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


1

Wearability of Portland Cement Concrete Pavement Finishes  

E-Print Network [OSTI]

Major Subject: Civil Engineering NEARABILITY OF PORTLAND CENENT CONCRETE PAPFNENT FIVISNFS A Thesis by Nilliam Rem NcKeen Approved as to style and content by: (Chairman of Committ e) (Nember) August 1971 ABSTRACT Hearabil'tv of Portland Cement... portland cement, and an air entrainment admixture. Standard laboratory tests were performed on all aggregates to determine their properties. iv The test specimens were molded in a controlled environmental room and the anpropriate surface finish (burlap...

McKeen, William Rew

1971-01-01T23:59:59.000Z

2

Stabilizing coal-water mixtures with Portland cement  

DOE Patents [OSTI]

Coal-water mixes stabilized by the addition of Portland cement which may additionally contain retarding carbohydrates, or borax are described. 1 tab.

Steinberg, M.; Krishna, C.R.

1984-10-17T23:59:59.000Z

3

Portland Cement Concrete Pavement Shannon Golden, Alabama DOT  

E-Print Network [OSTI]

Portland Cement Concrete Pavement Shannon Golden, Alabama DOT PORTLAND CEMENT CONCRETE PAVEMENT PROJECT · First in Alabama in more than 25 years! · IM-I059 (342) Etowah County ­ I-59 Concrete Pavement Rehabilitation with Unbonded Concrete Overlay ­ Length: 10.9 miles ­ Thickness: 11.0 to 13.5 inches ­ Volume: 300

4

Alternative Fuel for Portland Cement Processing  

SciTech Connect (OSTI)

The production of cement involves a combination of numerous raw materials, strictly monitored system processes, and temperatures on the order of 1500 °C. Immense quantities of fuel are required for the production of cement. Traditionally, energy from fossil fuels was solely relied upon for the production of cement. The overarching project objective is to evaluate the use of alternative fuels to lessen the dependence on non-renewable resources to produce portland cement. The key objective of using alternative fuels is to continue to produce high-quality cement while decreasing the use of non-renewable fuels and minimizing the impact on the environment. Burn characteristics and thermodynamic parameters were evaluated with a laboratory burn simulator under conditions that mimic those in the preheater where the fuels are brought into a cement plant. A drop-tube furnace and visualization method were developed that show potential for evaluating time- and space-resolved temperature distributions for fuel solid particles and liquid droplets undergoing combustion in various combustion atmospheres. Downdraft gasification has been explored as a means to extract chemical energy from poultry litter while limiting the throughput of potentially deleterious components with regards to use in firing a cement kiln. Results have shown that the clinkering is temperature independent, at least within the controllable temperature range. Limestone also had only a slight effect on the fusion when used to coat the pellets. However, limestone addition did display some promise in regards to chlorine capture, as ash analyses showed chlorine concentrations of more than four times greater in the limestone infused ash as compared to raw poultry litter. A reliable and convenient sampling procedure was developed to estimate the combustion quality of broiler litter that is the best compromise between convenience and reliability by means of statistical analysis. Multi-day trial burns were conducted at a full-scale cement plant with alternative fuels to examine their compatibility with the cement production process. Construction and demolition waste, woodchips, and soybean seeds were used as alternative fuels at a full-scale cement production facility. These fuels were co-fired with coal and waste plastics. The alternative fuels used in this trial accounted for 5 to 16 % of the total energy consumed during these burns. The overall performance of the portland cement produced during the various trial burns performed for practical purposes very similar to the cement produced during the control burn. The cement plant was successful in implementing alternative fuels to produce a consistent, high-quality product that increased cement performance while reducing the environmental footprint of the plant. The utilization of construction and demolition waste, woodchips and soybean seeds proved to be viable replacements for traditional fuels. The future use of these fuels depends on local availability, associated costs, and compatibility with a facility??s production process.

Anton K. Schindler; Steve R. Duke; Thomas E. Burch; Edward W. Davis; Ralph H. Zee; David I. Bransby; Carla Hopkins; Rutherford L. Thompson; Jingran Duan; Vignesh Venkatasubramanian; Stephen Giles.

2012-06-30T23:59:59.000Z

5

Identification and characterization of agent for reductive dechlorination in mixtures of ferrous iron and Portland cement  

E-Print Network [OSTI]

were conducted to identify a potential active agent in a mixture of Fe(II) and Portland cement extract (PCX). Results of XRD analysis indicated that a potential active agent is likely to be green rust chloride, which is a layered Fe...

Ko, Sae Bom

2001-01-01T23:59:59.000Z

6

Identification of active agents for tetrachloroethylene degradation in Portland cement slurry containing ferrous iron  

E-Print Network [OSTI]

-EDS) were used to identify minerals in chemical mixtures that have high activities. Results indicate that active agents for PCE degradation in Portland cement slurries and in cement extracts might be one of several AFm phases. However, systems without cement...

Ko, Sae Bom

2006-08-16T23:59:59.000Z

7

COMPOSITE PORTLAND CEMENT CONCRETE PAVEMENTS (Tollway) Effective: January 30, 2012  

E-Print Network [OSTI]

COMPOSITE PORTLAND CEMENT CONCRETE PAVEMENTS (Tollway) Effective: January 30, 2012 Revised: May 8 for special applications to composite pavements as shown and described on the Drawings and in this Special as required; 5. Constructing the composite pavement on a prepared subgrade, or subbase, without forms. 6

8

Contact Mechanics Based Mechanical Characterization of Portland Cement Paste  

E-Print Network [OSTI]

that the calcium silicate hydrate (C-S-H) phase of hydrated portland cement has different properties on the nanometric scale than on the micron scale. Packing density of C-S-H particles is proposed as an explanation for the disparity in the measured results...

Jones, Christopher

2012-02-14T23:59:59.000Z

9

Rapid setting of portland cement by greenhouse carbon dioxide capture  

SciTech Connect (OSTI)

Following the work by Berger et al. on rapid setting of calcium silicates by carbonation, a method of high-volume capture of CO{sub 2} in portland cement has been developed. Typically, 10--24 wt. % of CO{sub 2} produced by the calcination of calcium carbonate during clinkering, may be captured, and the set cement acquires most of its full strength in less than a day. The approach will have economic advantages in fabrication of precast structures, in emergency development of infrastructure during natural disasters, and in defense applications. Moreover, it will help the cement industry comply with the Clean Air Act of 1990 by sequestering the greenhouse carbon dioxide.

Wagh, A.S.; Singh, D.; Knox, L.J.

1994-04-01T23:59:59.000Z

10

Portland cement mortar modified with latex and fiber glass for thin shell construction  

E-Print Network [OSTI]

and materials required for the elaborate formwork. Building codes are also in need of revision to include provisions for thin shell construction. The objective of this study was to investigate the possible potential use of portland cement mortar modified...

Raymond, Jewell Duane

1963-01-01T23:59:59.000Z

11

Assessment of durability performance of "Early-Opening-to-Traffic" Portland Cement Concrete pavement and patches  

E-Print Network [OSTI]

This study relates the assessment of durability to ''early-opening-to-traffic'' (EOT) portland cement concrete (PCC). Several factors were identified relative to the performance of EOT PCC. Each of these factors was considered in terms of freeze...

Shrestha, Pradhumna Babu

1999-01-01T23:59:59.000Z

12

The physical and chemical aspects of the leaching behavior of metals from portland cement  

E-Print Network [OSTI]

THE PHYSICAL AND CHEMICAL ASPECTS OF THE LEACHING BEHAVIOR OF METALS FROM PORTLAND CEMENT A Thesis by RICARDO CORYE DAVIS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1990 Major Subject: Chemistry THE PHYSICAL AND CHEMICAL ASPECTS OF THE LEACHING BEHAVIOR OF METALS FROM PORTLAND CEMENT A Thesis by RICARDO CORYE DAVIS Approved as to style and content by: David L. Cocke (Co...

Davis, Ricardo Corye

1990-01-01T23:59:59.000Z

13

Determining the effective diffusivity of ions in hazardous wastes solidified by portland cement  

E-Print Network [OSTI]

DETERMINING THE EFFECTIVE DIFFUSIVITY OF TONS IN HAZARDOUS WASTES SOLIDIFIED BY PORTLAND CEMENT A Thesis by GLEN GREGORY TAFFINDER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1991 Major Subject: Civil Engineering DETERMINING THE EFFECTIVE DIFFUSIVITY OF TONS IN HAZARDOUS WASTES SOLIDIFIED BY PORTLAND CEMENT A Thesis by GLEN GREGORY TAFFINDER Approved as to scyle and content by: Bill...

Taffinder, Glen Gregory

1991-01-01T23:59:59.000Z

14

Preliminary non-destructive assessment of moisture content, hydration and dielectric properties of Portland cement concrete  

E-Print Network [OSTI]

PRELIMINARY NON-DESTRUCTIVE ASSESSMENT OF MOISTURE CONTENT, HYDRATION AND DIELECTRIC PROPERTIES OF PORTLAND CEMENT CONCRETE A Thesis by IVAN AVELAR LEZAMA Submitted to the Office of Graduate Studies of Texas A... AND DIELECTRIC PROPERTIES OF PORTLAND CEMENT CONCRETE A Thesis by IVAN AVELAR LEZAMA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE...

Avelar Lezama, Ivan

2007-04-25T23:59:59.000Z

15

In What Form is Lime Present in Portland Cement  

E-Print Network [OSTI]

to obtain Si02.33a0, In his conclusions Hebuffat does not consider it of importance whether alit consists of pure Si02.3CaO or a crystalline compound of Si02.2CaO with 3a0 and an aluminate. He says the aluminate in Portland dement can not be Al 203.30a..., Erd- meyer, Nev/berry's, Zulkowski, Rebuff at, Meyers, Richardson, Michaelis and Meade d. Work of the Carbegie Institute of Washington on CaO #Si0 2 series and binary compounds of Al 23> Si0 2, MgO, CaO. On the presence of free lime in cement...

Wright, Claude W.

1910-01-01T23:59:59.000Z

16

Portland cement for SO/sub 2/ control in coal-fired power plants  

DOE Patents [OSTI]

A method is described for removing oxides of sulfur from the emissions of fossil fuel combustion by injecting portland cement into the boiler with the fuel, the combustion air, or downstream with the combustion gases. The cement products that result from this method is also described. 1 tab.

Steinberg, M.

1984-10-17T23:59:59.000Z

17

Portland cement for SO.sub.2 control in coal-fired power plants  

DOE Patents [OSTI]

There is described a method of removing oxides of sulfur from the emissions of fossil fuel combustion by injecting portland cement into the boiler with the fuel, the combustion air, or downstream with the combustion gases. There is also described the cement products that result from this method.

Steinberg, Meyer (Melville, NY)

1985-01-01T23:59:59.000Z

18

INTRODUCTION Portland cement concrete (PCC) is the world's most versatile and utilized construction material. Modern concrete consists of six  

E-Print Network [OSTI]

INTRODUCTION Portland cement concrete (PCC) is the world's most versatile and utilized construction material. Modern concrete consists of six main ingredients: coarse aggregate, sand, portland cement agreement that the use of SCMs has the following effects in concrete: 1. Improved workability and finish

Harms, Kyle E.

19

Energy conservation potential of Portland cement particle size distribution control, Phase 2  

SciTech Connect (OSTI)

The main objectives of Phase 2 are to determine the feasibility of using cements with controlled particle size distributions (CPSD cements) in practical concrete applications, and to refine our estimates of the potential energy savings that may ensue from such use. The work in Phase 2 is divided into two main tasks, some parts of which will be carried out simultaneously: Task 1 will continue cement paste studies to optimize cement performance similar to those of Phase 1, but with particular emphasis on gypsum requirements, blended cements, and water-reducing admixtures. This task will also include preparation of sufficient CPSD cements for use in all Phase 2 work. Task 2 will be a comprehensive examination of the properties of concretes made with CPSD cements. This will include optimization of concrete mix designs to obtain the best possible performance for practical applications of both portland and blended cements. The effects of chemical admixtures and curing temperature variations will also be determined.

Helmuth, R.A; Whiting, D.A.

1983-01-01T23:59:59.000Z

20

A study of immobilization of four heavy metals by solidification/stabilization with portland cement  

E-Print Network [OSTI]

A STUDY OF IMMOBILIZATION OF FOUR HEAUY METALS BY SOLIDIFICATION/STABILIZATION WITH PORTLAND CEMEhK A Thesis by SUSAN ANN TRUSSELL Submitted to Texas AdcM University in partial fulfillment of the requirements for the degree of MASTER... of Immobilization of Four Heavy Metals By Solidification/Stabilization with Portland Cement. (May 1994) Susan Trussell, B. S. , Baylor University; M. A. , Texas ARM University Chair of Advisory Committee: Dr. Bill Batchelor Immobilization of four heavy metals...

Trussell, Susan A

1994-01-01T23:59:59.000Z

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


21

african portland cement: Topics by E-print Network  

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

present in hardened cement blends in the long term Sheffield, University of 337 NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration Engineering Websites Summary: NISTIR...

22

[ ]May 2014 Portland cement concrete (PCC) overlays have been used with great success in many locations  

E-Print Network [OSTI]

accelerated pavement testing on bonded concrete overlay pavements to be constructed at the Pavement Research testing; evaluate the structural bearing capacity of the concrete overlay pavement structures[ ]May 2014 PROBLEM Portland cement concrete (PCC) overlays have been used with great success

Harms, Kyle E.

23

Concrete international /january 2010 35 Portland limestone cement (PLC) is produced by  

E-Print Network [OSTI]

Concrete international /january 2010 35 Portland limestone cement (PLC) is produced by blending demonstration of PLC concrete in the late-fall construction of a parking lot at a ready mixed concrete plant near Gatineau, QC, Canada. The performance of the plastic and hardened concretes produced with PLC

24

Capture of green-house carbon dioxide in Portland cement  

SciTech Connect (OSTI)

A novel process has been developed to sequester green-house carbon dioxide produced by the cement industry in precast cement products. Typically, 10--24 wt % of CO{sub 2} produced by calcination of calcium carbonate during clinkering of the cement may be captured. The carbonation process also cures the cement paste within minutes into hard bodies. The process maintains high pH conditions during curing, to allow conventional steel reinforcement of concrete. The process will save time and money to the cement industry, and at the same time, help them to comply with the Clean Air Act by sequestering the green-house carbon dioxide.

Wagh, A.S.; Singh, D.; Pullockaran, J.; Knox, L.

1993-12-31T23:59:59.000Z

25

Carbon nanotube and nanofiber reinforcement for improving the flexural strength and fracture toughness of portland cement paste  

E-Print Network [OSTI]

The focus of the proposed research will be on exploring the use of nanotechnology-based nano-filaments, such as carbon nanotubes (CNTs) and nanofibers (CNFs), as reinforcement in improving the mechanical properties of portland cement paste as a...

Tyson, Bryan Michael

2012-07-16T23:59:59.000Z

26

A Coupled Nanoindentation/SEM-EDS Study on Low Water/Cement Ratio Portland Cement Paste: Evidence for C-S-H/Ca(OH)[subscript 2] Nanocomposites  

E-Print Network [OSTI]

A low water/cement ratio (w/c=0.20) hydrated Portland cement paste was analyzed by grid-indentation coupled with ex situ scanning electron microscope-energy-dispersive X-ray spectra (SEM-EDS) analysis at each indentation ...

Chen, Jeffrey J.

27

Effects of composition and exposure on the solar reflectance of Portland cement concrete  

SciTech Connect (OSTI)

Increasing the solar reflectance (albedo) of a paved surface keeps it cooler in the sun, reducing convection of heat from pavement to air and thereby decreasing the ambient air temperature. Simulations of the influence of pavement albedo on air temperature in Los Angeles predict that increasing the albedo of 1,250 km2 of pavement by 0.25 would save cooling energy worth $15M yr-1, and reduce smog-related medical and lost-work expenses by $76M yr-1. Most sidewalks and a small fraction of roads and parking areas are paved with portland cement concrete, which can be made quite reflective through suitable choice of cement and aggregate. Variations with composition and environmental exposure of the albedos of portland cement concrete pavements were investigated through laboratory fabrication and exposure of 32 mixes of concrete. Twenty-four mixes yielded substandard, ''rough'' concretes due to high, unmet aggregate water demand. The albedos of the remaining eight ''smooth'' concrete mixes ranged from 0.41 to 0.77 (mean 0.59). Simulated weathering, soiling, and abrasion each reduced average concrete albedo (mean decreases 0.06, 0.05, and 0.19, respectively), though some samples became slightly more reflective through weathering or soiling. Simulated rain (wetting) strongly depressed the albedos of concretes (mean decrease 0.23) until their surfaces were dried. Concrete albedo grew as the cement hydration reaction progressed (mean increase 0.08), but stabilized within six weeks of casting. White-cement concretes were on average significantly more reflective than gray-cement concretes. The albedo of the most-reflective white-cement concrete was 0.18 to 0.39 higher than that of the most-reflective gray-cement concrete, depending on state of exposure. Concrete albedo generally correlated with cement albedo and sand albedo, and, after abrasion, with rock albedo. Cement albedo had a disproportionately strong influence on the reflectance of concrete. Efflorescence and surface carbonation whitened some gray-cement mixes.

Levinson, Ronnen; Akbari, Hashem

2001-12-21T23:59:59.000Z

28

Plant-Wide Energy Efficiency Assessment at the Arizona Portland Cement Plant in Rillito, Arizona  

SciTech Connect (OSTI)

A Department of Energy Plant-wide Assessment was undertaken by Arizona Portland Cement (APC) beginning in May 2005. The assessment was performed at APCs cement production facility in Rillito, Arizona. The assessment included a compressed air evaluation along with a detailed process audit of plant operations and equipment. The purpose of this Energy Survey was to identify a series of energy cost savings opportunities at the Plant, and provide preliminary cost and savings estimates for the work. The assessment was successful in identifying projects that could provide annual savings of over $2.7 million at an estimated capital cost of $4.3 million. If implemented, these projects could amount to a savings of over 4.9 million kWh/yr and 384,420 MMBtu/year.

Stephen J. Coppinger, P.E.; Bruce Colburn, Ph.D., P.E., CEM

2007-05-17T23:59:59.000Z

29

Use of waste gypsum to replace natural gypsum as set retarders in portland cement  

SciTech Connect (OSTI)

The present study is focused on clarifying the influence of waste gypsum (WG) in replacing natural gypsum (NG) in the production of ordinary Portland cement (OPC). WG taken from slip casting moulds in a ceramic factory was formed from the hydration of plaster of paris. Clinker and 3-5 wt% of WG was ground in a laboratory ball mill to produce cement waste gypsum (CMWG). The same procedure was repeated with NG to substitute WG to prepare cement natural gypsum (CMNG). The properties of NG and WG were investigated via X-ray Diffraction (XRD), X-ray fluorescence (XRF) and differential scanning calorimetry (DSC)/thermogravimetric (TG) to evaluate the properties of CMNG and CMWG. The mechanical properties of cement were tested in terms of setting time, flexural and compressive strength. The XRD result of NG revealed the presence of dihydrate while WG contained dihydrate and hemihydrate. The content of dihydrate and hemihydrates were obtained via DSC/TG, and the results showed that WG and NG contained 12.45% and 1.61% of hemihydrate, respectively. Furthermore, CMWG was found to set faster than CMNG, an average of 15.29% and 13.67% faster for the initial and final setting times, respectively. This was due to the presence of hemihydrate in WG. However, the values obtained for flexural and compressive strength were relatively the same for CMNG and CMWG. Therefore, this result provides evidence that WG can be used as an alternative material to NG in the production of OPC.

Chandara, Chea; Azizli, Khairun Azizi Mohd [School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang (Malaysia); Ahmad, Zainal Arifin [School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang (Malaysia)], E-mail: zainal@eng.usm.my; Sakai, Etsuo [Tokyo Institute of Technology, Graduate School of Science and Engineering, Department of Metallurgy and Ceramic Science, 2-12-1 Meguro-ku, Ookayama, Meguro-ku, Tokyo 152-8552 (Japan)

2009-05-15T23:59:59.000Z

30

Permeability of consolidated incinerator facility wastes stabilized with portland cement  

SciTech Connect (OSTI)

The Consolidated Incinerator Facility (CIF) at the Savannah River Site (SRS) burns low-level radioactive wastes and mixed wastes as a method of treatment and volume reduction. The CIF generates secondary waste, which consists of ash and offgas scrubber solution. Currently the ash is stabilized/solidified in the Ashcrete process. The scrubber solution (blowdown) is sent to the SRS Effluent Treatment Facility (ETF) for treatment as wastewater. In the past, the scrubber solution was also stabilized/solidified in the Ashcrete process as blowcrete, and will continue to be treated this way for listed waste burns and scrubber solutions that do not meet the ETF Waste Acceptance Criteria (WAC). The disposal plan for Ashcrete and special case blowcrete is to bury these containerized waste forms in shallow unlined trenches in E-Area. The WAC for intimately mixed, cement-based wasteforms intended for direct disposal specifies limits on compressive strength and permeability. Simulated waste and actual CIF ash and scrubber solution were mixed in the laboratory and cast into wasteforms for testing. Test results and related waste disposal consequences are given in this report.

Walker, B.W.

2000-04-19T23:59:59.000Z

31

Investigation of the formation of a Portland Cement plant detached plume  

SciTech Connect (OSTI)

A gaseous and particulate-source emissions sampling program was conducted at a Portland Cement production plant in Rapid City, South Dakota. The study was conducted to determine the cause of the formation of an opaque detached plume from the plants' dry process kiln. The instack opacity of the emissions was less than 10% while the opacity of the plume five to ten stack diameters from the mouth of the stack was in excess of 40%, thus giving an appearance of a detached plume. The sampling and analysis program included particulate emissions measurements, particle sizing and composition, and measurements of gaseous and particle ammonia, chloride, fluoride, and sulfur dioxide. Extensive process materials sampling and analysis were also conducted. Based on the resulting data, one conclusion is that the opaque detached plume is the result of ammonium chloride particles formed by the reaction of gaseous ammonia and hydrochloric acid. It was also found that the ammonia in the cement plant was generated from the shale portion of the raw products when the raw product was passed through the heat exchanger.

Cheney, J.L.; Knapp, K.T.

1986-05-01T23:59:59.000Z

32

Thermal stability of certain hydrated phases in systems made using portland cement. Final report  

SciTech Connect (OSTI)

As part of the study of hydraulic-cement system for use in possible underground isolation of nuclear wastes, this study was made to determine the temperature stability of ettringite and chloroaluminate. Either or both of these phases may be expected in a hydraulic cement system depending on the presence of salt (NaCl). The study of ettringite was made using 15 mixtures that contained portland cement, plaster, 2 levels of water, and in some mixtures, 1 of 6 pozzolans (3 fly ashes, 1 slag, a silica fume, a natural pozzolan), plus a 16th mixture with anhydrous sodium sulfate replacing plaster (CaSO4 . 1/2H20). Specimens were made and stored at 23, 50, and 75 C or 23, 75, and 100 C (all four temperatures in one case) for periodic examination by x-ray diffraction for phase compositiion and ettringite stability, and testing for compressive strength and restrained expansion. A more limited study of the stability of chloroaluminate was made along the same lines using fewer mixtures, salt instead of plaster, and higher temperatures plus some pressure. It was found that while some ettringette was decomposed at 75 C, depending on the composition of the mixture, all ettringite was undetectable by x-ray diffraction at 100 C, usually within a few days. The evidence indicates that the ettringite became amorphous and no significant test phases formed in its place. Since there was no corresponding loss in strength or reduction in volume, this loss of ettringite crystallinity was considered to be damaging. Based on much more limited data, chloroaluminate was found to decompose between 130 C at 25 psi and 170 C at 100 psi; no significant phases replaced it.

Buck, A.D.; Burkes, J.P.; Poole, T.S.

1985-08-01T23:59:59.000Z

33

Effect of temperature on the hydration of Portland cement blended with siliceous fly ash  

SciTech Connect (OSTI)

The effect of temperature on the hydration of Portland cement pastes blended with 50 wt.% of siliceous fly ash is investigated within a temperature range of 7 to 80 C. The elevation of temperature accelerates both the hydration of OPC and fly ash. Due to the enhanced pozzolanic reaction of the fly ash, the change of the composition of the CSH and the pore solution towards lower Ca and higher Al and Si concentrations is shifted towards earlier hydration times. Above 50 C, the reaction of fly ash also contributes to the formation of siliceous hydrogarnet. At 80 C, ettringite and AFm are destabilised and the released sulphate is partially incorporated into the CSH. The observed changes of the phase assemblage in dependence of the temperature are confirmed by thermodynamic modelling. The increasingly heterogeneous microstructure at elevated temperatures shows an increased density of the CSH and a higher coarse porosity. -- Highlights: The reaction of quartz powder at 80 C strongly enhances the compressive strength. Almost no strength increase of fly ash blended OPC at 80 C was found after 2 days. Siliceous hydrogarnet is formed upon the reaction of fly ash at high temperatures. Temperature dependent change of the system was simulated by thermodynamic modelling. Destabilisation of ettringite above 50 C correlates with sulphate content of CSH.

Deschner, Florian, E-mail: florian.deschner@gmail.com [Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Concrete and Construction Chemistry, berlandstrasse 129, 8600 Dbendorf (Switzerland)] [Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Concrete and Construction Chemistry, berlandstrasse 129, 8600 Dbendorf (Switzerland); Lothenbach, Barbara; Winnefeld, Frank [Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Concrete and Construction Chemistry, berlandstrasse 129, 8600 Dbendorf (Switzerland)] [Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Concrete and Construction Chemistry, berlandstrasse 129, 8600 Dbendorf (Switzerland); Neubauer, Jrgen [GeoZentrum Nordbayern, Mineralogy, University of Erlangen-Nuremberg, 91054 Erlangen (Germany)] [GeoZentrum Nordbayern, Mineralogy, University of Erlangen-Nuremberg, 91054 Erlangen (Germany)

2013-10-15T23:59:59.000Z

34

SENSITIVITY OF THE BOND STRENGTH TO THE STRUCTURE OF THE INTERFACE BETWEEN REINFORCEMENT AND CEMENT, AND THE  

E-Print Network [OSTI]

Ashland Petroleum Co. (Ashland, KY). Cement paste made from Portland cement (Type I) from Lafarge Corp

Chung, Deborah D.L.

35

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

SciTech Connect (OSTI)

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

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

1995-12-01T23:59:59.000Z

36

Examples of cooler reflective streets for urban heat-island mitigation : Portland cement concrete and chip seals  

SciTech Connect (OSTI)

Part of the urban heat island effect can be attributed to dark pavements that are commonly used on streets and parking lots. In this paper we consider two light colored, hence cooler, alternative paving materials that are in actual use in cities today. These are Portland cement concrete (PCC) pavements and chip seals. We report measurements of the albedos of some PCC and chip sealed pavements in the San Francisco Bay Area. The albedos of the PCC pavements ranged from about 0.18 to 0.35. The temperatures of some PCC pavements are also measured and calculated. We then consider how the albedos of the constituent materials of the PCC (stone, sand and cement) contribute to the albedos of the resulting finished concrete. The albedos of a set of chip sealed pavements in San Jose, CA, were measured and correlated with the times of their placement. It is found that the albedos decrease with age (and use) but remain higher than that of standard asphalt concrete (AC) for about five years. After t hat, the albedos of the chip seals are about 0.12, similar to aged AC. The fact that many PCC pavements have albedos at least twice as high as aged AC suggests that it is possible to have pavement albedos that remain high for many years.

Pomerantz, M.; Akbari, H.; Chang, S.-C.; Levinson, R.; Pon, B.

2003-04-30T23:59:59.000Z

37

The use of Devonian oil shales in the production of portland cement  

SciTech Connect (OSTI)

The Lafarge Corporation operates a cement plant at Alpena, Michigan in which Antrim shale, a Devonian oil shale, is used as part of the raw material mix. Using this precedent the authors examine the conditions and extent to which spent shale might be utilized in cement production. They conclude that the potential is limited in size and location but could provide substantial benefit to an oil shale operation meeting these criteria.

Schultz, C.W.; Lamont, W.E. [Alabama Univ., University, AL (United States); Daniel, J. [Lafarge Corp., Alpena, MI (United States)

1991-12-31T23:59:59.000Z

38

E-Print Network 3.0 - aluminate cements hydration Sample Search...  

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

INTRODUCTION Many entities currently use fly ash in portland cement concrete (PCC) pavements... Transportation & Development and Louisiana State University incorporating...

39

The use of electrical impedance spectroscopy for monitoring the hydration products of Portland cement mortars with high percentage of pozzolans  

SciTech Connect (OSTI)

In this paper, mortars and pastes containing large replacement of pozzolan were studied by mechanical strength, thermogravimetric analysis (TGA), scanning electronic microscopy (SEM), mercury intrusion porosimetry (MIP) and electrical impedance spectroscopy (EIS). The effect of metakaolin (35%) and fly ash (60%) was evaluated and compared with an inert mineral addition (andalusite). The portlandite content was measured, finding that the pozzolanic reaction produced cementing systems with all portlandite fixed. The EIS measurements were analyzed by the equivalent electrical circuit (EEC) method. An EEC with three branches in parallel was applied. The dc resistance was related to the degree of hydration and allowed us to characterize plain and blended mortars. A constant phase element (CPE) quantified the electrical properties of the hydration products located in the solidsolution interface and was useful to distinguish the role of inert and pozzolanic admixtures present in the cement matrix.

Cruz, J.M. [Departamento de Fsica Aplicada, Universitat Politcnica de Valncia, Camino de Vera, 46022, Valencia (Spain)] [Departamento de Fsica Aplicada, Universitat Politcnica de Valncia, Camino de Vera, 46022, Valencia (Spain); Fita, I.C., E-mail: infifer@fis.upv.es [Departamento de Fsica Aplicada, Universitat Politcnica de Valncia, Camino de Vera, 46022, Valencia (Spain); Soriano, L.; Pay, J.; Borrachero, M.V. [ICITECH, Instituto de Ciencia y Tecnologa del Hormign, Universitat Politcnica de Valncia (Spain)] [ICITECH, Instituto de Ciencia y Tecnologa del Hormign, Universitat Politcnica de Valncia (Spain)

2013-08-15T23:59:59.000Z

40

Multi-criteria analysis of the mechanism of degradation of Portland cement based mortars exposed to external sulphate attack  

SciTech Connect (OSTI)

This work aims to contribute to the design of durable concrete structures exposed to external sulphate attacks (ESA). Following a preliminary study aimed at designing a representative test, the present paper suggests a study on the effect of the water-to-cement (w/c) ratio and the cement composition in order to understand the degradation mechanisms. Length and mass measurements were registered continuously, leached calcium and hydroxide ions were also quantified. In parallel, scanning electron microscopy observations as well as X-ray microtomography were realised at different times to identify the formed products and the crack morphology. Test results provide information on the basic aspects of the degradation mechanism, such as the main role of leaching and diffusion in the sulphate attack process. The mortar composition with a low w/c ratio leads to a better resistance to sulphate attack because the microstructure is less permeable. Reducing the C{sub 3}A content results in a macro-cracking decrease but it does not prevent expansion, which suggests the contribution of other expansive products, such as gypsum, in damage due to ESA. The observation of the cracks network in the microstructure helps to understand the micro-mechanisms of the degradation process.

El-Hachem, R.; Roziere, E.; Grondin, F.; Loukili, A., E-mail: ahmed.loukili@ec-nantes.fr

2012-10-15T23:59:59.000Z

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


41

Use of Finite-element Analysis to Improve Well Cementing in HTHP Conditions  

E-Print Network [OSTI]

stresses of San Antonio cement (left) and PEEQ of cement San Antonio and Barco formation (right) after hydraulic fracturing ........ 103 Figure 5.1 UCS (top left), Young?s modulus (top right), and Poisson?s ratio (bottom) for Halliburton Portland... cements ............................................... 110 Figure 5.2 Tensile strength for Halliburton Portland cements ................................... 111 Figure 5.3 Stress strain-curve and photo of uniaxial test for Halliburton Portland cement...

Arias, Henry

2013-07-30T23:59:59.000Z

42

History and some potentials of oil shale cement  

SciTech Connect (OSTI)

The utilization of oil shale as a cement component is discussed. It was investigated in America and Europe during World War I. Additional development occurred in Western Europe, Russia, and China during the 1920s and 1930s. World War II provided further development incentives and a relatively mature technology was in place in Germany, Russia, and China prior to 1980. The utilization of oil shale in cement has taken a number of different paths. One approach has been to utilize the energy in the oil shale as the principal source for the cement plant and to use the combusted shale as a minor constituent of the plant's cement product. A second approach has been to use the combusted shale as a class C or cementitious fly-ash component in portland cement concrete. Other approaches utilizing eastern oil shale have been to use the combusted oil shale with additives as a specialty cement, or to cocombust the oil shale with coal and utilize the sulfur-rich combustion product.

Knutson, C.F.; Smith, R.P.; Russell, B.F. (Idaho National Engineering Lab., Idaho Falls, ID (USA))

1989-01-01T23:59:59.000Z

43

Improved cement quality and grinding efficiency by means of closed mill circuit modeling  

E-Print Network [OSTI]

..............................................................................................................................185 Page x LIST OF FIGURES Figure 1.1. Portland Cement (after Bhatty et al., 2004). ....................................................1 Figure 1.2. A Simplified Schematic of a Dry Cement Manufacturing Process. ................3 Figure 1....................................13 Figure 2.2. Typical Particle Size Distribution of a Type I Portland Cement Sample. .....16 Figure 2.3. Rosin-Rammler Representation of Cement PSD...........................................21 Figure 2.4. Blaine Calculation within the Particle...

Mejeoumov, Gleb Gennadievich

2009-05-15T23:59:59.000Z

44

Thermodynamics and cement science  

SciTech Connect (OSTI)

Thermodynamics applied to cement science has proved to be very valuable. One of the most striking findings has been the extent to which the hydrate phases, with one conspicuous exception, achieve equilibrium. The important exception is the persistence of amorphous C-S-H which is metastable with respect to crystalline calcium silicate hydrates. Nevertheless C-S-H can be included in the scope of calculations. As a consequence, from comparison of calculation and experiment, it appears that kinetics is not necessarily an insuperable barrier to engineering the phase composition of a hydrated Portland cement. Also the sensitivity of the mineralogy of the AFm and AFt phase compositions to the presence of calcite and to temperature has been reported. This knowledge gives a powerful incentive to develop links between the mineralogy and engineering properties of hydrated cement paste and, of course, anticipates improvements in its performance leading to decreasing the environmental impacts of cement production.

Damidot, D., E-mail: damidot@ensm-douai.fr [Universite Lille Nord de France (France); EM Douai, LGCgE-MPE-GCE, Douai (France); Lothenbach, B. [Empa, Lab. Concrete and Construction Chemistry, Duebendorf (Switzerland); Herfort, D. [Cementir Holding (Denmark); Glasser, F.P. [Chemistry Department, University of Aberdeen, Aberdeen (United Kingdom)

2011-07-15T23:59:59.000Z

45

Effect of Elevated Curing Temperature on Early Hydration and Microstructure of Composite Cements  

E-Print Network [OSTI]

Effect of Elevated Curing Temperature on Early Hydration and Microstructure of Composite Cements J, Seascale, Cumbria, CA20 1PG, UK Abstract The heat of hydration of a number of composite cement systems has of composite cements based on the partial replacement of Portland cement by waste materials has become

Sheffield, University of

46

Reductive dechlorination of chlorinated aliphatic hydrocarbons by Fe(ii) in degradative solidification/stabilization  

E-Print Network [OSTI]

............................................................................................7 2.1 Degradative Solidification/Stabilization...................................................7 2.2 Cement Chemistry.....................................................................................8 2.2.1 Portland Cement... of typical cements . .........................9 Table 2.2 Portland cement compound transformation................................................15 Table 2.3 The oxides, hydroxides, and oxyhydroxides of Fe.....................................16 Table 2...

Jung, Bahng Mi

2007-04-25T23:59:59.000Z

47

'The Overriding Demand for Energy Conservation in the Cement Industry' An Update  

E-Print Network [OSTI]

addi tives. While cement makes up only about 7 to 15 percent of the weight of concrete, it is 1:5y far the greatest contributor of energy content in the mixture. Cement, usually portland cement, is a product derived from pyro-processing calcareous... and argillaceous materials such as limestone and clay or shale into an intermediate fused material called clinker, which is subse quently ground together with a small amount of gypsum. Portland cement is the principal material produced by the U. S. cement...

Spellman, L. U.

1981-01-01T23:59:59.000Z

48

Cement fatigue and HPHT well integrity with application to life of well prediction  

E-Print Network [OSTI]

to the cyclic loading and few data sets may not be sufficient to give an adequate description of cement behavior under fatigue loading. Studies were conducted by Kim and Kim 2 on the fatigue behavior of high strength concrete using a type I Portland cement....3: Comparison of Max Stress Levels to Number of Cycles for Different Cement Strengths [2] Antrim 3 conducted fatigue studies on hardened ordinary Portland (type I) cement paste using 2 specimens; one with a high-water cement ratio of 0.7 and another...

Ugwu, Ignatius Obinna

2009-05-15T23:59:59.000Z

49

The Effect of Simulated Barium Carbonate Waste Stream on the Hydration of Composite Cement Systems  

E-Print Network [OSTI]

The Effect of Simulated Barium Carbonate Waste Stream on the Hydration of Composite Cement Systems cements, comprised of ordinary Portland cement (OPC) and blast furnace slag (BFS), are used to encapsulate it is not uncommon for up to 90% of the OPC to be replaced by BFS, which will have significant effects

Sheffield, University of

50

The effect of BaCO3 on the hydration of OPC and composite cements  

E-Print Network [OSTI]

The effect of BaCO3 on the hydration of OPC and composite cements Claire A. Utton* and Neil B of ordinary Portland cement (OPC) and up to 90% blast furnace slag (BFS), are used to encapsulate Intermediate. The effect of BaCO3 on the hydration properties of composite cements is being studied. This paper reports

Sheffield, University of

51

INVESTIGATIONS ON HYDRAULIC CEMENTS FROM SPENT OIL SHALE  

SciTech Connect (OSTI)

A process for making hydraulic cements from spent oil shale is described in this paper. Inexpensive cement is needed to grout abandoned in-situ retorts of spent shale for subsidence control, mitigation of leaching, and strengthening the retorted mass in order to recover oil from adjacent pillars of raw shale. A hydraulic cement was produced by heating a 1:1 mixture of Lurgi spent shale and CaCO{sub 3} at 1000 C for one hour. This cement would be less expensive than ordinary portland cement and is expected to fulfill the above requirements.

Mehta, P.K.; Persoff, P.

1980-04-01T23:59:59.000Z

52

E-Print Network 3.0 - ash cements stabilized Sample Search Results  

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

Science 6 By-Products Utilization Summary: OF WISCONSIN - MILWAUKEE 12;2 Use of Clean Coal Ash as Setting Time Regulator in Portland Cement by Zichao Wu... as setting time...

53

Solar Policy Environment: Portland  

Broader source: Energy.gov [DOE]

City of Portlands Solar Now! Program will pursue solar market transformation for Portland residents, businesses, and city operations. The program will work with other City bureaus to ease the regulatory process by streamlining city-level regulations for contractors, homeowners and businesses. The City will use its influence as a regulator, educator and motivator to reach the larger regional community.

54

Thermal Energy Storage/Waste Heat Recovery Applications in the Cement Industry  

E-Print Network [OSTI]

, and the Portland Cement Association have studied the potential benefits of using waste heat recovery methods and thermal energy storage systems in the cement manufacturing process. This work was performed under DOE Contract No. EC-77-C-01-50S4. The study has been...

Beshore, D. G.; Jaeger, F. A.; Gartner, E. M.

1979-01-01T23:59:59.000Z

55

Effective Permeability Change in Wellbore Cement with Carbon Dioxide Reaction  

SciTech Connect (OSTI)

Portland cement, a common sealing material for wellbores for geological carbon sequestration was reacted with CO{sub 2} in supercritical, gaseous, and aqueous phases at various pressure and temperature conditions to simulate cement-CO{sub 2} reaction along the wellbore from carbon injection depth to the near-surface. Hydrated Portland cement columns (14 mm diameter x 90 mm length; water-to-cement ratio = 0.33) including additives such as steel coupons and Wallula basalt fragments were reacted with CO{sub 2} in the wet supercritical (the top half) and dissolved (the bottom half) phases under carbon sequestration condition with high pressure (10 MPa) and temperature (50 C) for 5 months, while small-sized hydrated Portland cement columns (7 mm diameter x 20 mm length; water-to-cement ratio = 0.38) were reacted with CO{sub 2} in dissolved phase at high pressure (10 MPa) and temperature (50 C) for 1 month or with wet CO{sub 2} in gaseous phase at low pressure (0.2 MPa) and temperature (20 C) for 3 months. XMT images reveal that the cement reacted with CO{sub 2} saturated groundwater had degradation depth of {approx}1 mm for 1 month and {approx}3.5 mm for 5 month, whereas the degradation was minor with cement exposure to supercritical CO{sub 2}. SEM-EDS analysis showed that the carbonated cement was comprised of three distinct zones; the innermost less degraded zone with Ca atom % > C atom %, the inner degraded zone with Ca atom % {approx} C atom % due to precipitation of calcite, the outer degraded zone with C atom % > Ca atom % due to dissolution of calcite and C-S-H, as well as adsorption of carbon to cement matrix. The outer degraded zone of carbonated cement was porous and fractured because of dissolution-dominated reaction by carbonic acid exposure, which resulted in the increase in BJH pore volume and BET surface area. In contrast, cement-wet CO{sub 2}(g) reaction at low P (0.2 MPa)-T (20 C) conditions for 1 to 3 months was dominated by precipitation of micron-sized calcite on the outside surface of cement, which resulted in the decrease in BJH pore volume and BET surface area. Cement carbonation and pore structure change are significantly dependent on pressure and temperature conditions as well as the phase of CO{sub 2}, which controls the balance between precipitation and dissolution in cement matrix. Geochemical modeling result suggests that ratio of solid (cement)-to-solution (carbonated water) has a significant effect on cement carbonation, thus the cement-CO{sub 2} reaction experiment needs to be conducted under realistic conditions representing the in-situ wellbore environment of carbon sequestration field site. Total porosity and air permeability for a duplicate cement column with water-to-cement ratio of 0.38 measured after oven-drying by Core Laboratories using Boyle's Law technique and steady-state method were 31% and 0.576 mD. A novel method to measure the effective liquid permeability of a cement column using X-ray micro-tomography images after injection of pressurized KI (potassium iodide) is under development by PNNL. Preliminary results indicate the permeability of a cement column with water-to-cement ratio of 0.38 is 4-8 mD. PNNL will apply the method to understand the effective permeability change of Portland cement by CO{sub 2}(g) reaction under a variety of pressure and temperature conditions to develop a more reliable well-bore leakage risk model.

