Sample records for active amendment concrete

  1. A PERMEABLE ACTIVE AMENDMENT CONCRETE (PAAC) FOR CONTAMINANT REMEDIATION AND EROSION CONTROL

    SciTech Connect (OSTI)

    Knox, A.; Paller, M.; Dixon, K.

    2012-06-29T23:59:59.000Z

    The final project report for SEED SERDP ER - 2134 describes the development of permeable active amendment concrete (PAAC), which was evaluated through four tasks: 1) development of PAAC; 2) assessment of PAAC for contaminant removal; 3) evaluation of promising PAAC formulations for potential environmental impacts; and 4) assessment of the hydraulic, physical, and structural properties of PAAC. Conventional permeable concrete (often referred to as pervious concrete) is concrete with high porosity as a result of an extensive and interconnected void content. It is made from carefully controlled amounts of water and cementitious materials used to create a paste that forms a coating around aggregate particles. The mixture has a substantial void content (e.g., 15% - 25%) that results in a highly permeable structure that drains quickly. In PAAC, the aggregate material is partly replaced by chemically-active amendments that precipitate or adsorb contaminants in water that flows through the concrete interstices. PAAC combines the relatively high structural strength, ample void space, and water permeability of pervious concrete with the contaminant sequestration ability of chemically-active amendments to produce a new material with superior durability and ability to control contaminant mobility. The high surface area provided by the concrete interstices in PAAC provides significant opportunity for contaminants to react with the amendments incorporated into the concrete matrix. PAAC has the potential to immobilize a large variety of organic and inorganic contaminants by incorporating different active sequestering agents including phosphate materials (rock phosphate), organoclays, zeolite, and lime individually or in combinations.

  2. Hybrid Control Charts for Active Control and Monitoring of Concrete Strength

    E-Print Network [OSTI]

    Mobasher, Barzin

    Hybrid Control Charts for Active Control and Monitoring of Concrete Strength Busaba Laungrungrong1 ; Barzin Mobasher2 ; Douglas Montgomery3 ; and Connie M. Borror4 Abstract: Concrete is the most widely used the efficiency of a concrete production process. Statistical process control is generally applied to gain

  3. Reconciling Apparent Variability in Effects of Biochar Amendment on Soil Enzyme Activities by Assay Optimization

    SciTech Connect (OSTI)

    Bailey, Vanessa L.; Fansler, Sarah J.; Smith, Jeffery L.; Bolton, Harvey

    2011-02-01T23:59:59.000Z

    Applying biochar to soils as an ameliorative substance and mechanism for C sequestration has received a great deal of interest in light of the sustained fertility observed in the Terra Preta soils of Brazil. The effects of synthetic biochars on biochemical processes needs to be better understood in order to determine if this is a reasonable practice in managed systems. The biochar studied was formed from the fast-pyrolysis of a switchgrass feedstock. Four soil enzymes were studied: ?-glucosidase, ?-N-acetylglucosaminidase, lipase, and leucine aminopeptidase. Both colorimetric and fluorescent assays were used for ?-glucosidase and ?-N-acetylglucosaminidase. Seven days after biochar was added to microcosms of a Palouse silt loam, the fluorescence-based assays indicated increased activities of the four enzymes, compared to non-amended soil. To clarify the mechanisms of the observed effects,in the absence of soil, purified enzymes or substrates were briefly exposed to biochar and then assayed. Except for ?-N-acetylglucosaminidase, the exposure of substrate to biochar reduced the apparent activity of the remaining three enzymes in vitro, suggesting that sorption reactions between the substrate and biochar either removed the substrate from the assays or impeded the enzyme binding. The activity of purified ?-N-acetylglucosaminidase increased significantly following biochar exposure, suggesting a chemical stimulation of enzyme functioning. We conclude that biochar added to soil acts as a substrate that can stimulate the soil microbial biomass and its activity. Our in vitro study suggests that biochar is not biochemically inert. Biochar amendments are likely to have effects that are currently difficult to predict, and that could impact overall soil function.

