciTech Connect (OSTI)

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

    2014-08-29T23:59:59.000Z

    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.

  16. Competing interactions in arrested states of colloidal clays

    E-Print Network [OSTI]

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

    2010-01-22T23:59:59.000Z

    Using experiments, theory and simulations, we show that the arrested state observed in a colloidal clay at intermediate concentrations is stabilized by the screened Coulomb repulsion (Wigner glass). Dilution experiments allow us to distinguish this high-concentration disconnected state, which melts upon addition of water, from a low-concentration gel state, which does not melt. Theoretical modelling and simulations reproduce the measured Small Angle X-Ray Scattering static structure factors and confirm the long-range electrostatic nature of the arrested structure. These findings are attributed to the different timescales controlling the competing attractive and repulsive interactions.

  17. Non-linear Poisson-Boltzmann Theory for Swollen Clays

    E-Print Network [OSTI]

    R. J. F. Leote de Carvalho; E. Trizac; J. P Hansen

    1998-04-20T23:59:59.000Z

    The non-linear Poisson-Boltzmann equation for a circular, uniformly charged platelet, confined together with co- and counter-ions to a cylindrical cell, is solved semi-analytically by transforming it into an integral equation and solving the latter iteratively. This method proves efficient, robust, and can be readily generalized to other problems based on cell models, treated within non-linear Poisson-like theory. The solution to the PB equation is computed over a wide range of physical conditions, and the resulting osmotic equation of state is shown to be in fair agreement with recent experimental data for Laponite clay suspensions, in the concentrated gel phase.

  18. Chemical, mineralogical and physical properties of the San Saba Clay

    E-Print Network [OSTI]

    Nelson, Larry Alan

    1958-01-01T23:59:59.000Z

    ? 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...

  19. The adsorption of selected chemical compounds on soil clays

    E-Print Network [OSTI]

    Hoover, William Leroy

    1964-01-01T23:59:59.000Z

    by such chemical compounds and atomic wastes might be a potent weapon in time of war. Also, such contaminants are adding to the numerous local problems in this country during time of peace, and there is every indication that the problems will increase in magni...- tude in the future, Analogous problems exist with detergent wastes, atomic wastes, factory and industrial wastes, and the widespread uses of insecticides and fungicides. The various high adsorbing soil-clays may provide an answer, or at least a...

  20. Clay County Electric Coop Corp | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationin UrbanCity ofCity ofInformationClaridgeClassicClay County

  1. 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.png El CER esDatasetCity ofClark Energy Coop IncClay-Union

  2. Clay County, Florida: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformation SmyrnaNew York:Information Systems: AAlabama:Clay

  3. Clay County, Indiana: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformation SmyrnaNew York:Information Systems:Illinois: EnergyClay

  4. Clay Minerals Related To The Hydrothermal Activity Of The Bouillante

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformation SmyrnaNewClay Electric Cooperative, Inc Jump to:Geothermal

  5. Numerical methods for analysis of clay tile infills

    SciTech Connect (OSTI)

    Flanagan, R.D.; Tenbus, M.A. [Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States); Bennett, R.M. [Univ. of Tennessee, Knoxville, TN (United States). Dept. of Civil Engineering

    1993-10-20T23:59:59.000Z

    Recent Department of Energy requirements have led to a comprehensive evaluation of the industrial facilities at the Oak Ridge Y-12 Plant. The structures consist of simply connected steel frames infilled with structural clay tile walls. The objective of the evaluation was to determine the stability of the unreinforced infills, and whether they provide the lateral capacity necessary to resist the moderate seismic hazard at the site. Due to lack of information on the behavior of structural clay tile infills, various large-scale tests were performed to investigate the in-plane, out-of-plane and combined in-plane and out-of-plane behavior. The results of these tests are briefly summarized, and the development of analytical guidelines based on these tests is given. Little interaction between in-plane and out-of-plane loads was observed, both in terms of stiffness and strength. Out-of-plane stability can be examined panel by panel based on arching action. Inter-story drift does not appear to present a stability problem for the type of infill construction investigated. In-plane behavior may be adequately modeled with a nonlinear compression strut. A typical building is chosen for an illustrative application. The methodology and results of the seismic analysis are presented for this structure.