Um, Wooyong; Jung, Hun Bok; Martin, Paul F.; McGrail, B. Peter

2011-11-01T23:59:59.000Z

56

International Best Practices for Pre-Processing and Co-Processing Municipal Solid Waste and Sewage Sludge in the Cement Industry  

E-Print Network [OSTI]

air pollutant hydrogen fluoride Integrated Pollution Prevention and Controland control technology requirements for toxic air pollutants.control technologies for gaseous pollutants from Portland cement manufacturing (Greer 2003) Potential control technologies Mixing air

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

57

Effects of aluminosilicate minerals in clay soil fractions on pore water hydroxide ion concentrations in soil/cement matrices  

E-Print Network [OSTI]

form of montmorillonite, with 0. 5, 10, 20, and 40 percent bentonite by total, air-dry weight were mixed with Type I Portland cement at 10, 20, and 30 percent cement by weight of air-dry soil. Pore water was expressed and analyzed for hydroxide, calcium...

Cook, Evan Russell

1998-01-01T23:59:59.000Z

58

Tensile creep of soil-cement and its relationship to fatigue  

E-Print Network [OSTI]

Creep curves at different temperatures. 19 Log (D(t)-Dz) vs. log t at different temperatures. 68 69 INTRODUCTION Portland cement is an extremely important stabilizing agent for a wide range of soil types. Because of its strength-enhancing property... Mechanics (LEFM) is applicable to the investigation and determination of realistic failure criteria of fine-grained soils stabilized with Portland cement [27]. This is due to the fact that the radius of curvature at the tip of a microcrack is small...

Kim, Youngsoo

1985-01-01T23:59:59.000Z

59

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES  

E-Print Network [OSTI]

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES DEPARTMENT OF CIVIL & ENVIRONMENTAL Transportation System Performance Report December 27, 2005 #12;2Second Annual Portland Metropolitan Region Transportation System Performance Report Portland State University Center for Transportation Studies 2005

Bertini, Robert L.

60

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES  

E-Print Network [OSTI]

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES DEPARTMENT OF CIVIL & ENVIRONMENTAL ENGINEERING SCHOOL OF URBAN STUDIES AND PLANNING First Annual Portland Metropolitan Region Transportation System Performance Report September 8, 2004 #12;2First Annual Portland Metropolitan Region Transportation

Bertini, Robert L.

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


61

Fe-containing phases in hydrated cements  

SciTech Connect (OSTI)

In this study synchrotron X-ray absorption spectroscopy (XAS) has been applied, an element specific technique which allows Fe-containing phases to be identified in the complex mineral mixture of hydrated cements. Several Fe species contributed to the overall Fe K-edge spectra recorded on the cement samples. In the early stage of cement hydration ferrite was the dominant Fe-containing mineral. Ferrihydrite was detected during the first hours of the hydration process. After 1 day the formation of Al- and Fe-siliceous hydrogarnet was observed, while the amount of ferrihydrite decreased. The latter finding agrees with thermodynamic modeling, which predicts the formation of Fe-siliceous hydrogarnet in Portland cement systems. The presence of Al- and Fe-containing siliceous hydrogarnet was further substantiated in the residue of hydrated cement by performing a selective dissolution procedure. - Highlights: Fe bound to ferrihydrite at early age hydration Fe found to be stable in siliceous hydrogarnet at longer term age hydration Fe-containing AFt and AFm phases are less stable than siliceous hydrogarnet. The study demonstrates EXAFS used to identify amorphous or poorly crystalline phases.

Dilnesa, B.Z., E-mail: belay.dilnesa@gmail.com [Empa, Laboratory for Concrete and Construction Chemistry, berlandstrasse 129, 8600 Dbendorf (Switzerland); Wieland, E. [Paul Scherrer Institute, Laboratory for Waste Management, 5232 Villigen PSI (Switzerland); Lothenbach, B. [Empa, Laboratory for Concrete and Construction Chemistry, berlandstrasse 129, 8600 Dbendorf (Switzerland); Dhn, R. [Paul Scherrer Institute, Laboratory for Waste Management, 5232 Villigen PSI (Switzerland); Scrivener, K.L. [Ecole Polytechnique Federal de Lausanne (EPFL), Laboratory for Construction Materials, 1015 Lausanne (Switzerland)

2014-04-01T23:59:59.000Z

62

Portland Community College Celebrates Commissioning of Combined...  

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

Portland Community College Celebrates Commissioning of Combined Heat and Power Fuel Cell System Portland Community College Celebrates Commissioning of Combined Heat and Power Fuel...

63

Portland Diversifying Weatherization Workforce  

Broader source: Energy.gov [DOE]

An agreement signed by a diverse group of stakeholders ensures that those in disadvantaged communities have access to some of the weatherization jobs stemming from the pilot phase of the Clean Energy Works Portland program, which has almost 500 homes receiving retrofits through the summer with the help of federal dollars.

64

Portland Summary of Reported Data | Department of Energy  

Energy Savers [EERE]

Summary of Reported Data Portland Summary of Reported Data Summary of data reported by Better Buildings Neighborhood Program partner Portland, Oregon. Portland Summary of Reported...

65

Corrosion of aluminium metal in OPC- and CAC-based cement matrices  

SciTech Connect (OSTI)

Corrosion of aluminium metal in ordinary Portland cement (OPC) based pastes produces hydrogen gas and expansive reaction products causing problems for the encapsulation of aluminium containing nuclear wastes. Although corrosion of aluminium in cements has been long known, the extent of aluminium corrosion in the cement matrices and effects of such reaction on the cement phases are not well established. The present study investigates the corrosion reaction of aluminium in OPC, OPC-blast furnace slag (BFS) and calcium aluminate cement (CAC) based systems. The total amount of aluminium able to corrode in an OPC and 4:1 BFS:OPC system was determined, and the correlation between the amount of calcium hydroxide in the system and the reaction of aluminium obtained. It was also shown that a CAC-based system could offer a potential matrix to incorporate aluminium metal with a further reduction of pH by introduction of phosphate, producing a calcium phosphate cement.

Kinoshita, Hajime, E-mail: h.kinoshita@sheffield.ac.uk [Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom)] [Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom); Swift, Paul; Utton, Claire [Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom)] [Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom); Carro-Mateo, Beatriz [The Public University of Navarra, C/Esquroz, 30 trasera, Pamplona 31007 (Spain)] [The Public University of Navarra, C/Esquroz, 30 trasera, Pamplona 31007 (Spain); Marchand, Geraldine [The National Institute of Applied Sciences (INSA) Lyon, 20 Avenue Albert Einstein 69621 Villeurbanne Cedex (France)] [The National Institute of Applied Sciences (INSA) Lyon, 20 Avenue Albert Einstein 69621 Villeurbanne Cedex (France); Collier, Nick [National Nuclear Laboratory, Chadwick House, Birchwood Park, Warrington, WA3 6AE (United Kingdom)] [National Nuclear Laboratory, Chadwick House, Birchwood Park, Warrington, WA3 6AE (United Kingdom); Milestone, Neil [Industrial Research Ltd., 69 Gracefield Road, Lower Hutt, 5040 (New Zealand)] [Industrial Research Ltd., 69 Gracefield Road, Lower Hutt, 5040 (New Zealand)

2013-08-15T23:59:59.000Z

66

Comparison of modified sulfur cement and hydraulic cement for encapsulation of radioactive and mixed wastes  

SciTech Connect (OSTI)

The majority of solidification/stabilization systems for low-level radioactive waste (LLW) and mixed waste, both in the commercial sector and at Department of Energy (DOE) facilities, utilize hydraulic cement (such as portland cement) to encapsulate waste materials and yield a monolithic solid waste form for disposal. A new and innovative process utilizing modified sulfur cement developed by the US Bureau of Mines has been applied at Brookhaven National Laboratory (BNL) for the encapsulation of many of these problem'' wastes. Modified sulfur cement is a thermoplastic material, and as such, it can be heated above it's melting point (120{degree}C), combined with dry waste products to form a homogeneous mixture, and cooled to form a monolithic solid product. Under sponsorship of the DOE, research and development efforts at BNL have successfully applied the modified sulfur cement process for treatment of a range of LLWs including sodium sulfate salts, boric acid salts, and incinerator bottom ash and for mixed waste contaminated incinerator fly ash. Process development studies were conducted to determine optimal waste loadings for each waste type. Property evaluation studies were conducted to test waste form behavior under disposal conditions by applying relevant performance testing criteria established by the Nuclear Regulatory Commission (for LLW) and the Environmental Protection Agency (for hazardous wastes). Based on both processing and performance considerations, significantly greater waste loadings were achieved using modified sulfur cement when compared with hydraulic cement. Technology demonstration of the modified sulfur cement encapsulation system using production-scale equipment is scheduled for FY 1991. 12 refs., 8 figs., 3 tabs.

Kalb, P.D.; Heiser, J.H. III; Colombo, P.

1990-01-01T23:59:59.000Z

67

A THERMODYNAMICS STUDY ON THE UTILIZATION OF JORDANIAN OIL SHALE IN CEMENT INDUSTRY  

E-Print Network [OSTI]

Oil shale can be utilized in manufacturing the Portland cement. In addition to the utilization of the spent oil shale after combustion, it can also reduce the required temperature for the clinkering reactions. A study on the Jordanian oil shale was performed to maximize the use of oil shale in the

Awni Y. Al-otoom

68

Recycle of Wastes of Clay Brick Industry for Producing Eco-cement  

E-Print Network [OSTI]

mixes were designed from the WCB and ordinary Portland cement (OPC). After adding the required amount of water for each mix, the pastes were moulded in 5x5x5cm3 mould. The initial and final setting time were measured. The moulded specimens were cured...

Amin, A. M

2010-01-01T23:59:59.000Z

69

Imaging Wellbore Cement Degradation by Carbon Dioxide under Geologic Sequestration Conditions Using X?ray Computed Microtomography  

SciTech Connect (OSTI)

ABSTRACT: X-ray microtomography (XMT), a nondestructive three-dimensional imaging technique, was applied to demonstrate its capability to visualize the mineralogical alteration and microstructure changes in hydrated Portland cement exposed to carbon dioxide under geologic sequestration conditions. Steel coupons and basalt fragments were added to the cement paste in order to simulate cement-steel and cement-rock interfaces. XMT image analysis showed the changes of material density and porosity in the degradation front (density: 1.98 g/cm3, porosity: 40%) and the carbonated zone (density: 2.27 g/cm3, porosity: 23%) after reaction with CO2- saturated water for 5 months compared to unaltered cement (density: 2.15 g/cm3, porosity: 30%). Three-dimensional XMT imaging was capable of displaying spatially heterogeneous alteration in cement pores, calcium carbonate precipitation in cement cracks, and preferential cement alteration along the cement-steel and cement-rock interfaces. This result also indicates that the interface between cement and host rock or steel casing is likely more vulnerable to a CO2 attack than the cement matrix in a wellbore environment. It is shown here that XMT imaging can potentially provide a new insight into the physical and chemical degradation of wellbore cement by CO2 leakage.

Jung, Hun Bok; Jansik, Danielle P.; Um, Wooyong

2013-01-01T23:59:59.000Z

70

Spokane Seattle Portland Y  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSiteNeutron Scattering4 By I. Tudosa, H.Spokane Seattle Portland Y

71

Portland State University Shattuck Hall  

High Performance Buildings Database

Portland, OR Portland State's Shattuck hall was originally constructed as an elementary school in 1915. In 2007 the university undertook extensive renovations of the building to bring it up to current seismic requirements. In addition to structural improvements, the design team was able to upgraded the building's aging mechanical and electrical systems, upgrade plumbing, and restore the large light wells that bring daylight into the U-shaped building. The resulting building houses Portland State's Architecture department, where students are able to learn from the exposed building systems.

72

Hydration and leaching characteristics of cement pastes made from electroplating sludge  

SciTech Connect (OSTI)

The purpose of this study was to investigate the hydration and leaching characteristics of the pastes of belite-rich cements made from electroplating sludge. The compressive strength of the pastes cured for 1, 3, 7, 28, and 90 days was determined, and the condensation of silicate anions in hydrates was examined with the {sup 29}Si nuclear magnetic resonance (NMR) technology. The leachabilities of the electroplating sludge and the hardened pastes were studied with the multiple toxicity characteristic leaching procedure (MTCLP) and the tank leaching test (NEN 7345), respectively. The results showed that the electroplating sludge continued to leach heavy metals, including nickel, copper, and zinc, and posed a serious threat to the environment. The belite-rich cement made from the electroplating sludge was abundant in hydraulic {beta}-dicalcium silicate, and it performed well with regard to compressive-strength development when properly blended with ordinary Portland cements. The blended cement containing up to 40% the belite-rich cement can still satisfy the compressive-strength requirements of ASTM standards, and the pastes cured for 90 days had comparable compressive strength to an ordinary Portland cement paste. It was also found that the later hydration reaction of the blended cements was relatively more active, and high fractions of belite-rich cement increased the chain length of silicate hydrates. In addition, by converting the sludge into belite-rich cements, the heavy metals became stable in the hardened cement pastes. This study thus indicates a viable alternative approach to dealing with heavy metal bearing wastes, and the resulting products show good compressive strength and heavy-metal stability.

Chen, Ying-Liang [Department of Environmental Engineering, National Cheng Kung University, No. 1, University Rd., Tainan City 70101, Taiwan (China); Sustainable Environment Research Center, National Cheng Kung University, No. 1, University Rd., Tainan City 70101, Taiwan (China); Ko, Ming-Sheng [Institute of Mineral Resources Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chunghsiao E. Rd., Taipei City 10608, Taiwan (China); Lai, Yi-Chieh [Department of Bioenvironmental Engineering, Chung Yuan Christian University, No. 200, Chung-Pei Rd., Chung-Li 32023, Taiwan (China); Chang, Juu-En, E-mail: juuen@mail.ncku.edu.tw [Department of Environmental Engineering, National Cheng Kung University, No. 1, University Rd., Tainan City 70101, Taiwan (China); Sustainable Environment Research Center, National Cheng Kung University, No. 1, University Rd., Tainan City 70101, Taiwan (China)

2011-06-15T23:59:59.000Z

73

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES  

E-Print Network [OSTI]

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES DEPARTMENT OF CIVIL & ENVIRONMENTAL Transportation System Performance Report June, 2008 #12;2007 Portland Metropolitan Region Transportation System Performance Report Portland State University Center for Transportation Studies 2007 Table of Contents 12 29 36

Bertini, Robert L.

74

Problems in squeeze cementing  

SciTech Connect (OSTI)

For the past half century, work has been carried out to improve squeeze cementing. During the course of time, new techniques, equipment, cement and cement additives were introduced. Work is still underway to improve squeeze cementing. Basic concept of squeeze cementing, understanding the problems, planning for a squeeze job and then later testing of the job help in achieving the goal. Solutions were offered to some common problems, whereas many regional problems need time to time study and effort. Squeezing long perforations in highly permeable sand has always been a problem, for which some techniques were presented.

Toor, I.A.

1983-03-01T23:59:59.000Z

75

Experimental study of potential wellbore cement carbonation by various phases of carbon dioxide during geologic carbon sequestration  

SciTech Connect (OSTI)

Hydrated Portland cement was reacted with carbon dioxide (CO2) in supercritical, gaseous, and aqueous phases to understand the potential cement alteration processes along the length of a wellbore, extending from deep CO2 storage reservoir to the shallow subsurface during geologic carbon sequestration. The 3-D X-ray microtomography (XMT) images displayed that the cement alteration was significantly more extensive by CO2-saturated synthetic groundwater than dry or wet supercritical CO2 at high P (10 MPa)-T (50C) conditions. Scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) analysis also exhibited a systematic Ca depletion and C enrichment in cement matrix exposed to CO2-saturated groundwater. Integrated XMT, XRD, and SEM-EDS analyses identified the formation of extensive carbonated zone filled with CaCO3(s), as well as the porous degradation front and the outermost silica-rich zone in cement after exposure to CO2-saturated groundwater. The cement alteration by CO2-saturated groundwater for 2-8 months overall decreased the porosity from 31% to 22% and the permeability by an order of magnitude. Cement alteration by dry or wet supercritical CO2 was slow and minor compared to CO2-saturated groundwater. A thin single carbonation zone was formed in cement after exposure to wet supercritical CO2 for 8 months or dry supercritical CO2 for 15 months. Extensive calcite coating was formed on the outside surface of a cement sample after exposure to wet gaseous CO2 for 1-3 months. The chemical-physical characterization of hydrated Portland cement after exposure to various phases of carbon dioxide indicates that the extent of cement carbonation can be significantly heterogeneous depending on CO2 phase present in the wellbore environment. Both experimental and geochemical modeling results suggest that wellbore cement exposure to supercritical, gaseous, and aqueous phases of CO2 during geologic carbon sequestration is unlikely to damage the wellbore integrity because cement alteration by all phases of CO2 is dominated by carbonation reaction. This is consistent with previous field studies of wellbore cement with extensive carbonation after exposure to CO2 for 3 decades. However, XMT imaging indicates that preferential cement alteration by supercritical CO2 or CO2-saturated groundwater can occur along the cement-steel or cement-rock interfaces. This highlights the importance of further investigation of cement degradation along the interfaces of wellbore materials to ensure permanent geologic carbon storage.

Jung, Hun Bok; Um, Wooyong

2013-08-16T23:59:59.000Z

76

The use of scrap tires in rotary cement kilns  

SciTech Connect (OSTI)

The use of scrap tires as a supplemental fuel in the United States Portland cement industry has increased significantly in the past six years. In 1990, there were two kilns using tire-derived fuel (TDF), today 30 kilns use TDF. The outlook for continued and expanded use of TDF in the U.S. cement industry should be considered favorable, with 15 kilns conducting tests to determine TDF`s applicability or in the permitting process. The Council`s estimates are that by the end of 1996, the cement industry could be consuming some 75-100 million of the 253 million annually generated scrap tires in the United States. This level of TDF usage will make the cement industry the largest market segments for scrap tires in the United States. While the long-term outlook is at present positive, there are a series of factors that have, and will likely continue to adversely impact the near-term usage of TDF. These issues, as well as the factors that are likely to positively impact the cement kiln TDF market are the subject of this presentation.

Blumenthal, M. [Scrap Tire Management Council, Washington, DC (United States)

1996-12-31T23:59:59.000Z

77

Clean Energy Works Portland Pilot Process Evaluation | Department...  

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

Energy Works Portland Pilot Process Evaluation Clean Energy Works Portland Pilot Process Evaluation This is a document from Research Into Action Inc., posted to the website of the...

78

QER Public Meeting in Portland, OR: Electricity Transmission...  

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

Portland, OR: Electricity Transmission, Storage and Distribution - West QER Public Meeting in Portland, OR: Electricity Transmission, Storage and Distribution - West Meeting Date...

79

Better Buildings: Workforce: Spotlight on Portland, Oregon: Making...  

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

Spotlight on Portland, Oregon: Making the Program Work for Contractors Better Buildings: Workforce: Spotlight on Portland, Oregon: Making the Program Work for Contractors...

80

Alex Benson Cement Plants  

E-Print Network [OSTI]

with steel balls which grind mix into a fine powder -> Final Cement Product Associated Air Pollution: o From health effects Relative News; o "EPA Clamps down on Cement Plant Pollution" http.4 million dollars for violating the Clean Air Act and 2 million dollars for pollution controls #12

Toohey, Darin W.

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


81

Portland Company Weatherizes, Preserves Historic Home  

Broader source: Energy.gov [DOE]

Roy and Kim Fox, owners of a stunning Victorian home in Portland, Oregon, show local residents how to achieve energy efficiency in historic homes without sacrificing vintage character.

82

Effects of variations in rate of temperature rise, curing temperature and size of specimen on selected physical properties of concrete made with type III cement and steam cured at atmospheric pressure  

E-Print Network [OSTI]

made with Type III Portland cement, 2. to determine the interrelationships of the physical pro- perties of the steam cured concrete as exhibited by the variation in size of the test specimens, 3. to compare certain physical properties of steam cured... it was believed that Type III Portland cement would respond favorably, to temperatures 1n the higher ranges. Due to this same reasoning the rate of temperature rise was varied between 40 F, 60o F and 80 F per hour. These oombinations of curing temperature...

Aldridge, Weldon Wayne

1958-01-01T23:59:59.000Z

83

Leaching induced concentration profiles in the solid phase of cement  

SciTech Connect (OSTI)

Analysis of the solid phase of portland cement specimens by energy dispersive x-ray spectrometry before and after leaching provided elemental profiles within the cement. Releases of potassium were calculated from the solid phase profiles and were compared to releases determined from leachate analyses of potassium and cesium-137. The fraction of potassium released in the leachate was found to correlate closely to that of cesium-137 under varying time and temperature conditions, despite the different manner in which each was originally contained in the cement. Agreement was obtained among potassium releases as determined from the solid, potassium in the leachate and cesium-137 in the leachate. These correlations allowed the use of potassium as an analog for cesium-137 in cement. Profiles of potassium in the solid showed varying degrees of depletion. A specimen, sectioned immediately after leaching for 471 days, showed complete removal of potassium to 9 mm depth from the specimens surface. From 9 mm to the center of the specimen, an apparently linear increase in concentration was observed. Specimens that had been air dried prior to sectioning had profiles that were produced by evaporative transport of dissolved species toward the surface. Carbonation of the surface appears to have retarded migration of the dissolved material. This prevented it from reaching the outer edge and resulted in increased potassium concentrations several mm inside the surface. 9 refs., 10 figs., 2 tabs.

Fuhrmann, M.; Colombo, P.

1987-04-01T23:59:59.000Z

84

Characterization of modified calcium-silicate cements exposed to acidic environment  

SciTech Connect (OSTI)

Portland cement which is used as a binder in concrete in the construction industry has been developed into a biomaterial. It is marketed as mineral trioxide aggregate and is used in dentistry. This material has been reported to be very biocompatible and thus its use has diversified. The extended use of this material has led to developments of newer versions with improved physical properties. The aim of this study was to evaluate the effect of acidic environments found in the oral cavity on fast setting calcium silicate cements with improved physical properties using a combination of techniques. Two fast setting calcium silicate cements (CSA and CFA) and two cement composites (CSAG and CFAG) were assessed by subjecting the materials to lactic acid/sodium lactate buffer gel for a period of 28 days. At weekly intervals the materials were viewed under the tandem scanning confocal microscope (TSM), and scanning electron microscope (SEM). The two prototype cements exhibited changes in their internal chemistry with no changes in surface characteristics. Since the changes observed were mostly sub-surface evaluation of surface characteristics of cement may not be sufficient in the determination of chemical changes occurring. - Research Highlights: {yields} An acidic environment affects modified fast setting calcium silicate-based cements. {yields} No surface changes are observed in acidic environment. {yields} An acidic environment causes sub-surface changes in the material chemistry which are only visible in fractured specimens. {yields} A combination of techniques is necessary in order to evaluate the chemical changes occurring.

Camilleri, Josette, E-mail: josette.camilleri@um.edu.mt

2011-01-15T23:59:59.000Z

85

Production of cements from Illinois coal ash. Technical report, September 1, 1995--November 30, 1995  

SciTech Connect (OSTI)

The objective of this program is to convert Illinois coal combustion residues, such as fly ash, bottom ash, and boiler slag, into novel cementitious materials for use in the construction industry. Currently only about 30% of the 5 million tons of these coal combustion residues generated in Illinois each year are utilized, mainly as aggregate. These residues are composed largely Of SiO{sub 2}, Al{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}, MgO, and CaO, which are also the major components of cement. The process being developed in this program will use the residues directly in the manufacture of cement products. Therefore, a much larger amount of residues can be utilized. To achieve the above objective, in the first phase (current year) samples of coal combustion residues will be blended and mixed, as needed, with a lime or cement kiln dust (CKD) to adjust the CaO composition. Six mixtures will be melted in a laboratory-scale furnace at CTL. The resulting products will then be tested for cementitious properties. Two preliminary blends have been tested. One blend used fly ash with limestone, while the other used fly ash with CKD. Each blend was melted and then quenched, and the resulting product samples were ground to a specific surface area similar to portland cement. Cementitious properties of these product samples were evaluated by compression testing of 1-inch cube specimens. The specimens were formed out of cement paste where a certain percentage of the cement paste is displaced by one of the sample products. The specimens were cured for 24 hours at 55{degrees}C and 100% relative humidity. The specimens made with the product samples obtained 84 and 89% of the strength of a pure portland cement control cube. For comparison, similar (pozzolanic) materials in standard concrete practice are required to have a compressive strength of at least 75% of that of the control.

Wagner, J.C. [Institute of Gas Technology, Chicago, IL (United States); Bhatty, J.I.; Mishulovich, A. [Construction Technology Labs., Inc., Washington, DC (United States)

1995-12-31T23:59:59.000Z

86

Portland State University Performance Based Budget (PBB)  

E-Print Network [OSTI]

8/14/13 1 Portland State University Performance Based Budget (PBB) May 28, 2013 Preamble Portland State University currently manages its resources using an incremental budgeting process, which during method of higher education finance, incremental budgeting involves academic and non-academic units

Daescu, Dacian N.

87

Portland Public School Children Move with Propane  

SciTech Connect (OSTI)

This 2-page Clean Cities fact sheet describes the use of propane as a fuel source for Portland Public Schools' fleet of buses. It includes information on the history of the program, along with contact information for the local Clean Cities Coordinator and Portland Public Schools.

Not Available

2004-04-01T23:59:59.000Z

88

ULTRA-LIGHTWEIGHT CEMENT  

SciTech Connect (OSTI)

The objective of this project is to develop an improved ultra-lightweight cement using ultra-lightweight hollow glass spheres (ULHS). Work reported herein addresses tasks performed in the fourth quarter as well as the other three quarters of the past year. The subjects that were covered in previous reports and that are also discussed in this report include: Analysis of field laboratory data of active cement applications from three oil-well service companies; Preliminary findings from a literature review focusing on problems associated with ultra-lightweight cements; Summary of pertinent information from Russian ultra-lightweight cement literature review; and Comparison of compressive strengths of ULHS systems using ultrasonic and crush methods Results reported from the fourth quarter include laboratory testing of ULHS systems along with other lightweight cement systems--foamed and sodium silicate slurries. These comparison studies were completed for two different densities (10.0 and 11.5 lb/gal) and three different field application scenarios. Additional testing included the mechanical properties of ULHS systems and other lightweight systems. Studies were also performed to examine the effect that circulation by centrifugal pump during mixing has on breakage of ULHS.

Fred Sabins

2001-10-23T23:59:59.000Z

89

High temperature lightweight foamed cements  

DOE Patents [OSTI]

Cement slurries are disclosed which are suitable for use in geothermal wells since they can withstand high temperatures and high pressures. The formulation consists of cement, silica flour, water, a retarder, a foaming agent, a foam stabilizer, and a reinforcing agent. A process for producing these cements is also disclosed. 3 figs.

Sugama, Toshifumi.

1989-10-03T23:59:59.000Z

90

High temperature lightweight foamed cements  

DOE Patents [OSTI]

Cement slurries are disclosed which are suitable for use in geothermal wells since they can withstand high temperatures and high pressures. The formulation consists of cement, silica flour, water, a retarder, a foaming agent, a foam stabilizer, and a reinforcing agent. A process for producing these cements is also disclosed.

Sugama, Toshifumi (Mastic Beach, NY)

1989-01-01T23:59:59.000Z

91

Portland General Electric- Heat Pump Rebate Program  

Broader source: Energy.gov [DOE]

Portland General Electric's (PGE) Heat Pump Rebate Program offers residential customers a $200 rebate for an energy-efficient heat pump installed to PGEs standards by a PGE-approved contractor....

92

Brownfield reuse of dredged New York Harbor sediment by cement-based solidification/stabilization  

SciTech Connect (OSTI)

Newly effective federal regulations restrict the ocean disposal of sediments dredged from the harbors of New York and Newark. The New York Port Authority is faced with a critical situation: find land-based disposal/uses for 10`s of millions cubic yards of sediments or lose standing as a commercial port for ocean-going ships. One of the technologies now being employed to manage the sediments is portland cement-based solidification/stabilization (S/S) treatment. At least 4 million cubic yards of the sediments will undergo cement-based S/S treatment. This treatment will immobilize heavy metals, dioxin, PCBs and other organic contaminants in the sediment. The treatment changes the sediment from a environmental liability into a valuable structural fill. This structural fill is being used at two properties. The first property is an old municipal landfill in Port Newark, New Jersey. The treated sediments are being used as structural fill to cover about 20 acres of the landfill. This will allow planned redevelopment of the landfill property into a shopping mall. The second property called the Seaboard site, was the location of a coal gasification facility and later a wood preservation facility. This 160-acre property has been designated for brownfield redevelopment. Over 4 million cubic yards of treated sediments will eventually cover this site. Portland cement is the selected S/S binding reagent. Nearly 500,000 tons of cement will eventually be used to treat the sediments. Cement was selected for its ability to (a) change the peanut butter-like consistency of the sediments into a structural material and (b) to physically and chemically immobilize hazardous constituents in the sediment.

Loest, K. [ECDC Environmental L.C., Pembroke, MA (United States). Eastern Operations; Wilk, C.M. [Portland Cement Association, Skokie, IL (United States)

1998-12-31T23:59:59.000Z

93

Portland Advancing Green Image With Solar Installs | Department...  

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

Portland Advancing Green Image With Solar Installs Portland Advancing Green Image With Solar Installs February 22, 2010 - 12:10pm Addthis Laura Smoyer checks the net-metering...

94

Cement substitution by a combination of metakaolin and limestone  

SciTech Connect (OSTI)

This study investigates the coupled substitution of metakaolin and limestone in Portland cement (PC). The mechanical properties were studied in mortars and the microstructural development in pastes by X-ray diffraction, thermogravimetry analysis, mercury intrusion porosimetry and isothermal calorimetry. We show that 45% of substitution by 30% of metakaolin and 15% of limestone gives better mechanical properties at 7 and 28 days than the 100% PC reference. Our results show that calcium carbonate reacts with alumina from the metakaolin, forming supplementary AFm phases and stabilizing ettringite. Using simple mass balance calculations derived from thermogravimetry results, we also present the thermodynamic simulation for the system, which agrees fairly well with the experimental observations. It is shown that gypsum addition should be carefully balanced when using calcined clays because it considerably influences the early age strength by controlling the very rapid reaction of aluminates.

Antoni, M., E-mail: mathieu.antoni@epfl.ch [EPFL-STI-IMX-Laboratoires des Materiaux de Construction, Station12, CH-1015 Lausanne (Switzerland); Rossen, J. [EPFL-STI-IMX-Laboratoires des Materiaux de Construction, Station12, CH-1015 Lausanne (Switzerland)] [EPFL-STI-IMX-Laboratoires des Materiaux de Construction, Station12, CH-1015 Lausanne (Switzerland); Martirena, F. [CIDEM-UCLV, Universidad Las Villas, Santa Clara (Cuba)] [CIDEM-UCLV, Universidad Las Villas, Santa Clara (Cuba); Scrivener, K. [EPFL-STI-IMX-Laboratoires des Materiaux de Construction, Station12, CH-1015 Lausanne (Switzerland)] [EPFL-STI-IMX-Laboratoires des Materiaux de Construction, Station12, CH-1015 Lausanne (Switzerland)

2012-12-15T23:59:59.000Z

95

Federal Utility Partnership Working Group: Welcome to Portland  

Broader source: Energy.gov [DOE]

Presentation covers welcoming attendees to Portland at the Spring 2011 Federal Utility Partnership Working Group (FUPWG) meeting.

96

BLENDED CALCIUM ALUMINATE-CALCIUM SULFATE CEMENT-BASED GROUT FOR P-REACTOR VESSEL IN-SITU DECOMMISSIONING  

SciTech Connect (OSTI)

The objective of this report is to document laboratory testing of blended calcium aluminate - calcium hemihydrate grouts for P-Reactor vessel in-situ decommissioning. Blended calcium aluminate - calcium hemihydrate cement-based grout was identified as candidate material for filling (physically stabilizing) the 105-P Reactor vessel (RV) because it is less alkaline than portland cement-based grout which has a pH greater than 12.4. In addition, blended calcium aluminate - calcium hemihydrate cement compositions can be formulated such that the primary cementitious phase is a stable crystalline material. A less alkaline material (pH {<=} 10.5) was desired to address a potential materials compatibility issue caused by corrosion of aluminum metal in highly alkaline environments such as that encountered in portland cement grouts [Wiersma, 2009a and b, Wiersma, 2010, and Serrato and Langton, 2010]. Information concerning access points into the P-Reactor vessel and amount of aluminum metal in the vessel is provided elsewhere [Griffin, 2010, Stefanko, 2009 and Wiersma, 2009 and 2010, Bobbitt, 2010, respectively]. Radiolysis calculations are also provided in a separate document [Reyes-Jimenez, 2010].

Langton, C.; Stefanko, D.

2011-03-10T23:59:59.000Z

97

Thermal Shock-resistant Cement  

SciTech Connect (OSTI)

We studied the effectiveness of sodium silicate-activated Class F fly ash in improving the thermal shock resistance and in extending the onset of hydration of Secar #80 refractory cement. When the dry mix cement, consisting of Secar #80, Class F fly ash, and sodium silicate, came in contact with water, NaOH derived from the dissolution of sodium silicate preferentially reacted with Class F fly ash, rather than the #80, to dissociate silicate anions from Class F fly ash. Then, these dissociated silicate ions delayed significantly the hydration of #80 possessing a rapid setting behavior. We undertook a multiple heating -water cooling quenching-cycle test to evaluate the cements resistance to thermal shock. In one cycle, we heated the 200 and #61616;C-autoclaved cement at 500 and #61616;C for 24 hours, and then the heated cement was rapidly immersed in water at 25 and #61616;C. This cycle was repeated five times. The phase composition of the autoclaved #80/Class F fly ash blend cements comprised four crystalline hydration products, boehmite, katoite, hydrogrossular, and hydroxysodalite, responsible for strengthening cement. After a test of 5-cycle heat-water quenching, we observed three crystalline phase-transformations in this autoclaved cement: boehmite and #61614; and #61543;-Al2O3, katoite and #61614; calcite, and hydroxysodalite and #61614; carbonated sodalite. Among those, the hydroxysodalite and #61614; carbonated sodalite transformation not only played a pivotal role in densifying the cementitious structure and in sustaining the original compressive strength developed after autoclaving, but also offered an improved resistance of the #80 cement to thermal shock. In contrast, autoclaved Class G well cement with and without Class F fly ash and quartz flour failed this cycle test, generating multiple cracks in the cement. The major reason for such impairment was the hydration of lime derived from the dehydroxylation of portlandite formed in the autoclaved cement, causing its volume to expand.

Sugama T.; Pyatina, T.; Gill, S.

2012-02-01T23:59:59.000Z

98

Alkali-aggregate reaction in concrete containing high-alkali cement and granite aggregate  

SciTech Connect (OSTI)

The paper discusses results of the research into the influence of high-alkali Portland cement on granite aggregate. The deformation of the concrete structure occurred after 18 months. The research was carried out by means of a scanning electron microscope equipped with a high-energy dispersive X-ray analyzer that allowed observation of unpolished sections of concrete bars exhibiting the cracking pattern typical of the alkali-silica reaction. Both the microscopic observation and the X-ray elemental analysis confirm the presence of alkali-silica gel and secondary ettringite in the cracks.

Owsiak, Z

2004-01-01T23:59:59.000Z

99

Evaluation of cement production using a pressurized fluidized-bed combustor  

SciTech Connect (OSTI)

There are several primary conclusions which can be reached and used to define research required in establishing the feasibility of using PFBC-derived materials as cement feedstock. 1. With appropriate blending almost any material containing the required cement-making materials can be utilized to manufacture cement. However, extensive blending with multiple materials or the use of ash in relatively small quantities would compromise the worth of this concept. 2. The composition of a potential feedstock must be considered not only with respect to the presence of required materials, but just as significantly, with respect to the presence and concentration of known deleterious materials. 3. The processing costs for rendering the feedstock into an acceptable composition and the energy costs associated with both processing and burning must be considered. It should be noted that the cost of energy to produce cement, expressed as a percentage of the price of the product is higher than for any other major industrial product. Energy consumption is, therefore, a major issue. 4. The need for conformance to environmental regulations has a profound effect on the cement industry since waste materials can neither be discharged to the atmosphere or be shipped to a landfill. 5. Fifth, the need for achieving uniformity in the composition of the cement is critical to controlling its quality. Unfortunately, certain materials in very small concentrations have the capability to affect the rate and extent to which the cementitious compound in portland cement are able to form. Particularly critical are variations in the ash, the sulfur content of the coal or the amount and composition of the stack dust returned to the kiln.

DeLallo, M.; Eshbach, R.

1994-01-01T23:59:59.000Z

100

THE BULL RUN RIVER-RESERVOIR SYSTEM MODEL Robert L. Annear, Research Assistant, Civil and Environmental Engineering, Portland  

E-Print Network [OSTI]

to meet water demand and fish habitat requirements. Management strategies evaluated included adding and Environmental Engineering, Portland State University, Portland, Oregon. Scott A. Wells, Professor of Civil and Environmental Engineering, Portland State University, Portland, Oregon. Department of Civil and Environmental

Wells, Scott A.

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


101

A literature review of mixed waste components: Sensitivities and effects upon solidification/stabilization in cement-based matrices  

SciTech Connect (OSTI)

The US DOE Oak Ridge Field Office has signed a Federal Facility Compliance Agreement (FFCA) regarding Oak Ridge Reservation (ORR) mixed wastes subject to the land disposal restriction (LDR) provisions of the Resource conservation and Recovery Act. The LDR FFCA establishes an aggressive schedule for conducting treatability studies and developing treatment methods for those ORR mixed (radioactive and hazardous) wastes listed in Appendix B to the Agreement. A development, demonstration, testing, and evaluation program has been initiated to provide those efforts necessary to identify treatment methods for all of the wastes that meet Appendix B criteria. The program has assembled project teams to address treatment development needs in a variety of areas, including that of final waste forms (i.e., stabilization/solidification processes). A literature research has been performed, with the objective of determining waste characterization needs to support cement-based waste-form development. The goal was to determine which waste species are problematic in terms of consistent production of an acceptable cement-based waste form and at what concentrations these species become intolerable. The report discusses the following: hydration mechanisms of Portland cement; mechanisms of retardation and acceleration of cement set-factors affecting the durability of waste forms; regulatory limits as they apply to mixed wastes; review of inorganic species that interfere with the development of cement-based waste forms; review of radioactive species that can be immobilized in cement-based waste forms; and review of organic species that may interfere with various waste-form properties.

Mattus, C.H.; Gilliam, T.M.

1994-03-01T23:59:59.000Z

102

Energy efficiency and carbon dioxide emissions reduction opportunities in the U.S. cement industry  

SciTech Connect (OSTI)

This paper reports on an in-depth analysis of the U.S. cement industry, identifying cost-effective energy efficiency measures and potentials. The authors assess this industry at the aggregate level (Standard Industrial Classification 324), which includes establishments engaged in manufacturing hydraulic cements, including Portland, natural, masonry, and pozzolana when reviewing industry trends and when making international comparisons. Coal and coke are currently the primary fuels for the sector, supplanting the dominance of natural gas in the 1970s. Between 1970 and 1997, primary physical energy intensity for cement production (SIC 324) dropped 30%,from 7.9 GJ/t to 5.6 GJ/t, while carbon dioxide intensity due to fuel consumption (carbon dioxide emissions expressed in tons of carbon per ton cement) dropped 25%, from 0.16 tC/ton to 0.12 tC/ton. Carbon dioxide intensity due to fuel consumption and clinker calcination dropped 17%, from 0.29 tC/ton to 0.24 tC/ton. They examined 30 energy efficient technologies and measures and estimated energy savings, carbon dioxide savings, investment costs, and operation and maintenance costs for each of the measures. They constructed an energy conservation supply curve for U.S. cement industry which found a total cost-effective reduction of 0.6 GJ/ton of cement consisting of measures having a simple payback period of 3 years or less. This is equivalent to potential energy savings of 11% of 1994 energy use for cement making and a savings of 5% of total 1994 carbon dioxide emissions by the U.S. cement industry. Assuming the increased production of blended cement in the U.S., as is common in many parts of the world, the technical potential for energy efficiency improvement would not change considerably. However, the cost-effective potential, would increase to 1.1 GJ/ton cement or 18% of total energy use, and carbon dioxide emissions would be reduced by 16%.

Martin, Nathan; Worrell, Ernst; Price, Lynn

1999-08-01T23:59:59.000Z

103

Development of a performance-based industrial energy efficiency indicator for cement manufacturing plants.  

SciTech Connect (OSTI)

Organizations that implement strategic energy management programs have the potential to achieve sustained energy savings if the programs are carried out properly. A key opportunity for achieving energy savings that plant managers can take is to determine an appropriate level of energy performance by comparing the plant performance with that of similar plants in the same industry. Manufacturing plants can set energy efficiency targets by using performance-based indicators. The U.S. Environmental Protection Agency (EPA), through its ENERGY STAR{reg_sign} program, has been developing plant energy performance indicators (EPIs) to encourage a variety of U.S. industries to use energy more efficiently. This report describes work with the cement manufacturing industry to provide a plant-level indicator of energy efficiency for assembly plants that produce a variety of products, including Portland cement and other specialty cement products, in the United States. Consideration is given to the role that performance-based indicators play in motivating change; the steps needed to develop indicators, including interacting with an industry to secure adequate data for an indicator; and the actual application and use of an indicator when complete. How indicators are employed in the EPA's efforts to encourage industries to voluntarily improve their use of energy is discussed as well. The report describes the data and statistical methods used to construct the EPI for cement manufacturing plants. Individual equations are presented, as are the instructions for using them in an associated Excel spreadsheet.

Boyd, G.; Decision and Information Sciences

2006-07-21T23:59:59.000Z

104

The interfacial chemistry of solidification/stabilization of metals in cement and pozzolanic material systems  

SciTech Connect (OSTI)

The chemistry of cement, its hydration and mechanisms of solidification/stabilization (s/s) of toxic metals by cement-based systems and pozzolanic materials are significantly controlled by surface, near-surface and interfacial phenomena. The adsorption conditions and the selectivity strong affinity of hazardous metals towards clay minerals, certain hydrated metal oxides and oxyhydroxides, and cementitous substances also play an important role in the s/s process for the immobilization of contaminants. Recent works from the authors` laboratory involving metal ions and superplasticizers have elucidated the mechanisms of reactions leading to the retardation of cement hydration and subsequent setting and their interactions with silicate-based systems. This article delineates the current status of interfacial chemistry at the solid-liquid boundary and places it in perspective with present and future s/s processes based on Portland cement and pozzolanic materials. The importance of surface charge, the role of interfacial phenomena on adsorption, and the importance of calcium and other types of anions and cations in s/s are also discussed. A surface charge control reaction model that accounts for the importance of calcium and other cations and anions is outlined and used to discuss the chemical nature and microstructure of the interfacial transition zone.

Yousuf, M.; Mollah, A.; Vempati, R.K.; Lin, T.C.; Cocke, D.L. [Lamar Univ., Beaumont, TX (United States)] [Lamar Univ., Beaumont, TX (United States)

1995-11-01T23:59:59.000Z

105

Application to Export Electric Energy OE Docket No. EA-97-D Portland...  

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

97-D Portland General Electric Company Application to Export Electric Energy OE Docket No. EA-97-D Portland General Electric Company Application from PGE to export electric energy...