  4. Activated carbon and biochar amendments decrease pore-water concentrations of polycyclic aromatic hydrocarbons (PAHs) in sewage sludge

    E-Print Network [OSTI]

    Lehmann, Johannes

    and biochar are effective at reducing PAH pore-water concentrations, the more expensive and non contaminants including PAHs may be taken up by organ- isms or migrate to water basins. Methods that limitActivated carbon and biochar amendments decrease pore-water concentrations of polycyclic aromatic

  5. alkali-activated slag concrete: Topics by E-print Network

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

    on the compressive, flexural strength, and split tensile test of polymer modified steel fibre reinforced concrete (PSFC) concrete was examined. Including SBR latex at a certain %...

  6. Comparative Evaluation of Cutting Methods of Activated Concrete from Nuclear Power Plant Decommissioning - 13548

    SciTech Connect (OSTI)

    Kim, HakSoo; Chung, SungHwan; Maeng, SungJun [Central Research Institute, Korea Hydro and Nuclear Power Co. Ltd., 1312-70 Yuseong-daero, Yuseong-gu, Daejeon 305-343 (Korea, Republic of)] [Central Research Institute, Korea Hydro and Nuclear Power Co. Ltd., 1312-70 Yuseong-daero, Yuseong-gu, Daejeon 305-343 (Korea, Republic of)

    2013-07-01T23:59:59.000Z

    The amount of radioactive wastes from decommissioning of a nuclear power plant varies greatly depending on factors such as type and size of the plant, operation history, decommissioning options, and waste treatment and volume reduction methods. There are many methods to decrease the amount of decommissioning radioactive wastes including minimization of waste generation, waste reclassification through decontamination and cutting methods to remove the contaminated areas. According to OECD/NEA, it is known that the radioactive waste treatment and disposal cost accounts for about 40 percentage of the total decommissioning cost. In Korea, it is needed to reduce amount of decommissioning radioactive waste due to high disposal cost, about $7,000 (as of 2010) per a 200 liter drum for the low- and intermediate-level radioactive waste (LILW). In this paper, cutting methods to minimize the radioactive waste of activated concrete were investigated and associated decommissioning cost impact was assessed. The cutting methods considered are cylindrical and volume reductive cuttings. The study showed that the volume reductive cutting is more cost-effective than the cylindrical cutting. Therefore, the volume reductive cutting method can be effectively applied to the activated bio-shield concrete. (authors)

  7. Non destructive multi elemental analysis using prompt gamma neutron activation analysis techniques: Preliminary results for concrete sample

    SciTech Connect (OSTI)

    Dahing, Lahasen Normanshah [School of Applied Physics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia and Malaysian Nuclear Agency (Nuklear Malaysia), Bangi 43000, Kajang (Malaysia); Yahya, Redzuan [School of Applied Physics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia); Yahya, Roslan; Hassan, Hearie [Malaysian Nuclear Agency (Nuklear Malaysia), Bangi 43000, Kajang (Malaysia)

    2014-09-03T23:59:59.000Z

    In this study, principle of prompt gamma neutron activation analysis has been used as a technique to determine the elements in the sample. The system consists of collimated isotopic neutron source, Cf-252 with HPGe detector and Multichannel Analysis (MCA). Concrete with size of 10×10×10 cm{sup 3} and 15×15×15 cm{sup 3} were analysed as sample. When neutrons enter and interact with elements in the concrete, the neutron capture reaction will occur and produce characteristic prompt gamma ray of the elements. The preliminary result of this study demonstrate the major element in the concrete was determined such as Si, Mg, Ca, Al, Fe and H as well as others element, such as Cl by analysis the gamma ray lines respectively. The results obtained were compared with NAA and XRF techniques as a part of reference and validation. The potential and the capability of neutron induced prompt gamma as tool for multi elemental analysis qualitatively to identify the elements present in the concrete sample discussed.