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

    E-Print Network [OSTI]

    Jang, Woo-Sik

    2010-01-14T23:59:59.000Z

    -filled polymer composite, is believed to be due to a ?brick wall? nanostructure comprised of completely exfoliated clay bricks in polymeric ?mortar?. The growth of polymer and clay assemblies is then shown to be controlled by altering the pH of polyethylenimine...

  7. Reduced adsorption of caesium on clay minerals caused by various humic substances

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Reduced adsorption of caesium on clay minerals caused by various humic substances C. Dumat, S!ect of the addition of various humic substances on the adsorption of caesium on two mineral clays has been studied the amount of humic substance adsorbed and the decrease in Cs adsorption when all complexes were considered

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

    E-Print Network [OSTI]

    Ahmad, Sajjad

    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

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

    E-Print Network [OSTI]

    Boyer, Edmond

    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

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

    E-Print Network [OSTI]

    Rollins, Andrew M.

    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

  11. Solid-State NMR Study of Intercalated Species in Poly( -caprolactone)/Clay Nanocomposites

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Solid-State NMR Study of Intercalated Species in Poly( - caprolactone)/Clay Nanocomposites J of surfactant and polymer chains in intercalated poly( - caprolactone)/clay nanocomposites are characterized by 31 P magic-angle spinning (MAS) and 13 C cross-polarization MAS NMR techniques. To obtain hybrid

  12. Simulation of the degradation of a concrete/clay interface: influence of temperature, unsaturated conditions and porosity variations

    E-Print Network [OSTI]

    Burnol, A.; Dupros, F.; Spycher, N.; Xu, T.; Gaucher, E.C.

    2008-01-01T23:59:59.000Z

    SIMULATION OF THE DEGRADATION OF A CONCRETE/CLAY INTERFACE:transport models applied to degradation of a concrete/clayused by the simulation of degradation of the concrete/clay

  13. Continuous Hyperplastic Models for Overconsolidated ClaysContinuous Hyperplastic Models for Overconsolidated Clays Visit us at: "www.technion.ac.il" and "www-civil.eng.ox.ac.uk"

    E-Print Network [OSTI]

    Houlsby, Guy T.

    Continuous Hyperplastic Models for Overconsolidated ClaysContinuous Hyperplastic Models for Overconsolidated Clays Visit us at: "www.technion.ac.il" and "www-civil.eng.ox.ac.uk" I. Einav and A.M. Puzrin for the formulation of realistic models for the triaxial behaviour of overconsolidated clays at both small and large

  14. J. CHEM. SOC. FARADAY TRANS., 1991, 87(15), 2501-2506 2501 Ca-K-H Exchange on Silt-, Clay-and Silt +Clay-size Soil Separates

    E-Print Network [OSTI]

    Sparks, Donald L.

    J. CHEM. SOC. FARADAY TRANS., 1991, 87(15), 2501-2506 2501 Ca-K-H Exchange on Silt-, Clay- and Silt +Clay-size Soil Separates Steven A. Grant*t and Donald L. Sparks Department of Plant and Soil Sciences and kaolinite clays. To predict accurately chemical equilibria of a natural ion- exchanger, one is forced

  15. 8/24/2005 Prashant and Penumadu. IACMAG-2005 1 On Shear Strength Behavior of Clay with Sudden FailureOn Shear Strength Behavior of Clay with Sudden Failure

    E-Print Network [OSTI]

    Prashant, Amit

    8/24/2005 Prashant and Penumadu. IACMAG-2005 1 On Shear Strength Behavior of Clay with Sudden FailureOn Shear Strength Behavior of Clay with Sudden Failure ResponseResponse Amit Prashant and Dayakar on the cubical specimens of normally to heavily over- consolidated Kaolin clay. The pre-failure elasto