106

Institute of Transportation Studies Portland State University  

E-Print Network [OSTI]

Institute of Transportation Studies Portland State University November 2007 Transit's Dirty Little Director, UCLA Institute of Transportation Studies #12;Institute of Transportation Studies Transit of Transportation Studies Fewer than 40 trips per capita since 1965 Trend in Transit Ridership Per Capita 1900

Bertini, Robert L.

107

Portland, Oregon: Solar in Action (Brochure)  

SciTech Connect (OSTI)

This brochure provides an overview of the challenges and successes of Portland, OR, a 2007 Solar America City awardee, on the path toward becoming a solar-powered community. Accomplishments, case studies, key lessons learned, and local resource information are given.

Not Available

2011-10-01T23:59:59.000Z

108

Full-scale tests of sulfur polymer cement and non-radioactive waste in heated and unheated prototypical containers  

SciTech Connect (OSTI)

Sulfur polymer cement has been demonstrated to be superior to portland cement in the stabilization of numerous troublesome low- level radioactive wastes, notably mixed waste fly ash, which contains heavy metals. EG G Idaho, Inc. conducted full-scale, waste-stabilization tests with a mixture of sulfur polymer cement and nonradioactive incinerator ash poured over simulated steel and ash wastes. The container used to contain the simulated waste for the pour was a thin-walled, rectangular, steel container with no appendages. The variable in the tests was that one container and its contents were at 65{degree}F (18{degree}C) at the beginning of the pour, while the other was preheated to 275{degree}F (135{degree}C) and was insulated before the pour. The primary goal was to determine the procedures and equipment deemed operationally acceptable and capable of providing the best probability of passing the only remaining governmental test for sulfur polymer cement, the Nuclear Regulatory Commission's full-scale test. The secondary goal was to analyze the ability of the molten cement and ash mixture to fill different size pipes and thus eliminate voids in the resultant 24 ft{sup 3} monolith.

Darnell, G.R.; Aldrich, W.C.; Logan, J.A.

1992-02-01T23:59:59.000Z

109

Full-scale tests of sulfur polymer cement and non-radioactive waste in heated and unheated prototypical containers  

SciTech Connect (OSTI)

Sulfur polymer cement has been demonstrated to be superior to portland cement in the stabilization of numerous troublesome low- level radioactive wastes, notably mixed waste fly ash, which contains heavy metals. EG&G Idaho, Inc. conducted full-scale, waste-stabilization tests with a mixture of sulfur polymer cement and nonradioactive incinerator ash poured over simulated steel and ash wastes. The container used to contain the simulated waste for the pour was a thin-walled, rectangular, steel container with no appendages. The variable in the tests was that one container and its contents were at 65{degree}F (18{degree}C) at the beginning of the pour, while the other was preheated to 275{degree}F (135{degree}C) and was insulated before the pour. The primary goal was to determine the procedures and equipment deemed operationally acceptable and capable of providing the best probability of passing the only remaining governmental test for sulfur polymer cement, the Nuclear Regulatory Commission`s full-scale test. The secondary goal was to analyze the ability of the molten cement and ash mixture to fill different size pipes and thus eliminate voids in the resultant 24 ft{sup 3} monolith.

Darnell, G.R.; Aldrich, W.C.; Logan, J.A.

1992-02-01T23:59:59.000Z

110

Portland State University Personal/Professional Service Contract (PSC)  

E-Print Network [OSTI]

Portland State University Personal/Professional Service Contract (PSC) INSTRUCTIONS IF ANY REQUIRED A University's Personal Services Contract Terms and Conditions: This must be given to Contractor before

Caughman, John

111

City of Portland- Streamlined Building Permits for Residential Solar Systems  

Broader source: Energy.gov [DOE]

The City of Portland's Bureau of Development Services (BDS) developed an electronic permitting process for residential solar energy system installations. With this streamlined, expedited process,...

112

Portland, Oregon: Solar in Action (Brochure), Solar America Cities...  

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

protection. The following policies and programs are the foundation for Portland's work on solar energy market transformation: * 1993 Carbon Dioxide Reduction Strategy * 1993...

113

Increasing Energy Efficiency and Reducing Emissions from China's Cement Kilns: Audit Report of Two Cement Plants in Shandong Province, China  

E-Print Network [OSTI]

and a vertical shaft kiln at another cement manufacturingrotary kiln or vertical shaft kiln in a cement plant. Baseda vertical shaft kiln (VSK) at another cement manufacturing

Price, Lynn

2013-01-01T23:59:59.000Z

114

Guidebook for Using the Tool BEST Cement: Benchmarking and Energy Savings Tool for the Cement Industry  

E-Print Network [OSTI]

the small cement plants, earthen vertical kiln (and hollowcement plant in North China utilizing vertical shaft kilnsCement Industry Technical Conference: 75- Replacing Vertical Shaft Kilns

Galitsky, Christina

2009-01-01T23:59:59.000Z

115

Portland State University Career Center EDUCATION SECTION SAMPLES  

E-Print Network [OSTI]

passive solar panels for heating system. · Worked with an 8-member team to design a cooling system.46 Projects: · Conducted research and feasibility study on current lens manufacturing process. · Designed Portland State University, Portland, Oregon · Currently taking postbaccalaureate courses in Graphic Design

Lafferriere, Gerardo

116

Portland State University Confidentiality and Information Management Policy and Procedures  

E-Print Network [OSTI]

Portland State University Confidentiality and Information Management Policy and Procedures I:\\Staff\\DEV\\Office\\KATRINA\\WEB\\Policies Page\\Info Mgmt Policy & Procedures.doc 8/15/2008 PORTLAND STATE UNIVERSITY CONFIDENTIALITY and INFORMATION MANAGEMENT POLICY and PROCEDURES Confidentiality and Information Management Policy Information

Bertini, Robert L.

117

Columbia College Portland State University Updated 1/31/2014  

E-Print Network [OSTI]

Columbia College Portland State University Updated 1/31/2014 Transfer Worksheet If you are taking classes that are part of the Intersegmental General Education Transfer Curriculum (IGETC) at Columbia College, you can rest assured that those credits will also transfer to Portland State University (PSU

Caughman, John

118

II  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou$0.C. 20545*. . : '* FEB1f\lMUC4cb90,fioml7aa AMY yII

119

II  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou$0.C. 20545*. . : '* FEB1f\lMUC4cb90,fioml7aa AMY yII

120

E-Print Network 3.0 - anhydrous portland cements Sample Search...  

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

Collection: Mathematics 32 Use of fly ash as an admixture for electromagnetic interference shielding Jingyao Cao, D.D.L. Chung* Summary: times smaller than those of...

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


121

Effect of carbonation on the hydro-mechanical properties of Portland cements  

E-Print Network [OSTI]

Becquerel, BP 202, F-92142 Clamart, France grimmele@clamart.oilfield.slb.com, vbarlet@clamart.oilfield

Paris-Sud XI, Universit de

122

[ ]April 2013 Thickness is currently a pay item for portland cement concrete (PCC) pavements  

E-Print Network [OSTI]

, such as the nuclear density gauge for HMA roadway density or compression testing of cast cylinders for PCC roadway frequency at earlier ages. The research results can be easily implemented on PCC and HMA paving projects. 13

Harms, Kyle E.

123

Westinghouse Cementation Facility of Solid Waste Treatment System - 13503  

SciTech Connect (OSTI)

During NPP operation, several waste streams are generated, caused by different technical and physical processes. Besides others, liquid waste represents one of the major types of waste. Depending on national regulation for storage and disposal of radioactive waste, solidification can be one specific requirement. To accommodate the global request for waste treatment systems Westinghouse developed several specific treatment processes for the different types of waste. In the period of 2006 to 2008 Westinghouse awarded several contracts for the design and delivery of waste treatment systems related to the latest CPR-1000 nuclear power plants. One of these contracts contains the delivery of four Cementation Facilities for waste treatment, s.c. 'Follow on Cementations' dedicated to three locations, HongYanHe, NingDe and YangJiang, of new CPR-1000 nuclear power stations in the People's Republic of China. Previously, Westinghouse delivered a similar cementation facility to the CPR-1000 plant LingAo II, in Daya Bay, PR China. This plant already passed the hot functioning tests successfully in June 2012 and is now ready and released for regular operation. The 'Follow on plants' are designed to package three 'typical' kind of radioactive waste: evaporator concentrates, spent resins and filter cartridges. The purpose of this paper is to provide an overview on the Westinghouse experience to design and execution of cementation facilities. (authors)

Jacobs, Torsten; Aign, Joerg [Westinghouse Electric Germany GmbH, Global Waste Management, Tarpenring 6, D- 22419 Hamburg (Germany)] [Westinghouse Electric Germany GmbH, Global Waste Management, Tarpenring 6, D- 22419 Hamburg (Germany)

2013-07-01T23:59:59.000Z

124

MECHANICAL ENGINEERING at PORTLAND STATE UNIVERSITYMECHANICAL ENGINEERING at PORTLAND STATE UNIVERSITY The Mechanical and Materials Engineering Department at Portland State University offers a Bachelor of Science in Mechanical Engineering (BSME).  

E-Print Network [OSTI]

Student Services Office: 503.725.4631; advisor@cecs.pdx.edu) Page 1 #12;TransfertoPSU:MaseehCollegeofEngineeringMECHANICAL ENGINEERING at PORTLAND STATE UNIVERSITYMECHANICAL ENGINEERING at PORTLAND STATE UNIVERSITY The Mechanical and Materials Engineering Department at Portland State University offers a Bachelor

Bertini, Robert L.

125

Cement advanced furnace and process  

SciTech Connect (OSTI)

This patent describes a suspension shaft furnace for producing discrete cement clinkers from discrete pellets of cement-forming batch materials which are gravity-migrated therethrough. It comprises a vertical furnace housing enclosing a top pellet-feeding and preheating zone comprising an elongate vertical shaft section opening into an intermediate fluidized bed section comprising fuel inlet conduits, an air-permeable clinker-impermeable support; a lower clinker-cooling section beneath the fluidized bed section; clinker-discharge means communicating between the fluidized bed section and the cooling section and air inlet means.

Litka, A.F.; Cohen, S.M.

1992-06-02T23:59:59.000Z

126

ADVANCED CEMENTS FOR GEOTHERMAL WELLS  

SciTech Connect (OSTI)

Using the conventional well cements consisting of the calcium silicate hydrates (CaO-SiO{sub 2}-H{sub 2}O system) and calcium aluminum silicate hydrates (CaO-Al{sub 2}O{sub 3}-SiO{sub 2}-H{sub 2}O system) for the integrity of geothermal wells, the serious concern confronting the cementing industries was their poor performance in mechanically supporting the metallic well casing pipes and in mitigating the pipe's corrosion in very harsh geothermal reservoirs. These difficulties are particularly acute in two geological regions: One is the deep hot downhole area ({approx} 1700 m depth at temperatures of {approx} 320 C) that contains hyper saline water with high concentrations of CO{sub 2} (> 40,000 ppm) in conjunction with {approx} 100 ppm H{sub 2}S at a mild acid of pH {approx} 5.0; the other is the upper well region between the well's surface and {approx} 1000 m depth at temperatures up to 200 C. The specific environment of the latter region is characterized by highly concentrated H{sub 2}SO{sub 4} (pH < 1.5) brine containing at least 5000 ppm CO{sub 2}. When these conventional cements are emplaced in these harsh environments, their major shortcoming is their susceptibility to reactions with hot CO{sub 2} and H{sub 2}SO4, thereby causing their deterioration brought about by CO{sub 2}-catalyzed carbonation and acid-initiated erosion. Such degradation not only reduced rapidly the strength of cements, lowering the mechanical support of casing pipes, but also increased the extent of permeability of the brine through the cement layer, promoting the rate of the pipe's corrosion. Severely carbonated and acid eroded cements often impaired the integrity of a well in less than one year; in the worst cases, casings have collapsed within three months, leading to the need for costly and time-consuming repairs or redrilling operations. These were the reasons why the geothermal well drilling and cementing industries were concerned about using conventional well cements, and further their deterioration was a major impediment in expediting the development of geothermal energy resources.

SUGAMA,T.

2007-01-01T23:59:59.000Z

127

Characterization using thermomechanical and differential thermal analysis of the sinterization of Portland clinker doped with CaF{sub 2}  

SciTech Connect (OSTI)

In this work, the sintering process of Portland cement was studied by combining thermomechanical analysis (TMA) and differential thermal analysis (DTA), together with X-ray diffraction (XRD) and scanning electron microscopy (SEM). Thermal analysis results employing both techniques indicted that phase transformations appeared at lower temperatures when CaF{sub 2} was incorporated in the raw materials. Besides, it was observed at high temperature that in some phase transformations TMA conducts to better resolution compared with the DTA measurements. Furthermore, mechanical properties and X-ray diffraction patterns corroborate the TMA and DTA results, corroborating that the final amount of alite (Ca{sub 3}SiO{sub 5}) is higher when a certain amount of CaF{sub 2} was present during the clinkerization process.

Dominguez, O., E-mail: nanoquimica@yahoo.com [Fac. de Quimica-UASLP, Av. Dr. Salvador Nava 6, CP 78210, San Luis Potosi, SLP (Mexico); Torres-Castillo, A. [Fac. de Quimica-UASLP, Av. Dr. Salvador Nava 6, CP 78210, San Luis Potosi, SLP (Mexico); Flores-Velez, L.M. [Instituto de Metalurgia-UASLP, Sierra Leona 550, CP 78210, San Luis Potosi, SLP (Mexico); Torres, R. [Mexichem Fluor S.A., Eje 106 s/n CP 78395, San Luis Potosi, SLP (Mexico)

2010-04-15T23:59:59.000Z

128

Cement design key to subsalt success  

SciTech Connect (OSTI)

Failures in casing set across salt formations have cost the petroleum industry billions of dollars. One of the most effective weapons for halting casing damage in salt formations is a competent cement sheath across the whole salt zone formation. Good cement jobs are at least as important as casing design. Choice of cementing recipe and practice can ensure a lasting cementation and is a function of the formation, its inclusions and its boundaries. The paper discusses the gauge hole, salt creep, and well casing and cementing.

NONE

1996-07-01T23:59:59.000Z

129

High temperature synthetic cement retarder  

SciTech Connect (OSTI)

A synthetic cement retarder which provides excellent retardation and compressive strength development has been synthesized. The response properties and temperature ranges of the synthetic retarder far exceed those of commonly used retarders such as lignosulfonates. The chemical nature of the new retarder is discussed and compared to another synthetic retarder.

Eoff, L.S.; Buster, D.

1995-11-01T23:59:59.000Z

130

Process for cementing geothermal wells  

DOE Patents [OSTI]

A pumpable slurry of coal-filled furfuryl alcohol, furfural, and/or a low molecular weight mono- or copolymer thereof containing, preferably, a catalytic amount of a soluble acid catalyst is used to cement a casing in a geothermal well.

Eilers, Louis H. (Inola, OK)

1985-01-01T23:59:59.000Z

131

Magnetic resonance studies of cement based materials in inhomogeneous magnetic fields  

SciTech Connect (OSTI)

Single-sided magnets give hope that Nuclear Magnetic Resonance (NMR) might in future be used for in situ characterisation of hydration and water transport in the surface layers of concrete slabs. Towards that end, a portable NMR-MOUSE (MObile Universal Surface Explorer) has been used to follow the hydration of gypsum based plaster, a Portland cement paste and concrete mortar. The results compare favourably to those obtained using a standard laboratory bench-top spectrometer. Further, stray field imaging (STRAFI) based methods have been used with embedded NMR detector coils to study water transport across a mortar/topping interface. The measured signal amplitudes are found to correlate with varying sample conditions.

Boguszynska, Joanna [Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, Poznan (Poland); Brown, Marc C.A. [School of Physical Sciences, University of Kent, Canterbury, Kent, CT2 7NR (United Kingdom); McDonald, Peter J. [School of Electronics and Physical Sciences, University of Surrey, Surrey, GU2 7XH (United Kingdom)]. E-mail: p.mcdonald@surrey.ac.uk; Mitchell, Jonathan [School of Electronics and Physical Sciences, University of Surrey, Surrey, GU2 7XH (United Kingdom); Mulheron, Mike [School of Engineering, University of Surrey, Surrey, GU2 7XH (United Kingdom); Tritt-Goc, Jadwiga [Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, Poznan (Poland); Verganelakis, Dimitris A. [Department of Chemical Engineering, University of Cambridge, Cambridge, CB2 3RA (United Kingdom)

2005-10-01T23:59:59.000Z

132

PORTLAND STATE UNIVERSITY DEPARTMENT OF CIVIL & ENVIRONMENTAL ENGINEERING  

E-Print Network [OSTI]

PORTLAND STATE UNIVERSITY DEPARTMENT OF CIVIL & ENVIRONMENTAL ENGINEERING CENTER FOR TRANSPORTATION............................................................................................................ 7 3.1 Site Selection..................................................................................................................... 7 3.1.1 Site 1: Southbound I-5 at North Marine Drive

Bertini, Robert L.

133

City of Portland- Green Building Policy and LEED Certification  

Broader source: Energy.gov [DOE]

In 2001, the City of Portland adopted a Green Building Policy requiring new construction and major renovations of all city facilities to meet the Certified level of LEED. This policy was amended on...

134

CONSTRUCTION-GRADE CEMENT PRODUCTION FROM CONTAMINATED SEDIMENTS USING  

E-Print Network [OSTI]

1 CONSTRUCTION-GRADE CEMENT PRODUCTION FROM CONTAMINATED SEDIMENTS USING CEMENT-LOCKTM TECHNOLOGY A manufacturing technology for producing construction-grade cements from a wide variety of contaminated waste cementitious properties that allow it to be transformed into construction-grade cement. The Cement

Brookhaven National Laboratory

135

Early containment of high-alkaline solution simulating low-level radioactive waste stream in clay-bearing blended cement  

SciTech Connect (OSTI)

Portland cement blended with fly ash and attapulgite clay was mixed with high-alkaline solution simulating low-level radioactive waste stream at a one-to-one weight ratio. Mixtures were adiabatically and isothermally cured at various temperatures and analyzed for phase composition, total alkalinity, pore solution chemistry, and transport properties as measured by impedance spectroscopy. Total alkalinity is characterized by two main drops. The early one corresponds to a rapid removal of phosphorous, aluminum, sodium, and to a lesser extent potassium solution. The second drop from about 10 h to 3 days is mainly associated with the removal of aluminum, silicon, and sodium. Thereafter, the total alkalinity continues descending, but at a lower rate. All pastes display a rapid flow loss that is attributed to an early precipitation of hydrated products. Hemicarbonate appears as early as one hour after mixing and is probably followed by apatite precipitation. However, the former is unstable and decomposes at a rate that is inversely related to the curing temperature. At high temperatures, zeolite appears at about 10 h after mixing. At 30 days, the stabilized crystalline composition Includes zeolite, apatite and other minor amounts of CaCO{sub 3}, quartz, and monosulfate Impedance spectra conform with the chemical and mineralogical data. The normalized conductivity of the pastes shows an early drop, which is followed by a main decrease from about 12 h to three days. At three days, the permeability of the cement-based waste as calculated by Katz-Thompson equation is over three orders of magnitude lower than that of ordinary portland cement paste. However, a further decrease in the calculated permeability is questionable. Chemical stabilization is favorable through incorporation of waste species into apatite and zeolite.

Kruger, A.A. [Westinghouse Hanford Co., Richland, WA (United States); Olson, R.A.; Tennis, P.D. [Northwestern Univ., Evanston, IL (United States). Center for Advanced Cement-Based Materials] [and others

1995-04-01T23:59:59.000Z

136

Application to Export Electric Energy OE Docket No. EA-97-D Portland...  

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

97-D Portland General Electric Company: Federal Register Notice, Volume 79, No. 103 - May 29, 2014 Application to Export Electric Energy OE Docket No. EA-97-D Portland General...

137

HYDRAULIC CEMENT PREPARATION FROM LURGI SPENT SHALE  

SciTech Connect (OSTI)

Low cost material is needed for grouting abandoned retorts. Experimental work has shown that a hydraulic cement can be produced from Lurgi spent shale by mixing it in a 1:1 weight ratio with limestone and heating one hour at 1000C. With 5% added gypsum, strengths up to 25.8 MPa are obtained. This cement could make an economical addition up to about 10% to spent shale grout mixes, or be used in ordinary cement applications.

Mehta, P.K.; Persoff, P.; Fox, J.P.

1980-06-01T23:59:59.000Z

138

INVESTIGATIONS ON HYDRAULIC CEMENTS FROM SPENT OIL SHALE  

E-Print Network [OSTI]

CEMENTS FROM SPENT OIL SHALE P.K. Mehta and P. Persoff AprilCement Manufacture from Oil Shale, U.S. Patent 2,904,445,CEMENTS FROM SPENT OIL SHALE P, K, Mehta Civil Engineering

Mehta, P.K.

2012-01-01T23:59:59.000Z

139

Relationship Between Engineering Properties, Mineralogy, and Microstructure in Cement-Based Hydroceramic Materials Cured at  

E-Print Network [OSTI]

. I. Introduction CEMENT is universally used in the construction of oil and geothermal wells. Cement

Bentz, Dale P.

140

Hydration of a low-alkali CEM III/B-SiO{sub 2} cement (LAC)  

SciTech Connect (OSTI)

The hydration of a low-alkali cement based on CEM III/B blended with 10 wt.% of nanosilica has been studied. The nanosilica reacted within the first days and 90% of the slag reacted within 3.5 years. C-S-H (Ca/Si {approx} 1.2, Al/Si {approx} 0.12), calcite, hydrotalcite, ettringite and possibly straetlingite were the main hydrates. The pore water composition revealed ten times lower alkali concentrations than in Portland cements. Reducing conditions (HS{sup -}) and a pH value of 12.2 were observed. Between 1 month and 3.5 years of hydration more hydrates were formed due to the ongoing slag reaction but no significant differences in the composition of the pore solution or solid phase assemblage were observed. On the basis of thermodynamic calculations it is predicted that siliceous hydrogarnet could form in the long-term and, in the presence of siliceous hydrogarnet, also thaumasite. Nevertheless, even after 3.5 year hydration, neither siliceous hydrogarnet nor thaumasite have been observed.

Lothenbach, Barbara, E-mail: barbara.lothenbach@empa.ch [Empa, Laboratory for Concrete and Construction Chemistry, CH-8600 Duebendorf (Switzerland); Le Saout, Gwenn; Ben Haha, Mohsen; Figi, Renato [Empa, Laboratory for Concrete and Construction Chemistry, CH-8600 Duebendorf (Switzerland); Wieland, Erich [PSI, Laboratory for Waste Management, CH-5232 Villigen PSI (Switzerland)

2012-02-15T23:59:59.000Z

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


141

asbestos cement workers: Topics by E-print Network  

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

early stage hydration of different classes of oilwell cement Bentz, Dale P. 152 NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration Engineering Websites Summary: NISTIR...

142

ash cement concrete: Topics by E-print Network  

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

early stage hydration of different classes of oilwell cement Bentz, Dale P. 410 NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration Engineering Websites Summary: NISTIR...

143

ash substituted cements: Topics by E-print Network  

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

early stage hydration of different classes of oilwell cement Bentz, Dale P. 199 NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration Engineering Websites Summary: NISTIR...

144

asbestos cement dust: Topics by E-print Network  

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

early stage hydration of different classes of oilwell cement Bentz, Dale P. 278 NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration Engineering Websites Summary: NISTIR...

145

Multifunctional Corrosion-resistant Foamed Well Cement Composites...  

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

Multifunctional Corrosion-resistant Foamed Well Cement Composites Multifunctional Corrosion-resistant Foamed Well Cement Composites Multifunctional Corrosion-resistant Foamed Well...

146

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

flash distillation waste heat power generation demonstrationAdvanced Concepts of Waste Heat Recovery in Cement PlantsCement Ltd. also installed waste heat recovery equipment on

Worrell, Ernst

2008-01-01T23:59:59.000Z

147

Fracture model for cemented aggregates  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

A mechanisms-based fracture model applicable to a broad class of cemented aggregates and, among them, plastic-bonded explosive (PBX) composites, is presented. The model is calibrated for PBX 9502 using the available experimental data under uniaxial compression and tension gathered at various strain rates and temperatures. We show that the model correctly captures inelastic stress-strain responses prior to the load peak and it predicts the post-critical macro-fracture processes, which result from the growth and coalescence of micro-cracks. In our approach, the fracture zone is embedded into elastic matrix and effectively weakens the material's strength along the plane of the dominant fracture.

Zubelewicz, Aleksander; Thompson, Darla G.; Ostoja-Starzewski, Martin; Ionita, Axinte; Shunk, Devin; Lewis, Matthew W.; Lawson, Joe C.; Kale, Sohan; Koric, Seid

2013-01-01T23:59:59.000Z

148

Engineering properties of miniature cement - fly ash compacts prepared by high pressure compaction  

E-Print Network [OSTI]

ENGINEERING PROPERTIES OF MINIATURE CEMENT - FLY ASH COMPACTS PREPARED BY HIGH PRESSURE COMPACTION E NGIRPR OT SFMMAFU AEU C-ALEYY HDOBPvvIi va vGI ge(iD(vI oannItI au NId(R E)L xrP1IeRPvT 9(evP(n uDnuPnnBIrv au vGI eI0DPeIBIrvR uae vGI i...IteII au LEHNFA -M Ho2FYoF EDtDRv 3456 L(7ae HDO7I8v? oP1Pn FrtPrIIePrt ENGINEERING PROPERTIES OF MINIATURE CEMENT - FLY ASH COMPACTS PREPARED BY HIGH PRESSURE COMPACTION E NGIRPR OT SFMMAFU AEU C-ALEYY E99ea1Ii (R va RvTnI (ri 8arvIrv OT? LP...

Bormann, Jeffrey Ray

1985-01-01T23:59:59.000Z

149

Phosphate-bonded calcium aluminate cements  

DOE Patents [OSTI]

A method is described for making a rapid-setting phosphate-bonded cementitious material. A powdered aluminous cement is mixed with an aqueous solution of ammonium phosphate. The mixture is allowed to set to form an amorphous cementitious material which also may be hydrothermally treated at a temperature of from about 120 C to about 300 C to form a crystal-containing phosphate-bonded material. Also described are the cementitious products of this method and the cement composition which includes aluminous cement and ammonium polyphosphate. 10 figures.

Sugama, T.

1993-09-21T23:59:59.000Z

150

Guidebook for Using the Tool BEST Cement: Benchmarking and Energy Savings Tool for the Cement Industry  

E-Print Network [OSTI]

Advanced Concepts of Waste Heat Recovery in Cement Plantsquantities of low grade waste heat from the kilns or clinkerthere is significant effect of waste heat recovery on dioxin

Galitsky, Christina

2009-01-01T23:59:59.000Z

151

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

obsolete vertical shaft kiln (VSK) cement plants, with theobsolete vertical shaft kiln (VSK) cement plants, with theobsolete vertical shaft kiln (VSK) cement plants, with the

Price, Lynn

2010-01-01T23:59:59.000Z

152

The Evaluation of the Mechanical Strength of Epoxy-Based Resin as a Plugging Material, and the Development of a Novel Plug and Abandon Technique Using Vitrified Solid Epoxy-Based Resin Beads  

E-Print Network [OSTI]

mixtures, however, remained relatively constant, with the greatest drop being only 11%. The use of solid epoxy beads was found to have a compressive strength 50% greater than Portland cements I&II. In addition, the application mentioned herein eliminates...

Abuelaish, Ahmed

2012-07-16T23:59:59.000Z

153

PH-315 Portland State University Arduino PID Example Lab  

E-Print Network [OSTI]

PH-315 Portland State University Arduino PID Example Lab Bret Comnes & A. La Rosa 1. Introduction to PID PID (Proportional, Integral, Differential) is a control algorithm that tries to compensate for characteristics in your system. There are three primary components to think about in a PID control loop. Each

154

PORTLAND STATE UNIVERSITY DEPARTMENT OF CIVIL & ENVIRONMENTAL ENGINEERING  

E-Print Network [OSTI]

. Government Accession No. 3. Recipient's Catalog No. 4. Title and Subtitle ELECTRONIC COMMUNICATIONS FROM Portland, Oregon 97201 11. Contract or Grant No. J9-05-54-02-DMV 13. Type of Report and Period Covered can be extended to the conversion of other transactions between government agencies that are currently

Bertini, Robert L.

155

Revised 11/19/10 Portland State University  

E-Print Network [OSTI]

understanding needed to deal with environmental systems and human impacts on those systems and social: Environmental Ethics HST 339: The Environment and History GEOG 347: Environmental Issues and ActionRevised 11/19/10 Portland State University Bachelor of Arts/Bachelor of Science in Environmental

156

2012 Portland General Electric. All rights reserved. Planning for Demand  

E-Print Network [OSTI]

2/13/2013 1 © 2012 Portland General Electric. All rights reserved. Planning for Demand Response Balance: Energy #12;2/13/2013 2 3 PGE Load ­ Resource Balance: Winter Capacity 4 Traditional Role decade, access to a material portion of its legacy hydro resources. Meanwhile, PGE (and other IOU

157

March 15, 2006Portland State University Electronic Communications from Oregon  

E-Print Network [OSTI]

of the Practice · Institutional and Technical Barriers to Implementation · Feasibility Assessment/Security Power failure Number of Responses [N=49] #12;March 15, 2006Portland State University Technical Barriers & Motor Vehicle Services Division: A Feasibility Assessment Christopher M. Monsere, Principal Investigator

Bertini, Robert L.

158

Supply chain management in the cement industry  

E-Print Network [OSTI]

Traditionally supply chain management has played an operational role within cement and mineral extraction commodity companies. Recently, cost reduction projects have brought supply chain management into the limelight. In ...

Agudelo, Isabel

2009-01-01T23:59:59.000Z

159

A nanochemomechanical investigation of carbonated cement paste  

E-Print Network [OSTI]

Concrete, and in particular its principal component, cement paste, has an interesting relation with carbon dioxide. Concrete is a carbon dioxide generator-- it is estimated that 5-10% of atmospheric CO? comes from this ...

Vanzo, James (James F.)

2009-01-01T23:59:59.000Z

160

HYDRAULIC CEMENT PREPARATION FROM LURGI SPENT SHALE  

E-Print Network [OSTI]

cement from spent oil shale," Vol. 10, No. 4, p. 54S,Colorado's primary oil shale resource for vertical modifiedSimulated effects of oil-shale development on the hydrology

Mehta, P.K.

2013-01-01T23:59:59.000Z

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


161

HYDRAULIC CEMENT PREPARATION FROM LURGI SPENT SHALE  

E-Print Network [OSTI]

hydraulic cement from spent oil shale," Vol. 10, No. 4, p.J. W. , "Colorado's primary oil shale resource for verticalSimulated effects of oil-shale development on the hydrology

Mehta, P.K.

2013-01-01T23:59:59.000Z

162

The following information is intended to complement and support existing policies and procedures in place at Portland State University ("PSU") and the Portland State University Foundation ("PSU Foundation")  

E-Print Network [OSTI]

in place at Portland State University ("PSU") and the Portland State University Foundation ("PSU Foundation Foundation and the Executive Director for Financial Services and Controller will sign on behalf of PSU consider the value of the gift to the University or the PSU Foundation. Please consider the following

Caughman, John

163

Hydration studies of calcium sulfoaluminate cements blended with fly ash  

SciTech Connect (OSTI)

The main objective of this work is to study the hydration and properties of calcium sulfoaluminate cement pastes blended with fly ash (FA) and the corresponding mortars at different hydration ages. Laboratory X-ray powder diffraction, rheological studies, thermal analysis, porosimetry and compressive strength measurements were performed. The analysis of the diffraction data by Rietveld method allowed quantifying crystalline phases and overall amorphous contents. The studied parameters were: i) FA content, 0, 15 and 30 wt.%; and ii) water addition, water-to-CSA mass ratio (w/CSA = 0.50 and 0.65), and water-to-binder mass ratio (w/b = 0.50). Finally, compressive strengths after 6 months of 0 and 15 wt.% FA [w/CSA = 0.50] mortars were similar: 73 2 and 72 3 MPa, respectively. This is justified by the filler effect of the FA as no strong evidences of reactivity of FA with CSA were observed. These results support the partial substitution of CSA cements with FA with the economic and environmental benefits.

Garca-Mat, M.; De la Torre, A.G. [Departamento de Qumica Inorgnica, Cristalografa y Mineraloga, Universidad de Mlaga, 29071 Mlaga (Spain)] [Departamento de Qumica Inorgnica, Cristalografa y Mineraloga, Universidad de Mlaga, 29071 Mlaga (Spain); Len-Reina, L. [Servicios Centrales de Apoyo a la Investigacin, Universidad de Mlaga, 29071 Mlaga (Spain)] [Servicios Centrales de Apoyo a la Investigacin, Universidad de Mlaga, 29071 Mlaga (Spain); Aranda, M.A.G. [Departamento de Qumica Inorgnica, Cristalografa y Mineraloga, Universidad de Mlaga, 29071 Mlaga (Spain) [Departamento de Qumica Inorgnica, Cristalografa y Mineraloga, Universidad de Mlaga, 29071 Mlaga (Spain); CELLS-Alba synchrotron, Carretera BP 1413, Km. 3.3, E-08290 Cerdanyola, Barcelona (Spain); Santacruz, I., E-mail: isantacruz@uma.es [Departamento de Qumica Inorgnica, Cristalografa y Mineraloga, Universidad de Mlaga, 29071 Mlaga (Spain)

2013-12-15T23:59:59.000Z

164

INVESTIGATIONS ON HYDRAULIC CEMENTS FROM SPENT OIL SHALE  

E-Print Network [OSTI]

20 to 40% of the oil shale, and explosively rubblizing andCEMENTS FROM SPENT OIL SHALE P.K. Mehta and P. Persoff AprilCement Manufacture from Oil Shale, U.S. Patent 2,904,445,

Mehta, P.K.

2012-01-01T23:59:59.000Z

165

Identification of Concrete Incompatibilities Using Cement Paste Rheology  

E-Print Network [OSTI]

as well as heat evolution abnormalities. The objectives of the present study were to examine the applicability of the dynamic shear rheometer (DSR) to measure cement paste rheology, and to identify cement and mineral/chemical admixture incompatibilities...

Jang, Se Hoon

2010-07-14T23:59:59.000Z

166

Development of an Improved Cement for Geothermal Wells  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Develop a novel, zeolite-containing lightweight, high temperature, high pressure geothermal cement, which will provide operators with an easy to use, flexible cementing system that saves time and simplifies logistics.

167

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

and energy savings per tonne of cement produced are estimated and then carbon dioxide emissionsand energy savings per tonne of cement produced are estimated and then carbon dioxide emissions

Worrell, Ernst

2008-01-01T23:59:59.000Z

168

City of Portland, Michigan (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDITOhioOglesby, Illinois (UtilityPortland Place: Michigan References: EIA Form

169

Master Thesis: Simulation of plastic deformation in cemented carbide inserts  

E-Print Network [OSTI]

Master Thesis: Simulation of plastic deformation in cemented carbide inserts Background Sandvik in cemented carbide, high-speed steel and other hard materials such as diamond, cubic boron nitride in cemented carbide inserts will be performed using the FEM software Ansys and AdvantEdge. The work

Haviland, David

170

Successful Alternatives to Conventional Cement Designs in the Williston Basin  

SciTech Connect (OSTI)

Since mid-1981, 36 wells have been cemented in the Williston Basin with a cementing system diametrically opposed to conventional cementing designs used for bonding across massive salt members. Since implementation, along with the use of relaxed invert emulsion oil mud, not one casing problem has arisen in the wells where these systems were used.

Bryant, G.A.

1984-05-01T23:59:59.000Z

171

NIST Special Publication 1173 Virtual Cement and Concrete  

E-Print Network [OSTI]

#12;NIST Special Publication 1173 Virtual Cement and Concrete Testing Laboratory Version 9.5 User;Virtual Cement and Concrete Testing Laboratory Version 9.5 User Guide Jeffrey W. Bullard1 Materials-8615 This document serves as the user's guide for the Virtual Cement and Con- crete Testing Laboratory (VCCTL

172

THE IMPACT OF DISSOLVED SALTS ON PASTES CONTAINING FLY ASH, CEMENT AND SLAG  

SciTech Connect (OSTI)

The degree of hydration of a mixture of cementitious materials (Class F fly ash, blast furnace slag and portland cement) in highly concentrated alkaline salt solutions is enhanced by the addition of aluminate to the salt solution. This increase in the degree of hydration, as monitored with isothermal calorimetry, leads to higher values of dynamic Young's modulus and compressive strength and lower values of total porosity. This enhancement in performance properties of these cementitious waste forms by increased hydration is beneficial to the retention of the radionuclides that are also present in the salt solution. The aluminate ions in the solution act first to retard the set time of the mix but then enhance the hydration reactions following the induction period. In fact, the aluminate ions increase the degree of hydration by {approx}35% over the degree of hydration for the same mix with a lower aluminate concentration. An increase in the blast furnace slag concentration and a decrease in the water to cementitious materials ratio produced mixes with higher values of Young's modulus and lower values of total porosity. Therefore, these operational factors can be fine tuned to enhance performance properties of cementitious waste form. Empirical models for Young modulus, heat of hydration and total porosity were developed to predict the values of these properties. These linear models used only statistically significant compositional and operational factors and provided insight into those factors that control these properties.

Harbour, J.; Edwards, T.; Williams, V.

2009-09-21T23:59:59.000Z

173

The variability of fly ash and its effects on selected properties of fresh Portland cement/fly ash mortars  

E-Print Network [OSTI]

the needed quality control of concrete . Another source of concern results from the recent development of lignite and sub-bituminous coal as fuel sources. The ash produced from these coals is of a different chemical composition than traditional bituminous... 50 percent to greater than 200 percent of a control test. An exhaustive literature review has revealed neglig1ble information concerning the PAI of sub- b1tuminous and lignite ashes. Research is greatly needed to determine the ash properties...

McKerall, William Carlton

1980-01-01T23:59:59.000Z

174

How to run and cement liners  

SciTech Connect (OSTI)

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

Bowman, G.R.; Sherer, B.

1988-09-01T23:59:59.000Z

175

Burning hazardous waste in cement kilns  

SciTech Connect (OSTI)

The cement manufacturing process is one of the oldest in the world, having been in practice for over 2000 years. It is also one of the most energy intensive, with up to 65 percent of the cost of the product attributable to energy consumption. In addition to high energy demand, the process conditions include extremely high temperatures. Cement clinker forms when the correct mixture of raw materials is heated to 2650/sup 0/ F. This requires combustion temperatures exceeding 3000/sup 0/ F. under oxidizing conditions. To accomplish this, gas temperatures above 2000/sup 0/ F. occur for several seconds (typically five seconds), which is much longer than residence times in permitted hazardous waste incinerators. These conditions are extremely favorable to the destruction of organic compounds and have led to extensive investigation into the potential for burning hazardous waste in cement kilns. Cement kilns consuming hazardous wastes have been tested for air emissions under various operating conditions. The substantial body of information on the emissions and handling of hazardous wastes from these studies has demonstrated that effective destruction of wastes can be accomplished with the added benefits of energy conservation and no significant change in air emissions.

Chadbourne, J.F.; Helmsteller, A.J.

1983-06-01T23:59:59.000Z

176

Corrosion-resistant Foamed Cements for Carbon Steels  

SciTech Connect (OSTI)

The cementitious material consisting of Secar #80, Class F fly ash, and sodium silicate designed as an alternative thermal-shock resistant cement for the Enhanced Geothermal System (EGS) wells was treated with cocamidopropyl dimethylamine oxide-based compound as foaming agent (FA) to prepare numerous air bubble-dispersed low density cement slurries of and #61603;1.3 g/cm3. Then, the foamed slurry was modified with acrylic emulsion (AE) as corrosion inhibitor. We detailed the positive effects of the acrylic polymer (AP) in this emulsion on the five different properties of the foamed cement: 1) The hydrothermal stability of the AP in 200 and #61616;C-autoclaved cements; 2) the hydrolysis-hydration reactions of the slurry at 85 and #61616;C; 3) the composition of crystalline phases assembled and the microstructure developed in autoclaved cements; 4) the mechanical behaviors of the autoclaved cements; and, 5) the corrosion mitigation of carbon steel (CS) by the polymer. For the first property, the hydrothermal-catalyzed acid-base interactions between the AP and cement resulted in Ca-or Na-complexed carboxylate derivatives, which led to the improvement of thermal stability of the AP. This interaction also stimulated the cement hydration reactions, enhancing the total heat evolved during cements curing. Addition of AP did not alter any of the crystalline phase compositions responsible for the strength of the cement. Furthermore, the AP-modified cement developed the porous microstructure with numerous defect-free cavities of disconnected voids. These effects together contributed to the improvement of compressive-strength and toughness of the cured cement. AP modification of the cement also offered an improved protection of CS against brine-caused corrosion. There were three major factors governing the corrosion protection: 1) Reducing the extents of infiltration and transportation of corrosive electrolytes through the cement layer deposited on the underlying CS surfaces; 2) inhibiting the cathodic reactions at the corrosion site of CS; 3) extending the coverage of cement over CS surfaces; and, 4) improving the adherence of the cement to CS surfaces. Thus, the CSs corrosion rate of 176 milli inch/per year (mpy) for 1 wt% FA-foamed cement without AP was considerably reduced to 69 mpy by adding only 2 wt% AP. Addition of AP at 10 wt% further reduced this rate to less than 10 mpy.

Sugama T.; Gill, S.; Pyatina, T., Muraca, A.; Keese, R.; Khan, A.; Bour, D.

2012-12-01T23:59:59.000Z

177

EA-97-B Portland General Electric Company | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergy DOEDealingVehicle1 Closing American Electric0-A2 GDFB Portland

178

EA-97-C Portland General Electric | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergy DOEDealingVehicle1 Closing American Electric0-A2 GDFB PortlandC

179

EA-97-D Portland General Electric Company | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergy DOEDealingVehicle1 Closing American Electric0-A2 GDFB PortlandCD

180

Life-Cycle Evaluation of Concrete Building Construction as a Strategy for Sustainable Cities  

E-Print Network [OSTI]

BTu/tonne cement) Baseline Portland Cement produced at wet kiln long dry kiln Coal Electricity Distillate (diesel)

Stadel, Alexander

2013-01-01T23:59:59.000Z

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


181

Cement Kiln Flue Gas Recovery Scrubber Project  

SciTech Connect (OSTI)

The Cement Kiln Flue Gas Recovery Scrubber Project was a technical success and demonstrated the following: CKD can be used successfully as the sole reagent for removing SO2 from cement kiln flue gas, with removal efficiencies of 90 percent or greater; Removal efficiencies for HCl and VOCs were approximately 98 percent and 70 percent, respectively; Particulate emissions were low, in the range of 0.005 to 0.007 grains/standard cubic foot; The treated CKD sorbent can be recycled to the kiln after its potassium content has been reduced in the scrubber, thereby avoiding the need for landfilling; The process can yield fertilizer-grade K2SO4, a saleable by-product; and Waste heat in the flue gas can provide the energy required for evaporation and crystallization in the by-product recovery operation. The demonstration program established the feasibility of using the Recovery Scrubber{trademark} for desulfurization of flue gas from cement kilns, with generally favorable economics, assuming tipping fees are available for disposal of ash from biomass combustion. The process appears to be suitable for commercial use on any type of cement kiln. EPA has ruled that CKD is a nonhazardous waste, provided the facility meets Performance Standards for the Management of CKD (U.S. Environmental Protection Agency 1999d). Therefore, regulatory drivers for the technology focus more on reduction of air pollutants and pollution prevention, rather than on treating CKD as a hazardous waste. Application of the Recovery Scrubbe{trademark} concept to other waste-disposal operations, where pollution and waste reductions are needed, appears promising.