  8. Activities in Support of Continuing the Service of Nuclear Power Plant Safety-Related Concrete Structures

    SciTech Connect (OSTI)

    Naus, Dan J [ORNL

    2014-01-01T23:59:59.000Z

    Nuclear power plant (NPP) concrete structures are described. In-service inspection and testing requirements in the U.S. are summarized. The license renewal process in the U.S. is outlined and its current status provided. Operating experience related to performance of the concrete structures is presented. Basic components of a program to manage aging of the concrete structures are identified and described: (1) Degradation mechanisms, damage models, and material performance; (2) Assessment and remediation: i.e., component selection, in- service inspection, non-destructive examinations, and remedial actions; and (3) Estimation of performance at present or some future point in time: i.e., application of structural reliability theory to the design and optimization of in-service inspection/maintenance strategies, and determination of the effects of degradation on plant risk. Finally, areas are noted where additional research would be of benefit to aging management of nuclear power plant concrete structures.

  9. AMENDMENT TO WORK PROGRAMME 2009 This amendment to the work programme 2009 is to include the activities in the fission theme

    E-Print Network [OSTI]

    De Cindio, Fiorella

    . The activities related to the fusion theme have been left unchanged from the former version of the work programme. Euratom for Nuclear Research and Training Activities1 (European Commission C(2008)6800 of 17 November 2008) for nuclear research and training activities (2007 to 2011) and Council Decision 2006/976/Euratom of 19

  10. Concrete Domains 

    E-Print Network [OSTI]

    Kahn, Gilles; Plotkin, Gordon

    1993-01-01T23:59:59.000Z

    This paper introduces the theory of a particular kind of computation domains called concrete domains. The purpose of this theory is to find a satisfactory framework for the notions of coroutine computation and sequentiality ...

  11. Summary of Construction Activities and Results from Six Initial Accelerated Pavement Tests Conducted on Asphalt Concrete Pavement Section for Modified-Binder Overlay

    E-Print Network [OSTI]

    Bejarano, Manuel O.; Morton, Bruce S.; Scheffy, Clark

    2005-01-01T23:59:59.000Z

    Testing on the Asphalt Concrete FWD testing was conducted onin asphalt concrete modulus after HVS testing for Sectionsconcrete pavements under accelerated pavement testing. This

  12. Electroosmotic decontamination of concrete

    SciTech Connect (OSTI)

    Bostick, W.D.; Bush, S.A.; Marsh, G.C.; Henson, H.M. [Oak Ridge K-25 Site, TN (United States); Box, W.D.; Morgan, I.L. [Oak Ridge National Lab., TN (United States)

    1993-03-01T23:59:59.000Z

    A method is described for the electroosmotic decontamination of concrete surfaces, in which an electrical field is used to induce migration of ionic contaminants from porous concrete into an electrolyte solution that may be disposed of as a low-level liquid radioactive waste (LLRW); alternately, the contaminants from the solution can be sorbed onto anion exchange media in order to prevent contaminant buildup in the solution and to minimize the amount of LLRW generated. We have confirmed the removal of uranium (and infer the removal of {sup 99}Tc) from previously contaminated concrete surfaces. In a typical experimental configuration, a stainless steel mesh is placed in an electrolyte solution contained within a diked cell to serve as the negative electrode (cathode) and contaminant collection medium, respectively, and an existing metal penetration (e.g., piping, conduit, or rebar reinforcement within the concrete surface) serves as the positive electrode (anode) to complete the cell. Typically we have achieved 70 to >90% reductions in surface activity by applying <400 V and <1 A for 1--3 h (energy consumption of 0.4--12 kWh/ft{sup 2}).