  16. 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]

    Di Bucchianico, Alessandro

    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

  17. Laboratory Hydro-mechanical Characterisation of Boom Clay at Essen and Mol Y. F. Deng1, 2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Laboratory Hydro-mechanical Characterisation of Boom Clay at Essen and Mol Y. F. Deng1, 2 , A. M. In the present work, the hydro-mechanical behaviour of Boom clay samples from the borehole Essen-1 at a depth and hydro-mechanical behaviour of Boom clay from Essen at 227-m, 240-m and 248-m depths are similar

  18. Thermodynamic assessment of the variation of the surface areas of two synthetic swelling clays during adsorption of water

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Thermodynamic assessment of the variation of the surface areas of two synthetic swelling clays; Synthetic smectite; Water; Adsorption; Surface area; Swelling clay; Interlayer space #12;1. Introduction Synthetic clays are very interesting materials, both for scientific research and for industrial applications

  19. CLAY MINERALOGY ALONG THE LATERITE PROFILE IN HUBEI, SOUTH CHINA: MINERAL EVOLUTION AND EVIDENCE FOR EOLIAN ORIGIN

    E-Print Network [OSTI]

    Li, Zhaohui

    CLAY MINERALOGY ALONG THE LATERITE PROFILE IN HUBEI, SOUTH CHINA: MINERAL EVOLUTION AND EVIDENCE in more detail the associated mineralogical evolution, i.e. clay mineral composition, structural characteristics of clays in various beds with different degrees of weathering along the laterite profile

  20. Origin and significance of clay-coated fractures in mudrock fragments of the SAFOD borehole (Parkfield, California)

    E-Print Network [OSTI]

    Origin and significance of clay-coated fractures in mudrock fragments of the SAFOD borehole Received 4 April 2006; revised 26 June 2006; accepted 12 July 2006; published 24 August 2006. [1] The clay. Warr (2006), Origin and significance of clay-coated fractures in mudrock fragments of the SAFOD

  1. Clay mineralogy of surface sediments as a tool for deciphering river contributions to the Cariaco Basin (Venezuela)

    E-Print Network [OSTI]

    Meyers, Steven D.

    Clay mineralogy of surface sediments as a tool for deciphering river contributions to the Cariaco the Cariaco Basin continental shelf and Orinoco delta was investigated in order to constrain the clay was studied using a geo-statistical approach that allows drawing representative clay-mineral distribution maps

  2. Effective Shear Strength of Fiber-Reinforced Clays Freilich, B. J., Li, C., and Zornberg, J. G.

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    Effective Shear Strength of Fiber-Reinforced Clays Freilich, B. J., Li, C., and Zornberg, J. G unconfined compression testing of clay soils have provided evidence that the short term total shearing-reinforced clay soils is determined utilizing both isotropic consolidated-undrained (ICU) triaxial testing

  3. Oxygen isotope fractionation effects in soil water via interaction with cations (Mg, Ca, K, Na) adsorbed to phyllosilicate clay minerals

    E-Print Network [OSTI]

    Goldsmith, Greg

    ) adsorbed to phyllosilicate clay minerals Erik Oerter a, , Kari Finstad a , Justin Schaefer b , Gregory R with knowledge that clay particles possessing an electronegative surface charge and resulting cation exchange capacity (CEC) interact with a wide range of solutes which, in the absence of clays, have been shown

  4. Clay quantification and AreAr dating of synthetic and natural gouge: Application to the Miocene Sierra Mazatan

    E-Print Network [OSTI]

    Clay quantification and AreAr dating of synthetic and natural gouge: Application to the Miocene on the assumption that illite in fault gouge is a mixture of two populations of clays: one detrital, derived from remained largely untested. We demonstrate the validity of our clay quantification technique using