National Energy Technology Laboratory

2001-11-30T23:59:59.000Z

182

New techniques for monitoring cement hydration under simulated well conditions  

SciTech Connect (OSTI)

Fourier transform infrared spectroscopy and synchrotron X-ray powder diffraction methods are described for studying cement hydration chemistry at temperatures up to 200 C, covering the normal temperature range of wellbore cementing. The methods provide complementary information on the transformation of silicate, ferrite and sulfate minerals. The thermal decomposition of the cement mineral ettringite is shown to occur at 114 C in a sealed system in contact with water. The FTIR spectrum of a well cement slurry hydrating at 150 C and 2,000 psi is analyzed. The anomalous thickening time behavior of certain cements around 75--100 C is discussed in the light of new data on the hydration of a Class G cement at 65 and 95 C, with and without retarder.

Luke, K.; Hall, C.; Jones, T. [Schlumberger Cambridge Research (United Kingdom); Barnes, P.; Turillas, X.; Lewis, A. [Univ. of London (United Kingdom). Birkbeck College

1995-11-01T23:59:59.000Z

183

An investigation of cement mortar thermal storage characteristics  

E-Print Network [OSTI]

energy storage characteristics of solid cement mortar cylinders. Two var1a- tions 1nvolving mechanically induced porosity were also investigated. Rocks, a commonly used sensible heat storage material, were tested to prov1de a reference for the cement... mortar. A numer1cal model, analogous to program available for rock bed storage systems, simulating the cement mortar cylinder storage section was developed. Heat transfer coefficients were calculated from the experimental data for use in the model...

Davis, Glenn Baker

2012-06-07T23:59:59.000Z

184

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

the small cement plants, earthen vertical kiln (and hollowcement plant in North China utilizing vertical shaft kilnscement has ordered a vertical roller mill for the new kiln

Worrell, Ernst

2008-01-01T23:59:59.000Z

185

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

Lime Institute. 2001. Energy Efficiency Opportunity Guide inIndustry, Office of Energy Efficiency, Natural Resourcesof a Cement Kiln, Energy Efficiency Demonstration Scheme,

Worrell, Ernst

2008-01-01T23:59:59.000Z

186

Multifunctional Corrosion-resistant Foamed Well Cement Composites  

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

Multifunctional Corrosion-resistant Foamed Well Cement Composites Project Officer: Dan KingGreg Stillman Total budget: 300 K April 24 , 2013 Principal Investigator: Dr. Toshifumi...

187

Optimization Online - The carbon leakage effect on the cement ...  

E-Print Network [OSTI]

Feb 8, 2015 ... This paper investigates the impact of these two policies on the cement sector ... Environmental policies, Generalized Nash Equilibrium Problem.

Elisabetta Allevi

2015-02-08T23:59:59.000Z

188

Development of an Improved Cement for Geothermal Wells  

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

availability. * Schedule slippage resulting from delays in the fabrication of Chandler Engineering specialized high pressurehigh temperature cement testing equipment. 6 | US...

189

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

on Power Generation by Waste Heat of the Kiln in NingguoPure Low Temperature & Waste Heat in Beijing Cement Ltd. ;flash distillation waste heat power generation demonstration

Worrell, Ernst

2008-01-01T23:59:59.000Z

190

InstantaneousIn-SituDetermination of Water-CementRatio of Fresh Concrete  

E-Print Network [OSTI]

method for cement content determination of fresh concrete.Cement and Concrete Research, 1980. 10(1): p. 23-34. Hime,the cement content of plastic concrete. ASTM Bulletin, 1955.

Mancio, Mauricio; Moore, Jeffrey R.; Brooks, Zenzile; Monteiro, Paulo J. M.; Glaser, Steve D.

2010-01-01T23:59:59.000Z

191

Portland General Electic RFP--deadline for intent to bid September...  

Open Energy Info (EERE)

RFPs LShapton's picture Submitted by LShapton(9) Member 28 August, 2013 - 15:09 Portland General Electric has issued an RFP for marketing and supply for its voluntary renewable...

192

Microsoft PowerPoint - To NETL Albany Site from Portland, Oregon...  

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

Portland, Oregon Airport (PDX) 1. Take the AIRPORT EXIT RD. until it intersects I-205. 2. Follow I-205 SOUTH for 25 MILES to the intersection with I-5 SOUTH (Salem exit). 3. Follow...

193

Energy Efficiency Improvement and Cost Saving Opportunities for Cement Making. An ENERGY STAR Guide for Energy and Plant Managers  

E-Print Network [OSTI]

Modern Vertical Shaft Kiln Technology World Cement 1 26cement has ordered a vertical roller mill for the new kiln

Worrell, Ernst

2008-01-01T23:59:59.000Z

194

E-Print Network 3.0 - affect cement penetration Sample Search...  

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

a coating Summary: as an admixture in cement and as a coating on cement for electromagnetic interference shielding'' J. Cao, D... parameters that affect the shielding...

195

E-Print Network 3.0 - aluminate cement blended Sample Search...  

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

predicting the setting times of Type I cement concrete and blended... -29, 1980. 20. Tay, J. .H., Properties of Pulverized Sludge Ash Blended Cement. ACI Materials Journals... OF...

196

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

Wang, L. , 2008. Alternative fuel using and waste materialPolicy Research on Alternative Fuels for Cement Industry incement and using alternative fuels in the cement kiln. There

Price, Lynn

2010-01-01T23:59:59.000Z

197

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

UNFCCC), 2007 b. Energy efficiency measures at cementUNFCCC), 2007 c. Energy efficiency measures at cementBanerjee, R. , 2005. Energy Efficiency and Demand Side

Price, Lynn

2010-01-01T23:59:59.000Z

198

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

and MAIN, 1993. Energy Technology in the Cement Industrialof Demonstrated Energy Technologies (CADDET), Internationaland MAIN. 1993. Energy Technology in the Cement Industrial

Price, Lynn

2010-01-01T23:59:59.000Z

199

Non-destructive thermal wave method applied to study thermal properties of fast setting time endodontic cement  

SciTech Connect (OSTI)

The thermal wave method is applied for thermal properties measurement in fast endodontic cement (CER). This new formula is developed upon using Portland cement in gel and it was successfully tested in mice with good biocompatibility and stimulated mineralization. Recently, thermal expansion and setting time were measured, conferring to this material twice faster hardening than the well known Angelus Mineral trioxide aggregate (MTA) the feature of fast hardening (?7?min) and with similar thermal expansion (?12??strain/?C). Therefore, it is important the knowledge of thermal properties like thermal diffusivity, conductivity, effusivity in order to match thermally the tissue environment upon its application in filling cavities of teeth. Photothermal radiometry technique based on Xe illumination was applied in CER disks 600 ?m thick for heating, with prepared in four particle sizes (25, 38, 45, and 53) ?m, which were added microemulsion gel with variation volumes (140, 150, 160, and 170) ?l. The behavior of the thermal diffusivity CER disks shows linear decay for increase emulsion volume, and in contrast, thermal diffusivity increases with particles sizes. Aiming to compare to MTA, thermal properties of CER were averaged to get the figure of merit for thermal diffusivity as (44.2 3.6) 10{sup ?3} cm{sup 2}/s, for thermal conductivity (228 32) mW/cm K, the thermal effusivity (1.09 0.06) W s{sup 0.5}/cm{sup 2} K and volume heat capacity (5.2 0.7) J/cm{sup 3} K, which are in excellent agreement with results of a disk prepared from commercial MTA-Angelus (grain size < 10 ?m using 57 ?l of distilled water)

Picolloto, A. M.; Mariucci, V. V. G.; Szpak, W.; Medina, A. N.; Baesso, M. L.; Astrath, N. G. C.; Astrath, F. B. G.; Bento, A. C., E-mail: acbento@uem.br [Departamento de Fsica, Grupo de Espectroscopia Fotoacstica e Fototrmica, Universidade Estadual de Maring UEM, Av. Colombo 5790, 87020-900 Maring, Paran (Brazil); Santos, A. D.; Moraes, J. C. S. [Departamento de Fsica e Qumica, Universidade Estadual Paulista Jlio de Mesquita Filho UNESP, Av. Brasil 56, 15385-000 Ilha Solteira, SP (Brazil)

2013-11-21T23:59:59.000Z

200

Guidebook for Using the Tool BEST Cement: Benchmarking and Energy Savings Tool for the Cement Industry  

SciTech Connect (OSTI)

The Benchmarking and Energy Savings Tool (BEST) Cement is a process-based tool based on commercially available efficiency technologies used anywhere in the world applicable to the cement industry. This version has been designed for use in China. No actual cement facility with every single efficiency measure included in the benchmark will likely exist; however, the benchmark sets a reasonable standard by which to compare for plants striving to be the best. The energy consumption of the benchmark facility differs due to differences in processing at a given cement facility. The tool accounts for most of these variables and allows the user to adapt the model to operational variables specific for his/her cement facility. Figure 1 shows the boundaries included in a plant modeled by BEST Cement. In order to model the benchmark, i.e., the most energy efficient cement facility, so that it represents a facility similar to the user's cement facility, the user is first required to input production variables in the input sheet (see Section 6 for more information on how to input variables). These variables allow the tool to estimate a benchmark facility that is similar to the user's cement plant, giving a better picture of the potential for that particular facility, rather than benchmarking against a generic one. The input variables required include the following: (1) the amount of raw materials used in tonnes per year (limestone, gypsum, clay minerals, iron ore, blast furnace slag, fly ash, slag from other industries, natural pozzolans, limestone powder (used post-clinker stage), municipal wastes and others); the amount of raw materials that are preblended (prehomogenized and proportioned) and crushed (in tonnes per year); (2) the amount of additives that are dried and ground (in tonnes per year); (3) the production of clinker (in tonnes per year) from each kiln by kiln type; (4) the amount of raw materials, coal and clinker that is ground by mill type (in tonnes per year); (5) the amount of production of cement by type and grade (in tonnes per year); (6) the electricity generated onsite; and, (7) the energy used by fuel type; and, the amount (in RMB per year) spent on energy. The tool offers the user the opportunity to do a quick assessment or a more detailed assessment--this choice will determine the level of detail of the energy input. The detailed assessment will require energy data for each stage of production while the quick assessment will require only total energy used at the entire facility (see Section 6 for more details on quick versus detailed assessments). The benchmarking tool provides two benchmarks--one for Chinese best practices and one for international best practices. Section 2 describes the differences between these two and how each benchmark was calculated. The tool also asks for a target input by the user for the user to set goals for the facility.

Galitsky, Christina; Price, Lynn; Zhou, Nan; Fuqiu , Zhou; Huawen, Xiong; Xuemin, Zeng; Lan, Wang

2008-07-30T23:59:59.000Z

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


201

Cement (2010 MECS) | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation Sites ProposedOccupational HealthcatalystsMaking Same -Cement (2010

202

High Temperature Cements | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:GreerHi Gtel Jump to: navigation,Solar Power Plant JumpDrillingCements

203

Cement Bond Log | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin:Energy Information on PV EconomicsOregon: Energy ResourcesCeilingCement Bond

204

Communication Electric polarization in carbon fiber-reinforced cement  

E-Print Network [OSTI]

Communication Electric polarization in carbon fiber-reinforced cement Sihai Wen, D.D.L. Chung Abstract Electric polarization induced an increase of the measured electrical resistivity of carbon fiber of the cement paste through the use of carbon fibers that were more crystalline, the increase of the fiber

Chung, Deborah D.L.

205

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

­ Site secured with Port of Portland ­ Final Air permit issued ­ Site Certificate Proposed Order issued

206

Mechanical and Thermal Properties of Fly Ash-based Geopolymer Cement.  

E-Print Network [OSTI]

??The geopolymer concrete is a more durable and green material with less CO2 emission and less energy consuming as compared with the widely used Portland (more)

Fan, Fenghong

2015-01-01T23:59:59.000Z

207

Magnesium phosphate glass cements with ceramic-type properties  

DOE Patents [OSTI]

Rapid setting magnesium phosphate (Mg glass) cementitious materials consisting of magnesium phosphate cement paste, polyborax and water-saturated aggregate exhibiting rapid setting and high early strength characteristics. The magnesium glass cement is prepared from a cation-leachable powder and a bivalent metallic ion-accepting liquid such as an aqueous solution of diammonium phosphate and ammonium polyphosphate. The cation-leachable powder includes a mixture of two different magnesium oxide powders processed and sized differently which when mixed with the bivalent metallic ion-accepting liquid provides the magnesium glass cement consisting primarily of magnesium ortho phosphate tetrahydrate, with magnesium hydroxide and magnesium ammonium phosphate hexahydrate also present. The polyborax serves as a set-retarder. The resulting magnesium mono- and polyphosphate cements are particularly suitable for use as a cementing matrix in rapid repair systems for deteriorated concrete structures as well as construction materials and surface coatings for fireproof structures.

Sugama, Toshifumi (Mastic Beach, NY); Kukacka, Lawrence E. (Port Jefferson, NY)

1984-03-13T23:59:59.000Z

208

Magnesium-phosphate-glass cements with ceramic-type properties  

DOE Patents [OSTI]

Rapid setting magnesium phosphate (Mg glass) cementitious materials consisting of magnesium phosphate cement paste, polyborax and water-saturated aggregate, exhibits rapid setting and high early strength characteristics. The magnesium glass cement is prepared from a cation-leachable powder and a bivalent metallic ion-accepting liquid such as an aqueous solution of diammonium phosphate and ammonium polyphosphate. The cation-leachable powder includes a mixture of two different magnesium oxide powders processed and sized differently which when mixed with the bivalent metallic ion-accepting liquid provides the magnesium glass cement consisting primarily of magnesium ortho phosphate tetrahydrate, with magnesium hydroxide and magnesium ammonium phosphate hexahydrate also present. The polyborax serves as a set-retarder. The resulting magnesium mono- and polyphosphate cements are particularly suitable for use as a cementing matrix in rapid repair systems for deteriorated concrete structures as well as construction materials and surface coatings for fireproof structures.

Sugama, T.; Kukacka, L.E.

1982-09-23T23:59:59.000Z

209

The effects of the mechanicalchemical stabilization process for municipal solid waste incinerator fly ash on the chemical reactions in cement paste  

SciTech Connect (OSTI)

Highlights: ? Milling extracted MSWI fly ash. ? Increasing specific surface area, destruction of the crystalline texture, and increasing the amount of amorphous materials. ? Increasing heavy metal stability. ? Inducing pozzolanic reactions and increasing the early and later strength of the cement paste. - Abstract: A water extraction process can remove the soluble salts present in municipal solid waste incinerator (MSWI) fly ash, which will help to increase the stability of the synthetic materials produced from the MSWI fly ash. A milling process can be used to stabilize the heavy metals found in the extracted MSWI fly ash (EA) leading to the formation of a non-hazardous material. This milled extracted MSWI fly ash (MEA) was added to an ordinary Portland cement (OPC) paste to induce pozzolanic reactions. The experimental parameters included the milling time (96 h), water to binder ratios (0.38, 0.45, and 0.55), and curing time (1, 3, 7 and 28 days). The analysis procedures included inductively coupled plasma atomic emission spectroscopy (ICP/AES), BET, mercury intrusion porosimetry (MIP), X-ray diffraction (XRD), and nuclear magnetic resonance (NMR) imaging. The results of the analyses indicate that the milling process helped to stabilize the heavy metals in the MEA, with an increase in the specific surface area of about 50 times over that of OPC. The addition of the MEA to the OPC paste decreased the amount of Ca(OH){sub 2} and led to the generation of calciumsilicatehydrates (CSH) which in turned increased the amount of gel pores and middle sized pores in the cement. Furthermore, a comparison shows an increase in the early and later strength over that of OPC paste without the addition of the milled extracted ash. In other words, the milling process could stabilize the heavy metals in the MEA and had an activating effect on the MEA, allowing it to partly substitute OPC in OPC paste.

Chen, Cheng-Gang [Department of Water Resources and Environmental Engineering, Tamkang University, 151, Ying-chung Road, Tamsui Dist., New Taipei City 251, Taiwan, ROC (China); Sun, Chang-Jung, E-mail: sun.3409@hotmail.com [Department of Environmental Technology and Management, Taoyuan Innovation Institute of Technology, 414, Sec. 3, Jhongshan E. Rd., Zhongli City, Taoyuan County 320, Taiwan, ROC (China); Gau, Sue-Huai; Wu, Ching-Wei; Chen, Yu-Lun [Department of Water Resources and Environmental Engineering, Tamkang University, 151, Ying-chung Road, Tamsui Dist., New Taipei City 251, Taiwan, ROC (China)

2013-04-15T23:59:59.000Z

210

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

Obenchain, PacifiCorp Ray Grinberg, Peninsula Light Co. Robert Brown, Portland General Electric Ted Drennan Energy Coalition Phil Carver, Oregon Department of Energy Stefan Brown, Portland General Electric Greg, Portland General Electric Doug Brawley, PNGC Power Dan James, PNGC Power Jeff Kugel, PNGC Power Toms

211

PROPOSAL GRADUATE CERTIFICATE IN TRANSPORTATION 6/9/2003 PORTLAND STATE UNIVERSITY / CENTER FOR TRANSPORTATION STUDIES PAGE 1 OF 7  

E-Print Network [OSTI]

PROPOSAL ­ GRADUATE CERTIFICATE IN TRANSPORTATION 6/9/2003 PORTLAND STATE UNIVERSITY / CENTER FOR TRANSPORTATION STUDIES PAGE 1 OF 7 PROPOSAL FOR THE INITIATION OF A NEW INSTRUCTIONAL PROGRAM LEADING TO A GRADUATE CERTIFICATE IN TRANSPORTATION PORTLAND STATE UNIVERSITY COLLEGE OF URBAN AND PUBLIC AFFAIRS SCHOOL

Bertini, Robert L.

212

Understanding the Link Between Bicyclists and Light Rail Survey Results from Bicycle Riders on MAX in Portland, Oregon  

E-Print Network [OSTI]

Understanding the Link Between Bicyclists and Light Rail Survey Results from Bicycle Riders on MAX Introduction 1 Portland Bicycle Master Plan, Section V 2 History of Bicycles on MAX 3 Benefits of the Bicycle is a bicycle friendly city. In 1995 and 1998, Bicycling Magazine named Portland the best city for bicycling

Bertini, Robert L.

213

Abstract The concurrent goals of cement hydration are to percolate (bridge) the original  

E-Print Network [OSTI]

Cement hydration ? Low temperature calorimetry ? Microstructure ? Percolation ? Porosity ? Rheology ?, however, cement-based materials exhibit a highly dynamic (micro)structure that is extremely sen- sitive. Because many of the cement hydration prod- ucts form around the initial cement clinker par- ticles

Bentz, Dale P.

214

Time-dependent behaviour of hardened cement paste under isotropic loading  

E-Print Network [OSTI]

of hardened cement paste under isotropic loading, Cement and Concrete Research, doi: 10.1016/j.cemconres.2012.03.002 hal-00689716,version1-19Apr2012 Author manuscript, published in "Cement and Concrete Research (2012 the framework of the classical theory of porous media. The effects of water-to-cement ratio and chemical

Paris-Sud XI, Université de

215

Energy, environmental and greenhouse gas effects of using alternative fuels in cement production  

E-Print Network [OSTI]

1 Energy, environmental and greenhouse gas effects of using alternative fuels in cement to an increase of AF use from 8.7% to 20.9% of the total energy consumption. 2. One of the alternative fuels used cement industry produces about 3.3 billion tonnes of cement annually. Cement production is energy

Columbia University

216

Z .Chemical Geology 152 1998 257271 The thermal and cementation histories of a sandstone petroleum  

E-Print Network [OSTI]

Z .Chemical Geology 152 1998 257­271 The thermal and cementation histories of a sandstone petroleum of the cement formed, the maturation of petroleum in the interbedded shales likely postdates cementation. q 1998 of partially cemented petroleum reservoirs may help in constraining the physical character of a reservoir

217

Energy Efficiency Improvement Opportunities for the Cement Industry  

SciTech Connect (OSTI)

This report provides information on the energy savings, costs, and carbon dioxide emissions reductions associated with implementation of a number of technologies and measures applicable to the cement industry. The technologies and measures include both state-of-the-art measures that are currently in use in cement enterprises worldwide as well as advanced measures that are either only in limited use or are near commercialization. This report focuses mainly on retrofit measures using commercially available technologies, but many of these technologies are applicable for new plants as well. Where possible, for each technology or measure, costs and energy savings per tonne of cement produced are estimated and then carbon dioxide emissions reductions are calculated based on the fuels used at the process step to which the technology or measure is applied. The analysis of cement kiln energy-efficiency opportunities is divided into technologies and measures that are applicable to the different stages of production and various kiln types used in China: raw materials (and fuel) preparation; clinker making (applicable to all kilns, rotary kilns only, vertical shaft kilns only); and finish grinding; as well as plant wide measures and product and feedstock changes that will reduce energy consumption for clinker making. Table 1 lists all measures in this report by process to which they apply, including plant wide measures and product or feedstock changes. Tables 2 through 8 provide the following information for each technology: fuel and electricity savings per tonne of cement; annual operating and capital costs per tonne of cement or estimated payback period; and, carbon dioxide emissions reductions for each measure applied to the production of cement. This information was originally collected for a report on the U.S. cement industry (Worrell and Galitsky, 2004) and a report on opportunities for China's cement kilns (Price and Galitsky, in press). The information provided in this report is based on publicly-available reports, journal articles, and case studies from applications of technologies around the world.

Price, Lynn; Worrell, Ernst; Galitsky, Christina; Price, Lynn

2008-01-31T23:59:59.000Z

218

Characterization and modeling of the cemented sediment surrounding...  

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

cement phase is likely the reaction between the glass and the sea water to from a Mg-silicate, here modeled as sepiolite. Citation: Strachan DM, JV Crum, JV Ryan, and A...

219

Potential for energy conservation in the cement industry  

SciTech Connect (OSTI)

This report assesses the potential for energy conservation in the cement industry. Energy consumption per ton of cement decreased 20% between 1972 and 1982. During this same period, the cement industry became heavily dependent on coal and coke as its primary fuel source. Although the energy consumed per ton of cement has declined markedly in the past ten years, the industry still uses more than three and a half times the fuel that is theoretically required to produce a ton of clinker. Improving kiln thermal efficiency offers the greatest opportunity for saving fuel. Improving the efficiency of finish grinding offers the greatest potential for reducing electricity use. Technologies are currently available to the cement industry to reduce its average fuel consumption per ton by product by as much as 40% and its electricity consumption per ton by about 10%. The major impediment to adopting these technologies is the cement industry's lack of capital as a result of low or no profits in recent years.

Garrett-Price, B.A.

1985-02-01T23:59:59.000Z

220

Assessment of gas-side fouling in cement plants  

SciTech Connect (OSTI)

The purpose of this study is to provide an assessment of gas-side fouling in cement plants with special emphasis on heat recovery applications. Exhaust gases in the cement industry which are suitable for heat recovery range in temperature from about 400 to 1300 K, are generally dusty, may be highly abrasive, and are often heavily laden with alkalies, sulfates, and chlorides. Particulates in the exhaust streams range in size from molecular to about 100 ..mu..m in diameter and come from both the raw feed as well as the ash in the coal which is the primary fuel used in the cement industry. The major types of heat-transfer equipment used in the cement industry include preheaters, gas-to-air heat exchangers, waste heat boilers, and clinker coolers. The most important gas-side fouling mechanisms in the cement industry are those due to particulate, chemical reaction, and corrosion fouling. Particulate transport mechanisms which appear to be of greatest importance include laminar and turbulent mass transfer, thermophoresis, electrophoresis, and inertial impaction. Chemical reaction mechanisms of particular importance include the deposition of alkali sulfates, alkali chlorides, spurrite, calcium carbonate, and calcium sulfate. At sufficiently low temperatures, sulfuric acid and water can condense on heat exchanger surfaces which can cause corrosion and also attract particulates in the flow. The deleterious effects of gas-side fouling in cement plants are due to: (1) increased capital costs; (2) increased maintenance costs; (3) loss of production; and (4) energy losses. A conservative order-of-magnitude analysis shows that the cost of gas-side fouling in US cement plants is $0.24 billion annually.

Marner, W.J.

1982-09-01T23:59:59.000Z

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


221

Intelligent Transportation Systems: Saving Lives, Time and Money Portland State University  

E-Print Network [OSTI]

Intelligent Transportation Systems: Saving Lives, Time and Money Portland State University Oct 14, 2009 #12;Intelligent Transportation Systems: Saving Lives, Time and Money James Whiteneck #12;Intelligent Transportation Systems: Saving Lives, Time and Money Portal archives a large amount of data Over

Bertini, Robert L.

222

n a recent TEDx talk she gave before a Portland audience, microbiologist  

E-Print Network [OSTI]

), Brown is an expert in sustainable buildings. His involvement ensures that the discoveries made test sites like the UO's sustainably built Lundquist College of Business and a Portland hospital other, with humans, and with their environment. "Buildings are complex ecosystems that are an important

Oregon, University of

223

Portland State University Graduate School of Education Research unit Futures Project: Preparing Special Educators to Use  

E-Print Network [OSTI]

Portland State University Graduate School of Education Research unit Futures Project: Preparing's degree, graduates will participate in an on-going, Futures Project Collaborative Learning Community: falcor@pdx.edu Purpose: The Futures Project prepares 60 highly qualified special educators at the master

224

BEST IN THE WEST Portland State University is one of the best colleges and universi-  

E-Print Network [OSTI]

Syracuse University University of CaliforniaSanta Cruz University of Maryland University of Michigan University of Michigan University of Notre Dame University of Pennsylvania Partial liBEST IN THE WEST Portland State University is one of the best colleges and universi- ties

Bertini, Robert L.

225

USING ARCHIVED ITS DATA FOR ANALYSIS OF INCIDENTS ON THE PORTLAND, OREGON FREEWAY SYSTEM  

E-Print Network [OSTI]

this project and during my graduate program at Portland State University. My sincere gratitude goes Potter and Mike Rose for their assistance with the project. In addition, I would also like to thank that relate to traffic volumes and weather. In a more detailed analysis, the cost of incidents, in terms

Bertini, Robert L.

226

Portland, Oregon: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE)  

Broader source: Energy.gov [DOE]

This brochure provides an overview of the challenges and successes of Portland, OR, a 2007 Solar America City awardee, on the path toward becoming a solar-powered community. Accomplishments, case studies, key lessons learned, and local resource information are given.

227

An Exploration of Bicycle-Motor Vehicle Crash Types and Causes in Portland-Metro, Oregon  

E-Print Network [OSTI]

An Exploration of Bicycle-Motor Vehicle Crash Types and Causes in Portland-Metro, Oregon by Kouros. This research project investigates ways to improve traffic safety, focusing specifically on bicycle- motor of BMV crashes resulted in fatal injury and 127 of resulted in incapacitating injury. Each bicycle crash

Bertini, Robert L.

228

A Review of Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

and Resource Saving Technologies in Cement Industry.1:8794. Blue World Crete. 2012. Technology. Available atOakey. 2009. CO 2 Capture Technologies for Cement Industry.

Hasanbeigi, Ali

2014-01-01T23:59:59.000Z

229

NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration  

E-Print Network [OSTI]

NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration and Microstructure Development Modeling Package. Version 3.0 Dale P. Bentz #12;NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration

Bentz, Dale P.

230

Potential Energy Savings and CO2 Emissions Reduction of China's Cement Industry  

E-Print Network [OSTI]

production instantly reaches the current world best practice energyworld best practice and implement aggressive energy efficiency and carbon reduction measures in all cement productionenergy intensity of Chinas cement production would reach current world

Ke, Jing

2013-01-01T23:59:59.000Z

231

Nano-ChemoMechanical assessment of Rice Husk Ash cement by wavelength dispersive spectroscopy and nanoindentation  

E-Print Network [OSTI]

Cement global production stands at 3 Giga tons making concrete the most consumed structural mateial worldwide. This massively produced material comes with a heavy environmental footprint rendering the cement industry ...

Abuhaikal, Muhannad (Muhannad A. R.)

2011-01-01T23:59:59.000Z

232

Unprocessed rice husk ash as a partial replacement of cement for low-cost concrete  

E-Print Network [OSTI]

Cement is a very valuable commodity as it can be used to construct structurally sound buildings and infrastructure. However, in many developing countries cement is expensive due to the unavailability of local resources to ...

Brown, Dorothy Kamilah

2012-01-01T23:59:59.000Z

233

Potential Energy Savings and CO2 Emissions Reduction of China's Cement Industry  

E-Print Network [OSTI]

2050 China Energy and CO2 Emissions Report. Science Press,Energy Savings and CO2 Emissions Reduction of Chinas CementEnergy Savings and CO2 Emissions Reduction of Chinas Cement

Ke, Jing

2013-01-01T23:59:59.000Z

234

Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

of granulated blast furnace slag and its effect on theblast furnace slag in cement results from the combined effects

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

235

Downhole cement test in a very hot hole  

SciTech Connect (OSTI)

Completion of the commercial-sized Hot Dry Rock Geothermal Energy Project requires that hydraulic fractures be created between two inclined wellbores at a depth of about 4 km (15,000 ft). Isolation of a section of the open wellbore is necessary for pressurization to achieve the fracture connections. A cemented-in liner/PBR assembly is one of the methods used for zone isolation near the botton of the injection well. A downhole, pumped cement test was first conducted at a wellbore temperature of 275/sup 0/C (525/sup 0/F) to determine if a suitable slurry could be designed, pumped, and later recovered to assure the success of the cemented-in liner operation.

Pettitt, R.A.; Cocks, G.G.; Dreesen, D.N.; Sims, J.R.; Nicholson, R.W.; Boevers, B.

1982-01-01T23:59:59.000Z

236

Virtual Cement and Concrete Testing Laboratory Educational Version 2.0 User Guide  

E-Print Network [OSTI]

1 Virtual Cement and Concrete Testing Laboratory Educational Version 2.0 User Guide Jeffrey W of the Virtual Cement and Concrete Testing Laboratory (VCCTL) software, version 2.0. Using the VCCTL software, cement hydration, computer modeling, concrete testing, microstructure, simulation, virtual laboratory

Magee, Joseph W.

237

Sulfur dioxide oxidation and plume formation at cement kilns  

SciTech Connect (OSTI)

Results of source sampling at the Glens Falls cement kiln in Glens Falls, N.Y., are reported for sulfur oxides, ammonia, hydrochloric acid, oxygen, and moisture content. The origin of a detached, high-opacity, persistent plume originating from the cement kiln stack is investigated. It is proposed that this plume is due to ammonium salts of SOx and sulfuric acid that have been formed in condensed water droplets in the plume by the pseudocatalytic action of ammonia. (1 diagram, 1 graph, 22 references, 7 tables)

Dellinger, B.; Grotecloss, G.; Fortune, C.R.; Cheney, J.L.; Homolya, J.B.

1980-10-01T23:59:59.000Z

238

Computational studies of two-phase cement-CO2-brine interaction in wellbore environments  

SciTech Connect (OSTI)

Wellbore integrity is essential to ensuring long-term isolation of buoyant supercritical CO{sub 2} during geologic sequestration of CO{sub 2}. In this report, we summarize recent progress in numerical simulations of cement-brine-CO{sub 2} interactions with respect to migration of CO{sub 2} outside of casing. Using typical values for the hydrologic properties of cement, caprock (shale) and reservoir materials, we show that the capillary properties of good quality cement will prevent flow of CO{sub 2} into and through cement. Rather, CO{sub 2}, if present, is likely to be confined to the casing-cement or cement-formation interfaces. CO{sub 2} does react with the cement by diffusion from the interface into the cement, in which case it produces distinct carbonation fronts within the cement. This is consistent with observations of cement performance at the CO{sub 2}-enhanced oil recovery SACROC Unit in West Texas (Carey et al. 2007). For poor quality cement, flow through cement may occur and would produce a pattern of uniform carbonation without reaction fronts. We also consider an alternative explanation for cement carbonation reactions as due to CO{sub 2} derived from caprock. We show that carbonation reactions in cement are limited to surficial reactions when CO{sub 2} pressure is low (< 10 bars) as might be expected in many caprock environments. For the case of caprock overlying natural CO{sub 2} reservoirs for millions of years, we consider Scherer and Huet's (2009) hypothesis of diffusive steady-state between CO{sub 2} in the reservoir and in the caprock. We find that in this case, the aqueous CO{sub 2} concentration would differ little from the reservoir and would be expected to produce carbonation reaction fronts in cements that are relatively uniform as a function of depth.

Carey, James William [Los Alamos National Laboratory; Lichtner, Peter C [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

239

Hydromania II: Journey of the Oncorhynchus. Summer Science Camp Curriculum 1994.  

SciTech Connect (OSTI)

The Hydromania II curriculum was written for the third in a series of summer science camp experiences targeting students in grades 4--6 who generally have difficulty accessing supplementary academic programs. The summer science camp in Portland is a collaborative effort between Bonneville Power Administration (BPA), the US Department of Energy (DOE), and the Portland Parks and Recreation Community Schools Program along with various other cooperating businesses and organizations. The curriculum has also been incorporated into other summer programs and has been used by teachers to supplement classroom activities. Camps are designed to make available, affordable learning experiences that are fun and motivating to students for the study of science and math. Inner-city, under-represented minorities, rural, and low-income families are particularly encouraged to enroll their children in the program.

Moura, Joan; Swerin, Rod

1995-01-01T23:59:59.000Z

240

Development of Bulk Nanocrystalline Cemented Tungsten Carbide for Industrial Applicaitons  

SciTech Connect (OSTI)

This report contains detailed information of the research program entitled "Development of Bulk Nanocrystalline Cemented Tungsten Carbide Materials for Industrial Applications". The report include the processes that were developed for producing nanosized WC/Co composite powders, and an ultrahigh pressure rapid hot consolidation process for sintering of nanosized powders. The mechanical properties of consolidated materials using the nanosized powders are also reported.

Z. Zak Fang, H. Y. Sohn

2009-03-10T23:59:59.000Z

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


241

Automated Assessment of Polyethylene Wear in Cemented Acetabular Components using  

E-Print Network [OSTI]

Automated Assessment of Polyethylene Wear in Cemented Acetabular Components using Anteroposterior, Ninewells Hospital, Dundee, DD1 9SY, UK Abstract Polyethylene wear in the acetabular components of hip to the polyethylene acetabular component of a prosthesis so that both it and the metal femoral head component can

St Andrews, University of

242

India's cement industry: Productivity, energy efficiency and carbon emissions  

SciTech Connect (OSTI)

Historical estimates of productivity growth in India's cement sector vary from indicating an improvement to a decline in the sector's productivity. The variance may be traced to the time period of study, source of data for analysis, and type of indices and econometric specifications used for reporting productivity growth. Analysis shows that in the twenty year period, 1973 to 1993, productivity in the aluminum sector increased by 0.8% per annum. An econometric analysis reveals that technical progress in India's cement sector has been biased towards the use of energy and capital, while it has been material and labor saving. The increase in productivity was mainly driven by a period of progress between 1983 and 1991 following partial decontrol of the cement sector in 1982. The authors examine the current changes in structure and energy efficiency in the sector. Their analysis shows that the Indian cement sector is moving towards world-best technology, which will result in fewer carbon emissions and more efficient energy use. However, substantial further energy savings and carbon reduction potentials still exist.

Schumacher, Katja; Sathaye, Jayant

1999-07-01T23:59:59.000Z

243

Surface effects of cement-based solidified waste forms  

E-Print Network [OSTI]

This study was performed in order to determine-nine if the surface characteristics of cement-based waste forms were different than those of the bulk material. This was done as a prelude to the potential development of an accelerated leach test...

Pavlonnis, George

1998-01-01T23:59:59.000Z

244

Regional distribution of diagenetic carbonate cement in Palaeocene deepwater  

E-Print Network [OSTI]

0QF, UK (Received 9 June 1998; revised 15 March 1999) ABSTRACT: Sandstones of the Palaeocene al., 1993), and by inorganic thermal breakdown of organic material at depths >1.5 km (Irwin et al., 1977). Within the Rannoch Formation of the Brent Group, sandstones contain >5% carbonate cement

Haszeldine, Stuart

245

Study of composite cement containing burned oil shale  

E-Print Network [OSTI]

Study of composite cement containing burned oil shale Julien Ston Supervisors : Prof. Karen properties. SCMs can be by-products from various industries or of natural origin, such as shale. Oil shale correctly, give a material with some cementitious properties known as burned oil shale (BOS). This study

Dalang, Robert C.

246

More durable roof coverings such as steel and fiber cement  

E-Print Network [OSTI]

- heating equipment saves money. Tankless water heaters provide hot water on demand at a preset temperature- cement siding is termite- and water-resistant and warrantied to last 50 years. Increasing the amount natural daylighting. Xeriscaping, or using native plants, significantly reduces the need for watering

247

Demonstration Assessment of Light Emitting Diode (LED) Commercial Garage Lights In the Providence Portland Medical Center, Portland, Oregon  

SciTech Connect (OSTI)

This U.S. Department of Energy GATEWAY Demonstration project studied the applicability of light-emitting diode (LED) luminaires for commercial parking garage applications. High-pressure sodium (HPS) area luminaires were replaced with new LED area luminaires. The project was supported under the U.S. Department of Energy (DOE) Solid State Lighting Program. Other participants in the demonstration project included Providence Portland Medical Center in Portland, Oregon, the Energy Trust of Oregon, and Lighting Sciences Group (LSG) Inc. Pacific Northwest National Laboratory (PNNL) conducted the measurements and analysis of the results. PNNL manages GATEWAY demonstrations for DOE and represents their perspective in the conduct of the work. Quantitative and qualitative measurements of light and electrical power were taken at the site for both HPS and LED light sources. Economic costs were estimated and garage users responses to the new light sources were gauged with a survey. Six LED luminaires were installed in the below-ground parking level A, replacing six existing 150W HPS lamps spread out over two rows of parking spaces. Illuminance measurements were taken at floor level approximately every 4 ft on a 60-ft x 40-ft grid to measure light output of these LED luminaires which were termed the Version 1 luminaires. PNNL conducted power measurements of the circuit in the garage to which the 6 luminaires were connected and determined that they drew an average of 82 W per lamp. An improved LED luminaire, Version 2, was installed in Level B of the parking garage. Illuminance measurements were not made of this second luminaire on site due to higher traffic conditions, but photometric measurements of this lamp and Version 1 were made in an independent testing laboratory and power usage for Version 2 was also measured. Version 1 was found to produce 3600 lumens and Version 2 was found to produce 4700 lumens of light and to consume 78 Watts. Maximum and minimum light levels were measured for the HPS and LED Version 1 luminaires and projected for the Version 2 luminaires. Maximum light levels were 23.51 foot candles, 20.54 fc, and 26.7 fc respectively and minimum light levels were 1.49 fc, 1.45 fc, and 1.88 fc. These results indicate very similar or even slightly higher light levels produced by the LED lamps, despite the higher lumen output of the HPS lamp. The LED lamps provide higher luminaire efficacy because all of the light is directed down and out. None of it is lost in the fixture. Also the HPS luminaire had poorly designed optics and a plastic covering that tended to get dirty and cracked, further decreasing the realized light output.[is this an accurate way to say this?] Consumer perceptions of the Version 2 LED were collected via a written survey form given to maintenance and security personnel. More than half felt the LED luminaires provided more light than the HPS lamps and a majority expressed a preference for the new lamps when viewing the relamped area through a security camera. Respondents commented that the LED luminaires were less glary, created less shadows, had a positive impact on visibility, and improved the overall appearance of the area. PNNL conducted an economic analysis and found that the Version 1 lamp produced annual energy savings of 955 kWh and energy cost savings of $76.39 per lamp at electricity rates of 6.5 cents per kWh and $105.03 at 11 cents per kWh. PNNL found that the Version 2 lamp produced annual energy savings of 991 kWh and energy cost savings of $79.26 per lamp at electricity rates of 6.5 cents per kWh and $108.98 at 11 cents per kWh. PNNL also calculated simple payback and found that Version 1 showed paybacks of 5.4 yrs at 6.5c/kWh and 4.1 yrs at 11c/kWh while Version 2 showed paybacks of 5.2 yrs at 6.5c/kWh and 3.9 yrs at 11c/kWh.

Ton, My K.; Richman, Eric E.; Gilbride, Theresa L.

2008-11-11T23:59:59.000Z

248

SYNCHROTRON X-RAY MICROTOMOGRAPHY, ELECTRON PROBE MICROANALYSIS, AND NMR OF TOLUENE WASTE IN CEMENT.  

SciTech Connect (OSTI)

Synchrotron X-ray microtomography shows vesicular structures for toluene/cement mixtures, prepared with 1.22 to 3.58 wt% toluene. Three-dimensional imaging of the cured samples shows spherical vesicles, with diameters ranging from 20 to 250 {micro}m; a search with EPMA for vesicles in the range of 1-20 {micro}m proved negative. However, the total vesicle volume, as computed from the microtomography images, accounts for less than 10% of initial toluene. Since the cements were cured in sealed bottles, the larger portion of toluene must be dispersed within the cement matrix. Evidence for toluene in the cement matrix comes from {sup 29}Si MAS NMR spectroscopy, which shows a reduction in chain silicates with added toluene. Also, {sup 2}H NMR of d{sub 8}-toluene/cement samples shows high mobility for all, toluene and thus no toluene/cement binding. A model that accounts for all observations follows: For loadings below about 3 wt%, most toluene is dispersed in the cement matrix, with a small fraction of the initial toluene phase separating from the cement paste and forming vesicular structures that are preserved in the cured cement. Furthermore, at loadings above 3 wt%, the abundance of vesicles formed during toluene/cement paste mixing leads to macroscopic phase separation (most toluene floats to the surface of the cement paste).

BUTLER,L.G.