  13. Amended Silicated for Mercury Control

    SciTech Connect (OSTI)

    James Butz; Thomas Broderick; Craig Turchi

    2006-12-31T23:59:59.000Z

    Amended Silicates{trademark}, a powdered, noncarbon mercury-control sorbent, was tested at Duke Energy's Miami Fort Station, Unit 6 during the first quarter of 2006. Unit 6 is a 175-MW boiler with a cold-side electrostatic precipitator (ESP). The plant burns run-of-the-river eastern bituminous coal with typical ash contents ranging from 8-15% and sulfur contents from 1.6-2.6% on an as-received basis. The performance of the Amended Silicates sorbent was compared with that for powdered activated carbon (PAC). The trial began with a period of baseline monitoring during which no sorbent was injected. Sampling during this and subsequent periods indicated mercury capture by the native fly ash was less than 10%. After the baseline period, Amended Silicates sorbent was injected at several different ratios, followed by a 30-day trial at a fixed injection ratio of 5-6 lb/MMACF. After this period, PAC was injected to provide a comparison. Approximately 40% mercury control was achieved for both the Amended Silicates sorbent and PAC at injection ratios of 5-6 lbs/MMACF. Higher injection ratios did not achieve significantly increased removal. Similar removal efficiencies have been reported for PAC injection trials at other plants with cold-side ESPs, most notably for plants using medium to high sulfur coal. Sorbent injection did not detrimentally impact plant operations and testing confirmed that the use of Amended Silicates sorbent does not degrade fly ash quality (unlike PAC). The cost for mercury control using either PAC or Amended Silicates sorbent was estimated to be equivalent if fly ash sales are not a consideration. However, if the plant did sell fly ash, the effective cost for mercury control could more than double if those sales were no longer possible, due to lost by-product sales and additional cost for waste disposal. Accordingly, the use of Amended Silicates sorbent could reduce the overall cost of mercury control by 50% or more versus PAC for locations where fly ash is sold as a by-product.

  14. Summary of Concrete Overlays Existing concrete pavement

    E-Print Network [OSTI]

    Summary of Concrete Overlays Existing concrete pavement with surface distresses Prepared surface Monolithic pavement with new concrete surface Existing asphalt pavement with surface distresses Milled pavement with asphalt surface distresses Milled and cleaned surface New 2­5 in. (5.1­12.7 cm) bonded

  15. Concrete Pavement Surface Characteristics

    E-Print Network [OSTI]

    , Broom, Belt, Carpet) Shot Peened Exposed Aggregate Porous (Pervious) Concrete Milled HMA and SurfaceImproving Concrete Pavement Surface Characteristics Pooled Fund TPF-5(139) National Concrete do with this knowledge? #12;Better Design and Construction Practices for Texturing Concrete Pavement

  16. Concrete Material Models Concrete_1: Concrete Model with No Tensile Strength

    E-Print Network [OSTI]

    Filippou, Filip C.

    Concrete Material Models Concrete_1: Concrete Model with No Tensile Strength INPUT Concrete_1, matID ¢f fc cu u, , ,e e0 Definitions (Fig. 1): fc : concrete compressive strength at 28 days (compression is negative) A0 : concrete strain at maximum strength (compression is negative) fcu : concrete crushing

  17. Insulating polymer concrete

    DOE Patents [OSTI]

    Schorr, H. Peter (Douglaston, NY); Fontana, Jack J. (Shirley, NY); Steinberg, Meyer (Melville, NY)

    1987-01-01T23:59:59.000Z

    A lightweight insulating polymer concrete formed from a lightweight closed cell aggregate and a water resistance polymeric binder.

  18. Dynamic strength of concrete

    SciTech Connect (OSTI)

    Logunova, V.A.; Rudenko, V.V.; Radionov, A.K.; Sokolov, I.B.

    1994-12-01T23:59:59.000Z

    Recommendations for evaluating the dynamic strength of concrete structures at hydroelectric power stations are given. Both existing and planned structures are addressed. Equations are provided for determing the design compressive and tensile strength of concrete. A formula is provided for determining design dynamic strength of concrete of various ages under uniform compression. 3 refs., 1 fig., 2 tabs.