  5. Environ. Sci. Technol. 1993, 27, 1625-1631 Sorptlon and Desorption of Quaternary Amine Cations on Clays

    E-Print Network [OSTI]

    Sparks, Donald L.

    on Clays 2. Zhong Zhang,'it Donald L. Sparks,? and Noel C. Scrivner* Department of Plant and Soil Sciences. Therefore, it appears that there is good promise in using quaternary amine-modified clays as effective The sorption of organic cations on soils and clays was perhaps first observed by Lloyd in 1916 when he found

  6. EUROPIUM RETENTION ONTO CLAY MINERALS FROM 25 TO 150C: EXPERIMENTAL MEASUREMENTS, SPECTROSCOPIC FEATURES AND SORPTION MODELLING.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 EUROPIUM RETENTION ONTO CLAY MINERALS FROM 25 TO 150°C: EXPERIMENTAL MEASUREMENTS, SPECTROSCOPIC.Tertre@univ-lille1.fr Keywords: europium, sorption, clays, experimental, temperature, Time-Resolved Laser was investigated up to 150°C. The clays were purified samples, saturated with Na in the case of montmorillonite

  7. Clay fabric intensity in natural and artificial fault gouges: Implications for brittle fault zone processes and sedimentary

    E-Print Network [OSTI]

    Clay fabric intensity in natural and artificial fault gouges: Implications for brittle fault zone processes and sedimentary basin clay fabric evolution Samuel H. Haines,1 Ben A. van der Pluijm,1 Matt J intensity measurements using X-ray texture goniometry on 22 natural clay-rich fault gouges from low

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

    SciTech Connect (OSTI)

    Dardalis, Dimitrios

    2013-12-31T23:59:59.000Z

    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,

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

    SciTech Connect (OSTI)

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

    1987-08-01T23:59:59.000Z

    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.

  10. (Data in thousand metric tons, unless noted) Domestic Production and Use: In 1995, clays were produced in most States except Alaska, Delaware, Hawaii,

    E-Print Network [OSTI]

    44 CLAYS (Data in thousand metric tons, unless noted) Domestic Production and Use: In 1995, clays, these firms operated about 983 mines. Estimated value of all marketable clay produced was about $1.8 billion. Major domestic uses for specific clays were estimated as follows: kaolin--55% paper, 8% kiln furniture

  11. (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]

    50 CLAYS (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, New Hampshire, Rhode clay produced was about $2.14 billion. Major domestic uses for specific clays were estimated as follows

  12. 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]

    Values of Mineral Modulus of Clay Manika Prasad, Ronny Hofmann, Mike Batzle, Colorado School formations is altered by the presence of clay minerals. Knowledge about the elastic properties of clay is therefore essential for the interpretation and modeling of the seismic response of clay- bearing formations

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

    Open Energy Info (EERE)

    Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles Caldera, New Mexico And Their Relation To Alteration In A Large Hydrothermal System Jump to: navigation, search OpenEI...

  14. Use of ultrasound attenuation spectroscopy to determine the size distribution of clay tactoids in aqueous suspensions

    E-Print Network [OSTI]

    Samim Ali; Ranjini Bandyopadhyay

    2014-06-27T23:59:59.000Z

    The dispersion processes of aqueous samples of clay are studied using ultrasound attenuation spectroscopy. The attenuation spectra that are acquired in the frequency range $10-100$ MHz are used to determine the particle size distributions (PSDs) for different concentrations and ages of the clay suspensions. Our analysis, using equivalent spherical diameter (ESD) for circular discs under Stokes drag in samples of concentrations greater than 1.5\\% w/v, shows that a substantial fraction of the aggregates in suspension are actually tactoids that are composed of more than one platelet. This is in contrast to the general belief that clay disperses into individual platelets in the concentration range where their suspensions exhibit glassy behavior. We conclude that the incomplete fragmentation of the clay tactoids arises from the rapid enhancement of the inter-tactoid Coulombic repulsion.