1999-07-22T23:59:59.000Z

249

Sponsors of CIEEDAC: Natural Resources Canada, Canadian Industry Program for Energy Conservation, Aluminium Industry Association, Canadian Petroleum Products Institute, Canadian Portland Cement Association, Canadian Pulp  

E-Print Network [OSTI]

of REGIONAL TRENDS IN INDUSTRIAL GREENHOUSE GAS EMISSIONS, 1990 - 1996 in Canada Prepared for EnvironmentSponsors of CIEEDAC: Natural Resources Canada, Canadian Industry Program for Energy Conservation. Not for Quotation GHG Emissions, 1990 - 1996 CIEEDAC i March, 2001 Analysis of Regional Trends in Industrial

250

High-volume natural volcanic pozzolan and limestone powder as partial replacements for portland cement in self-compacting and sustainable concrete  

E-Print Network [OSTI]

the resulting self-compacting concrete (SCC). Petrographicity, which satisfy self-compacting concrete criteria withoutcement in self-compacting and sustainable concrete K. Celik

2014-01-01T23:59:59.000Z

251

Ghabezloo et al.: Poromechanical behaviour of hardened cement paste under isotropic loading Poromechanical behaviour of hardened cement paste  

E-Print Network [OSTI]

of the material is described in the framework of the mechanics of porous media. The poroelastic parameters the framework of the theory of porous media. Keywords: hardened cement paste, poromechanics, effective stress and Concrete Research, DOI 10.1016/j.cemconres.2008.06.007 * Corresponding Author : CERMES, Ecole Nationale des

Boyer, Edmond

252

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

Owned Utilities, Popoff, Phillip, Puget Sound Energy Sims, Brett, Portland General Electric Hines, John, Portland General Electric Bushnell, John, Northwestern Drennan, Ted, PacifiCorp Kalich, Clint, Avista Noll Members: Co-Chairs Karier, Tom, Council Member, Washington Pendergrass, Rick, Bonneville Power Investor

253

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

Investor Owned Utilities, Popoff, Phillip, Puget Sound Energy Sims, Brett, Portland General Electric Hines, Villamor, Puget Sound Energy Brown, Stefan, Portland General Electric Bushnell, John, Northwestern Drennan Members: Co-Chairs Karier, Tom, Council Member, Washington Gendron, Mark, Bonneville Power Administration

254

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

nationally recognized Blue SkySM Green-e Energy Certified renewable energy program provides an easy Avista 7 95 102 Northwestern Energy 351 351 Portland General Electric 14 14 Puget Sound Energy 44 44 ID 382 714 1,096 Northwestern Energy 733 733 Portland General Electric 2,403 2,403 Puget Sound Energy 2

255

Opportunities for Energy Efficiency and Demand Response in the California Cement Industry  

SciTech Connect (OSTI)

This study examines the characteristics of cement plants and their ability to shed or shift load to participate in demand response (DR). Relevant factors investigated include the various equipment and processes used to make cement, the operational limitations cement plants are subject to, and the quantities and sources of energy used in the cement-making process. Opportunities for energy efficiency improvements are also reviewed. The results suggest that cement plants are good candidates for DR participation. The cement industry consumes over 400 trillion Btu of energy annually in the United States, and consumes over 150 MW of electricity in California alone. The chemical reactions required to make cement occur only in the cement kiln, and intermediate products are routinely stored between processing stages without negative effects. Cement plants also operate continuously for months at a time between shutdowns, allowing flexibility in operational scheduling. In addition, several examples of cement plants altering their electricity consumption based on utility incentives are discussed. Further study is needed to determine the practical potential for automated demand response (Auto-DR) and to investigate the magnitude and shape of achievable sheds and shifts.

Olsen, Daniel; Goli, Sasank; Faulkner, David; McKane, Aimee

2010-12-22T23:59:59.000Z

256

Scanning probe microscopy: Sulfate minerals in scales and cements  

SciTech Connect (OSTI)

The principles of scanning probe microscopy (SPM) are illustrated with examples from oilfield mineralogy, particularly emphasizing sulfate minerals involved in scale formation and cement hydration chemistry. The topography of the (010) cleavage surface of gypsum observed by atomic force microscopy shows atomically flat terraces separated by shallow steps often only one unit cell high. SPM allows direct observation of processes on mineral surfaces while they are in contact with solutions. The dissolution etching and crystal growth of gypsum and barite are discussed and rates of step migration estimated. The orientation of steps is related to the crystallographic axes. The action of phosphonate crystal growth inhibitor on gypsum and of a chelating scale solvent on barite are also shown. The multiphase microstructure of an oilwell cement clinker is described in relation to its hydration chemistry in contact with water and its reaction with sulfate ions.

Hall, C. [Schlumberger Cambridge Research (United Kingdom)

1995-11-01T23:59:59.000Z

257

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

SciTech Connect (OSTI)

China's cement industry, which produced 1,388 million metric tons (Mt) of cement in 2008, accounts for almost half of the world's total cement production. Nearly 40% of China's cement production is from relatively obsolete vertical shaft kiln (VSK) cement plants, with the remainder from more modern rotary kiln cement plants, including plants equipped with new suspension pre-heater and pre-calciner (NSP) kilns. Shandong Province is the largest cement-producing Province in China, producing 10% of China's total cement output in 2008. This report documents an analysis of the potential to improve the energy efficiency of NSP kiln cement plants in Shandong Province. Sixteen NSP kiln cement plants were surveyed regarding their cement production, energy consumption, and current adoption of 34 energy-efficient technologies and measures. Plant energy use was compared to both domestic (Chinese) and international best practice using the Benchmarking and Energy Saving Tool for Cement (BEST-Cement). This benchmarking exercise indicated an average technical potential primary energy savings of 12% would be possible if the surveyed plants operated at domestic best practice levels in terms of energy use per ton of cement produced. Average technical potential primary energy savings of 23% would be realized if the plants operated at international best practice levels. Energy conservation supply curves for both fuel and electricity savings were then constructed for the 16 surveyed plants. Using the bottom-up electricity conservation supply curve model, the cost-effective electricity efficiency potential for the studied cement plants in 2008 is estimated to be 373 gigawatt hours (GWh), which accounts for 16% of total electricity use in the 16 surveyed cement plants in 2008. Total technical electricity-saving potential is 915 GWh, which accounts for 40% of total electricity use in the studied plants in 2008. The fuel conservation supply curve model shows the total technical fuel efficiency potential equal to 7,949 terajoules (TJ), accounting for 8% of total fuel used in the studied cement plants in 2008. All the fuel efficiency potential is shown to be cost effective. Carbon dioxide (CO{sub 2}) emission reduction potential associated with cost-effective electricity saving is 383 kiloton (kt) CO{sub 2}, while total technical potential for CO{sub 2} emission reduction from electricity-saving is 940 ktCO{sub 2}. The CO{sub 2} emission reduction potentials associated with fuel-saving potentials is 950 ktCO{sub 2}.

Price, Lynn; Hasanbeigi, Ali; Lu, Hongyou; Wang, Lan

2009-10-01T23:59:59.000Z

258

Extension and replacement of aspalt cement with sulphur  

E-Print Network [OSTI]

material containing bitumen, sulphur, and mineral matter such as sand, rock, road metal and clinker (41). He recommended preparing the mixture in hot mix plants, and completely filling the voids between aggregate particles with sulphur-asphalt binder... Selection . Aggregate Selection Selection of Asphalt Cement and Sulphur Content 10 13 20 23 23 26 27 28 28 28 33 44 PAGE Selection of Moisture Condition and Compaction Effort . 45 Processing of Sulphur-Asphalt Emulsion (SAE) Binders...

Pickett, Daniel Ernest

1977-01-01T23:59:59.000Z

259

Polymer-cement geothermal-well-completion materials. Final report  

SciTech Connect (OSTI)

A program to develop high-temperature polymer cements was performed. Several formulations based on organic and semi-inorganic binders were evaluated on the basis of mechanical and thermal stability, and thickening time. Two optimized systems exhibited properties exceeding those required for use in geothermal wells. Both systems were selected for continued evaluation at the National Bureau of Standards and contingent upon the results, for field testing in geothermal wells.

Zeldin, A.N.; Kukacka, L.E.

1980-07-01T23:59:59.000Z

260

Potential Energy Savings and CO2 Emissions Reduction of China's Cement Industry  

E-Print Network [OSTI]

dioxide (CO2) emissions from fossil fuel combustion, as wellCO2 emissions (including cement process and fossil fuel combustion

Ke, Jing

2013-01-01T23:59:59.000Z

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


261

Microsoft Word - NETL-TRS-2-2013_Foamed Cement_20140124.docx  

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

Ultimately, this research will provide industry the knowledge to ensure long-term well integrity and safe operation of wells in which foamed cements are used. Computed...

262

E-Print Network 3.0 - ash blended cement Sample Search Results  

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

CLSM mixture utilized... . CHARACTERIZATION AND APPLICATION OF CLASS F FLY ASH AND CLEAN-COAL ASH FOR CEMENT-BASED MATERIALS 2 The major... investigation. Two additional ash ......

263

Policy Options for Encouraging Energy Efficiency Best Practices in Shandong Province's Cement Industry  

E-Print Network [OSTI]

Azure. Alternative Fuel Use in the Cement Sector in ShandongAlternative fuels ..6 Resource potential for alternative fuel use in Shandong

Price, Lynn

2013-01-01T23:59:59.000Z

264

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

Sustainable Development waste heat recovery World Wide FundTaishan Cement Works Waste Heat Recovery and Utilisation forPlants Low Temperature Waste Heat Power Generation Project.

Price, Lynn

2010-01-01T23:59:59.000Z

265

Potential Energy Savings and CO2 Emissions Reduction of China's Cement Industry  

E-Print Network [OSTI]

report of cement industry waste heat power generation. ChinaWorrell et al. , 2001). Waste heat recovery (WHR) poweradoption and utilization of waste heat recovery (WHR) power

Ke, Jing

2013-01-01T23:59:59.000Z

266

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

Banerjee, R. , 2005. Energy Efficiency and Demand SideKiln Systems, Energy Efficiency in the Cement Industry (Ed.for Improving Energy Efficiency, Reducing Pollution and

Price, Lynn

2010-01-01T23:59:59.000Z

267

Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

2010. Cement and concrete nanoscience and nanotechnology.of 100 Percent Fly Ash Concrete. 2005 World of Coal Ash (carbon dioxide in precast concrete. TECHNOLOGY REVIEW A

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

268

Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

cement industry Oxygen enrichment technology Post-combustionOther Benefits: ? Oxygen enrichment technology reduces fuelprocess. Oxy-fuel technology uses oxygen instead of air in

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

269

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

of Demonstrated Energy Technologies (CADDET), Internationaland MAIN. 1993. Energy Technology in the Cement IndustrialAugust 19, 2009. Energy Technology Support Unit (ETSU).

Price, Lynn

2010-01-01T23:59:59.000Z

270

Estimation of CO2 Emissions from China's Cement Production: Methodologies and Uncertainties  

E-Print Network [OSTI]

L. , 2006. Discussion of CO2 emission reduction in ChineseFurther discussion of CO2 emission reduction in Chinesecalculation method of CO2 emissions of cement production.

Ke, Jing

2014-01-01T23:59:59.000Z

271

Quantifying the Co-benefits of Energy-Efficiency Programs: A Case Study of the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

ingredient in cement: vertical shaft kilns and rotary kilns.cement was produced by plants using outdated vertical shaft kilns (Vertical shaft kilns (Mt) Rotary (NSP + other) kilns (Mt) Clinker production (Mt) Clinker-cement

Hasanbeigi, Ali

2014-01-01T23:59:59.000Z

272

An investigation of the creep phenomena exhibited by Solenhofen limestone, halite, and cement under medium confining pressures  

E-Print Network [OSTI]

SHORT-T II" 1' - T IN F I GURE 5. CONF INED SHORT-T IME T'- ' T IN vROGR. 8 26 F IGURE 6 F IGURE 7 CREEP TESTS IN PROG+' b~, SH' ~tNG AUXILIARY LOADING DEViCi FA I LURE OF SOLENHOF t N L I I'tc STONc SPECIMENS 2'7 JO FIGURE 8. FAILURE OF CEMENT... IN 19/7 ON ROCK SALT& AND BY 12 LAYS LIBRARY A BIB COLLEGE OF TEXAS IN 19/6~ GR I GGS DEFORMED L I MESTONE UNDER CONF I N ING 1 PRESSURES UP TO 13 F000 ATMOSPHERES ~ HE SHOWED THAT WHEN THE SPECIMENS WERE JACKETED' SO THAT THE KEROSENE (USED...

Kendall, Halcombe Augustus

1958-01-01T23:59:59.000Z

273

Energy Efficiency Improvement and Cost Saving Opportunities for Cement Making. An ENERGY STAR Guide for Energy and Plant Managers  

E-Print Network [OSTI]

B. , 1990. Utilisation of Waste Heat from the Cement RotaryAdvanced Concepts of Waste Heat Recovery in Cement Plantsa roller mill. Utilizing waste heat from the kiln exhaust,

Worrell, Ernst

2008-01-01T23:59:59.000Z

274

In cooperation with the Oregon Department of Transportation (ODOT) and other regional partners, the Portland regional intelligent trans-  

E-Print Network [OSTI]

to improve travel demand forecasts for the Portland region. The data archive will expand to include transit for intelligent transportation systems (ITSs) refers to the systematic retention and reuse of operational ITS data collection of data, and a better understanding of variability in system performance and response can

Bertini, Robert L.

275

Developing a Strategy for Reducing the Impact of Driving Under the Influence of Intoxicants in Portland, Oregon  

E-Print Network [OSTI]

Safety Partnership (CSTSP) in response to the strong public demand for services that protect more familiar with national best practices to reduce impaired driving. Objective The purpose-related crashes in Portland. The research intent was also to highlight best practices as found in the literature

Bertini, Robert L.

276

In Shock Compression of Condensed Matter-2003, Ed. M. Furnish, Portland, OR, 2003. A NEW H2O ICE HUGONIOT  

E-Print Network [OSTI]

. Collisions on icy planetary bodies produce impact melt water, redistribute ground ice, and deposit thermalIn Shock Compression of Condensed Matter-2003, Ed. M. Furnish, Portland, OR, 2003. 1 A NEW H2O ICE the onset of phase transformations on the ice Hugoniot, and consequently, the criteria for shock melting

Stewart, Sarah T.

277

Commerical-Scale CO2 Capture and Sequestration for the Cement Industry  

SciTech Connect (OSTI)

On June 8, 2009, DOE issued Funding Opportunity Announcement (FOA) Number DE-FOA-000015 seeking proposals to capture and sequester carbon dioxide from industrial sources. This FOA called for what was essentially a two-tier selection process. A number of projects would receive awards to conduct front-end engineering and design (FEED) studies as Phase I. Those project sponsors selected would be required to apply for Phase II, which would be the full design, construction, and operation of their proposed technology. Over forty proposals were received, and ten were awarded Phase I Cooperative Agreements. One of those proposers was CEMEX. CEMEX proposed to capture and sequester carbon dioxide (CO2) from one of their existing cement plants and either sequester the CO2 in a geologic formation or use it for enhanced oil recovery. The project consisted of evaluating their plants to identify the plant best suited for the demonstration, identify the best available capture technology, and prepare a design basis. The project also included evaluation of the storage or sequestration options in the vicinity of the selected plant.

Adolfo Garza

2010-07-28T23:59:59.000Z

278

Sulfur polymer cement for macroencapsulation of mixed waste debris  

SciTech Connect (OSTI)

In FY 1997, the US DOE Mixed Waste Focus Area (MWFA) sponsored a demonstration of the macroencapsulation of mixed waste debris using sulfur polymer cement (SPC). Two mixed wastes were tested--a D006 waste comprised of sheets of cadmium and a D008/D009 waste comprised of lead pipes and joints contaminated with mercury. The demonstration was successful in rendering these wastes compliant with Land Disposal Restrictions (LDR), thereby eliminating one Mixed Waste Inventory Report (MWIR) waste stream from the national inventory.

Mattus, C.H.

1998-06-01T23:59:59.000Z

279

Corrosion of Metals in Composite Cements Anthony Setiadi*, J. Hill and N. B. Milestone  

E-Print Network [OSTI]

Corrosion of Metals in Composite Cements Anthony Setiadi*, J. Hill and N. B. Milestone. However, there may be issues regarding the corrosion of some of the metal components which arise from reprocessing and decommissioning due to the alkaline environment in the cement grouts. The corrosion

Sheffield, University of

280

Speciation of heavy metals in cement-stabilized waste forms: A micro-spectroscopic study  

E-Print Network [OSTI]

-ray fluorescence (XRF)) were used to investigate Co and Ni uptake by Hardened Cement Paste (HCP) with the aim. For Ni and Co, XRF mapping revealed a highly heterogeneous element distribution as far Elsevier B.V. All rights reserved. Keywords: Cement; Micro-XAS; Micro-XRF mapping; Ni; Co 1. Introduction

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


281

Carbon 39 (2001) 19952001 Silane-treated carbon fiber for reinforcing cement  

E-Print Network [OSTI]

Carbon 39 (2001) 1995­2001 Silane-treated carbon fiber for reinforcing cement *Yunsheng Xu, D-treated carbon fibers and silane-treated silica fume, relative to the values for cement paste with as-received carbon fibers and as-received silica fume. Silane treatment of fibers and silica fume contributed about

Chung, Deborah D.L.

282

The Effect of Cement Mechanical Properties and Reservoir Compaction on HPHT Well Integrity  

E-Print Network [OSTI]

Cement high- cycle fatigue failure constant B Cement high -cycle fatigue failure constant C Rock internal strength, psi Cr Volumetric solid...-grain compressibility, psi-1 Cbc Volumetric bulk-volume compressibility, psi-1 E Young?s modulus, psi F Critical force, lbf G...

Yuan, Zhaoguang

2012-11-15T23:59:59.000Z

283

Using artificial neural networks to predict the quality and performance of oilfield cements  

SciTech Connect (OSTI)

Inherent batch to batch variability, ageing and contamination are major factors contributing to variability in oilfield cement slurry performance. Of particular concern are problems encountered when a slurry is formulated with one cement sample and used with a batch having different properties. Such variability imposes a heavy burden on performance testing and is often a major factor in operational failure. We describe methods which allow the identification, characterization and prediction of the variability of oilfield cements. Our approach involves predicting cement compositions, particle size distributions and thickening time curves from the diffuse reflectance infrared Fourier transform spectrum of neat cement powders. Predictions make use of artificial neural networks. Slurry formulation thickening times can be predicted with uncertainties of less than {+-}10%. Composition and particle size distributions can be predicted with uncertainties a little greater than measurement error but general trends and differences between cements can be determined reliably. Our research shows that many key cement properties are captured within the Fourier transform infrared spectra of cement powders and can be predicted from these spectra using suitable neural network techniques. Several case studies are given to emphasize the use of these techniques which provide the basis for a valuable quality control tool now finding commercial use in the oilfield.

Coveney, P.V.; Hughes, T.L. [Schlumberger Cambridge Research Ltd., Cambridge (United Kingdom); Fletcher, P. [Schlumberger Dowell, Skene, Aberdeen (United Kingdom)

1996-12-31T23:59:59.000Z

284

Z .Chemical Geology 152 1998 227256 The thermal and cementation histories of a sandstone petroleum  

E-Print Network [OSTI]

Z .Chemical Geology 152 1998 227­256 The thermal and cementation histories of a sandstone petroleum-feldspars recovered at various depths from a deep well drilled through a carbonate-cemented sandstone petroleum of a sandstone petroleum xreservoir, Elk Hills, California. Part 2: In situ oxygen and carbon isotopic results

285

Impact of Hydrated Cement Paste Quality and Entrained Air-Void  

E-Print Network [OSTI]

Impact of Hydrated Cement Paste Quality and Entrained Air-Void System on the Durability of Concrete the characteristics of the entrained air-void system #12;Objectives · Review the current accepted relationship between is affected by the quality of the hydrated cement paste (HCP) and the presence of a properly entrained air

286

Close-in blasting at the TRI-MET light rail tunnels in Portland, Oregon  

SciTech Connect (OSTI)

Frontier/Traylor Joint Venture is presently constructing a section of the Tri-County Metropolitan Transit District of Oregon`s (TRI-MET) Westside Light Rail System. This new section will extend Portland`s existing transit system to the western suburbs of Beaverton and Hillsboro. The drill-blast excavations at this project include 10,000 feet of 20 foot tunnel, 18 cross passages, three shafts, an underground railway station, and a U-wall open cut. From a blast designer`s perspective, this job has been extremely challenging. Blast vibration is limited to 0.5 ips at 200 feet or at the nearest structure, and airblast is limited to 129 dB--linear peak and 96 dB--C scale. The tunnels pass under heavily built up areas and have top of tunnel to surface cover distances as low as 70 feet. Surface blasting in the 26,000 cubic yard U-wall excavation was limited to five short nighttime periods due to its proximity to the very busy highway 26. This paper describes the techniques that were used to develop safe blasting designs for the TRI-MET Surface blasts and tunnel rounds. It also discusses the measures that were necessary to mitigate noise, vibration, and flyrock.

Revey, G.F.; Painter, D.Z.

1995-12-31T23:59:59.000Z

287

Comparative analysis of the life cycle impact assessment of available cement inventories in the EU  

SciTech Connect (OSTI)

Life cycle impact assessment (LCIA) is one of basic steps in life cycle assessment methodology (LCA). This paper presents a comparative study of the LCIA of different life cycle inventories (LCI) for EU cements. The analysis unit used is the manufacture of 1 kg of cement, from 'cradle to gate'. The impact categories considered are those resulting from the manufacture of cement and include greenhouse effects, acidification, eutrophication and summer and winter smog, amongst others. The results of the study highlighted some inconsistencies in existing inventories. As for the LCIA, the main environmental interventions related to cement manufacture were classified and characterised and their effect on different impact categories analysed. Differences observed in evaluation of the impact of cement type were essentially related to their clinker content.

Josa, Alejandro [Technical University of Catalonia (UPC), School of Civil Engineering (ETSECCPB), C/Jordi Girona 1-3 Modul D2/C1, Barcelona 08034 (Spain)]. E-mail: alejandro.josa@upc.edu; Aguado, Antonio [Technical University of Catalonia (UPC), School of Civil Engineering (ETSECCPB), C/Jordi Girona 1-3 Modul D2/C1, Barcelona 08034 (Spain); Cardim, Arnaldo [Civil Engineering Department, Polytechnic School of Penambuco University, Rua Benfica, 455-Madalena, CEP 50.750-410 (Brazil); Byars, Ewan [Centre for Cement and Concrete, Department of Civil and Structural Engineering, University of Sheffield, Sir Frederick Mappin Building, Mappin Street, Sheffield S1 3JD (United Kingdom)

2007-05-15T23:59:59.000Z

288

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

Holter, Flathead Electric Co-op John Morris, Fluid Market Strategies Virginia Harman, Glacier Electric Welker, PECI Dick Adams, PNUCC Lauren Shapton, Portland General Electric Bo Downen, PPC Gurvinder Singh

289

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

Implementation of the Regional Dialogue and Bonneville's reaction to the Portland General Electric v. Bonneville and Golden Northwest Aluminum Co. v. Bonneville decisions that the Ninth Circuit handed down in May of last

290

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

of the Regional Dialogue and Bonneville's reaction to the Portland General Electric v. Bonneville and Golden Northwest Aluminum Co. v. Bonneville decisions that the Ninth Circuit handed down in May of last year have

291

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

, Flathead Electric Co-op Virginia Harman, Glacier Electric Coop Theresa Drake, Idaho Power Company Stacy, Portland General Electric Bo Downen, PPC Gurvinder Singh, Puget Sound Energy Eli Morris, Pacificorp Craig

292

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

Trust, public interest groups, and representatives of state governments and regulators. In addition, Western Montana Generation and Transmission Cooperative Melinda Eden, Northwest Power and Conservation Relations Fred Kiga, Boeing Bill Nicholson, Portland General Electric Sara Patton, NW Energy Coalition Brian

293

Dynamic Evolution of Cement Composition and Transport Properties under Conditions Relevant to Geological Carbon Sequestration  

SciTech Connect (OSTI)

Assessing the possibility of CO{sub 2} leakage is one of the major challenges for geological carbon sequestration. Injected CO{sub 2} can react with wellbore cement, which can potentially change cement composition and transport properties. In this work, we develop a reactive transport model based on experimental observations to understand and predict the property evolution of cement in direct contact with CO{sub 2}-saturated brine under diffusion-controlled conditions. The model reproduced the observed zones of portlandite depletion and calcite formation. Cement alteration is initially fast and slows down at later times. This work also quantified the role of initial cement properties, in particular the ratio of the initial portlandite content to porosity (defined here as ?), in determining the evolution of cement properties. Portlandite-rich cement with large ? values results in a localized sharp reactive diffusive front characterized by calcite precipitation, leading to significant porosity reduction, which eventually clogs the pore space and prevents further acid penetration. Severe degradation occurs at the cementbrine interface with large ? values. This alteration increases effective permeability by orders of magnitude for fluids that preferentially flow through the degraded zone. The significant porosity decrease in the calcite zone also leads to orders of magnitude decrease in effective permeability, where fluids flow through the low-permeability calcite zone. The developed reactive transport model provides a valuable tool to link cementCO{sub 2} reactions with the evolution of porosity and permeability. It can be used to quantify and predict long-term wellbore cement behavior and can facilitate the risk assessment associated with geological CO{sub 2} sequestration.

Brunet, Jean-Patrick Leopold; Li, Li; Karpyn, Zuleima T.; Strazisar, Brian; Bromhal Grant

2013-08-01T23:59:59.000Z

294

Acceptable approaches for beneficial use of cement kiln dust  

SciTech Connect (OSTI)

One beneficial use of cement kiln dust (CKD) is application of CKD to cropland as agricultural lime or fertilizer. However, the EPA has expressed a concern over land application of CKD when the metals constituents in the CKD are above the industry-wide median levels presented in EPA`s Report to Congress on Cement Kiln Dust. Under the Clean Water Act, EPA has established limits for metals concentrations in sewage sludge that is applied to the land for beneficial use of the nitrogen in the sludge. The limits for land application of sewage sludge were established based on the results of exposure risk assessments. A comparison of the median industry-wide metals concentrations in CKD to the metals concentration limits for land application of sewage sludge indicates that all trace metal concentrations IN CKD are below the corresponding sewage sludge land application limit, with the exception of the median level of arsenic from one data set. EPA has determined that land application of CKD with metals concentration limits at or below the industry-wide median concentrations does not pose a significant human cancer or non-cancer health risk. Therefore, with appropriate limits, CKD can be beneficially reused for land application on agricultural land in a manner that is protective of human health and the environment.

Schreiber, R.J.; Smeenk, S.D. [Schreiber, Yonley and Associates, St. Louis, MO (United States)

1998-12-31T23:59:59.000Z

295

Synthesis of belite cement clinker of high hydraulic reactivity  

SciTech Connect (OSTI)

This study is concerned with the increase of the cooling rate of belite clinker, by using the water quenching for the chemical stabilization of reactive belite, which improves the hydraulic properties of this clinker. The addition of adequate mineralizers, as NaF and Fe{sub 2}O{sub 3}, contributes to the improvement of the clinker properties obtained at low burning temperature. X-ray fluorescence spectroscopy, X-ray diffraction analysis and optical microscopy were used to determine the chemical and mineralogical compositions of this clinker. The samples were analyzed by means of a scanning electronic microscope connected with an energy-dispersive X-ray spectrometer to detect the composition of the belite phase and its morphology. Physical and mechanical properties of this clinker cement were determined. The results show that the belite clinker obtained at 1150 {sup o}C, with lime saturation factor 0.67, is characterized by a great hydraulic reactivity, similar to that of the ordinary alite clinker. The addition of 2% of NaF and the water quenching improved the chemical, mineralogical and structural properties, while improving the cement hydraulic properties.

Kacimi, Larbi [Laboratoire de Genie des Procedes, Departement de Chimie, Universite des Sciences et de la Technologie d'Oran, B.P. 1505, El-M'nouar, U.S.T. Oran (Algeria)], E-mail: kacimi20002000@yahoo.fr; Simon-Masseron, Angelique [Laboratoire des Materiaux a Porosite Controlee, CNRS UMR 7016, Universite de Haute-Alsace, 3, rue Alfred-Werner, F-68093 Mulhouse cedex (France)], E-mail: A.Simon@univ-mulhouse.fr; Salem, Souria [Departement d'Architecture, Faculte de Genie Civile, USTO-Oran (Algeria)], E-mail: zinaisalem@yahoo.fr; Ghomari, Abdelhamid [Departement de Chimie, U.A.I.B., Route de Belahcel, Mostaganem (Algeria)], E-mail: belkey@hotmail.com; Derriche, Zoubir [Laboratoire de Genie des Procedes, Departement de Chimie, Universite des Sciences et de la Technologie d'Oran, B.P. 1505, El-M'nouar, U.S.T. Oran (Algeria)

2009-07-15T23:59:59.000Z

296

Demonstration of Mixed Waste Debris Macroencapsulation Using Sulfur Polymer Cement  

SciTech Connect (OSTI)

This report covers work performed during FY 1997 as part of the Evaluation of Sulfur Polymer Cement Fast-Track System Project. The project is in support of the ``Mercury Working Group/Mercury Treatment Demonstrations - Oak Ridge`` and is described in technical task plan (TTP) OR-16MW-61. Macroencapsulation is the treatment technology required for debris by the U.S. Environmental Protection Agency Land Disposal Restrictions (LDR) under the Resource Conservation and Recovery Act. Based upon the results of previous work performed at Oak Ridge, the concept of using sulfur polymer cement (SPC) for this purpose was submitted to the Mixed Waste Focus Area (MWFA). Because of the promising properties of the material, the MWFA accepted this Quick Win project, which was to demonstrate the feasibility of macroencapsulation of actual mixed waste debris stored on the Oak Ridge Reservation. The waste acceptance criteria from Envirocare, Utah, were chosen as a standard for the determination of the final waste form produced. During this demonstration, it was shown that SPC was a good candidate for macroencapsulation of mixed waste debris, especially when the debris pieces were dry. The matrix was found to be quite easy to use and, once the optimum operating conditions were identified, very straightforward to replicate for batch treatment. The demonstration was able to render LDR compliant more than 400 kg of mixed wastes stored at the Oak Ridge National Laboratory.

Mattus, C.H.

1998-07-01T23:59:59.000Z

297

Improved method and composition for immobilization of waste in cement-based material  

DOE Patents [OSTI]

A composition and method for fixation or immobilization of aqueous hazardous waste material in cement-based materials (grout) is disclosed. The amount of drainable water in the cured grout is reduced by the addition of an ionic aluminum compound to either the waste material or the mixture of waste material and dry-solid cement- based material. This reduction in drainable water in the cured grout obviates the need for large, expensive amounts of gelling clays in grout materials and also results in improved consistency and properties of these cement-based waste disposal materials.

Tallent, O.K.; Dodson, K.E.; McDaniel, E.W.

1987-10-01T23:59:59.000Z

298

Characterization and modeling of the cemented sediment surrounding the Iulia Felix glass  

SciTech Connect (OSTI)

About 1800 years ago a Roman Corbita sunk off the coast of Italy carrying a barrel of glass cullet to the floor of the Adriatic Sea. Samples of glass cullet and the cemented surrounding sediment have been characterized and the reaction between the glass and the sea water saturated with respect to calcite and dolomite has been modeled. Results from characterization and modeling show that the cement phase surrounding the sediment grains is a high-Mg calcite. The origin of the cement phase is likely the reaction between the glass and the sea water to from a Mg-silicate, here modeled as sepiolite.

Strachan, Denis M.; Crum, Jarrod V.; Ryan, Joseph V.; Silvestri, Alberta

2014-02-28T23:59:59.000Z

299

Carbon dioxide capture from a cement manufacturing process  

DOE Patents [OSTI]

A process of manufacturing cement clinker is provided in which a clean supply of CO.sub.2 gas may be captured. The process also involves using an open loop conversion of CaO/MgO from a calciner to capture CO.sub.2 from combustion flue gases thereby forming CaCO.sub.3/CaMg(CO.sub.3).sub.2. The CaCO.sub.3/CaMg(CO.sub.3).sub.2 is then returned to the calciner where CO.sub.2 gas is evolved. The evolved CO.sub.2 gas, along with other evolved CO.sub.2 gases from the calciner are removed from the calciner. The reactants (CaO/MgO) are feed to a high temperature calciner for control of the clinker production composition.

Blount, Gerald C. (North Augusta, SC); Falta, Ronald W. (Seneca, SC); Siddall, Alvin A. (Aiken, SC)

2011-07-12T23:59:59.000Z

300

Photosystem II  

ScienceCinema (OSTI)

James Barber, Ernst Chain Professor of Biochemistry at Imperial College, London, gives a BSA Distinguished Lecture titled, "The Structure and Function of Photosystem II: The Water-Splitting Enzyme of Photosynthesis."

James Barber

2010-09-01T23:59:59.000Z

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


301

E-modulus evolution and its relation to solids formation of pastes from commercial cements  

SciTech Connect (OSTI)

Models for early age E-modulus evolution of cement pastes are available in the literature, but their validation is limited. This paper provides correlated measurements of early age evolution of E-modulus and hydration of pastes from five commercial cements differing in limestone content. A recently developed methodology allowed continuous monitoring of E-modulus from the time of casting. The methodology is a variant of classic resonant frequency methods, which are based on determination of the first resonant frequency of a composite beam containing the material. The hydration kinetics - and thus the rate of formation of solids - was determined using chemical shrinkage measurements. For the cements studied similar relationships between E-modulus and chemical shrinkage were observed for comparable water-to-binder ratio. For commercial cements it is suggested to model the E-modulus evolution based on the amount of binder reacted, instead of the degree of hydration.

Maia, Lino, E-mail: lino.maia@fe.up.pt [LABEST - Laboratory for the Concrete Technology and Structural Behaviour, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal); Centro de Ciencias Exatas e da Engenharia, Universidade da Madeira, Campus Universitario da Penteada, 9020-105 Funchal (Portugal); Azenha, Miguel, E-mail: miguel.azenha@civil.uminho.pt [ISISE - Institute for Sustainability and Innovation in Structural Engineering, Universidade do Minho, Escola de Engenharia, Campus de Azurem, 4800-058 Guimaraes (Portugal); Geiker, Mette, E-mail: mge@byg.dtu.dk [DTU - Department of Civil Engineering, Technical University of Denmark, Brovej, Building 118, DK-2800 Kgs. Lyngby (Denmark); NTNU - Department of Structural Engineering, Norwegian University of Science and Technology, Rich. Birkelandsvei 1A, 7491 Trondheim (Norway); Figueiras, Joaquim, E-mail: jafig@fe.up.pt [LABEST - Laboratory for the Concrete Technology and Structural Behaviour, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal)

2012-07-15T23:59:59.000Z

302

Microsoft Word - NETL-TRS-003-2012_Cementing Research Needs_20121207...  

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

of Research Needs Related to Improving Primary Cement Isolation of Formations in Deep Offshore Wells 7 December 2012 Office of Fossil Energy NETL-TRS-3-2012 Disclaimer This report...

303

Effect of spatial variability on the bearing capacity of cement-treated ground  

E-Print Network [OSTI]

This paper presents a reliability assessment for the undrained bearing capacity of a surface strip foundation based on the results of a probabilistic study in which the shear strength and unit weight of cement-treated ...

Kasama, Kiyonobu

304

Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

2 abatement using the calcium looping cycle. Energy Environ.the CO 2 captured by the calcium looping system, use of the16. Flow diagram of calcium-looping CO 2 capture and cement

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

305

Sources of high temperature degradation of cement-based materials : nanoindentation and microporoelastic analysis  

E-Print Network [OSTI]

The effects of high temperature exposure on cement-based materials have been under investigation for quite some time, but a fundamental understanding of the sources of high temperature degradation has been limited by ...

DeJong, Matthew J. (Matthew Justin)

2005-01-01T23:59:59.000Z

306

Synthesis and Characterization of High Temperature Cement-Based Hydroceramic Materials  

E-Print Network [OSTI]

Cement-based materials are of importance in the construction of geothermal wells and high-temperature oil and gas wells. These materials fill the annulus between the well casing and the rock forming a protective layer, ...

Kyritsis, Konstantinos

2009-01-01T23:59:59.000Z

307

Effects of microorganisms growth on the long-term stability of cement and bitumen  

SciTech Connect (OSTI)

Cement is used as a coating matrix for nuclear waste or as an engineered barrier of waste repositories situated in geological formations. The effect of mineral acids excreted by bacteria (Thiobacillus) or organic acids produced by fungi, on the biodegradation of cement is discussed. Organic acids are quantitatively and qualitatively determined during growth of fungi over a two-year period. Even with high pH conditions, pH of the cement {approx} 11, growth of microorganisms occurs. Biodeterioration of cement is expressed in terms of bioleaching velocity of calcium and is observed by electron microscopy. Bitumen is commonly used as a matrix for the long-term storage of radioactive wastes. Long-term biodegrability of bitumen is discussed as a function of its chemical composition and various studied microorganisms.

Libert, M.F.; Sellier, R.; Jouquet, G.; Trescinski, M.; Spor, H. [Nuclear Research Center of Cadarache, St.Paul-Lez-Durance (France)

1993-12-31T23:59:59.000Z

308

Lattice Boltzmann simulations of the permeability and capillary adsorption of cement model microstructures  

SciTech Connect (OSTI)

The lattice Boltzmann method is used to investigate the permeability of microstructures of cement pastes generated using the numerical models CEMHYD3D (Bentz, 1997) and {mu}IC (Bishnoi and Scrivener, 2009). Results are reported as a function of paste water-to-cement ratio and degree of hydration. The permeability decreases with increasing hydration and decreasing water-to-cement ratio in agreement with experiment. However the permeability is larger than the experimental data recorded using beam bending methods (Vichit-Vadakan and Scherer, 2002). Notwithstanding, the lattice Boltzmann results compare favourably with alternate numerical methods of permeability calculation for cement model microstructures. In addition, we show early results for the liquid/vapour capillary adsorption and desorption isotherms in the same model {mu}IC structures. The broad features of the experimental capillary porosity isotherm are reproduced, although further work is required to adequately parameterise the model.

Zalzale, M. [Laboratory of Construction Materials, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne (Switzerland)] [Laboratory of Construction Materials, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne (Switzerland); McDonald, P.J., E-mail: p.mcdonald@surrey.ac.uk [Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH (United Kingdom)

2012-12-15T23:59:59.000Z

309

E-Print Network 3.0 - antibiotic-loaded cement spacers Sample...  

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

in this study. Sealed Reference Sample Sample Cement Paste 10 mm 10 mm 11.5mm 8mm Plastic Spacers 5 mm... based on Stokes equation actually suggests that some of the...

310

Detecting and modeling cement failure in high pressure/ high temperature wells using finite-element method  

E-Print Network [OSTI]

conditions and are investigated simultaneously to more accurately predict cement failure. The results of this study show the relevant dependency of stress principles with temperature and pressure. These results clarify the deformation caused by any...

Shahri, Mehdi Abbaszadeh

2006-04-12T23:59:59.000Z

311

Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

Hilger, J. 2003. Combined Utilization of Oil Shale Energyand Oil Shale Minerals within the Production of Cement andOther Hydraulic Minerals. Oil Shale, Vol. 20, No. 3, pp.

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

312

Grinding of cement clinkers : linking multi-scale fracture properties to system chemistry, mineralogy and microstructure  

E-Print Network [OSTI]

Growing environmental concerns encourage the cement industry to improve its environmental performance, which in turn renews the interest in clinker grinding efficiency. Current knowledge on clinker grinding was built over ...

Wilson, William, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

313

Non-Linear Drying Diffusion and Viscoelastic Drying Shrinkage Modeling in Hardened Cement Pastes  

E-Print Network [OSTI]

modeling with an average diffusion coefficient and with determined viscoelastic parameters from creep tests agreed well compared to the shrinkage data from experiments, indicating that drying shrinkage of cement paste may be considered as a poroviscoelastic...

Leung, Chin K.

2010-07-14T23:59:59.000Z

314

Microsoft Word - NETL-TRS-2-2014_Addendum 1 to Foamed Cement...  

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

Addendum 1 to Computed Tomography and Statistical Analysis of Bubble Size Distributions in Atmospheric-Generated Foamed Cement 6 March 2014 Office of Fossil Energy NETL-TRS-2-2014...

315

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

Potential (GWh) CO2 Emission Reduction Potential (kt CO 2 )Fuel Savings (TJ) CO2 Emission Reduction Potential (kt COPotentials and CO2 Emission Reductions in 16 Studied Cement

Price, Lynn

2010-01-01T23:59:59.000Z

316

Potential Energy Savings and CO2 Emissions Reduction of China's Cement Industry  

E-Print Network [OSTI]

Energy Savings and CO2 Emissions Reduction of Chinas CementEnergy Savings and CO2 Emissions Reduction of Chinas Cementenergy savings and CO2 emission reduction potentials are

Ke, Jing

2013-01-01T23:59:59.000Z

317

Submicron carbon filament cement-matrix composites for electromagnetic interference shielding  

SciTech Connect (OSTI)

Carbon filaments of diameter 0.1 mm were found to be a much more effective additive than conventional carbon fibers of diameter 10 mm in providing cement pastes capable of electromagnetic interference shielding. With 0.54 vol. % filaments and a shield thickness of 4 mm, a shielding effectiveness of 30 dB was attained at 1--2 GHz. However, the filaments were less effective than the fibers for reinforcing and for providing strain sensing cement-matrix composites.

Fu, X.; Chung, D.D.L. [State Univ. of New York, Buffalo, NY (United States). Composite Materials Research Lab.] [State Univ. of New York, Buffalo, NY (United States). Composite Materials Research Lab.

1996-10-01T23:59:59.000Z

318

Percutaneous Extraction of Cement Leakage After Vertebroplasty Under CT and Fluoroscopy Guidance: A New Technique  

SciTech Connect (OSTI)

Purpose: We report a new minimally invasive technique of extraction of cement leakage following percutaneous vertebroplasty in adults. Methods: Seven adult patients (five women, two men; mean age: 81 years) treated for vertebral compression fractures by percutaneous vertebroplasty had cement leakage into perivertebral soft tissues along the needle route. Immediately after vertebroplasty, the procedure of extraction was performed under computed tomography (CT) and fluoroscopy guidance: a Chiba needle was first inserted using the same route as the vertebroplasty until contact was obtained with the cement fragment. This needle was then used as a guide for an 11-gauge Trocar t'am (Thiebaud, France). After needle withdrawal, a 13-gauge endoscopy clamp was inserted through the cannula to extract the cement fragments. The whole procedure was performed under local anesthesia. Results: In each patient, all cement fragments were withdrawn within 10 min, without complication. Conclusions: This report suggests that this CT- and fluoroscopy-guided percutaneous technique of extraction could reduce the rate of cement leakage-related complications.

Amoretti, Nicolas, E-mail: amorettinicolas@yahoo.fr; Huwart, Laurent, E-mail: huwart.laurent@wanadoo.fr [Centre Hospitalo-Universitaire de Nice, Department of Radiology (France)

2012-12-15T23:59:59.000Z

319

Demonstration Assessment of LED Roadway Lighting: NE Cully Boulevard Portland, OR  

SciTech Connect (OSTI)

A new roadway lighting demonstration project was initiated in late 2010, which was planned in conjunction with other upgrades to NE Cully Boulevard, a residential collector road in the northeast area of Portland, OR. With the NE Cully Boulevard project, the Portland Bureau of Transportation hoped to demonstrate different light source technologies and different luminaires side-by-side. This report documents the initial performance of six different newly installed luminaires, including three LED products, one induction product, one ceramic metal halide product, and one high-pressure sodium (HPS) product that represented the baseline solution. It includes reported, calculated, and measured performance; evaluates the economic feasibility of each of the alternative luminaires; and documents user feedback collected from a group of local Illuminating Engineering Society (IES) members that toured the site. This report does not contain any long-term performance evaluations or laboratory measurements of luminaire performance. Although not all of the installed products performed equally, the alternative luminaires generally offered higher efficacy, more appropriate luminous intensity distributions, and favorable color quality when compared to the baseline HPS luminaire. However, some products did not provide sufficient illumination to all areasvehicular drive lanes, bicycle lanes, and sidewalksor would likely fail to meet design criteria over the life of the installation due to expected depreciation in lumen output. While the overall performance of the alternative luminaires was generally better than the baseline HPS luminaire, cost remains a significant barrier to widespread adoption. Based on the cost of the small quantity of luminaires purchased for this demonstration, the shortest calculated payback period for one of the alternative luminaire types was 17.3 years. The luminaire prices were notably higher than typical prices for currently available luminaires purchased in larger quantities. At prices that are more typical, the payback would be less than 10 years. In addition to the demonstration luminaires, a networked control system was installed for additional evaluation and demonstration purposes. The capability of control system to measure luminaire input power was explored in this study. A more exhaustive demonstration and evaluation of the control system will be the subject of future GATEWAY report(s).