  19. CONCRETE PAVEMENT Reference Manual

    E-Print Network [OSTI]

    CONCRETE PAVEMENT Reference Manual Prepared for Federal Highway Administration Office of Pavement by National Concrete Pavement Technology Center at Iowa State University 2711 South Loop Drive, Suite 4700 No. 3. Recipient's Catalog No. 4. Title and Subtitle 5. Report Date February 2008 Concrete Pavement

  20. PROTECTED AREAS AMENDMENTS AND.

    E-Print Network [OSTI]

    as critical fish and wildlife habitat. The "protected areas" amendment is a major step in the Council's efforts to rebuild fish and wildlife populations that have been damaged by hydroelectric development. Low also imposed significant costs. The Northwest's fish and wildlife have suffered extensive losses

  1. National Concrete Pavement Technology Center

    E-Print Network [OSTI]

    .5 " concrete overlay with 1" asphalt interlayer (non porous surface mix) ·Pours- one 22' pass and one 16' ftNational Concrete Pavement Technology Center Concrete Overlay Technology TTCC/NC2 Meeting Savannah patches in 2008 Shortcut (2) to CD Drive.lnk #12;Need to Move Concrete Overlays Forward Concrete Overlay

  2. Concrete chemistry: Chemical admixtures, sprayed concrete, concrete binders and current R&D

    E-Print Network [OSTI]

    Davies, Christopher

    Concrete chemistry: Chemical admixtures, sprayed concrete, concrete binders and current R&D Dr Roar Myrdal, R&D Director Construction Chemicals, Normet International Ltd. Adjunct Prof. Concrete Technology ­ School of Engineering ABSTRACT A short overview of chemical admixtures for concrete ­ types and how

  3. Strict $\\infty $-categories. Concrete Duality

    E-Print Network [OSTI]

    G. V. Kondratiev

    2006-08-17T23:59:59.000Z

    An elementary theory of strict $\\infty $-categories with application to concrete duality is given. New examples of first and second order concrete duality are presented.

  4. DIVISON 03 CONCRETE 03300 CAST-IN-PLACE CONCRETE

    E-Print Network [OSTI]

    -IN-PLACE CONCRETE A. Design Considerations 1. Testing and inspection will be required for cast-in-place concrete of the Building Code. All testing and inspection of concrete work will be contracted for and paid for directly by the University, regardless of building class. The A/E must specify all testing and inspection of concrete work

  5. ParadigmParadigm Concrete RecyclingConcrete Recycling

    E-Print Network [OSTI]

    ParadigmParadigm Concrete RecyclingConcrete Recycling #12;Recycled ConcreteRecycled Concrete ·· Whatever steel goes into PCC must comeWhatever steel goes into PCC must come out for recycleout for recycle ·· Aggregates have a big impact on the costAggregates have a big impact on the cost of recyclingof recycling

  6. Electrokinetic decontamination of concrete

    SciTech Connect (OSTI)

    Lomasney, H.L.; SenGupta, A.K.; Yachmenev, V.

    1996-12-31T23:59:59.000Z

    ELECTROSORB Electrokinetic Extraction Technology, developed by ISOTRON Corp., offers a cost-effective approach to treating contaminated concrete. Heavy metals/radionuclides trapped in concrete can be extracted using this process if they are chemically solubilized; solubilizers used are citric acid alone and a mixture of citric and nitric acids. A DC electric field is applied across the contaminated concrete to electrokinetically transport the solubilized contaminants from the concrete pores to a collector on the concrete surface. The collector is an extraction pad laid on the surface. The pad provides confinement for a planar electrode and solubilizer solution; it is operated under a vacuum to hold the pad against the concrete surface. Operation requires little attendance, reducing the workers` health hazards. The process incorporates a mechanism for recycling the solubilizer solution. A field demonstration of the process took place in Building 21 of DOE`s Mound facility in Miamisburg, OH, over 12 days in June 1996. The thorium species present in this building`s concrete floors included ThO{sub 2} and thorium oxalate. The nitric acid was found to facilitate Th extraction.