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

    E-Print Network [OSTI]

    House, Robert Donald

    2012-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Russell, George 1983-

    2012-11-28T23:59:59.000Z

    Expansive clay mineral contamination of road aggregate materials in Texas is a persistent problem. Hydrous layer silicate minerals - particularly smectites - in concretes are associated with decreased strength and durability in Portland cement...

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

    E-Print Network [OSTI]

    Lu, Junying

    1997-01-01T23:59:59.000Z

    superfund sites in both soil and groundwater. The objective of this thesis is to study mechanisms to dechlorinate PCP into less harmful derivatives. The method that we are interested in utilizes ammonium-amended clays to dechlorinate PCP. Based...

  18. Natural rubber-clay nanocomposites: mechanical and structural properties Camila A. Rezende1,2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , University of Campinas, P.O. Box 6154, CEP 13083-970, Campinas- SP, Brazil *Corresponding Author E-mail: Lay in the number of papers and patents on polymer-clay nanocomposites that report outstanding mechanical

  19. Engineering properties of Resedimented Ugnu Clay from the Alaskan North Slope

    E-Print Network [OSTI]

    Jones, Cullen A. (Cullen Albert)

    2010-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Jang, Woo-Sik

    2010-01-14T23:59:59.000Z

    robotic dipping system, for the preparation of these thin films, was built. The robot alternately dips a substrate into aqueous mixtures with rinsing and drying in between. Thin films of sodium montmorillonite clay and cationic polymer were grown...

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

    E-Print Network [OSTI]

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

    2008-01-01T23:59:59.000Z

    of heterogeneity in rock property (clay content and henceNon-linear) elastic properties of the rock. Biot coefficientNon-linear) elastic properties of the rock including their

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

    E-Print Network [OSTI]

    Pitre, Brandon

    2012-12-04T23:59:59.000Z

    mix asphalt (HMA) and Portland cement concrete (PCC) mixes was also conducted. In one phase of the study, known amounts of standard clay minerals were introduced to the mixes, and performance testing was carried out. This was done in hopes...

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

    E-Print Network [OSTI]

    Andotra, Gautam

    2014-08-06T23:59:59.000Z

    -Glutamic acid N,N-Di Acetic Acid (Na-GLDA). Experiments were conducted to find out the aluminosilicates dissolution and chelation capabilities of these chelating agents. The first set of experiments were clay dissolution experiments, conducted using different...

  4. 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...

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

    E-Print Network [OSTI]

    McAllister, Raymond Francis

    1958-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Acevedo, Gilberto

    1958-01-01T23:59:59.000Z

    . '. 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...

  7. Smectite clay adsorbents of aflatoxin B1 to amend animal feed

    E-Print Network [OSTI]

    Kannewischer, Ines

    2009-05-15T23:59:59.000Z

    SMECTITE CLAY ADSORBENTS OF AFLATOXIN B 1 TO AMEND ANIMAL FEED A Thesis by INES KANNEWISCHER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... Science SMECTITE CLAY ADSORBENTS OF AFLATOXIN B 1 TO AMEND ANIMAL FEED A Thesis by INES KANNEWISCHER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree...

  8. High gradient magnetic separation of iron oxide minerals from soil clays

    E-Print Network [OSTI]

    Schulze, Darrell Gene

    1977-01-01T23:59:59.000Z

    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...

  9. Hydroconversion reactions catalyzed by highly stable pillared clays

    SciTech Connect (OSTI)

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

    1993-12-31T23:59:59.000Z

    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.

  10. Hygrothermal performance of an engineered clay barrier during sustained heating

    SciTech Connect (OSTI)

    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

    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.