Royer, Michael P.; Poplawski, Michael E.; Tuenge, Jason R.

2012-06-29T23:59:59.000Z

320

Assessment of Energy Efficiency Improvement and CO2 Emission Reduction Potentials in the Cement Industry in China  

E-Print Network [OSTI]

Wang, L. , 2008. Alternative fuel using and waste materialPolicy Research on Alternative Fuels for Cement Industry inis very little use of alternative fuels (defined as waste

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

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


321

Bottom-up Representation of Industrial Energy Efficiency Technologies in Integrated Assessment Models for the Cement Sector  

E-Print Network [OSTI]

Advanced Concepts of Waste Heat Recovery in Cement Plantsbuilding controls, waste heat recovery or adjustable speedquantities of low grade waste heat from the kilns or clinker

Sathaye, J.

2011-01-01T23:59:59.000Z

322

Energy efficiency for greenhouse gas emission reduction in China: The case of the cement industry  

SciTech Connect (OSTI)

A project at LBNL has combined two different approaches to investigate changes in efficiency in China`s cement industry, which currently accounts for over 6% of China`s total commercial energy use and over 1% of global carbon emissions. Cement output has doubled over the past five years, and will double again within 15 years. Addressing cement industry carbon emissions will be a key element of any program to control China`s carbon emissions. Macro-level analysis was used to investigate industry-wide trends, and detailed case studies of individual plants illuminated key issues in technology choice that fundamentally affect efficiency. In general, enterprises adopted technologies that increased output and improved quality, and had little regard for energy efficiency, though most new technologies and practices did improve efficiency. Changes in energy prices were a surprisingly weak factor in adoption of efficient technologies. Unexpectedly, many enterprises developed a strong preference for the least fuel-efficient technology, which allows power generation with kiln waste heat. This preference was motivated in a large part by the desire to achieve security in electricity supply, and by some reforms. This alternative has become increasingly popular, and threatens to reverse some progress made in reducing the carbon-intensiveness of China`s cement industry. Foreign technical assistance and more importantly, greater participation in China`s cement industry of foreign cement companies would speed the adoption of large scale very efficient precalciner plants. Paradoxically, improving energy efficiency in China`s cement industry is also a supply-side issue, improved reliability in China`s power network will make the more fuel-efficient alternative more attractive.

Sinton, J. [Lawrence Berkeley National Lab., Berkeley, CA (United States)

1996-12-31T23:59:59.000Z

323

By-Products Utilization  

E-Print Network [OSTI]

Center for By-Products Utilization USE OF CLEAN COAL ASH AS SETTING TIME REGULATOR IN PORTLAND OF WISCONSIN ­ MILWAUKEE #12;2 Use of Clean Coal Ash as Setting Time Regulator in Portland Cement by Zichao Wu as setting time regulator for portland cement production. In this paper a source of clean coal ash (CCA

Wisconsin-Milwaukee, University of

324

In-situ early-age hydration study of sulfobelite cements by synchrotron powder diffraction  

SciTech Connect (OSTI)

Eco-friendly belite calcium sulfoaluminate (BCSA) cement hydration behavior is not yet well understood. Here, we report an in-situ synchrotron X-ray powder diffraction study for the first hours of hydration of BCSA cements. Rietveld quantitative phase analysis has been used to establish the degree of reaction (?). The hydration of a mixture of ye'elimite and gypsum revealed that ettringite formation (? ? 70% at 50 h) is limited by ye'elimite dissolution. Two laboratory-prepared BCSA cements were also studied: non-active-BCSA and active-BCSA cements, with ?- and ??{sub H}-belite as main phases, respectively. Ye'elimite, in the non-active-BCSA system, dissolves at higher pace (? ? 25% at 1 h) than in the active-BCSA one (? ? 10% at 1 h), with differences in the crystallization of ettringite (? ? 30% and ? ? 5%, respectively). This behavior has strongly affected subsequent belite and ferrite reactivities, yielding stratlingite and other layered phases in non-active-BCSA. The dissolution and crystallization processes are reported and discussed in detail. -- Highlights: Belite calcium sulfoaluminate cements early hydration mechanism has been determined. Belite hydration strongly depends on availability of aluminum hydroxide. Orthorhombic yeelimite dissolved at a higher pace than cubic one. Yeelimite larger reaction degree yields stratlingite formation by belite reaction. Rietveld method quantified gypsum, anhydrite and bassanite dissolution rates.

lvarez-Pinazo, G.; Cuesta, A.; Garca-Mat, M.; Santacruz, I.; Losilla, E.R. [Departamento de Qumica Inorgnica, Universidad de Mlaga, Campus Teatinos S/N., 29071 Mlaga (Spain)] [Departamento de Qumica Inorgnica, Universidad de Mlaga, Campus Teatinos S/N., 29071 Mlaga (Spain); Sanflix, S.G. [Unidad Tcnica de Investigacin de Materiales, AIDICO, Avda. Benjamn Franklin, 17 Paterna, Valencia (Spain)] [Unidad Tcnica de Investigacin de Materiales, AIDICO, Avda. Benjamn Franklin, 17 Paterna, Valencia (Spain); Fauth, F. [CELLS-Alba synchrotron, Carretera BP 1413, Km. 3.3, E-08290 Cerdanyola, Barcelona (Spain)] [CELLS-Alba synchrotron, Carretera BP 1413, Km. 3.3, E-08290 Cerdanyola, Barcelona (Spain); Aranda, M.A.G. [Departamento de Qumica Inorgnica, Universidad de Mlaga, Campus Teatinos S/N., 29071 Mlaga (Spain) [Departamento de Qumica Inorgnica, Universidad de Mlaga, Campus Teatinos S/N., 29071 Mlaga (Spain); CELLS-Alba synchrotron, Carretera BP 1413, Km. 3.3, E-08290 Cerdanyola, Barcelona (Spain); De la Torre, A.G., E-mail: mgd@uma.es [Departamento de Qumica Inorgnica, Universidad de Mlaga, Campus Teatinos S/N., 29071 Mlaga (Spain)

2014-02-15T23:59:59.000Z

325

Determining the slag fraction, water/binder ratio and degree of hydration in hardened cement pastes  

SciTech Connect (OSTI)

A method for determining the original mix composition of hardened slag-blended cement-based materials based on analysis of backscattered electron images combined with loss on ignition measurements is presented. The method does not require comparison to reference standards or prior knowledge of the composition of the binders used. Therefore, it is well-suited for application to real structures. The method is also able to calculate the degrees of reaction of slag and cement. Results obtained from an experimental study involving sixty samples with a wide range of water/binder (w/b) ratios (0.30 to 0.50), slag/binder ratios (0 to 0.6) and curing ages (3 days to 1 year) show that the method is very promising. The mean absolute errors for the estimated slag, water and cement contents (kg/m{sup 3}), w/b and s/b ratios were 9.1%, 1.5%, 2.5%, 4.7% and 8.7%, respectively. 91% of the estimated w/b ratios were within 0.036 of the actual values. -- Highlights: A new method for estimating w/b ratio and slag content in cement pastes is proposed. The method is also able to calculate the degrees of reaction of slag and cement. Reference standards or prior knowledge of the binder composition are not required. The method was tested on samples with varying w/b ratios and slag content.

Yio, M.H.N., E-mail: marcus.yio11@imperial.ac.uk; Phelan, J.C.; Wong, H.S.; Buenfeld, N.R.

2014-02-15T23:59:59.000Z

326

Evaluation of in-situ cemented backfill performance. Rept. of Investigations/1991  

SciTech Connect (OSTI)

As part of its research program to investigate ways of improving resource recovery and reducing subsidence, researchers from the U.S. Bureau of Mines placed instruments in the B-North ore body of the Cannon Mine, Wenatchee, WA, to monitor cemented backfill and rock deformation during mining. The vibrating-wire guages proved to be reliable and versatile, and approximately half of the instruments are providing data after 2 years of use. A two-dimensional, finite-element model was used to analyze the Cannon Mine's multilevel bench cut-and-fill mining method and predict rock and backfill displacements. The model accurately predicted rock displacements, but the predicted and measured displacements in cemented backfill had a correlation coefficient near zero, indicating that the model should only be used to predict rock displacements and not backfill displacements. A finite-difference model was also used to evaluate the stability of a cemented backfill pillar. Results can be used to conservatively predict backfill stresses, but on-site observations of pillar failures coupled with in situ measurements are needed to make more accurate predictions. An ongoing evaluation of the mining system has indicated that filling the primary stopes tight to the back with cemented backfill allowed these pillars to carry overburden loads soon after the cemented backfill was placed.

Tesarik, D.R.; Vickery, J.D.; Seymour, J.B.

1991-01-01T23:59:59.000Z

327

International Best Practices for Pre-Processing and Co-Processing Municipal Solid Waste and Sewage Sludge in the Cement Industry  

E-Print Network [OSTI]

least two seconds. The waste heat from the co-processingis drawn from the waste heat of the associated cementSewage sludge drying using waste heat from cement plant flue

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

328

Influence of curing temperature on cement hydration and mechanical strength development of fly ash mortars  

SciTech Connect (OSTI)

The influence of fly ash and curing temperature on cement hydration and compressive strength development of mortars was investigated. Test parameters included type of fly ash (two different Class F fly ashes were tested), the level of cement replacement (10, 20 and 30% by mass), and curing temperature (20 C and 40 C). The mortar physical and microstructural properties were determined by means of thermal analyses, compressive strength measurements and SEM observations. Test results confirm that fly ash tends to increase significantly the rate of cement hydration at early age. Data also demonstrate that an elevation of the curing temperature reduces the long-term compressive strength of the reference mortar mixture. In contrast, an increase of the curing temperature seems to have no detrimental effect on the long-term compressive strength of the fly ash mixtures.

Maltais, Y.; Marchand, J. [Univ. Laval, Quebec (Canada). Centre de Recherche Interuniversitaire sur le Beton] [Univ. Laval, Quebec (Canada). Centre de Recherche Interuniversitaire sur le Beton

1997-07-01T23:59:59.000Z

329

Carbon black: A low cost colloidal additive for controlling gas-migration in cement slurries  

SciTech Connect (OSTI)

The effect of different additives on the permeability of cement slurries to formation gas has been studied with the aid of a gas flow apparatus. The performance of two commercial additives (polymer latex and silica fume) has been compared to that of a novel additive (carbon black) that has been developed in the authors laboratories with the aim of simplifying the cement slurry composition and reducing field operational costs. Data on the thickening time, fluid loss, rheology and compressive strength are also presented to provide a clear picture of the potential of carbon black as a substitute for silica fume and polymer latex in some field applications. Finally, the paper describes the results of a field application using carbon black as a gas-block additive in the cement slurry.

Calloni, G.; Moroni, N.; Miano, F.

1995-11-01T23:59:59.000Z

330

Temperature Measurement During Polymerization of Bone Cement in Percutaneous Vertebroplasty: An In Vivo Study in Humans  

SciTech Connect (OSTI)

Aim of the study was to 'in vivo' measure temperature, during percutaneous vertebroplasty (PV), within a vertebral body injected with different bone cements. According to the declaration of Helsinki, 22 women (60-80 years; mean, 75 years) with painful osteoporotic vertebral collapse underwent bilateral transpedicular PV on 22 lumbar vertebrae. Two 10-G vertebroplasty needles were introduced into the vertebra under digital fluoroscopy; a 16-G radiofrequency thermoablation needle (Starburst XL; RITA Medical System Inc., USA), carrying five thermocouples, was than coaxially inserted. Eleven different bone cements were injected and temperatures were measured every 30 s until temperatures dropped under 45{sup o}C. After the thermocouple needle was withdrawn, bilateral PV was completed with cement injection through the vertebroplasty needle. Unpaired Student's t-tests, Kruskal-Wallis test, and Wilcoxon signed rank test were used to evaluate significant differences (p < 0.05) in peak temperatures, variations between cements, and clinical outcome. All procedures were completed without complications, achieving good clinical outcomes (p < 0.0001). Regarding average peak temperature, cements were divided into three groups: A (over 60{sup o}C), B (from 50{sup o} to 60{sup o}C), and C (below 50{sup o}C). Peak temperature in Group A (86.7 {+-} 10.7{sup o}C) was significantly higher (p = 0.0172) than that in Groups B (60.5 {+-} 3.7{sup o}C) and C (44.8 {+-} 2.6{sup o}C). The average of all thermocouples showed an extremely significant difference (p = 0.0002) between groups. None of the tested cements maintained a temperature {>=}45{sup o}C for more than 30 min. These data suggest that back-pain improvement is obtained not by thermal necrosis but by mechanical consolidation only. The relative necrotic thermal effect in vertebral metastases seems to confirm that analgesia must be considered the main intent of PV.

Anselmetti, Giovanni Carlo, E-mail: giovanni.anselmetti@ircc.it; Manca, Antonio [Institute for Cancer Research and Treatment (IRCC), Interventional Radiology Unit (Italy); Kanika, Khanna; Murphy, Kieran [Johns Hopkins Hospital, Radiology and Radiological Science (United States); Eminefendic, Haris [Institute for Cancer Research and Treatment (IRCC), Radiology Unit (Italy); Masala, Salvatore ['Tor Vergata' University General Hospital, Department of Diagnostic Imaging, Molecular Imaging, Interventional Radiology and Radiotherapy (Italy); Regge, Daniele [Institute for Cancer Research and Treatment (IRCC), Radiology Unit (Italy)

2009-05-15T23:59:59.000Z

331

Ghabezloo: Micromechanics analysis of thermal expansion and thermal pressurization of a hardened cement paste Micromechanics analysis of thermal expansion and thermal  

E-Print Network [OSTI]

pore fluid is anomalously higher than the one of pure bulk water. The micromechanics model water-to-cement ratios. It permits also to calculate the pore volume thermal expansion coefficient expansion and thermal pressurization of a hardened cement paste, Cement and Concrete Research, DOI 10.1016/j

Boyer, Edmond

332

A cement kiln flue-dust evaluated as a soil liming material  

E-Print Network [OSTI]

A CEMENT KILN FLUE-DUST EVALUATED AS A SOIl LIMING MATERIAL A Thesis by RAIMUND STACHA Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE 1973 NJSbj t...:~StlCh tt A CEMENT KILN FLUE-DUST EVALUATED AS A SOIL I IMING MATERIAL A Thesis by RAIMUND STACHA Approved as to style and content by: (Chairman of Committee) (Head of Department) (Me er) (Member) (Member) (Member) (Member) 1973 ABSTRACT A...

Stacha, Raimund

1973-01-01T23:59:59.000Z

333

CSER 00-001 Criticality Safety Evaluation Report for Cementation Operations at the PFP  

SciTech Connect (OSTI)

Glovebox HA-20MB is located in Room 235B of the 234-5Z Building at the Plutonium Finishing Plant. This enclosure contains mixers, mixer bowls, a crusher unit, an isolated inoperable conveyor unit, plutonium residue feed cans, cemented cans, and a feedwater container. Plutonium residue, not conducive to other forms of stabilization, is prepared for storage and ultimate disposal by cementation. The feed residue material cans can have plutonium contents of only a few grams or up to 200 grams. This evaluation accommodates this wide range of container fissile concentrations.

DOBBIN, K.D.

2000-04-18T23:59:59.000Z

334

Soil stabilization and pavement recycling with self-cementing coal fly ash  

SciTech Connect (OSTI)

This manual provides design information for self-cementing coal fly ash as the sole stabilizing agent for a wide range of engineering applications. As in any process, the application of sound engineering practices, appropriate testing, and evaluation of fly ash quality and characteristics will lend themselves to successful projects using the guidelines in this manual. Topics discussed include: self-cementing coal fly ash characteristics; laboratory mix design; stabilization of clay soils; stabilisation of granular materials; construction considerations; high sulfate ash; environmental considerations for fly ash stabilization; design considerations; state specification/guidelines/standards; and a sample of a typical stabilization specification.

NONE

2008-01-15T23:59:59.000Z

335

A Signal-Inducing Bone Cement for Magnetic Resonance Imaging-Guided Spinal Surgery Based on Hydroxyapatite and Polymethylmethacrylate  

SciTech Connect (OSTI)

The aim of this study was to develop a signal-inducing bone cement for magnetic resonance imaging (MRI)-guided cementoplasty of the spine. This MRI cement would allow precise and controlled injection of cement into pathologic lesions of the bone. We mixed conventional polymethylmethacrylate bone cement (PMMA; 5 ml methylmethacrylate and 12 g polymethylmethacrylate) with hydroxyapatite (HA) bone substitute (2-4 ml) and a gadolinium-based contrast agent (CA; 0-60 {mu}l). The contrast-to-noise ratio (CNR) of different CA doses was measured in an open 1.0-Tesla scanner for fast T1W Turbo-Spin-Echo (TSE) and T1W TSE pulse sequences to determine the highest signal. We simulated MRI-guided cementoplasty in cadaveric spines. Compressive strength of the cements was tested. The highest CNR was (1) 87.3 (SD 2.9) in fast T1W TSE for cements with 4 {mu}l CA/ml HA (4 ml) and (2) 60.8 (SD 2.4) in T1W TSE for cements with 1 {mu}l CA/ml HA (4 ml). MRI-guided cementoplasty in cadaveric spine was feasible. Compressive strength decreased with increasing amounts of HA from 46.7 MPa (2 ml HA) to 28.0 MPa (4 ml HA). An MRI-compatible cement based on PMMA, HA, and CA is feasible and clearly visible on MRI images. MRI-guided spinal cementoplasty using this cement would permit direct visualization of the cement, the pathologic process, and the anatomical surroundings.

Wichlas, Florian, E-mail: florian.wichlas@charite.de; Seebauer, Christian J.; Schilling, Rene [University Charite, Center for Musculoskeletal Surgery (Germany); Rump, Jens [University Charite, Department of Radiology (Germany); Chopra, Sascha S. [University Charite, Center for Musculoskeletal Surgery (Germany); Walter, Thula; Teichgraeber, Ulf K. M. [University Charite, Department of Radiology (Germany); Bail, Hermann J. [University Charite, Center for Musculoskeletal Surgery (Germany)

2012-06-15T23:59:59.000Z

336

A composite material that consists essentially of a binding medium, such as a mixture of portland ce-  

E-Print Network [OSTI]

that of Type I cement. Aggregate. The aggregate is a granular material, such as sand, gravel, crushed stone to as coarse aggregate, gravel, or stone. By carefully grading the material and selecting an optimal particle size distribution, a maximum packing density can be achieved, where the smaller particles fill the void

Meyer, Christian

337

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

, Evergreen Consulting Ross Holter, Flathead Electric Co-op John Morris, Fluid Market Strategies Virginia Harman, Glacier Electric Coop Ken Baker, Idaho Industrial Consultant Theresa Drake, Idaho Power Company of Energy Don Jones, PacifiCorp Phil Welker, PECI Dick Adams, PNUCC Lauren Shapton, Portland General

338

CHI 2005 PAPERS: Eye Gaze and Multimodal Integration Patterns April 27 Portland, Oregon, USA Conversing with the User Based on Eye-Gaze Patterns  

E-Print Network [OSTI]

CHI 2005 PAPERS: Eye Gaze and Multimodal Integration Patterns April 2­7 Portland, Oregon, USA Conversing with the User Based on Eye-Gaze Patterns Pernilla Qvarfordt Dept. of Computer and Information in observations of eye-gaze patterns in human-human dialogue, this study explores using eye-gaze patterns

Lawrie, Dawn J.

339

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

(Morlan) (C) Apr 13-14 (Boise) Packet - April 1 Battelle and BPA presentation on Smart Grid demo (C SUBJECT: Discussion of future agenda items The power planning division has compiled a list of possible, 2010 Agenda Planning for Power Division - 2010 Month Potential Topics Jan 12-13 (Portland) Packet - Jan

340

Solidification of ion exchange resin wastes  

SciTech Connect (OSTI)

Solidification media investigated included portland type I, portland type III and high alumina cements, a proprietary gypsum-based polymer modified cement, and a vinyl ester-styrene thermosetting plastic. Samples formulated with hydraulic cement were analyzed to investigate the effects of resin type, resin loading, waste-to-cement ratio, and water-to-cement ratio. The solidification of cation resin wastes with portland cement was characterized by excessive swelling and cracking of waste forms, both after curing and during immersion testing. Mixed bed resin waste formulations were limited by their cation component. Additives to improve the mechanical properties of portland cement-ion exchange resin waste forms were evaluated. High alumina cement formulations dislayed a resistance to deterioration of mechanical integrity during immersion testing, thus providing a significant advantage over portland cements for the solidification of resin wastes. Properties of cement-ion exchange resin waste forms were examined. An experiment was conducted to study the leachability of /sup 137/Cs, /sup 85/Sr, and /sup 60/Co from resins modified in portland type III and high alumina cements. The cumulative /sup 137/Cs fraction release was at least an order of magnitude greater than that of either /sup 85/Sr or /sup 60/Co. Release rates of /sup 137/Cs in high alumina cement were greater than those in portland III cement by a factor of two.Compressive strength and leach testing were conducted for resin wastes solidified with polymer-modified gypsum based cement. /sup 137/Cs, /sup 85/Sr, and /sup 60/Co fraction releases were about one, two and three orders of magnitude higher, respectively, than in equivalent portland type III cement formulations. As much as 28.6 wt % dry ion exchange resin was successfully solidified using vinyl ester-styrene compared with a maximum of 25 wt % in both portland and gypsum-based cement.

Not Available

1982-08-01T23:59:59.000Z

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


341

Corrosion of Aluminium in Composite Cements Anthony Setiadi* and Neil B. Milestone  

E-Print Network [OSTI]

Corrosion of Aluminium in Composite Cements Anthony Setiadi* and Neil B. Milestone Immobilisation they are economic, durable and have long-term stability. However, there may be issues regarding the corrosion it is exposed to air, an oxide layer is formed. This layer generally provides protection to further corrosion

Sheffield, University of

342

Cement-based biocide coatings for controlling algal growth in water distribution canals  

E-Print Network [OSTI]

to potable or waste water. There is however a lack of understanding in the correlation between the natureCement-based biocide coatings for controlling algal growth in water distribution canals A. Alum Foundation, Water Quality Center, Arizona State University, Tempe, AZ, United States a r t i c l e i n f o

Mobasher, Barzin

343

CSER 96-027: storage of cemented plutonium residue containers in 55 gallon drums  

SciTech Connect (OSTI)

A nuclear criticality safety analysis has been performed for the storage of residual plutonium cementation containers, produced at the Plutonium Finishing Plant, in 55 gallon drums. This CSER increases the limit of total plutonium stored in each 55 gallon drum from 100 to 200 grams.

Watson, W.T.

1997-01-20T23:59:59.000Z

344

Pore water evolution in oilfield sandstones: constraints from oxygen isotope microanalyses of quartz cement  

E-Print Network [OSTI]

of quartz cement Ann M.E. Marchanda,*, Calum I. Macaulayb , R. Stuart Haszeldinea , Anthony E. Fallickc--direct measurements were not possible) precipitated in the sandstones at temperatures jC; (2) the second zone B in the sandstones most likely between 70 and 90 jC; (3) the third zone C (homogeneous CL pattern and directly

Haszeldine, Stuart

345

Electromagnetic interference shielding reaching 70 dB in steel fiber cement  

E-Print Network [OSTI]

Electromagnetic interference shielding reaching 70 dB in steel fiber cement Sihai Wen, D.D.L. Chung; Silica fume; Shielding 1. Introduction Electromagnetic interference (EMI) shielding [1­4] is in critical, NY 14260-4400, USA Received 9 January 2002; accepted 14 August 2003 Abstract An electromagnetic

Chung, Deborah D.L.

346

Effects of oil charge on illite dates and stopping quartz cement: calibration of basin models  

E-Print Network [OSTI]

Abstract Effects of oil charge on illite dates and stopping quartz cement: calibration of basin Oil can fill pores in reservoir sandstones at any burial depth by long or short distance migration. There has been a debate since 1920 concerning the effect of oil charge. We have made detailed local

Haszeldine, Stuart

347

CAPACITY INVESTMENT UNDER DEMAND UNCERTAINTY: THE ROLE OF IMPORTS IN THE U.S. CEMENT INDUSTRY  

E-Print Network [OSTI]

varies across markets. In the presence of uncertain demand, capacity choices are shown theoreticallyCAPACITY INVESTMENT UNDER DEMAND UNCERTAINTY: THE ROLE OF IMPORTS IN THE U.S. CEMENT INDUSTRY Guy://www.economie.polytechnique.edu/ mailto:chantal.poujouly@polytechnique.edu #12;Capacity Investment under Demand Uncertainty: The Role

Paris-Sud XI, Université de

348

Proceedings of the 12 International Congress on the Chemistry of Cement  

E-Print Network [OSTI]

in water or as a granular water-filled porous media. In the former case, significant settling, and Evaporative Water Loss during Early Age Curing/Drying Immediately after placement, gravitational forces and the local drying environment begin to influence the (micro)structure of a cement paste, mortar, or concrete

Bentz, Dale P.

349

Improved microstructure of cement-based composites through the addition of rock wool particles  

SciTech Connect (OSTI)

Rock wool is an inorganic fibrous substance produced by steam blasting and cooling molten glass. As with other industrial by-products, rock wool particles can be used as cementitious materials or ultra fine fillers in cement-based composites. This study investigated the microstructure of mortar specimens produced with cement-based composites that include various forms of rock wool particles. It conducted compressive strength testing, rapid chloride penetration tests, X-ray diffraction analysis, thermo-gravimetric analysis, and scanning electronic microscopy to evaluate the macro- and micro-properties of the cement-based composites. Test results indicate that inclusion of rock wool particles in composites improved compressive strength and reduced chloride ion penetration at the age of 91 days due to the reduction of calcium hydroxide content. Microscopic analysis confirms that the use of rock wool particles contributed to the formation of a denser, more compact microstructure within the hardened paste. In addition, X-ray diffraction analysis shows few changes in formation of pozzolanic reaction products and no new hydrations are formed with incorporating rock wool particles. - Highlights: We report the microstructural characterization of cement-based composites. Different mixes produced with various rock wool particles have been tested. The influence of different mixes on macro and micro properties has been discussed. The macro properties are included compressive strength and permeability. XRD and SEM observations confirm the pozzolanic reaction in the resulting pastes.

Lin, Wei-Ting [Dept. of Civil Engineering, National Ilan University, Ilan 26047, Taiwan (China); Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan 32546, Taiwan (China); Cheng, An, E-mail: ancheng@niu.edu.tw [Dept. of Civil Engineering, National Ilan University, Ilan 26047, Taiwan (China); Huang, Ran; Zou, Si-Yu [Dept. of Harbor and River Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan (China)

2013-10-15T23:59:59.000Z

350

Mechanical properties of WC10Co cemented carbides sintered from nanocrystalline spray conversion processed powders  

E-Print Network [OSTI]

Mechanical properties of WC±10Co cemented carbides sintered from nanocrystalline spray conversion as the spray conversion process [2]. The WC particle sizes in powders fabricated by the spray conversion: microstructural parameters such as WC grain size, Co mean free path and WC/WC contiguity; chemical factors

Hong, Soon Hyung

351

Characterizations of WC-10Co nanocomposite powders and subsequently sinterhip sintered cemented carbide  

SciTech Connect (OSTI)

Ultrafine WC-Co cemented carbides, combining high hardness and high toughness, are expected to find broad applications. In this study, WC-10Co-0.4VC-0.4Cr{sub 3}C{sub 2} (wt.%) nanocomposite powders, whose average grain size was about 30 nm, were fabricated by spray pyrolysis-continuous reduction and carbonization technology. The as-prepared nanocomposite powders were characterized and analyzed by chemical methods, scanning electron microscopy (SEM), transmission electron microscopy (TEM), BET analysis and atomic force microscopy (AFM). Furthermore, 'sinterhip' was used in the sintering process, by which ultrafine WC-10Co cemented carbides with an average grain size of 240 nm were prepared. The material exhibited high Rockwell A hardness of HRA 92.8, Vickers hardness HV{sub 1} 1918, and transverse rapture strength (TRS) of 3780 MPa. The homogeneously dispersed grain growth inhibitors such as VC, Cr{sub 3}C{sub 2} in nanocomposite powder and the special nonmetal-metal nanocomposite structure of WC-10Co nanocomposite powder played very important roles in obtaining ultrafine WC-10Co cemented carbide with the desired properties and microstructure. There was an abundance of triple junctions in the ultrafine WC-10Co cemented carbide; these triple junctions endowed the sintered specimen with high mechanical properties.

Shi, X.L. [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122Luoshi Road, Wuhan 430070 (China)]. E-mail: sxl071932@126.com; Shao, G.Q. [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122Luoshi Road, Wuhan 430070 (China); Duan, X.L. [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122Luoshi Road, Wuhan 430070 (China); Xiong, Z. [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122Luoshi Road, Wuhan 430070 (China); Yang, H. [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122Luoshi Road, Wuhan 430070 (China)

2006-12-15T23:59:59.000Z

352

Encapsulation of mixed radioactive and hazardous waste contaminated incinerator ash in modified sulfur cement  

SciTech Connect (OSTI)

Some of the process waste streams incinerated at various Department of Energy (DOE) facilities contain traces of both low-level radioactive (LLW) and hazardous constituents, thus yielding ash residues that are classified as mixed waste. Work is currently being performed at Brookhaven National Laboratory (BNL) to develop new and innovative materials for encapsulation of DOE mixed wastes including incinerator ash. One such material under investigation is modified sulfur cement, a thermoplastic developed by the US Bureau of Mines. Monolithic waste forms containing as much as 55 wt % incinerator fly ash from Idaho national Engineering Laboratory (INEL) have been formulated with modified sulfur cement, whereas maximum waste loading for this waste in hydraulic cement is 16 wt %. Compressive strength of these waste forms exceeded 27.6 MPa. Wet chemical and solid phase waste characterization analyses performed on this fly ash revealed high concentrations of soluble metal salts including Pb and Cd, identified by the Environmental Protection Agency (EPA) as toxic metals. Leach testing of the ash according to the EPA Toxicity Characteristic Leaching Procedure (TCLP) resulted in concentrations of Pb and Cd above allowable limits. Encapsulation of INEL fly ash in modified sulfur cement with a small quantity of sodium sulfide added to enhance retention of soluble metal salts reduced TCLP leachate concentrations of Pb and Cd well below EPA concentration criteria for delisting as a toxic hazardous waste. 12 refs., 4 figs., 2 tabs.

Kalb, P.D.; Heiser, J.H. III; Colombo, P.

1990-01-01T23:59:59.000Z

353

Influence of hydroxypropylguars on rheological behaviour of cement-based mortars  

E-Print Network [OSTI]

behavior of cementitious materials [7]. Concrete, mortar and cement grout with high fluidity (e.g. self-compacting concrete or self- leveling underlayment) have been developed in order to facilitate placement. However and Concrete Research 58 (2014) 161-168" DOI : 10.1016/j.cemconres.2014.01.020 #12;2 ABSTRACT

Boyer, Edmond

354

Recovery Act Production of Algal BioCrude Oil from Cement Plant Carbon Dioxide  

SciTech Connect (OSTI)

The consortium, led by Sunrise Ridge Algae Inc, completed financial, legal, siting, engineering and environmental permitting preparations for a proposed demonstration project that would capture stack gas from an operating cement plant and convert the carbon dioxide to beneficial use as a liquid crude petroleum substitute and a coal substitute, using algae grown in a closed system, then harvested and converted using catalyzed pyrolysis.

Robert Weber; Norman Whitton

2010-09-30T23:59:59.000Z

355

Emerging Energy-efficiency and CO{sub 2} Emission-reduction Technologies for Cement and Concrete Production  

SciTech Connect (OSTI)

Globally, the cement industry accounts for approximately 5 percent of current anthropogenic carbon dioxide (CO{sub 2}) emissions. World cement demand and production are increasing significantly, leading to an increase in this industry's absolute energy use and CO{sub 2} emissions. Development of new energy-efficiency and CO{sub 2} emission-reduction technologies and their deployment in the market will be key for the cement industry's mid- and long-term climate change mitigation strategies. This report is an initial effort to compile available information on process description, energy savings, environmental and other benefits, costs, commercialization status, and references for emerging technologies to reduce the cement industry's energy use and CO{sub 2} emissions. Although studies from around the world identify a variety of sector-specific and cross-cutting energy-efficiency technologies for the cement industry that have already been commercialized, information is scarce and/or scattered regarding emerging or advanced energy-efficiency and low-carbon technologies that are not yet commercialized. This report consolidates available information on nineteen emerging technologies for the cement industry, with the goal of providing engineers, researchers, investors, cement companies, policy makers, and other interested parties with easy access to a well-structured database of information on these technologies.

Hasanbeigi, Ali; Price, Lynn; Lin, Elina

2012-04-06T23:59:59.000Z

356

Waste Heat Recovery in Cement Plants By Fluidized Beds  

E-Print Network [OSTI]

combustor is classified as a nonhaz ardous waste similar to fly ash. As such, the sol ids may be disposed in a landfill after obtaining the appropriate permits. The waste solids are coal ash, calcium sulfate, cal cium oxide, and inerts, all ingredients...; a mix 0 clay, limestone, and fly ash is melted into clinker The recoverable waste heat streams from this proc shown in Figure 1. Both a traditional design integrated design are shown. II: W Z 2100? F o ...J

Fraley, L. D.; Ksiao, H. K.; Thunem, C. B.

1984-01-01T23:59:59.000Z

357

Artificial Photosynthesis II -  

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

II - Artificial Photosynthesis II - Joint Center for Artificial Photosynthesis (JCAP) Simulations NathanLewis.png Schematic of a photoelectrochemical cell being designed to harness...

358

Novel Chemically-Bonded Phosphate Ceramic Borehole Sealants (Ceramicretes) for Arctic Environments  

SciTech Connect (OSTI)

Novel chemically bonded phosphate ceramic borehole sealant, i.e. Ceramicrete, has many advantages over conventionally used permafrost cement at Alaska North Slope (ANS). However, in normal field practices when Ceramicrete is mixed with water in blenders, it has a chance of being contaminated with leftover Portland cement. In order to identify the effect of Portland cement contamination, recent tests have been conducted at BJ services in Tomball, TX as well as at the University of Alaska Fairbanks with Ceramicrete formulations proposed by the Argonne National Laboratory. The tests conducted at BJ Services with proposed Ceramicrete formulations and Portland cement contamination have shown significant drawbacks which has caused these formulations to be rejected. However, the newly developed Ceramicrete formulation at the University of Alaska Fairbanks has shown positive results with Portland cement contamination as well as without Portland cement contamination for its effective use in oil well cementing operations at ANS.

Shirish Patil; Godwin A. Chukwu; Gang Chen; Santanu Khataniar

2008-12-31T23:59:59.000Z

359

Demonstration Assessment of Light-Emitting Diode (LED) Retrofit Lamps at the Lobby of the Bonneville Power Administration, Portland, OR  

SciTech Connect (OSTI)

This report describes the process and results of a demonstration of solid-state lighting (SSL) technology in the lobby of the Bonneville Power Administration (BPA) headquarters building in Portland, Oregon. The project involved a simple retrofit of 32 track lights used to illuminate historical black-and-white photos and printed color posters from the 1930s and 1940s. BPA is a federal power marketing agency in the Northwestern United States, and selected this prominent location to demonstrate energy efficient light-emitting diode (LED) retrofit options that not only can reduce the electric bill for their customers but also provide attractive alternatives to conventional products, in this case accent lighting for BPA's historical artwork.

Miller, Naomi

2011-07-01T23:59:59.000Z

360

Life-Cycle Evaluation of Concrete Building Construction as a Strategy for Sustainable Cities  

E-Print Network [OSTI]

of Portland Cement Concrete. P. C. A. [PCA]. Marceau, M.L. ,BIBM) (2009). Sustainable Benefits of Concrete Structures.Brussels, Belgium, European Concrete Platform ASBL ( Bureau

Stadel, Alexander

2013-01-01T23:59:59.000Z

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


361

By-Products Utilization  

E-Print Network [OSTI]

", Portland Cement Association Skokie, IL, pp. 1-10. 11. Burnham, J. C., Bennet, G. F., and Logan, T. J., 1990

Wisconsin-Milwaukee, University of

362

A leach model for solidified/stabilized waste forms based on empirical partitioning of contaminants  

E-Print Network [OSTI]

-liquid or solid form. A variety of binders have been used, but the principal type of inorganic binder is portland cement. When the portland cement is mixed with aqueous wastes, hydration reactions occur and calcium silicate hydrate (C-S- H) and calcium... immobilization mechanisms in s/s, particularly when portland cement is used as a binder. When portland cement is mixed with liquid wastes, hydration reactions occur and a high pH environment (near 12) develop as a result of the formation of Ca(OH), . This high...

Kim, Inchul

1997-01-01T23:59:59.000Z

363

Development of ternary blended Concrete;.  

E-Print Network [OSTI]

??Manufacturing of Portland cement is an energy intensive process newlineand releases very large amount of green house gases into the atmosphere newlinewhich affect the earth (more)

Murthi P

2015-01-01T23:59:59.000Z

364

Assessing the effect of cement-steel interface on well casing corrosion in aqueous CO2 environments  

SciTech Connect (OSTI)

CO{sub 2} leakage is a critical safety concern for geologic storage. In wellbore environments, important leakage paths include the rock-cement and cement-casing interfaces. If the cement-casing interface is filled with escaping CO{sub 2}, the well casing directly contacts the CO{sub 2}. This can cause severe corrosion in the presence of water. This paper studies the effect of steel-cement interface gaps, ranging from 1 mm to 0 um, on casing corrosion. Corrosion kinetics were measured employing electrochemical techniques including linear polarization resistance, open circuit potential and electrochemical impedance spectroscopy. The experimental results showed that the corrosion of steel is not significant where the gap between steel and cement is small ({le} 100 {micro}m). Corrosion rates are controlled by the diffusion of corrosive species (H{sub 2}CO{sub 3} and H{sup +}) along the interface. In contrast, steel corrosion is severe in a broad gap where the corrosion process is limited only by the reaction kinetics of steel and corrosive species. The threshold leading to severe corrosion in terms of the cement-steel interface size (100 {micro}m) was determined. Our research clarifies a corrosion scenario at the cement-steel interface. Casing steel corrosion is initiated when attacked by corrosive species at the cement-steel interface. For relatively tight interfaces, this results in a slow thinning of the casing and expansion of the interface width. If the gap increases beyond the critical threshold size, the corrosion rate increases significantly, and a potentially damaging cycle of corrosion and interface expansion is developed.

Han, Jiabin [Los Alamos National Laboratory; Carey, James W [Los Alamos National Laboratory; Zhang, Jinsuo [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

365

Evaluation of Gel Permeation Chromatography as an analytical tool for aspect cement testing  

E-Print Network [OSTI]

V ? ANALYSIS OF TEST RESULTS Introduction Hot Mixed Asphaltic Concrete Binder Aging Versus GPC . Identification by GPC . GPC and Chemical Analysis CHAPTER VI ? CONCLUSIONS AND RECOMMENDATIONS Conclusions Recommendations ~Pa e iv vii ix 7...EVALUATION OF GEL PERMEATION CHROMATOGRAPHY AS AN ANALYTICAL TOOL FOR ASPHALT CEMENT TESTING A Thesis by RICHARD JOHN HOLMGREEN, JR. Submitted to the Graduate College of Texas A8, M University in partial fulfillment of the requirements...

Holmgreen, Richard J

1985-01-01T23:59:59.000Z

366

Research on drilling fluids and cement slurries at Standard Oil Production Company: an internship report  

E-Print Network [OSTI]

1986 Major Subject: Chemical Engineering Research on Drilling Fluids and Cement Slurries at Standard Oil Production Company An Internship Report by EUGENE CHARLES FLIPSE Dr. K. R. Hall Chairman, Advisory Committee Dr. A Juazis Internship... was assigned to the SOPC Drilling Fluids Laboratory during his internship. Dr. W. C. McMordie, Jr. was his direct supervisor. The technical and administrative duties of this internship fell into six categories: orientation, laboratory build-out, office...

Flipse, Eugene Charles, 1956-

2013-03-13T23:59:59.000Z

367

Deteriorated hardened cement paste structure analyzed by XPS and {sup 29}Si NMR techniques  

SciTech Connect (OSTI)

In this report, X-ray photoelectron spectroscopy (XPS) and {sup 29}Si-MAS-NMR was used for the evaluation of deteriorated hardened cement pastes. The deterioration by ammonium nitrate solution was accompanied by changes in the pore structure as well as by structural changes in the CSH in the hardened cement paste. The CaO/SiO{sub 2} ratio of the CSH decreased with the progress of deterioration, there was also polymerization of the silicate in the CSH. It was confirmed that the degree of polymerization of silicate of the CSH in hardened cement paste can be determined by XPS. It was also shown that the polymerization depends on the structure of the CSH. -- Highlights: The polymerization of silicate of the CSH in the HCP can be observed by XPS. The structure of CSH changed with the degree of calcium leaching. The NMR result about silicate in CSH was in good agreement with the XPS result.

Kurumisawa, Kiyofumi, E-mail: kurumi@eng.hokudai.ac.jp [Faculty of Engineering, Hokkaido University, Japan, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628 (Japan)] [Faculty of Engineering, Hokkaido University, Japan, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628 (Japan); Nawa, Toyoharu [Faculty of Engineering, Hokkaido University, Japan, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628 (Japan)] [Faculty of Engineering, Hokkaido University, Japan, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628 (Japan); Owada, Hitoshi [Radioactive Waste Management Funding and Research Center, 1-15-7 Tsukishima, Chuo-ku, Tokyo (Japan)] [Radioactive Waste Management Funding and Research Center, 1-15-7 Tsukishima, Chuo-ku, Tokyo (Japan); Shibata, Masahito [Taiheiyo Consultant Co., Ltd., 2-4-2, Ohsaku, Sakura-City, Chiba (Japan)] [Taiheiyo Consultant Co., Ltd., 2-4-2, Ohsaku, Sakura-City, Chiba (Japan)

2013-10-15T23:59:59.000Z

368

Effect of Sodium Carboxymethyl Celluloses on Water-catalyzed Self-degradation of 200-degree C-heated Alkali-Activated Cement  

SciTech Connect (OSTI)

We investigated the usefulness of sodium carboxymethyl celluloses (CMC) in promoting self-degradation of 200C-heated sodium silicate-activated slag/Class C fly ash cementitious material after contact with water. CMC emitted two major volatile compounds, CO2 and acetic acid, creating a porous structure in cement. CMC also reacted with NaOH from sodium silicate to form three water-insensitive solid reaction products, disodium glycolate salt, sodium glucosidic salt, and sodium bicarbonate. Other water-sensitive solid reaction products, such as sodium polysilicate and sodium carbonate, were derived from hydrolysates of sodium silicate. Dissolution of these products upon contact with water generated heat that promoted cements self-degradation. Thus, CMC of high molecular weight rendered two important features to the water-catalyzed self-degradation of heated cement: One was the high heat energy generated in exothermic reactions in cement; the other was the introduction of extensive porosity into cement.