  11. Intercalation of a Nonionic Surfactant (C10E3) bilayer into a Na-Montmorillonite Clay

    E-Print Network [OSTI]

    Regis Guegan

    2010-11-27T23:59:59.000Z

    A nonionic surfactant, the tri-ethylene glycol mono n-decyl ether (C10E3), characterized by its lamellar phase state, was introduced in the interlayer of a Na-montmorillonite clay at several concentrations. The synthesized organoclays were characterized by Small Angle X-Ray Scattering in conjunction with Fourier Transform Infrared spectroscopy, and adsorption isotherms. Experiments showed that a bilayer of C10E3 was intercalated into the interlayer space of the naturally exchanged Na-montmorillonite, resulting in the aggregation of the lyotropic liquid crystal state in the lamellar phase. This behavior strongly differs from previous observations of confinement of nonionic surfactants in clays where the expansion of the interlayer space was limited to two monolayers parallel to the silicate surface and cationic surfactants in clays where the intercalation of organic compounds is introduced into the clay galleries through ion exchange. The confinement of a bilayer of C10E3 nonionic surfactant in clays offers new perspectives for the realization of hybrid nanomaterials since the synthesized organoclays preserve the electrostatic characteristics of the clays, thus allowing further ion exchange, while presenting at the same time a hydrophobic surface and a maximum opening of the interlayer space for the adsorption of neutral organic molecules of important size with functional properties.

  12. Dissolution Behaviour of UO{sub 2} in Anoxic Conditions: Comparison of Ca-Bentonite and Boom Clay

    SciTech Connect (OSTI)

    Mennecart, Thierry; Cachoir, Christelle; Lemmens, Karel [SCK-CEN, Boeretang 200, MOL, 2400 (Belgium)

    2007-07-01T23:59:59.000Z

    In order to determine in how far the clay properties influence the dissolution of spent fuel, experiments were carried out with depleted UO{sub 2} in the presence of either compacted dry Ca-bentonite with Boom Clay groundwater (KB-BCW) or compacted dry Boom Clay with Boom Clay groundwater (BC-BCW). The leach tests were performed at 25 deg. C in anoxic atmosphere for 2 years. The U concentrations in the clay water were followed during these 2 years, and the amount of U in the clay was determined after 2 years in order to determine the UO{sub 2} dissolution rate. The uranium concentration after 0.45 {mu}m filtration was 50 times higher in the Boom Clay with Boom Clay water (2.0 x 10{sup -7} mol.L{sup -1}) than in Ca-bentonite with Boom Clay water (6.5 x 10{sup -9} mol.L{sup -1}), probably due to colloid formation in the Boom Clay system. Most released uranium was found in the clay. The fraction of uranium, dissolved from the UO{sub 2} pellet and found on the clay represents about 42 % of total uranium release in the system BC-BCW and more than 76 % in the system KB-BCW. The higher uranium retention of Boom Clay goes together with a higher dissolution rate. Global dissolution rates were estimated at about 2.0 x 10{sup -2} {mu}g.cm{sup -2}.d{sup -1} for the BCBCW system and 3.4 x 10{sup -3} {mu}g.cm{sup -2}.d{sup -1} for the KB-BCW system. This is not much lower than for similar tests with spent fuel, reported in literature. (authors)

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

    SciTech Connect (OSTI)

    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

    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.

  14. Proportions of coarse and fine clay across the Cretaceous-Tertiary boundary in Milam, Falls, and Travis Counties, Texas

    E-Print Network [OSTI]

    Smith, John Charles

    1966-01-01T23:59:59.000Z

    for the investigation Explanation of Proposed Method Location of Clay Units Investigated Previous Investigations Methods of Investigation Eield Investigations Laboratory Investigations Hesults of the lnvcstigation 15 26 Locality I Locality II Locality III... and fine clay expressed as percentages of the total clay i'rection from Locality I . 30 Lattice spacings, mineral composition, indices, and intensities of typical samples from Locality I 33 Proportions for duplicate fractionations of coarse and fine...

  15. Microsecond ramp compression of a metallic liner driven by a 5 MA current on the SPHINX machine using a dynamic load current multiplier pulse shaping

    SciTech Connect (OSTI)

    D'Almeida, T.; Lassalle, F.; Morell, A.; Grunenwald, J.; Zucchini, F.; Loyen, A. [CEA, DAM, GRAMAT, F-46500 Gramat (France)] [CEA, DAM, GRAMAT, F-46500 Gramat (France); Maysonnave, T. [International Technologies for High Pulsed Power, F-46500 Thégra (France)] [International Technologies for High Pulsed Power, F-46500 Thégra (France); Chuvatin, A. S. [Laboratoire de Physique des Plasmas, Ecole Polytechnique, F-91128 Palaiseau (France)] [Laboratoire de Physique des Plasmas, Ecole Polytechnique, F-91128 Palaiseau (France)

    2013-09-15T23:59:59.000Z

    SPHINX is a 6 MA, 1-?s Linear Transformer Driver (LTD) operated by the CEA Gramat (France) and primarily used for imploding Z-pinch loads for radiation effects studies. Among the options that are currently being evaluated to improve the generator performances are an upgrade to a 20 MA, 1-?s LTD machine and various power amplification schemes, including a compact Dynamic Load Current Multiplier (DLCM). A method for performing magnetic ramp compression experiments, without modifying the generator operation scheme, was developed using the DLCM to shape the initial current pulse in order to obtain the desired load current profile. In this paper, we discuss the overall configuration that was selected for these experiments, including the choice of a coaxial cylindrical geometry for the load and its return current electrode. We present both 3-D Magneto-hydrodynamic and 1D Lagrangian hydrodynamic simulations which helped guide the design of the experimental configuration. Initial results obtained over a set of experiments on an aluminium cylindrical liner, ramp-compressed to a peak pressure of 23 GPa, are presented and analyzed. Details of the electrical and laser Doppler interferometer setups used to monitor and diagnose the ramp compression experiments are provided. In particular, the configuration used to field both homodyne and heterodyne velocimetry diagnostics in the reduced access available within the liner's interior is described. Current profiles measured at various critical locations across the system, particularly the load current, enabled a comprehensive tracking of the current circulation and demonstrate adequate pulse shaping by the DLCM. The liner inner free surface velocity measurements obtained from the heterodyne velocimeter agree with the hydrocode results obtained using the measured load current as the input. An extensive hydrodynamic analysis is carried out to examine information such as pressure and particle velocity history profiles or magnetic diffusion across the liner. The potential of the technique in terms of applications and achievable ramp pressure levels lies in the prospects for improving the DLCM efficiency through the use of a closing switch (currently under development), reducing the load dimensions and optimizing the diagnostics.

  16. Efficiency of clay-TiO2 nanocomposites on the photocatalytic elimination of a model hydrophobic air pollutant

    E-Print Network [OSTI]

    Kibanova, Daria

    2010-01-01T23:59:59.000Z

    of semiconductor photocatalysis Chem. Rev. 1995, 95, 69-effluents by TiO 2 photocatalysis Catalysis Today 2000, 63,clay on adsorption and photocatalysis of gaseous molecules

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

    SciTech Connect (OSTI)

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

    2014-05-15T23:59:59.000Z

    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.

  18. Diagenetic clays as pore-lining minerals in coalbed methane reservoirs

    SciTech Connect (OSTI)

    Fowler, K.S.; Nick, K.E. (STIM-LAB, Inc., Duncan, OK (United States))