Sugama T.; Pyatina, T.

2012-05-01T23:59:59.000Z

369

Production of cements from Illinois coal ash. Final technical report, September 1, 1995--August 31, 1996  

SciTech Connect (OSTI)

The objective of this program is to convert Illinois coal combustion residues, such as fly ash, bottom ash, and boiler slag, into novel cementitious materials for use in the construction industry. These residues are composed largely of SiO{sub 2}, Al{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}, MgO, and CaO, which are also the major components of cement. Since the residues are used as an integral component of the cement and not just as additives to concrete, larger amounts of the residues can be utilized. The process uses submerged combustion to melt blends of coal combustion residues with lime, clay, and/or sand. The submerged combustion melter utilizes natural gas-oxidant firing directly into a molten bath to provide efficient melting of mineral-like materials. Use of this melter for cement production has many advantages over rotary kilns including very little, if any, grinding of the feed material, very low emissions, and compact size. During the first year of the program, samples of coal combustion residues were blended and mixed, as needed; with lime, clay, and/or sand to adjust the composition. Six mixtures, three with fly ash and three with bottom ash, were melted in a laboratory-scale furnace. The resultant products were used in mortar cubes and bars which were subjected to ASTM standard tests of cementitious properties. In the hydraulic activity test, mortar cubes were found to have a strength comparable to standard mortar cements. In the compressive strength test, mortar cubes were found to have strengths that exceeded ASTM blended cement performance specifications. In the ASR expansion test, mortar bars were subjected to alkali-silica reaction-induced expansion, which is a problem for siliceous aggregate-based concretes that are exposed to moisture. The mortar bars made with the products inhibited 85 to 97% of this expansion. These results show that residue-based products have an excellent potential as ASR-preventing additions in concretes.

Wagner, J.C.; Bhatty, J.L.; Mishulovich, A.

1997-05-01T23:59:59.000Z

370

International Best Practices for Pre-Processing and Co-Processing Municipal Solid Waste and Sewage Sludge in the Cement Industry  

E-Print Network [OSTI]

Co-processing Municipal Solid Waste and Sewage Sludge in theno date. Integrated Solid Waste Management. Presentationincineration of Municipal Solid Waste in Cement Industry. :

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

371

International Best Practices for Pre-Processing and Co-Processing Municipal Solid Waste and Sewage Sludge in the Cement Industry  

E-Print Network [OSTI]

L.S. 2008. Complete alternative fuel solution for cementKolyfetis, E. 2007. Alternative Fuels & Raw Materials inof the workshop on Alternative Fuels & Alternative Raw

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

372

Bond Strength Measurements from an Australian Standard Bond Wrench in Comparison to the Unbalanced ASTM C 1072 Bond Wrench to the Balanced and Unbalanced Wrenches  

E-Print Network [OSTI]

Bond wrenches. The Australian wrench values were significantly higher than the American bond wrenches for similar types of samples. Hence it was recommended that the tests be carried out by replacing the cement with Portland cement. This experimental...

Suresh, Sri Vishnu Chaitanya Guptha

2014-08-14T23:59:59.000Z

373

Sulfate Induced Heave: Addressing Ettringite Behavior in Lime Treated Soils and in Cementitious Materials  

E-Print Network [OSTI]

, due to the formation of expansive minerals like ettringite and thaumasite, has been recognized as a problem in Portland cement concrete, stabilized soils, weathered cements, alkaline fly ashes, FGD wastes, chromite ore processing residues and cement... moles of Ca2+, 2 moles of Al3+, 3 moles of SO42-, and 32 moles of water are required. Calcium ions are provided by lime, Portland cement, or fly ash; alumina is supplied by dissolution of oxyhydroxides and phyllosilicates; and sulfates are supplied...

Kochyil Sasidharan Nair, Syam Kumar

2012-02-14T23:59:59.000Z

374

Effect of pyrolyzed carbon black on asphalt cement. Part 2. Asphalt binder. Final report, September 1993-May 1995  

SciTech Connect (OSTI)

Scrap tires derived from automobiles have become a large environmental problem in the United States. In the study, research is carried out to investigate the potential use of tire-derived pyrolyzed carbon black from scrap tires as an asphalt cement modifier. The asphlat cements used in the research were AC10 and AC20. Penetration and softening point tests were performed to obtain the consistency of the asphalt cements. The pyrolyzed carbon black, as provided by Wolf Industries, was combined with the asphalt cement in the following percentages: 5%, 10%, 15% and 20%. Penetration, softening point and ductility tests were performed to determine the temperature susceptibility of the modified binder as altered by the pyrolyzed carbon black. In order that the results are comparable to previous testing, commercial carbon black purchased from CABOT Industry was also used as a modifier in the tests. The same test procedures were applied to the asphalt cements modified by commercial carbon black. The test results contained in the report illustrate the viability of the pyrolyzed carbon black as an asphalt modifier. Recommendations are provided to facilitate further research on this particular project. A preliminary assessment of a test road using the pyrolyzed carbon is appended.

Zeng, Y.; Lovell, C.W.

1996-02-20T23:59:59.000Z

375

Calcite cemented layers, their characterization and use in improving reservoir recovery from Murchison field, northern North Sea  

SciTech Connect (OSTI)

Murchison field is a mature development forming part of the Brent oil province in the East Shetland basin, northern North Sea. The productive reservoir consists of coastal deltaic sands of the Middle Jurassic Brent Group and is produced by a line-drive waterflood mechanism. The Rannoch Formation in Murchison, one of the field's most prolific producing zones, is characterized by the presence of calcite-cemented zones, known locally as doggers, which occlude all porosity and behave as vertical barriers to fluid flow. Geochemical-mineralogical analysis of the carbonate cements allied to sedimentological studies of host sandstone indicate that they occur as continuously cemented layers with relatively homogeneous compositions. Dogger occurrence is generally confined to the upper parts of individual coarsening-upward confined to the upper parts of individual coarsening-upward profile and sand bodies, characterized by low detrital clay and mica contents, low bioturbation, and high pre-cementation porosites and permeabilities. The carbonate bands are thus thought to represent zones of maximum pore water flow through high permeability conduits during burial diagenesis. Wireline correlation supported by core description indicates that at least three significant, laterally continuous calcite-cemented zones occur, the most extensive of which has a lateral extent of at least 5 km. All significant doggers have been mapped geologically and incorporated into the full-field reservoir simulation model. Based on this new understanding, a revised infill drilling and perforation strategy has been devised for the Rannoch Formation, aimed at improving recovery from this complex reservoir zone.

Warrender, J.M. (Conoco Ltd., Aberdeen (United Kingdom)); Spears, D.A. (Univ. of Sheffield (United Kingdom))

1991-08-01T23:59:59.000Z

376

Effect of MgO Additive on Volumetric Expansion of Self-Degradable Cements  

SciTech Connect (OSTI)

We identified hard-burned magnesium oxide (MgO) as a suitable expansive additive for improving the plugging performance of self-degradable, temporary sodium silicate-activated slag/Class C fly ash (SSASC) blend cement sealers into rock fractures in Enhanced Geothermal Systems (EGSs). MgO extended the volumetric expansion of sealers during their exposure to a hydrothermal environment at 200 C under pressures, ranging from 300 to 1500 psi. A great expansion ratc of 19.3% was observed by adding 3.0 wt% MgO under 300 psi pressure, thus promising to plug thoroughly inner fracture. When the pressure was increased from 300 psi to 1500 psi, the expansion rate of cement markedly reduced, corresponding to the formaLion of crack-free specimens and the improvement of compressive strength. However, with 3.0 wt% MgO, the specimens still engendered the generation of numerous visual cracks, although they were prepared under a high pressure of 1500 psi. The effective content of MgO in minimizing and eliminating the generation of cracks was 2.0 wt%, which provided a moderate expansion of {ge} 0.5%. The compressive strength of 2.0 wt% MgO specimens made under a pressure of 300 psi rose {approx} 1.7-fold to 4816 psi with an increasing pressure to 1500 psi. The in-situ growth of brucite crystal formed by the hydrothermal hydration of MgO was responsive for such an expansion of the SSASC cement; meanwhile. two crystalline hydrothermal reaction products, 1.1 nm tobermorite and calcium silicate hydrated, contributed to the development of the sealer's compressive strength. Thus, the increasing pressure seems to suppress and control a growth rate of brucite crystal in response to a lower extension of expansion. Furthermore, all MgO-conlaining SSASC sealers possessed the water-catalyzed self-degradable properties.

Sugama T.; Warren, J.; Butcher, T.

2011-09-30T23:59:59.000Z

377

Controlling the set of carbon-fiber embedded cement with electric current  

DOE Patents [OSTI]

A method for promoting cement or concrete set on demand for concrete that has been chemically retarded by adding carbon fiber to the concrete, which enables it to become electrically conductive, sodium tartrate retardant, and copper sulfate which forms a copper tartrate complex in alkaline concrete mixes. Using electricity, the concrete mix anodically converts the retarding tartrate to an insoluble polyester polymer. The carbon fibers act as a continuous anode surface with a counter electrode wire embedded in the mix. Upon energizing, the retarding effect of tartrate is defeated by formation of the polyester polymer through condensation esterification thereby allowing the normal set to proceed unimpeded.

Mattus, Alfred J.

2004-06-15T23:59:59.000Z

378

Carbonation Behavior of Pure Cement Hydrates under Supercritical Carbon Dioxide Conditions - 12199  

SciTech Connect (OSTI)

Carbonation of cement-based waste forms using a supercritical carbon dioxide (SCCO{sub 2}) is a developing technology for the waste immobilization of radioactive and non-radioactive wastes. However, the detail carbonation behaviors of cement matrices under the SCCO{sub 2} condition are unknown, since cement matrices forms very complex phases. In this study, in order to clarify the crystal phases, we synthesized pure cement hydrate phases as each single phases; portlandite (Ca(OH){sub 2}), ettringite (Ca{sub 6}Al{sub 2}(SO{sub 4}){sub 3}(OH){sub 12}.26H{sub 2}O), and calcium silicate hydrate (n CaO---m SiO{sub 2} ---x H{sub 2}O), using suspensions containing a stoichiometric mixture of chemical regents, and performed carbonation experiments using an autoclave under supercritical condition for carbon dioxide. The XRD results revealed both the carbonate phases and co-product phases depending on the initial hydrate phases; gypsum for Ettringite, amorphous or crystalline silica for calcium silicate hydroxide. Thermogravimetric analysis was also performed to understand carbonation behaviors quantitatively. According to the experimental results, it was found that the major reaction was formation of calcium carbonate (CaCO{sub 3}) in all cases. However, the behaviors of H{sub 2}O and CO{sub 2} content were quietly different: Portlandite was most reactive for carbonation under SCCO{sub 2} conditions, and the CO{sub 2} content per one molar CaO was ranged from 0.96 ? 0.98. In the case of Ettringite, the experiment indicates partial decomposition of ettringite phase during carbonation. Ettringite was comparatively stable even under the SCCO{sub 2} conditions. Therefore, a part of ettringite remained and formed similar phases after the ettringite carbonation. The CO{sub 2} content for ettringite showed almost constant values around 0.86 ? 0.87. In the case of calcium silicate hydrate, the carbonation behavior was significantly influenced by the condition of SCCO{sub 2}. The CO{sub 2} content for the calcium silicate hydrate had values that ranged from 0.51 ? 1.01. The co-products of the carbonation were gypsum (CaSO{sub 4}) for ettringite, silica gel (SiO{sub x}) and silica (SiO{sub 2}) for calcium silicate hydrate, which also contributed to the densification of the particles. The production of co-products enhanced the change to their morphology after the carbonation. (authors)

Hirabayashi, Daisuke; Enokida, Youichi [Graduate School of Engineering, Nagoya University, 1 Furo-cho, Chikusa-ku, Nagoya-shi, Aichi-ken, 464-8603 (Japan); Sawada, Kayo [EcoTopia Science Institute, Nagoya University, 1 Furo-cho, Chikusa-ku, Nagoya-shi, Aichi-ken, 464-8603 (Japan); Hertz, Audrey; Charton, Frederic [CEA, DEN, Marcoule, DTCD/SPDE/L2ED, BP 17171, F-30207 Bagnols-sur-Ceze (France); Frizon, Fabien [CEA, DEN, Marcoule, DTCD/SPDE/LFSM, BP 17171, F-30207 Bagnols-sur-Ceze (France); Brouno, Fournel [CEA, DEN, Marcoule, DTCD, BP 17171, F-30207 Bagnols-sur-Ceze (France)

2012-07-01T23:59:59.000Z

379

Appearance of the first cemental annulation of permanent incisor teeth of the domestic cat (Felis catus)  

E-Print Network [OSTI]

of MASTER OF SCIENCE August 19S3 Major Subject: Veterinary Anatomy APPEARANCE OF THE FIRST CEMENTAL ANNULATION OF THE FFRMANENT INCISOR TEETH OF THE DOMEST'C CAT (EEL IS CATL'S) A Thesis by IN-BACK CHOI Approved as to styie and content by: is, D. V.... the Domestic Cat (Felis catus). (August 1983) In-Back Choi, D. V. M. , Seoul National University Cnairman of Advisory Committee: Dr. R. F. Sis O. V. M. , Ph. D. Fourteen incisors from three female and four male cats (2. 5 to 15. 5 months of age) were...

Choi, In-Back

1983-01-01T23:59:59.000Z

380

Manufacturing Energy and Carbon Footprint - Sector: Cement (NAICS 327310), January 2014 (MECS 2010)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department of Energy Low-TemperatureEnergyAll Manufacturing (NAICS 31-33)Cement

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


381

Cement Creek Ranch Pool & Spa Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin:Energy Information on PV EconomicsOregon: Energy ResourcesCeilingCement

382

Phyllosilicate orientation demonstrates early timing of compactional stabilization in calcite-cemented concretions in the Barnett Shale (Late Mississippian), Fort Worth  

E-Print Network [OSTI]

-cemented concretions in the Barnett Shale (Late Mississippian), Fort Worth Basin, Texas (U.S.A) Ruarri J. Day-Stirrat a in revised form 8 April 2008 Accepted 16 April 2008 Keywords: Barnett Shale Goniometry Concretions Fabric Calcite-cemented zones in the prolific gas-producing Barnett Shale (Ft. Worth Basin, Texas) preserve very

383

Energy Efficiency Improvement and Cost Saving Opportunities for Cement Making. An ENERGY STAR Guide for Energy and Plant Managers  

SciTech Connect (OSTI)

The cost of energy as part of the total production costs in the cement industry is significant, warranting attention for energy efficiency to improve the bottom line. Historically, energy intensity has declined, although more recently energy intensity seems to have stabilized with the gains. Coal and coke are currently the primary fuels for the sector, supplanting the dominance of natural gas in the 1970s. Most recently, there is a slight increase in the use of waste fuels, including tires. Between 1970 and 1999, primary physical energy intensity for cement production dropped 1 percent/year from 7.3 MBtu/short ton to 5.3 MBtu/short ton. Carbon dioxide intensity due to fuel consumption and raw material calcination dropped 16 percent, from 609 lb. C/ton of cement (0.31 tC/tonne) to 510 lb. C/ton cement (0.26 tC/tonne). Despite the historic progress, there is ample room for energy efficiency improvement. The relatively high share of wet-process plants (25 percent of clinker production in 1999 in the U.S.) suggests the existence of a considerable potential, when compared to other industrialized countries. We examined over 40 energy efficient technologies and measures and estimated energy savings, carbon dioxide savings, investment costs, and operation and maintenance costs for each of the measures. The report describes the measures and experiences of cement plants around the wold with these practices and technologies. Substantial potential for energy efficiency improvement exists in the cement industry and in individual plants. A portion of this potential will be achieved as part of (natural) modernization and expansion of existing facilities, as well as construction of new plants in particular regions. Still, a relatively large potential for improved energy management practices exists.

Galitsky, Christina; Worrell, Ernst; Galitsky, Christina

2008-01-01T23:59:59.000Z

384

An evaluation of the carbonate cements and their diagenesis on selected banks, outer Continental Shelf: northern Gulf of Mexico  

E-Print Network [OSTI]

solutions were exact replicates of Mg-calcites formed within the marine environment. Th1s implies that the 20 composition of the cement cannot be determined on the basis of crystal morphology alone (Badiozamani et al, 1977). The literature on carbonate... in that needle-fiber cements are the needles of calcite growing on minute root hairs (Ward, 1975). Care should be taken not to confuse the two. ~S he uiitic c me ts are also aao ite cemeets. The eedias th t comprise the cone shaped bundles are from 1-5 u wide...

Stafford, John Michael

1982-01-01T23:59:59.000Z

385

ACRA-II  

Energy Science and Technology Software Center (OSTI)

003089IBMPC00 ACRA-II: Kernel Integration Code System for Estimation of Radiation Doses Caused by a Hypothetical Reactor Accident

386

Hazardous-waste combustion in industrial processes: cement and lime kilns  

SciTech Connect (OSTI)

This report summarizes the results of several studies relating to hazardous-waste combustion in cement and lime kilns. The tests included in the study are four kilns tested by the U.S. Environmental Protection Agency, four kilns tested by State agencies or the kiln operator, two Canadian tests, and one Swedish test. The predominant types of wastes tested included chlorinated organic compounds, aromatic compounds, and metal-contaminated waste oil. The kiln types include lime kilns and cement kilns, which included the dry, wet, and preheated processes. Fabric filters and electrostatic precipitators (ESPs) were the pollution-control devices used in these processes, and the primary fuels included coal, coke, coal/coke, fuel oil, and natural gas/coke. The parameters examined in the report were Destruction and Removal Efficiency (DRE) of the Principal Organic Hazardous Constitutents, particulate and HCl emissions, metals, and the effect of burning hazardous waste on SO/sub 2/, NOx, and CO emissions. The primary conclusion of the study is that DRE's of 99.99% or greater can be obtained in properly-operated calcining kilns. Particulate matter can increase when chlorinated wastes are burned in a kiln equipped with an electrostatic precipitator. Those kilns equipped with fabric filters showed no change in emissions.

Mournighan, R.E.; Branscome, M.

1987-11-01T23:59:59.000Z

387

Evaluation of water resources for enhanced oil recovery operations, Cement Field, Caddo and Grady Counties, Oklahoma  

SciTech Connect (OSTI)

This report is based on the results of an investigation of the water resources local to the Cement Oil Field in Caddo and Grady Counties, southwestern, Oklahoma. The intent of the report is to present at least a semi-quantitative estimate of the volume, deliverability, and chemistry of the water potentially available for enhanced oil recovery in one or more Oklahoma oil fields. Subsequent to a review of several oil fields, the Cement Field was chosen for study because of its large size (25,000 acres), its extensive subsurface control (over 1850 wells), and its long history of production (since 1952) from several producing formations, some of which are already undergoing extensive waterflood operations. A preliminary review of the available data for this study suggested a threefold categorization of water resources, since the data for each category are distinctly different in nature, and, to some extent, different in source. The three categories are: surface water, ground water, and subsurface water. Flow, volume, and chemical analyses of each source are estimated.

Preston, D.A.; Harrison, W.E.; Luza, K.V.; Prater, L.; Reddy, R.J.

1982-02-01T23:59:59.000Z

388

Recycling of pavement materials  

E-Print Network [OSTI]

wife, Faula, whose pat cence, love, encourage? ment, and understanding made this thesis possihle. TABLE OE CONTENTS INTRODUCTION LITERATURE REVIEW Unstabilized Base Courses Stabilized Base Courses Wisconsin Portland Cement Concrete Michigan... District of Columbia California Wisconsin Texas Asphalt Concrete Massachusetts California Michigan Iowa Texas Indiana Nevada Utah Texas EXPERIMENTAL PROJECTS Portland Cement Concrete Page 10 12 12 17 20 22 24 25 Asphalt Concrete...

O'Neal, Randy Jim

1976-01-01T23:59:59.000Z

389

.1. Report No. FHWA/LA.11/486  

E-Print Network [OSTI]

where the concrete being tested is allowed to cure for a greater numbers of days before the onset of testing. A portland cement replacement level with SCMs of about 70 percent for LADOTD concrete projects, Federal Highway Administration 16. Abstract Portland cement concrete (PCC) is the world's most versatile

Harms, Kyle E.

390

CSC6870 Computer Graphics II CSC6870 Computer Graphics II  

E-Print Network [OSTI]

CSC6870 Computer Graphics II Surfaces CSC6870 Computer Graphics II Surfaces · Plane · Quadratic. CSC6870 Computer Graphics II Plane and Intersection CSC6870 Computer Graphics II Plane Equations · General plane equation ax+by+cz+d=0 · Normal of the plane n=[a, b, c] CSC6870 Computer Graphics II

Hua, Jing

391

Use of precalciners to remove alkali from raw materials in the cement industry. Final report, July 1978-July 1980  

SciTech Connect (OSTI)

The objective of this work was to develop an efficient means of removing alkali metal compounds (alkalies) from high-alkali aluminosilicate raw materials of the type commonly used as part of cement raw mixes in order to increase the energy efficiency of cement manufacture. The intention of this project was to determine whether the high-alkali raw materials could be pyroprocessed separately to remove the alkalies before they entered the rotary kiln, where they would be mixed with the other raw feed components. If this could be achieved, considerable savings could be made in the energy required to remove alkalies, compared to conventional methods in which the cement raw mix must be treated as a whole. Two different methods of alkali removal were examined, namely, vaporization of alkalies at relatively low temperatures; and alkali-rich melt separation at relativey high temperatures. The results showed that the removal of alkalies by pyroprocessing of high-alkali raw feed components separate from the other cement raw mix components is not likely to be a practical alternative to the best available conventional precalciner technology. (LCL)

Gartner, E.M.

1980-07-01T23:59:59.000Z

392

Experimental Evidence for Self-Limiting Reactive Flow through a Fractured Cement Core: Implications for Time-Dependent Wellbore Leakage  

SciTech Connect (OSTI)

We present a set of reactive transport experiments in cement fractures. The experiments simulate coupling between flow and reaction when acidic, CO{sub 2}-rich fluids flow along a leaky wellbore. An analog dilute acid with a pH between 2.0 and 3.15 was injected at constant rate between 0.3 and 9.4 cm/s into a fractured cement core. Pressure differential across the core and effluent pH were measured to track flow path evolution, which was analyzed with electron microscopy after injection. In many experiments reaction was restricted within relatively narrow, tortuous channels along the fracture surface. The observations are consistent with coupling between flow and dissolution/precipitation. Injected acid reacts along the fracture surface to leach calcium from cement phases. Ahead of the reaction front, high pH pore fluid mixes with calcium-rich water and induces mineral precipitation. Increases in the pressure differential for most experiments indicate that precipitation can be sufficient to restrict flow. Experimental data from this study combined with published field evidence for mineral precipitation along cemented annuli suggests that leakage of CO{sub 2}-rich fluids along a wellbore may seal the leakage pathway if the initial aperture is small and residence time allows mobilization and precipitation of minerals along the fracture.

Huerta, Nicolas J.; Hesse, Marc A.; Bryant, Steven L.; Strazisar, Brian R; Lopano, Christina L.

2013-01-01T23:59:59.000Z

393

Recent technologies and processes for enhanced safety in bitumen or cement solidification of Li/ml radwaste  

SciTech Connect (OSTI)

SGN has more than 20 years of experience in the treatment of low and medium level radioactive wastes. SGN industrialized two major types of radwaste processes: bituminization and cement solidification. The R&D work on these two processes is discussed.

Tchemitcheff, F.

1993-12-31T23:59:59.000Z

394

98 OCTOBER 2003 / Concrete international The Center for Advanced Cement-Based Materials (ACBM) is a consortium of  

E-Print Network [OSTI]

98 OCTOBER 2003 / Concrete international The Center for Advanced Cement-Based Materials (ACBM the hydration of concrete. ACBM's Industrial Partners and Northwestern University's Infra- structure Technology to track the very early age hydration of concrete and provide accurate measurements of maturity

395

Development programs in the United States of America for the application of cement-based grouts in radioactive waste management  

SciTech Connect (OSTI)

This paper briefly reviews seven cement-based waste form development programs at six of the US Department of Energy (DOE) sites. These sites have developed a variety of processes that range from producing 25 mm (1 in.) diameter pellets in a glove box to producing 240 m (800 ft.) diameter grout sheets within the bedding planes of a deep shale formation. These successful applications of cement-based waste forms to the many radioactive waste streams from nuclear facilities bear witness to the flexibility and reliability of this class of materials. This paper also discusses the major issues regarding the application of cement-based waste forms to radioactive waste management problems. These issues are (1) leachability, (2) radiation stability, (3) thermal stability, (4) phase complexity of the matrix, and (5) effects of the waste stream composition. A cursory review of current research in each of these areas is given This paper also discusses future trends in cement-based waste form development and applications. 31 references, 11 figures.

Dole, L.R.; Row, T.H.

1984-01-01T23:59:59.000Z

396

MSW PORTLAND CAMPUS COURSES OPEN TO NON-ADMIT STUDENTS Spring 2014 We are pleased to offer several MSW-level social work elective courses in Spring term 2014 to  

E-Print Network [OSTI]

1 MSW PORTLAND CAMPUS COURSES OPEN TO NON-ADMIT STUDENTS ­ Spring 2014 We are pleased to offer several MSW-level social work elective courses in Spring term 2014 to nonadmitted students: SW 510: Social) PLEASE NOTE THAT THESE COURSES ARE ADVANCED ELECTIVES, WITH PREREQUISITES, IN OUR MSW CURRICULUM

Lafferriere, Gerardo

397

MSW PORTLAND CAMPUS COURSES OPEN TO NON-ADMIT STUDENTS Fall 2014 We are pleased to offer three graduate level social work elective courses in Fall term 2014 to  

E-Print Network [OSTI]

1 MSW PORTLAND CAMPUS COURSES OPEN TO NON-ADMIT STUDENTS ­ Fall 2014 We are pleased to offer three, WITH PREREQUISITES, IN OUR MSW CURRICULUM. As described below, you must obtain permission from the instructor. If you are considering applying to the MSW program and might wish to transfer in credits for one

Latiolais, M. Paul

398

MSW PORTLAND CAMPUS COURSES OPEN TO NON-ADMIT STUDENTS Winter 2015 We are pleased to offer five MSW-level social work elective courses in Winter term 2015 to nonadmitted  

E-Print Network [OSTI]

1 MSW PORTLAND CAMPUS COURSES OPEN TO NON-ADMIT STUDENTS ­ Winter 2015 We are pleased to offer five MSW-level social work elective courses in Winter term 2015 to nonadmitted students: SW 510: Racial MSW PROGRAM ELECTIVES, some with prerequisites. You must obtain permission from the instructor

Caughman, John

399

Abstract Presented at Synchrotron Environmental Science II (SES-II)  

E-Print Network [OSTI]

Abstract Presented at Synchrotron Environmental Science II (SES-II) Argonne National Laboratory - 6 such as dioxins and furans, polychlorinated biphenyls (PCBs), and polynuclear aromatic hydrocarbons (PAHs). *Work

Brookhaven National Laboratory

400

ALARA Design Review for the Resumption of the Plutonium Finishing Plant (PFP) Cementation Process Project Activities  

E-Print Network [OSTI]

The requirements for the performance of radiological design reviews are codified in 10CFR835, Occupational Radiation Protection. The basic requirements for the performance of ALARA design reviews are presented in the Hanford Site Radiological Control Manual (HSRCM). The HSRCM has established trigger levels requiring radiological reviews of non-routine or complex work activities. These requirements are implemented in site procedures HNF-PRO-1622 and 1623. HNF-PRO-1622 Radiological Design Review Process requires that ''radiological design reviews [be performed] of new facilities and equipment and modifications of existing facilities and equipment''. In addition, HNF-PRO-1623 Radiological Work Planning Process requires a formal ALARA Review for planned activities that are estimated to exceed 1 person-rem total Dose Equivalent (DE). The purpose of this review is to validate that the original design for the PFP Cementation Process ensures that the principles of ALARA (As Low As Reasonably Achievable) were included...

Dayley, L

2000-01-01T23:59:59.000Z

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


401

Characterization of asphalt cements modified with crumbed rubber from discarded tires. Final report  

SciTech Connect (OSTI)

The potential legislative requirement for incorporation of scrap rubber into asphalt blends mandated a thorough evaluation of the influence of scrap rubber additives on the physical properties and aging characteristics of rubber/asphalt blends. Blends with up to 20 percent ground vulcanized rubber (both crumb and 200 mesh powder particles) from recycled tires were prepared with asphalt cements of various grades (AC5 - AC30) and evaluated using DMA. Blends produced from powdered rubber particles exhibited Newtonian behavior at high temperatures; similar behavior was not observed with crumb rubber blends. The mechanical properties of asphalt-rubber blends depend upon the concentration of rubber additives, the particle dimensions, and the chemical composition of the asphalt.

Daly, W.H.; Negulescu, I.I.

1994-11-01T23:59:59.000Z

402

Simulation and analysis on ultrasonic testing for the cement grouting defects of the corrugated pipe  

SciTech Connect (OSTI)

The defects exist in the cement grouting process of prestressed corrugated pipe may directly impair the bridge safety. In this paper, sound fields propagation in concrete structures with corrugated pipes and the influence of various different defects are simulated and analyzed using finite element method. The simulation results demonstrate a much complex propagation characteristic due to multiple reflection, refraction and scattering, where the scattering signals caused by metal are very strong, while the signals scattered by an air bubble are weaker. The influence of defect both in time and frequency domain are found through deconvolution treatment. In the time domain, the deconvolution signals correspond to larger defect display a larger head wave amplitude and shorter arrive time than those of smaller defects; in the frequency domain, larger defect also shows a stronger amplitude, lower center frequency and lower cutoff frequency.

Qingbang, Han; Ling, Chen; Changping, Zhu [Changzhou Key Laboratory of Sensor Networks and Environmental Sensing, College of IOT, Hohai University Changzhou, Jiangsu, 213022 (China)

2014-02-18T23:59:59.000Z

403

Effect of sodium monofluorophosphate treatment on microstructure and frost salt scaling durability of slag cement paste  

SciTech Connect (OSTI)

Sodium-monofluorophosphate (Na-MFP) is currently in use as a surface applied corrosion inhibitor in the concrete industry. Its basic mechanism is to protect the passive layer of the reinforcement steel against disruption due to carbonation. Carbonation is known as the most detrimental environmental effect on blast furnace slag cement (BFSC) concrete with respect to frost salt scaling. In this paper the effect of Na-MFP on the microstructure and frost salt scaling resistance of carbonated BFSC paste is presented. The results of electron microscopy, mercury intrusion porosimetry (MIP) and X-ray diffraction (XRD) are discussed. It is found that the treatment modifies the microstructure and improves the resistance of carbonated BFSC paste against frost salt attack.

Copuroglu, O. [Delft University of Technology, Faculty of CiTG, Micromechanics Laboratory (MICROLAB) (Netherlands)]. E-mail: o.copuroglu@citg.tudelft.nl; Fraaij, A.L.A. [Delft University of Technology, Faculty of CiTG, Materials Science and Sustainable Construction (Netherlands); Bijen, J.M.J.M. [Delft University of Technology, Faculty of CiTG, Materials Science and Sustainable Construction (Netherlands)

2006-08-15T23:59:59.000Z

404

Jan Hendrik Bruinier II Anna von Pippich Fabrizio Andreatta -Milan, Italy II Massimo Bertolini -Essen, Germany II Siegfried Bcherer -  

E-Print Network [OSTI]

Massimo Bertolini - Essen, Germany II Siegfried Böcherer - Mannheim, Germany II Thanasis Bouganis - Durham II Jay Jorgenson - New York, USA II Winfried Kohnen - Heidelberg, Germany II Jürg Kramer - Berlin, Germany II Siddarth Sankaran - Bonn, Germany II Maryna Viazovska - Bonn, Germany II Tonghai Yang - Madison

Haller-Dintelmann, Robert

405

Well Technologies for CO2 Geological Storage: CO2-Resistant Cement  

E-Print Network [OSTI]

Rsum Technologies de puits pour le stockage gologique du CO2: ciment rsistant au CO2 Le stockage souterrain du CO2 est actuellement considr comme la voie la plus efficace pour une squestration sure et faible cot. Cette nouvelle application exige une tanchit du puits trs long terme. La rupture de la gaine de ciment dans lintervalle entre le cuvelage et la formation gologique peut crer des chemins prfrentiels favorisant la fuite du CO2 vers la surface avec des vitesses probablement suprieures celles pouvant tre provoques par les fuites au travers des formations gologiques. Il en rsultera une perte conomique, une rduction de lefficacit du stockage de CO2 et la remise en cause du champ pour le stockage de CO2. Ce risque potentiel de fuites soulve des questions quant la bonne iso-lation du puits long terme et la durabilit du ciment hydrat utilis pour isoler lannulaire entre les intervalles de production et dinjection dans les puits de CO2. Nous proposons une nouvelle procdure exprimentale et une mthodologie pour tudier la ractivit des systmes CO2-Eau-Ciment en simulant les interactions du ciment pris avec le CO2 inject ltat supercritique dans des conditions de fond de puits. Les conditions utilises pour ces expriences sont de 90C et 280 bars. Lvolution des proprits mcaniques et physico-chimiques du ciment Portland est mesure dans le temps sur une priode maxi-male de six mois. Les rsultats sont compars ceux obtenus par une tude similaire sur un nouveau

V. Barlet-goudard; G. Rimmel; B. Goff; O. Porcherie

406

PARS II Training Workbook (Course 103) | Department of Energy  

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

PARS II Training Workbook (Course 103) PARS II Training Workbook (Course 103) PARS II More Documents & Publications PARS II TRAINING PARS II TRAINING PARS II 104 Contractor Monthly...

407

A chemo-poro-mechanical model of oilwell cement carbonation under CO2 geological storage A. Fabbri*, N. Jacquemet, D.M. Seyedi  

E-Print Network [OSTI]

aquifers (deep underground porous reservoir rocks saturated with brackish water or brine), can be used manuscript, published in "Cement and Concrete Research 42 (2012) 8-19" DOI : 10.1016/j.cemconres.2011

Paris-Sud XI, Université de

408

International Best Practices for Pre-Processing and Co-Processing Municipal Solid Waste and Sewage Sludge in the Cement Industry  

E-Print Network [OSTI]

December. Busato, L.C. n.d. Dioxins and Furans in Brazil:release and control of dioxins in cement kilns - A review.and Quantification of Dioxin and Furan Releases. Geneva,

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

409

Sustainable Housing for Park Rangers in Big Bend National Park, Texas  

E-Print Network [OSTI]

by substituting fly-ash for 20-30% of the portland cement used in normal concrete. This actually improves the performance and quality of the concrete by improving workability, reducing segregation and bleeding, and lowering the heat hydration. 3. Insulated... Permanent Fiber Cement Wall Forms-"Faswall" use recycled mineralized wood waste along with portland cement to produce a CMU like unit that can be worked with normal wood working tools. The 9" thick form block bonds monolithically with a concrete...

Garrison, M.; Griswold, S.

1996-01-01T23:59:59.000Z

410

Computer Graphics II CSC6870 Computer Graphics II CSC6870 Computer Graphics II  

E-Print Network [OSTI]

1 Computer Graphics II CSC6870 Computer Graphics II CSC6870 Computer Graphics II Course Information://www.cs.wayne.edu/~jinghua/6870/csc6870.htm) CSC6870 Computer Graphics II Textbooks · REQUIRED TEXTBOOK: Interactive Computer Graphics: A Top-Down Approach with Shader-Based OpenGL (6th Edition) Edward Angel, Dave Shreiner ISBN-10

Hua, Jing

411

Postburn evaluation for Hanna II, Phases 2 and 3, underground coal gasification experiments, Hanna, Wyoming  

SciTech Connect (OSTI)

During 1980 and 1981 the Laramie Energy Technology Center (LETC) conducted a post-burn study at the Hanna II, Phases 2 and 3 underground coal gasification (UCG) site, Hanna, Wyoming. This report contains a summary of the field and laboratory results from the study. Lithologic and geophysical well log data from twenty-two (22) drill holes, combined with high resolution seismic data delineate a reactor cavity 42.7m (140 ft.) long, 35.1 m (115 ft.) and 21.3 m (70 ft.) high that is partially filled with rubble, char and pyrometamorphic rock. Sedimentographic studies were completed on the overburden. Reflectance data on coal samples within the reactor cavity and cavity wall reveal that the coal was altered by temperatures ranging from 245/sup 0/C to 670/sup 0/C (472/sup 0/-1238/sup 0/F). Overburden rocks found within the cavity contain various pyrometamorphic minerals, indicating that temperatures of at least 1200/sup 0/C (2192/sup 0/F) were reached during the tests. The calcite cemented fine-grained sandstone and siltstone directly above the Hanna No. 1 coal bed formed a strong roof above the cavity, unlike other UCG sites such as Hoe Creek which is not calcite cemented. 30 references, 27 figures, 8 tables.

Youngberg, A.D.; Sinks, D.J.; Craig, G.N. II; Ethridge, F.G.; Burns, L.K.

1983-12-01T23:59:59.000Z

412

Methodological and Practical Considerations for DevelopingMultiproject Baselines for Electric Power and Cement Industry Projects inCentral America  

SciTech Connect (OSTI)

The Lawrence Berkeley National Laboratory (Berkeley Lab) andthe Center for Sustainable Development in the Americas (CSDA) conductedtechnical studies and organized two training workshops to developcapacity in Central America for the evaluation of climate changeprojects. This paper describes the results of two baseline case studiesconducted for these workshops, one for the power sector and one for thecement industry, that were devised to illustrate certain approaches tobaseline setting. Multiproject baseline emission rates (BERs) for themain Guatemalan electricity grid were calculated from 2001 data. Inrecent years, the Guatemalan power sector has experienced rapid growth;thus, a sufficient number of new plants have been built to estimateviable BERs. We found that BERs for baseload plants offsetting additionalbaseload capacity ranged from 0.702 kgCO2/kWh (using a weighted averagestringency) to 0.507 kgCO2/kWh (using a 10th percentile stringency),while the baseline for plants offsetting load-followingcapacity is lowerat 0.567 kgCO2/kWh. For power displaced from existing load-followingplants, the rate is higher, 0.735 kgCO2/kWh, as a result of the age ofsome plants used for meeting peak loads and the infrequency of their use.The approved consolidated methodology for the Clean Development Mechanismyields a single rate of 0.753 kgCO2/kWh. Due to the relatively smallnumber of cement plants in the region and the regional nature of thecement market, all of Central America was chosen as the geographicboundary for setting cement industry BERs. Unfortunately, actualoperations and output data were unobtainable for most of the plants inthe region, and many data were estimated. Cement industry BERs rangedfrom 205 kgCO2 to 225 kgCO2 per metric ton of cement.

Murtishaw, Scott; Sathaye, Jayant; Galitsky, Christina; Dorion,Kristel

2004-09-02T23:59:59.000Z

413

The development of plant for reprocessing of radioactive waste from atomic power plant decommissioning with cementation method  

SciTech Connect (OSTI)

The primary purpose for developing this facility is to design a universal mixer, which carries out the process of cementation either in continuous or in batch mode under close control. The second aim for development is to simplify, as much as possible, the process of decontamination of the mixer. The mixer is developed on the base of the apparatus and consists of the inductor of the apparatus with the vorticity layer, where magnet windings which produce a rotating magnetic field are placed.

Barinov, A.S.; Volkov, A.S.; Dmitriev, S.A.; Flit, V.U.; Chebishev, V.M. [Moscow SIA Radon, Sergiev Posad (Russian Federation). Dept. of Engineering Supply

1993-12-31T23:59:59.000Z

414

Smog Check II Evaluation Part II: Overview of Vehicle  

E-Print Network [OSTI]

Smog Check II Evaluation Part II: Overview of Vehicle Emissions . . . . . . . . . . . . Prepared in Later Sections ____________________ 1 3. Older Vehicles Have Higher Emissions on Average _____________ 3 4. The Vehicle Fleet Is Dominated by Newer Vehicles______________ 8 5. More Recent Vehicle Models

Denver, University of

415

Effect of Decreasing of Cobalt Content in Properties for Diamond/Cemented Carbide Tools  

SciTech Connect (OSTI)

Powder metallurgy plays a role in manufacturing such as automotive and cutting tool applications. Diamond/cemented carbide tools are also made from this technique. Diamond particle and other matrix materials were employed in this study. The purpose is to investigate the physical and mechanical properties of different Cobalt (Co) content samples by using Taguchi's method. The materials used in the experiments were mixed by using a ball-mill machine. The mixed powders were pressed by conventional method. Then the green samples were sintered in a vacuum furnace. After reaching 500 deg. C, the samples were sintered with Argon (Ar) gas. The sintered samples were investigated density by immersion method, porosity by water saturation method, and hardness by Vicker hardness tester. It was found that with 59.5% Co content, plain diamond type, sintering temperature of 950 deg. C, sintering time of 40 minutes, and pressure of 625 MPa, density, porosity, and hardness got the best result in this study. From the Taguchi's analysis, the significant factors effected the performance were composition, sintering temperature, and sintering time.

Waratta, A.; Hamdi, M. [Department of Design and Manufacture, Faculty of Engineering, University of Malaya (Malaysia); Ariga, T. [Department of Materials Science, School of Engineering, Tokai University (Japan)

2010-03-11T23:59:59.000Z

416

Evaluation of Life-Cycle Assessment Studies of Chinese Cement Production: Challenges and Opportunities  

SciTech Connect (OSTI)

The use of life-cycle assessment (LCA) to understand the embodied energy, environmental impacts, and potential energy-savings of manufactured products has become more widespread among researchers in recent years. This paper reviews recent LCA studies in the cement industry in China and in other countries and provides an assessment of the methodology used by the researchers compared to ISO LCA standards (ISO 14040:2006, ISO 14044:2006, and ISO/TR 14048:2002). We evaluate whether the authors provide information on the intended application, targeted audience, functional unit, system boundary, data sources, data quality assessment, data disaggregation and other elements, and draw conclusions regarding the level of adherence to ISO standards for the papers reviewed. We found that China researchers have gained much experience during last decade, but still have room for improvement in establishing boundaries, assessing data quality, identifying data sources, and explaining limitations. The paper concludes with a discussion of directions for future LCA research in China.

Lu, Hongyou; Masanet, Eric; Price, Lynn

2009-05-29T23:59:59.000Z

417

FAKULTT II MATHEMATIK UND  

E-Print Network [OSTI]

OF A NETWORK CREATION GAME WITH EXPONENTIAL PAYOFF by NADINE BAUMANN SEBASTIAN STILLER No. 2007/19 #12;The Price of Anarchy of a Network Creation Game with Exponential Payoff Nadine Baumann Sebastian Stiller May/5-3. Technische Universität Berlin, Fakultät II, Stra?e des 17. Juni 136, 10623 Berlin, Germany. Email: stiller

Nabben, Reinhard

418

Atmospheric Dynamics II Instructor  

E-Print Network [OSTI]

AT602 Atmospheric Dynamics II 2 credits Instructor: David W. J. Thompson davet: An Introduction to Dynamic Meteorology, 5th Edition, Academic Press (recommended) · Marshall, J., and Plumb, R. A., 2008: Atmosphere, Ocean, and Climate Dynamics: An Introductory Text, Academic Press. · Vallis, G. K

419

Formulation verification study results for 241-AN-106 waste grout  

SciTech Connect (OSTI)

Tests were conducted to determine whether the reference formulation and variations around the formulation are adequate for solidifying 241-AN-106 (106-AN) waste into a grout waste form. The reference formulation consists of 21 wt% type I/II Portland cement, 68 wt% fly ash, and 11 wt% attapulgite clay. The mix ratio is 8.4 lb/gal. Variations in dry blend component ratios, mix ratio, and waste concentration were assessed by using a statistically designed experimental matrix consisting of 44 grout compositions. Based on the results of the statistically designed variability study, the 106-AN grout formulations tested met all the formulation criteria except for the heat of hydration.

Lokken, R.O.; Martin, P.F.C.; Morrison, L.C.; Palmer, S.E.; Anderson, C.M.

1993-06-01T23:59:59.000Z

420

Fluorescence of [Fe II] in H II regions  

E-Print Network [OSTI]

A study of [Fe II] lines at various positions within the H II regions M42 and M43 is presented. The relative intensities of selected optical [Fe II] lines are shown to be correlated with the intensity of the apparent nebular continuous spectrum. Since the continuum of H II regions is known to be mostly stellar radiation scattered by dust intermixed with the emitting gas, these correlations provide direct evidence for the existence of fluorescent excitation in the formation process of the [Fe II] lines, irrespective of the prevailing physical state.

M. Rodriguez

1999-06-17T23:59:59.000Z

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


421

No. 3-2007 (Volume 60) ZKG INTERNATIONAL Material Science  

E-Print Network [OSTI]

Dämme, wichtig ist. Die Produktion von Port- landzement erfordert eine beachtliche Menge an Energie (0Wh/kg cement). Advances in technology have reduced the energy consumption associ- ated with cement production, roads and dams. The production of Portland cement requires considerable energy (0.2 to 0.35 k

Vandenbossche, Julie M.

422

Ribosomal Database Project II  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The Ribosomal Database Project (RDP) provides ribosome related data and services to the scientific community, including online data analysis and aligned and annotated Bacterial small-subunit 16S rRNA sequences. As of March 2008, RDP Release 10 is available and currently (August 2009) contains 1,074,075 aligned 16S rRNA sequences. Data that can be downloaded include zipped GenBank and FASTA alignment files, a histogram (in Excel) of the number of RDP sequences spanning each base position, data in the Functional Gene Pipeline Repository, and various user submitted data. The RDP-II website also provides numerous analysis tools.[From the RDP-II home page at http://rdp.cme.msu.edu/index.jsp

423

PARS II TRAINING | Department of Energy  

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

TRAINING PARS II TRAINING BASICS TRAINING WORKBOOK PARS II TRAINING More Documents & Publications PARS II PARS II Training Workbook (Course 103) PARSIIUserGuideV1.0Draft.pdf...

424

SRC-II process  

SciTech Connect (OSTI)

Extensive laboratory and pilot plant experimental work on the Solvent Refined Coal Process has led to the development of an improved version of the process known as SRC-II. This work has shown considerable promise and plans are being made to demonstrate the SRC-II process using commercial size equipment in a 6000 T/D plant to be located near Morgantown, West Virginia. On the basis of recent economic studies, the products (both liquid and gas) from a future large-scale commercial plant are expected to have an overall selling price of $4.00 to 5.00 per million Btu (first quarter 1980 basis). The major product of the primary process is distillate fuel oil of less than 0.3% sulfur for use largely as a non-polluting fuel for generating electrical power and steam, especially in the east where utilities and industry are presently using petroleum products. For the longer term, the major growth opportunity for SRC-II fuel oil in the generation of electric power will probably be through advanced combustion turbine units with heat recovery boilers (combined cycle units). The light liquid fractions (naphtha and middle distillate) produced by the SRC-II process can be upgraded to a high octane unleaded gasoline to supplement petroleum-derived supplies. Significant quantities of pipeline gas are also produced at a cost which should be competitive with SNG from direct coal gasification. Light hydrocarbons (ethane, propane) from the process may be effectively converted to ethylene in conventional cracking plants to offset ethylene demand from petroleum-derived naphtha and gas oil, both of which could otherwise be used for other refinery products. In addition, certain fraction of the fuel oil might also be used in medium speed diesel engines and automotive gas turbines.

Schmid, B.K.; Jackson, D.M.

1980-01-01T23:59:59.000Z

425

Energy Efficient Microwave Hybrid Processing of Lime for Cement, Steel, and Glass Industries  

SciTech Connect (OSTI)

In this study, the microwave materials interactions were studied through dielectric property measurements, process modeling, and lab scale microwave hybrid calcination tests. Characterization and analysis were performed to evaluate material reactions and energy usage. Processing parameters for laboratory scale and larger scale calcining experiments were developed for MAT limestone calcination. Early stage equipment design concepts were developed, with a focus on microwave post heating treatment. The retrofitting of existing rotary calcine equipment in the lime industry was assessed and found to be feasible. Ceralink sought to address some of the major barriers to the uptake of MAT identified as the need for (1) team approach with end users, technology partners, and equipment manufacturers, (2) modeling that incorporates kiln materials and variations to the design of industrial microwave equipment. This project has furthered the commercialization effort of MAT by working closely with an industrial lime manufacturer to educate them regarding MAT, identifying equipment manufacturer to supply microwave equipment, and developing a sophisticated MAT modeling with WPI, the university partner. MAT was shown to enhance calcining through lower energy consumption and faster reaction rates compared to conventional processing. Laboratory testing concluded that a 23% reduction in energy was possible for calcining small batches (5kg). Scale-up testing indicated that the energy savings increased as a function of load size and 36% energy savings was demonstrated (22 kg). A sophisticated model was developed which combines simultaneous microwave and conventional heating. Continued development of this modeling software could be used for larger scale calcining simulations, which would be a beneficial low-cost tool for exploring equipment design prior to actual building. Based on these findings, estimates for production scale MAT calcining benefits were calculated, assuming uptake of MAT in the US lime industry. This estimate showed that 7.3 TBTU/year could be saved, with reduction of 270 MMlbs of CO2 emissions, and $29 MM/year in economic savings. Taking into account estimates for MAT implementation in the US cement industry, an additional 39 TBTU/year, 3 Blbs of CO2 and $155 MM/year could be saved. One of the main remaining barriers to commercialization of MAT for the lime and cement industries is the sheer size of production. Through this project, it was realized that a production size MAT rotary calciner was not feasible, and a different approach was adapted. The concept of a microwave post heat section located in the upper portion of the cooler was devised and appears to be a more realistic approach for MAT implementation. Commercialization of this technology will require (1) continued pilot scale calcining demonstrations, (2) involvement of lime kiln companies, and (3) involvement of an industrial microwave equipment provider. An initial design concept for a MAT post-heat treatment section was conceived as a retrofit into the cooler sections of existing lime rotary calciners with a 1.4 year payback. Retrofitting will help spur implementation of this technology, as the capital investment will be minimal for enhancing the efficiency of current rotary lime kilns. Retrofits would likely be attractive to lime manufacturers, as the purchase of a new lime kiln is on the order of a $30 million dollar investment, where as a MAT retrofit is estimated on the order of $1 million. The path for commercialization lies in partnering with existing lime kiln companies, who will be able to implement the microwave post heat sections in existing and new build kilns. A microwave equipment provider has been identified, who would make up part of the continued development and commercialization team.

Fall, Morgana L; Yakovlev, Vadim; Sahi, Catherine; Baranova, Inessa; Bowers, Johnney G; Esquenazi\t, Gibran L

2012-02-10T23:59:59.000Z

426

MOBILIZATION AND CHARACTERIZATION OF COLLOIDS GENERATED FROM CEMENT LEACHATES MOVING THROUGH A SRS SANDY SEDIMENT  

SciTech Connect (OSTI)

Naturally occurring mobile colloids are ubiquitous and are involved in many important processes in the subsurface zone. For example, colloid generation and subsequent mobilization represent a possible mechanism for the transport of contaminants including radionuclides in the subsurface environments. For colloid-facilitated transport to be significant, three criteria must be met: (1) colloids must be generated; (2) contaminants must associate with the colloids preferentially to the immobile solid phase (aquifer); and (3) colloids must be transported through the groundwater or in subsurface environments - once these colloids start moving they become 'mobile colloids'. Although some experimental investigations of particle release in natural porous media have been conducted, the detailed mechanisms of release and re-deposition of colloidal particles within natural porous media are poorly understood. Even though this vector of transport is known, the extent of its importance is not known yet. Colloid-facilitated transport of trace radionuclides has been observed in the field, thus demonstrating a possible radiological risk associated with the colloids. The objective of this study was to determine if cementitious leachate would promote the in situ mobilization of natural colloidal particles from a SRS sandy sediment. The intent was to determine whether cementitious surface or subsurface structure would create plumes that could produce conditions conducive to sediment dispersion and mobile colloid generation. Column studies were conducted and the cation chemistries of influents and effluents were analyzed by ICP-OES, while the mobilized colloids were characterized using XRD, SEM, EDX, PSD and Zeta potential. The mobilization mechanisms of colloids in a SRS sandy sediment by cement leachates were studied.

Li, D.; Roberts, K.; Kaplan, D.; Seaman, J.

2011-09-20T23:59:59.000Z

427

Recycling of the product of thermal inertization of cement-asbestos for various industrial applications  

SciTech Connect (OSTI)

Recycling of secondary raw materials is a priority of waste handling in the countries of the European community. A potentially important secondary raw material is the product of the thermal transformation of cement-asbestos, produced by prolonged annealing at 1200-1300 {sup o}C. The product is chemically comparable to a Mg-rich clinker. Previous work has assured the reliability of the transformation process. The current challenge is to find potential applications as secondary raw material. Recycling of thermally treated asbestos-containing material (named KRY.AS) in traditional ceramics has already been studied with successful results. The results presented here are the outcome of a long termed project started in 2005 and devoted to the recycling of this secondary raw materials in various industrial applications. KRY.AS can be added in medium-high percentages (10-40 wt%) to commercial mixtures for the production of clay bricks, rock-wool glasses for insulation as well as Ca-based frits and glass-ceramics for the production of ceramic tiles. The secondary raw material was also used for the synthesis of two ceramic pigments; a green uvarovite-based pigment [Ca{sub 3}Cr{sub 2}(SiO{sub 4}){sub 3}] and a pink malayaite-based pigment [Ca(Sn,Cr)SiO{sub 5}]. The latter is especially interesting as a substitute for cadmium-based pigments. This work also shows that KRY.AS can replace standard fillers in polypropylene plastics without altering the properties of the final product. For each application, a description and relevant results are presented and discussed.

Gualtieri, Alessandro F., E-mail: alessandro.gualtieri@unimore.it [Dipartimento di Scienze della Terra, Universita di Modena e R.E., Via S. Eufemia 19, I-41100 Modena (Italy); Giacobbe, Carlotta; Sardisco, Lorenza; Saraceno, Michele [Dipartimento di Scienze della Terra, Universita di Modena e R.E., Via S. Eufemia 19, I-41100 Modena (Italy); Lassinantti Gualtieri, Magdalena [Dipartimento Ingegneria dei Materiali e dell'Ambiente, Universita di Modena e Reggio Emilia, Via Vignolese 905/a, I-41100 Modena (Italy); Lusvardi, Gigliola [Dipartimento di Chimica, Universita degli Studi di Modena e Reggio Emilia, Via G. Campi 183, I-41100 Modena (Italy); Cavenati, Cinzia; Zanatto, Ivano [ZETADI S.r.l., Via dell'Artigianato 10, Ferno (Italy)

2011-01-15T23:59:59.000Z

428

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The Bonneville Power Administration (BPA) is designing its Integrated Program Review (IPR) process for the Fiscal Year 2014-2015 rate period. The IPR is a consolidated...

429

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Bonneville Power Administration's (BPA) proposed schedule for the 2007 Supplemental Wholesale Power (WP-07) Rate Case that will revise its power rates for Fiscal Year 2009 in...

430

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12, 2011 In reply refer to: DKR-7 To Customers and Interested Parties: The Bonneville Power Administration's (BPA) annual report is out, and for the first time in three years, BPA...

431

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R. HASS (IG-30) DEPUTY INSPECTOR GENERAL FOR AUDITS AND INSPECTIONS FROM: STEPHEN J. WRIGHT ADMINISTRATOR AND CHIEF EXECUTIVE OFFICER SUBJECT: RESPONSE TO DRAFT AUDIT REPORT ON...

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Thank you for your interest in maintaining reliable power system operation and fish protection during occasional periods of high water in the Columbia River system. More...

433

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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006PhotovoltaicSeptember 22, 2014 In reply refer to: PE-1 Dear

434

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435

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436

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437

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438

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439

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440

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Note: This page contains sample records for the topic "ii portland cement" from the National Library of EnergyBeta (NLEBeta).
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441

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442

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443

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444

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445

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446

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447

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448

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449

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450

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451

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452

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453

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454

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455

A Review of Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

- Environmental Advantages. Available at http://www.ceratechinc.com/environmental- advantages.asp Cross, D., J. Stephens, J. Vollmer. 2005. Structural Applications of 100 Percent Fly Ash Concrete. 2005 World of Coal Ash (WOCA), Lexington, Kentucky, USAApril...://recocement.com/ Roskos, C., D. Cross, M. Berry, J. Stephens. 2011. Identification and Verification of Self-Cementing Fly Ash Binders for ?Green? Concrete. 2011 World of Coal Ash (WOCA) Conference ? May 9-12, 2011 in Denver CO, USA. Available at www.flyash.info/2011...

Hasanbeigi, A.; Price, L.; Lin, E.

2012-01-01T23:59:59.000Z

456

Evaluation of Type I cement sorbent slurries in the U.C. pilot spray dryer facility. Final report, November 1, 1994--February 28, 1996  

SciTech Connect (OSTI)

This research was focused on evaluating hydrated cement sorbents in the U. C. pilot spray dryer. The main goal of this work was to determine the hydration conditions resulting in reactive hydrated cement sorbents. Hydration of cement was achieved by stirring or by grinding in a ball mill at either room temperature or elevated temperatures. Also, the effects of several additives were studied. Additives investigated include calcium chloride, natural diatomite, calcined diatomaceous earth, and fumed silica. The performance of these sorbents was compared with conventional slaked lime. Further, the specific surface area and pore volume of the dried SDA sorbents were measured and compared to reactivity. Bench-scale tests were performed to obtain a more detailed picture of the development of the aforementioned physical properties as a function of hydration time.

Keener, T.C.; Khang, S.J.

1996-07-31T23:59:59.000Z

457

Solid-phase synthesis of high-alumina cements by high-temperature treatment on the surface of molten cast iron  

SciTech Connect (OSTI)

The use of block and monolithic concreting technology in the construction of thermal power plants together with the technical and economic advantages arising from the use of high-alumina cements in the production of refractory concretes have made the development of new methods for the production of high-alumina cement clinkers mandatory. To this end the authors of this paper study the kinetics of synthesis of such clinkers obtained by their firing on the surface of molten cast iron as the heat transfer agent. Among the results presented are a structural and quantitative analysis of the clinker along with phase and activation energy studies.

Fedorov, N.F.; Gavrilov, A.P.; Ivanov, N.I.; Khalina, O.M.

1986-09-10T23:59:59.000Z

458

ARM - RHUBC II Instruments  

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459

PART II - CONTRACT CLAUSES  

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460

Evaluation of the computerized procedures Manual II (COPMA II)  

SciTech Connect (OSTI)

The purpose of this study was to evaluate the effects of a computerized procedure system, the Computerized Procedure Manual II (COPMA-II), on the performance and mental workload of licensed reactor operators. To evaluate COPMA-II, eight teams of two operators were trained to operate a scaled pressurized water reactor facility (SPWRF) with traditional paper procedures and with COPMA-II. Following training, each team operated the SPWRF under normal operating conditions with both paper procedures and COPMA-II. The teams then performed one of two accident scenarios with paper procedures, but performed the remaining accident scenario with COPMA-II. Performance measures and subjective estimates of mental workload were recorded for each performance trial. The most important finding of the study was that the operators committed only half as many errors during the accident scenarios with COPMA-II as they committed with paper procedures. However, time to initiate a procedure was fastest for paper procedures for accident scenario trials. For performance under normal operating conditions, there was no difference in time to initiate or to complete a procedure, or in the number of errors committed with paper procedures and with COPMA-II. There were no consistent differences in the mental workload ratings operators recorded for trials with paper procedures and COPMA-II.

Converse, S.A. [North Carolina State Univ., Raleigh, NC (United States)

1995-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "ii portland cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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461

PROGRAMA FISICA II. INTRODUCCI O  

E-Print Network [OSTI]

PROGRAMA F´ISICA II. INTRODUCCI ´O I ELECTRICITAT I.1 Camp electrost`atic I.2 Potencial i energia I.4 `Optica #12;BIBLIOGRAFIA B`asica 1. Tipler, P.A. F´isica. Vol. II, ed. Revert´e, 1992. 2. Purcell Blum, R. F´isica: Electricidad, Mag- netismo y Luz. Vol. II, ed. Revert´e, 1986. Complement`aria 1

Batiste, Oriol

462

Supernovae. Part II: The aftermath  

E-Print Network [OSTI]

R. Viswanathan, 1980, As- Supernovae. Part II ExperimentalSmith, 1982, Astrophys. Supernovae. Chevalier, R. A. , andC. B. , 1974, Ed. , Supernovae and Supernova Rem- nants,

Trimble, V

1983-01-01T23:59:59.000Z

463

Development of grout formulations for 106-AN waste: Mixture-experiment results and analysis. Volume 1, Narrative and recommendations  

SciTech Connect (OSTI)

Twenty potential ingredients were identified for use in developing a 106-AN grout formulation, and 18 were subsequently obtained and tested. Four ingredients-Type II-LA (moderate heat of hydration) Portland cement, Class F fly ash, attapulgite 150 drilling clay, and ground air-cooled blast-furnace slag (GABFS) were selected for developing the 106-AN grout formulations. A mixture experiment was designed and conducted around the following formulation: 2.5 lb of cement per gallon, 1.2 lb of fly ash per gallon, 0.8 lb of attapulgite per gallon, and 3.5 lb of GABFS per gallon. Reduced empirical models were generated from the results of the mixture experiment. These models were used to recommend several grout formulations for 106-AN. Westinghouse Hanford Company selected one of these formulations to be verified for use with 106-AN and a backup formulation in case problems arise with the first choice.

Spence, R.D.; McDaniel, E.W. [Oak Ridge National Lab., TN (United States); Anderson, C.M.; Lokken, R.O.; Piepel, G.F. [Pacific Northwest Lab., Richland, WA (United States)

1993-09-01T23:59:59.000Z

464

Phase II Final Report  

SciTech Connect (OSTI)

The SkyTrough DSP will advance the state-of-the-art in parabolic troughs for utility applications, with a larger aperture, higher operating temperature, and lower cost. The goal of this project was to develop a parabolic trough collector that enables solar electricity generation in the 2020 marketplace for a 216MWe nameplate baseload power plant. This plant requires an LCOE of 9/kWhe, given a capacity factor of 75%, a fossil fuel limit of 15%, a fossil fuel cost of $6.75/MMBtu, $25.00/kWht thermal storage cost, and a domestic installation corresponding to Daggett, CA. The result of our optimization was a trough design of larger aperture and operating temperature than has been fielded in large, utility scale parabolic trough applications: 7.6m width x 150m SCA length (1,118m2 aperture), with four 90mm diameter 4.7m receivers per mirror module and an operating temperature of 500C. The results from physical modeling in the System Advisory Model indicate that, for a capacity factor of 75%: The LCOE will be 8.87/kWhe. SkyFuel examined the design of almost every parabolic trough component from a perspective of load and performance at aperture areas from 500 to 2,900m2. Aperture-dependent design was combined with fixed quotations for similar parts from the commercialized SkyTrough product, and established an installed cost of $130/m2 in 2020. This project was conducted in two phases. Phase I was a preliminary design, culminating in an optimum trough size and further improvement of an advanced polymeric reflective material. This phase was completed in October of 2011. Phase II has been the detailed engineering design and component testing, which culminated in the fabrication and testing of a single mirror module. Phase II is complete, and this document presents a summary of the comprehensive work.

Schuknecht, Nate [Project Manager; White, David [Principle Investigator; Hoste, Graeme [Research Engineer

2014-09-11T23:59:59.000Z

465

CSC6870 Computer Graphics II Bezier Curves  

E-Print Network [OSTI]

CSC6870 Computer Graphics II Bezier Curves CSC6870 Computer Graphics II Bezier Curve CSC6870 Computer Graphics II Cubic Bezier Curves · Curve: · Control points · Basis functions: = = 3 0 3 )()( i ii uBpuc ip CSC6870 Computer Graphics II Bezier Curves (degree n) · Curve: · Control points · Basis functions

Hua, Jing

466

CSC6870 Computer Graphics II Geometric Modeling  

E-Print Network [OSTI]

CSC6870 Computer Graphics II Geometric Modeling CSC6870 Computer Graphics II Overview 3D Shape, subdivision surfaces, implicit surfaces, particles. · Solids CSC6870 Computer Graphics II Basic Shapes CSC6870 Computer Graphics II Fundamental Shapes CSC6870 Computer Graphics II Fundamental Shapes CSC6870 Computer

Hua, Jing

467

National Synchrotron Light Source II  

ScienceCinema (OSTI)

The National Synchrotron Light Source II (NSLS-II) at the U.S. Department of Energy's Brookhaven National Laboratory is a proposed new state-of-the-art medium energy storage ring designed to deliver world-leading brightness and flux with top-off operation

Steve Dierker

2010-01-08T23:59:59.000Z

468

Market-Based Emissions Regulation and Industry Dynamics  

E-Print Network [OSTI]

We assess the long-run dynamic implications of market-based regulation of carbon dioxide emissions in the US Portland cement industry. We consider several alternative policy designs, including mechanisms that use production ...

Fowlie, Meredith

469

Aspect Ratio Effect of Functionalized/Non-Functionalized Multiwalled Carbon Nanotubes on the Mechanical Properties of Cementitious Materials  

E-Print Network [OSTI]

The focus of this research was to investigate the use of functionalized/non-functionalized multi walled carbon nanotubes (MWCNTs) as reinforcements for the Portland cement paste. The unique geometrical characteristics of the carbon nanotubes (CNTs...

Ashour, Ahmad

2012-10-19T23:59:59.000Z

470

Utilizing New Binder Materials for Green Building has Zero Waste by Recycling Slag and Sewage Sludge Ash  

E-Print Network [OSTI]

binding material to save energy and to produce new innovative zero materials waste . The current research aims to investigate new binder materials as alternative of Portland cement. Alkali activated slag (AAS) blended with sewage sludge ash (SSA...

Zeedan, S. R.

2010-01-01T23:59:59.000Z

471

avaetapi finish oli: Topics by E-print Network  

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

Akvil? 2012-01-01 12 Wearability of Portland Cement Concrete Pavement Finishes Texas A&M University - TxSpace Summary: fine aggregate types: a siliceous sand (SF), also...

472

Strategies for mitigating adverse environmental impacts due to structural building materials  

E-Print Network [OSTI]

This thesis assesses the problem of adverse environmental impacts due to the use of Portland cement and structural steel in the construction industry. The thesis outlines three technology and policy strategies to mitigate ...

Chaturvedi, Swati, 1976-

2004-01-01T23:59:59.000Z

473

How did you get interested  

E-Print Network [OSTI]

control how much Portland cement goes into a mix. To me, the most promising research on the ecological and the Nuclear Decommission- ing Authority, I'm working on structures to house nuclear waste. One member

Cai, Long

474

Solidification/stabilization of simulated uranium and nickel contaminated sludges  

E-Print Network [OSTI]

in this research which focused on better understanding the Solidification/Stabilization (S/S) chemistry, complex waste-binder interactions, and the suitability and effectiveness of additives in the Portland cement based treatment systems. The treatability...

Ramabhadran, Sanjay

1996-01-01T23:59:59.000Z

475

Determining the leaching characteristics of solidified/stabilized wastes using constant pH leaching tests  

E-Print Network [OSTI]

Solidification/Stabilization treatment using Portland cement is an established procedure in the management of hazardous wastes. The technology is relatively simple, cheap, and highly reliable in prohibiting the migration of hazardous contaminants...

Sofjan, Indratjahja

1995-01-01T23:59:59.000Z

476

Sensitivity Analysis of 2002 Design Guide Distress Prediction Models for Jointed Plain Concrete Pavement  

E-Print Network [OSTI]

for Jointed Plain Concrete Pavement Venkata Kannekanti andfeatures, portland cement concrete (PCC) strength, andj o i n t e d p l a i n concrete pavement (JPCP) module o f

Kannekanti, Venkata N.; Harvey, John T

2007-01-01T23:59:59.000Z

477

PARS II KNOWN ISSUES AND SUGGESTED WORKAROUNDS  

Energy Savers [EERE]

screen, the following workaround is suggested: Close all browser windows (PARS II and web applications). Reopen a browser and proceed with the PARS II log-in. PARS II does...

478

By-Products Utilization  

E-Print Network [OSTI]

addition for mortars and concretes, especially for self-compacting concrete. This marble powder showed on self-compacting concrete mixtures (1-6). MATERIALS Portland Cement A commercial portland AND CONCRETE By Valeria Corinaldesi, Giacomo Moriconi, and Tarun R. Naik Report No. CBU-2005-09 REP-580 August

Wisconsin-Milwaukee, University of

479

Webinar: Systems Performance Advancement II Funding Opportunity...  

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

Webinar: Systems Performance Advancement II Funding Opportunity Announcement Webinar: Systems Performance Advancement II Funding Opportunity Announcement January 22, 2015 2:00PM to...

480

A multi-component partitioning model to predict organic leaching from stabilized/solidified oily wastes  

E-Print Network [OSTI]

42 44 44 Figure 12. 3 Pseudo-Component Model using Modified K values, j = 1 Figure 13. TOC Leaching Rate from a Solidified Oily Waste, . ????, 46 50 LIST OF TABLES Table 1. Composition of Ordinary Portland Cement Table 2. Basic Hydration.... Ordinary Portland Cement (OPC) and flyash are common binders of choice as they are inexpensive, stable against damage and fire, and methods of mixing and processing them are well understood. Poor treatment efficiencies have been found when solidifying...

O'Cleirigh, Declan Ronan

1997-01-01T23:59:59.000Z

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


481

Effects of mineral fillers in slurry seal mixtures  

E-Print Network [OSTI]

rather than a desi~. The current practice among engineers and contractors is to prepare a mixture in ac- cordance with these specifications using local materials. In many cases a mineral filler, usually portland cement, is added to "improve... applied to portland cement concrete pavements to improve the skid resistance and riding qualities of tbe surface. A slurry seal cost does not increase or improve the strength of the pavement structure . The City of Las Vagas, New Mexico, used slurry...

Harper, William Joe

1964-01-01T23:59:59.000Z

482

The effect of additives on effective diffusivities in solidified/stabilized wastes  

E-Print Network [OSTI]

of Technology; Chair of Advisory Committee: Dr. Bill Batchelor The electrical conductivity method is capable of predicting effective diffusivity of ions in a solidified portland cement matrix in a relatively short period of time. The usefulness... of this method in determining the effective diffusivities of ions through wastes treated by mixtures of portland cement and various additives, and the effectiveness of the additives to promote physical immobilization are investigated. The electrical...

Kyi, Aye Aye

1992-01-01T23:59:59.000Z

483

Evaluation of the performance of polypropylene fibers on soil stabilization  

E-Print Network [OSTI]

, Chattanooga, TN 37416. Its product name is "Fibergrids". These are one inch long 1000 denier fibers having a specific gravity of 0. 91. Sand (SM) was stabilized with type I portland cement and clay (CL) was stabilized with lime. Moisture-Density tests... of soil aggregates, especially when small contents of chemical stabilizer (portland cement or lime) was added and the stress-strain curves for these composites have increased post cracking ductility which is an important property where there is impact...

Sangineni, Srinivas Meherji

1992-01-01T23:59:59.000Z

484

The effect of neutralization on compressive strength of stabilized phosphogypsum  

E-Print Network [OSTI]

is not homogeneously distributed among the solids in phosphcgypsum, neutralization curves were not reproducible. Moreover, the time required to achieve equilibrium pH depends on the type and amount of neutralizer. For portland cement stabilized phosphogypsum..., it was found that during initial stages of strength development (3 days) in partly and fully neutralized phosphogypsum and with low amounts of stabilizers (3 and 6 percent portland cement) after curing for 7 and 28 days the type of alkali has no significant...

Yung, Chung Che

1985-01-01T23:59:59.000Z

485

The utilization of flue gas desulfurization waste by-products in construction brick  

E-Print Network [OSTI]

APPENDIX D. TEST PROCEDURES APPENDIX E. CONVERSION TABLES VITA 85 90 93 96 99 LIST OF FIGURES Figure Page Model for FGD Waste By-Product Research Unconfined Compressive Strength for Fly Ash Mixed with Various Inductions of Portland Cement 15... properties such as weight, durability, strength, density, etc. Varying mixes of bottom ash, fly ash, portland cement, and sand will be tested for possible enhancement of the hemihydrate. Also, a mix design that best utilizes all the waste by...

Berryman, Charles Wayne

1992-01-01T23:59:59.000Z

486

Options Study - Phase II  

SciTech Connect (OSTI)

The Options Study has been conducted for the purpose of evaluating the potential of alternative integrated nuclear fuel cycle options to favorably address the issues associated with a continuing or expanding use of nuclear power in the United States. The study produced information that can be used to inform decisions identifying potential directions for research and development on such fuel cycle options. An integrated nuclear fuel cycle option is defined in this study as including all aspects of the entire nuclear fuel cycle, from obtaining natural resources for fuel to the ultimate disposal of used nuclear fuel (UNF) or radioactive wastes. Issues such as nuclear waste management, especially the increasing inventory of used nuclear fuel, the current uncertainty about used fuel disposal, and the risk of nuclear weapons proliferation have contributed to the reluctance to expand the use of nuclear power, even though it is recognized that nuclear power is a safe and reliable method of producing electricity. In this Options Study, current, evolutionary, and revolutionary nuclear energy options were all considered, including the use of uranium and thorium, and both once-through and recycle approaches. Available information has been collected and reviewed in order to evaluate the ability of an option to clearly address the challenges associated with the current implementation and potential expansion of commercial nuclear power in the United States. This Options Study is a comprehensive consideration and review of fuel cycle and technology options, including those for disposal, and is not constrained by any limitations that may be imposed by economics, technical maturity, past policy, or speculated future conditions. This Phase II report is intended to be used in conjunction with the Phase I report, and much information in that report is not repeated here, although some information has been updated to reflect recent developments. The focus in this Options Study was to identify any nuclear fuel cycle technology or option that may result in a significant beneficial impact to the issues as compared to the current U.S. approach of once-through use of nuclear fuel in LWRs or similar reactors followed by direct disposal of UNF. This approach was taken because incremental differences may be difficult to clearly identify and justify due to the large uncertainties that can be associated with the specific causes of the issues. Phase II of this Options Study continued the review of nuclear fuel cycle options that was initiated and documented during Phase I, concentrating on reviewing and summarizing the potential of integrated nuclear fuel cycles. However, based on the reviews of previous studies and available data, it was not always possible to clearly determine sufficiently large differences between the various fuel cycle and technology options for some of the issues or evaluation measures, for example, in cases where only incremental differences with respect to the issues might be achieved regardless of the fuel cycle option or technologies being considered, or where differences were insufficient to clearly rise above the uncertainties.

R. Wigeland; T. Taiwo; M. Todosow; W. Halsey; J. Gehin

2010-09-01T23:59:59.000Z

487

Super KEKB / Belle II Project  

E-Print Network [OSTI]

We present the status of the KEKB collider and the Belle detector upgrade, along with several examples of physics measurements to be performed with Belle II at Super KEKB.

B. Golob

2010-06-22T23:59:59.000Z

488

Environmental Chemistry II (Atmospheric Chemistry)  

E-Print Network [OSTI]

Seinfeld, J. H. and Pandis, S. N. Atmospheric Chemistry and Physics: From Air Pollution to Climate ChangeSYLLABUS FOR Environmental Chemistry II (Atmospheric Chemistry) FCH 511 Fall 2013 Theodore S

Dibble, Theodore

489

Chemomechanics of calcium leaching of cement-based materials at different scales : the role of CH-dissolution and C-S-H degradation on strength and durability performance of materials and structures  

E-Print Network [OSTI]

Calcium leaching is a durability threat for cement-based materials employed in critical infrastructures, such as Nuclear Waste Storage Systems. This thesis presents a comprehensive study of the material and structural ...

Heukamp, Franz H. (Franz Hoyte), 1973-

2003-01-01T23:59:59.000Z

490

Passamaquoddy Technology Recovery Scrubber{trademark} at the Dragon Products, Inc. Cement Plant located in Thomaston, Maine. 1990 Annual technical report  

SciTech Connect (OSTI)

The background and process of the Passamaquoddy Technology Recovery Scrubber{trademark} are described. The Scrubber was developed for Dragon Cement Plant in Thomaston, Maine and facilitates a number of process improvements. The exhaust gas is scrubbed of SO{sub 2} with better than 90% efficiency. The kiln dust is cleaned of alkalines and so can be returned to kiln feed instead of dumped to landfill. Potassium sulfate in commercial quantity and purity can be recovered. Distilled water is recovered which also has commercial potential. Thus, various benefits are accrued and no waste streams remain for disposal. The process is applicable to both wet and dry process cement kilns and appears to have potential in any industry which generates acidic gaseous exhausts and/or basic solid or liquid wastes.

Not Available

1990-12-31T23:59:59.000Z

491

Reduction of NO{sub x} emissions from cement kiln/calciner through the use of the NO{sub x}OUT process  

SciTech Connect (OSTI)

The post combustion reduction of NO{sub x} using urea has proven to be an effective method in controlling NO{sub x} from various combustion sources. This process, a selective non-catalytic reduction process known as NO{sub x}OUT, has been successfully demonstrated in a cement kiln/calciner operated by Ash Grove Cement. Testing was done under ten different kiln/calciner operating conditions. Using three to four injectors, NO{sub x} was efficiently reduced from 350--600 pounds per hour (3.5--6.0 lb/ton of clinker) to less than 100 pounds per hour (1.0 lb/ton of clinker). This calculates to a NO{sub x} reduction of > 80% for most cases. Chemical utilization was greater than 50%. A high degree of mixing and a long residence time at an appropriate temperature present in the preheater tower contributed to these excellent results. An average ammonia slip was four ppm above a baseline level at normalized stoichiometric ratio of 1. Based on this demonstration, cement kiln/calciners have been identified as an ideal application for the NO{sub x}OUT Process. NO{sub x} was efficiently and effectively reduced with minimal byproduct emissions and virtually no effect on plant operations.

Sun, W.H. [Nalco Fuel Tech., Naperville, IL (United States); Bisnett, M.J.; Kirk, D.W. [Nalco Fuel Tech, Santa Fe Springs, CA (United States); Steuch, H.E. [Ash Grove Cement Co., Portland, OR (United States); Hille, J. [Ash Grove Cement Co., Seattle, WA (United States)

1994-12-31T23:59:59.000Z

492

Active wear and failure mechanisms of TiN-coated high speed steel and TiN-coated cemented carbide tools when machining powder metallurgically made stainless steels  

SciTech Connect (OSTI)

In this study, active wear and failure mechanisms of both TiN-coated high speed steel and TiN-coated cemented carbide tools when machining stainless steels made by powder metallurgy in low and high cutting speed ranges, respectively, have been investigated. Abrasive wear mechanisms, fatigue-induced failure, and adhesive and diffusion wear mechanisms mainly affected the tool life of TiN-coated high speed steel tools at cutting speeds below 35 m/min, between 35 and 45 m/min, and over 45 m/min, respectively. Additionally, fatigue-induced failure was active at cutting speeds over 45 m/min in the low cutting speed range when machining powder metallurgically made duplex stainless steel 2205 and austenitic stainless steel 316L. In the high cutting speed range, from 100 to 250 m/min, fatigue-induced failure together with diffusion wear mechanism, affected the tool life of TiN-coated cemented carbide tools when machining both 316L and 2205 stainless steels. It was noticed that the tool life of TiN-coated high speed steel tools used in the low cutting speed range when machining 2205 steel was longer than that when machining 316L steel, whereas the tool life of TiN-coated cemented carbide tools used in the high cutting speed range when machining 316L steel was longer than that when machining 2205 steel.

Jiang, L.; Haenninen, H.; Paro, J.; Kauppinen, V. [Helsinki Univ. of Technology, Espoo (Finland)

1996-09-01T23:59:59.000Z

493

Multi-Megawatt Organic Rankine Engine power plant (MORE). Phase IA final report: system design of MORE power plant for industrial energy conservation emphasizing the cement industry  

SciTech Connect (OSTI)

The Multi-Megawatt Organic Rankine Engine (MORE) program is directed towards the development of a large, organic Rankine power plant for energy conservation from moderate temperature industrial heat streams. Organic Rankine power plants are ideally suited for use with heat sources in the temperature range below 1100/sup 0/F. Cement manufacture was selected as the prototype industry for the MORE system because of the range of parameters which can be tested in a cement application. This includes process exit temperatures of 650/sup 0/F to 1110/sup 0/F for suspension preheater and long dry kilns, severe dust loading, multi-megawatt power generation potential, and boiler exhaust gas acid dew point variations. The work performed during the Phase IA System Design contract period is described. The System Design task defines the complete MORE system and its installation to the level necessary to obtain detailed performance maps, equipment specifications, planning of supporting experiments, and credible construction and hardware cost estimates. The MORE power plant design is based upon installation in the Black Mountain Quarry Cement Plant near Victorville, California.

Bair, E.K.; Breindel, B.; Collamore, F.N.; Hodgson, J.N.; Olson, G.K.

1980-01-31T23:59:59.000Z

494

LABORATORY REPORT ON THE REDUCTION AND STABILIZATION (IMMOBILIZATION) OF PERTECHNETATE TO TECHNETIUM DIOXIDE USING TIN(II)APATITE  

SciTech Connect (OSTI)

This effort is part of the technetium management initiative and provides data for the handling and disposition of technetium. To that end, the objective of this effort was to challenge tin(II)apatite (Sn(II)apatite) against double-shell tank 241-AN-105 simulant spiked with pertechnetate (TcO{sub 4}{sup -}). The Sn(II)apatite used in this effort was synthesized on site using a recipe developed at and provided by Sandia National Laboratories; the synthesis provides a high quality product while requiring minimal laboratory effort. The Sn(II)apatite reduces pertechnetate from the mobile +7 oxidation state to the non-mobile +4 oxidation state. It also sequesters the technetium and does not allow for re-oxidization to the mo bile +7 state under acidic or oxygenated conditions within the tested period oftime (6 weeks). Previous work (RPP-RPT-39195, Assessment of Technetium Leachability in Cement-Stabilized Basin 43 Groundwater Brine) indicated that the Sn(II)apatite can achieve an ANSI leachability index in Cast Stone of 12.8. The technetium distribution coefficient for Sn(II)apatite exhibits a direct correlation with the pH of the contaminated media. Table A shows Sn(II)apatite distribution coefficients as a function of pH. The asterisked numbers indicate that the lower detection limit of the analytical instrument was used to calculate the distribution coefficient as the concentration of technetium left in solution was less than the detection limit. The loaded sample (200 mg of Sn(II)apatite loaded with O.311 mg of Tc-99) was subjected to different molarities of nitric acid to determine if the Sn(II)apatite would release the sequestered technetium. The acid was allowed to contact for 1 minute with gentle shaking ('1st wash'); the aqueous solution was then filtered, and the filtrate was analyzed for Tc-99. Table B shows the results ofthe nitric acid exposure. Another portion of acid was added, shaken for a minute, and filtered ('2nd wash'). The technetium-loaded Sn(II)apatite was also subjected to water leach tests. The loaded sample (0.2 g of Sn(II)apatite was loaded with 0.342 mg of Tc-99) was placed in a 200-mL distilled water column and sparged with air. Samples were taken weekly over a 6-week period, and the dissolved oxygen ranged from 8.4 to 8.7 mg/L (average 8.5 mg/L); all samples recorded less than the detection limit of 0.01 mg/L Tc-99. The mechanism by which TcO{sub 2} is sequestered and hence protected from re-oxidation appears to be an exchange with phosphate in the apatite lattice, as the phosphorus that appeared in solution after reaction with technetium was essentially the same moles of technetium that were taken up by the Sn(II)apatite (Table 6). Overall, the reduction of the mobile pertechnetate (+7) to the less mobile technetium dioxide (+4) by Sn(II)apatite and subsequent sequestration of the technetium in the material indicates that Sn(II)apatite is an excellent candidate for long-term immobilization of technetium. The indications are that the Sn(II)apatite will lend itself to sequestering and inhibiting the reoxidation to the mobile pertechnetate species, thus keeping the radionuclide out of the environment.

DUNCAN JB; HAGERTY K; MOORE WP; RHODES RN; JOHNSON JM; MOORE RC

2012-06-01T23:59:59.000Z

495

The Sun -II Alexei Gilchrist  

E-Print Network [OSTI]

The Sun - II Alexei Gilchrist #12;Some resources · http://www.nineplanets.org/sol.html · "The Universe: Secrets of the Sun" video ­ Search on youtube (references are to clips here http in these slides Secrets of the Sun #12;Why does the sun shine? Long and fascinating history involving - geology

Wardle, Mark

496

Robotics II June 10, 2014  

E-Print Network [OSTI]

Robotics II June 10, 2014 Exercise 1 Consider a planar 3R robot with unitary link lengths as in Fig. 1. Taking into account the robot redundancy, a velocity control scheme is active so as to track desired end-effector position trajectories while trying to locally maximize the minimum Cartesian distance

De Luca, Alessandro

497

PARS II Process Document - Project Phasing | Department of Energy  

Energy Savers [EERE]

PARS II Process Document - Project Phasing.pdf More Documents & Publications Proposed Data Elements for PARS II Web Application Slide 1 PARS II Standard Operating Procedure (SOP)...

498

Proposed Data Elements for PARS II Web Application | Department...  

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

Proposed Data Elements for PARS II Web Application Proposed Data Elements for PARS II Web Application Proposed Data Elements for PARS II Web Application More Documents &...

499

PARS II - Integrated Project Team Meeting | Department of Energy  

Energy Savers [EERE]

Meeting PARS II - Integrated Project Team Meeting More Documents & Publications PARS II 104 Contractor Monthly Upload Proposed Data Elements for PARS II Web Application Slide 1...

500

Part II: Project Summaries Project Summaries  

E-Print Network [OSTI]

Part II: Project Summaries Part II Project Summaries #12 generally cannot be achieved for reasonable computational cost. Applications that require modeling, and in nondestructive testing. The objective of this project is to advance the state of the art in electromagnetic

Perkins, Richard A.