    1996-01-01T23:59:59.000Z

    Cleat surfaces from Mary Lee and Black Creek coal seams in the Black Warrior Basin and Fruitland coal from the San Juan Basin show significant amounts of diagenetic quartz, illite, kaolinite, carbonate minerals, barite, gypsum and iron sulfides and sulfates. SEM, XRD, thin section and reflected light microscopy analyses were used to identify and describe diagenetic minerals and surface textures observed along permeable cleat surfaces. SEM-EDS analysis reveals a variety of pore-lining diagenetic minerals with complex crystal morphologies in permeable cleats of preserved core and mine samples. Surface textures were varied from smooth and vitreous, dull and pitted, to rough and irregular with imbedded diagenetic minerals, often clays or sulfides. Illite is the most abundant clay and occurs as surface coatings, aggregates, authigenic crystals embedded in the coal surface, or oriented subparallel to the fracture face. Kaolinite is also abundant and occurs as abraded platelets and loosely attached aggregates packed against steps, as meniscus shapes on smooth fracture faces, and as a thick crust of anhedral crystals. Chlorite, the least abundant clay, appears as sheets of small crystals. Locally abundant sulfate, sulfide and carbonate minerals are present in masses of euhedral crystals or concentrated as thick crusts. Surface irregularities sometimes control the distribution of diagenetic minerals. Coal fines of unambiguous internal origin and masses of clays are often concentrated at surface irregularities such as steps, laminations of interbedded clays, or sulfides and coal and rough areas of fractures. Their distribution suggests mobility within fractures.

  19. Diagenetic clays as pore-lining minerals in coalbed methane reservoirs

    SciTech Connect (OSTI)

    Fowler, K.S.; Nick, K.E. [STIM-LAB, Inc., Duncan, OK (United States)

    1996-12-31T23:59:59.000Z

    Cleat surfaces from Mary Lee and Black Creek coal seams in the Black Warrior Basin and Fruitland coal from the San Juan Basin show significant amounts of diagenetic quartz, illite, kaolinite, carbonate minerals, barite, gypsum and iron sulfides and sulfates. SEM, XRD, thin section and reflected light microscopy analyses were used to identify and describe diagenetic minerals and surface textures observed along permeable cleat surfaces. SEM-EDS analysis reveals a variety of pore-lining diagenetic minerals with complex crystal morphologies in permeable cleats of preserved core and mine samples. Surface textures were varied from smooth and vitreous, dull and pitted, to rough and irregular with imbedded diagenetic minerals, often clays or sulfides. Illite is the most abundant clay and occurs as surface coatings, aggregates, authigenic crystals embedded in the coal surface, or oriented subparallel to the fracture face. Kaolinite is also abundant and occurs as abraded platelets and loosely attached aggregates packed against steps, as meniscus shapes on smooth fracture faces, and as a thick crust of anhedral crystals. Chlorite, the least abundant clay, appears as sheets of small crystals. Locally abundant sulfate, sulfide and carbonate minerals are present in masses of euhedral crystals or concentrated as thick crusts. Surface irregularities sometimes control the distribution of diagenetic minerals. Coal fines of unambiguous internal origin and masses of clays are often concentrated at surface irregularities such as steps, laminations of interbedded clays, or sulfides and coal and rough areas of fractures. Their distribution suggests mobility within fractures.

  20. Hydration of Clays at the Molecular Scale: The Promising Perspective of Classical Density Functional Theory

    E-Print Network [OSTI]

    Jeanmairet, Guillaume; Levesque, Maximilien; Rotenberg, Benjamin; Borgis, Daniel

    2014-01-01T23:59:59.000Z

    We report here how the hydration of complex surfaces can be efficiently studied thanks to recent advances in classical molecular density functional theory. This is illustrated on the example of the pyrophylite clay. After presenting the most recent advances, we show that the strength of this implicit method is that (i) it is in quantitative or semi-quantitative agreement with reference all-atoms simulations (molecular dynamics here) for both the solvation structure and energetics, and that (ii) the computational cost is two to three orders of magnitude less than in explicit methods. The method remains imperfect, in that it locally overestimates the polarization of water close to hydrophylic sites of the clay. The high numerical efficiency of the method is illustrated and exploited to carry a systematic study of the electrostatic and van der Waals components of the surface-solvant interactions within the most popular force field for clays, CLAYFF. Hydration structure and energetics are found to weakly depend u...