  7. Plutonium Consolidation Amended ROD

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR - T en YMedicineWhat Happens ina HomeAmended Record of

  8. Draft Mission Plan Amendment

    SciTech Connect (OSTI)

    NONE

    1991-09-01T23:59:59.000Z

    The Department of Energy`s Office Civilian Radioactive Waste Management has prepared this document to report plans for the Civilian Radioactive Waste Management Program, whose mission is to manage and dispose of the nation`s spent fuel and high-level radioactive waste in a manner that protects the health and safety of the public and of workers and the quality of the environment. The Congress established this program through the Nuclear Waste Policy Act of 1982. Specifically, the Congress directed us to isolate these wastes in geologic repositories constructed in suitable rock formations deep beneath the surface of the earth. In the Nuclear Waste Policy Amendments Act of 1987, the Congress mandated that only one repository was to be developed at present and that only the Yucca Mountain candidate site in Nevada was to be characterized at this time. The Amendments Act also authorized the construction of a facility for monitored retrievable storage (MRS) and established the Office of the Nuclear Waste Negotiator and the Nuclear Waste Technical Review Board. After a reassessment in 1989, the Secretary of Energy restructured the program, focusing the repository effort scientific evaluations of the Yucca Mountain candidate site, deciding to proceed with the development of an MRS facility, and strengthening the management of the program. 48 refs., 32 figs.

  9. Seismic demands in precast concrete diaphragms

    E-Print Network [OSTI]

    Schoettler, Matthew John

    2010-01-01T23:59:59.000Z

    Reinforced and Prestressed Concrete Walls. ” Journal ofPrestressed and Precast Concrete Structures. ” PCI Journal ,methodology for precast concrete diaphragms part 2: Research

  10. SHORT-TERM EFFECTS OF SOIL AMENDMENT WITH TREE LEGUME BIOMASS ON CARBON AND NITROGEN

    E-Print Network [OSTI]

    Lehmann, Johannes

    SHORT-TERM EFFECTS OF SOIL AMENDMENT WITH TREE LEGUME BIOMASS ON CARBON AND NITROGEN IN PARTICLE-to-N ratio of the added plant material seems to control the eects of soil amendment with tree legume biomass to the total quantity of C and N pre- sent. Physical fractionation of SOM can help to identify more active

  11. From mind to matter: neural correlates of abstract and concrete mindsets

    E-Print Network [OSTI]

    Anat, Maril,

    From mind to matter: neural correlates of abstract and concrete mindsets Michael Gilead,1 Nira an abstract (vs concrete) mindset alters the way people construe the world, thereby exerting substantial an abstracting vs concretizing mindsets. Specifically, participants: (i) indicated why perform certain activities

  12. Review of Concrete Biodeterioration in Relation to Buried Nuclear Waste

    SciTech Connect (OSTI)

    Turick, C; Berry, C.

    2012-10-15T23:59:59.000Z

    Long-term storage of low level radioactive material in below ground concrete disposal units (DUs) (Saltstone Disposal Facility) is a means of depositing wastes generated from nuclear operations of the U.S. Department of Energy. Based on the currently modeled degradation mechanisms, possible microbial induced effects on the structural integrity of buried low level wastes must be addressed. Previous international efforts related to microbial impacts on concrete structures that house low level radioactive waste showed that microbial activity can play a significant role in the process of concrete degradation and ultimately structural deterioration. This literature review examines the recent research in this field and is focused on specific parameters that are applicable to modeling and prediction of the fate of concrete vaults housing stored wastes and the wastes themselves. Rates of concrete biodegradation vary with the environmental conditions, illustrating a need to understand the bioavailability of key compounds involved in microbial activity. Specific parameters require pH and osmotic pressure to be within a certain range to allow for microbial growth as well as the availability and abundance of energy sources like components involved in sulfur, iron and nitrogen oxidation. Carbon flow and availability are also factors to consider in predicting concrete biodegradation. The results of this review suggest that microbial activity in Saltstone, (grouted low level radioactive waste) is unlikely due to very high pH and osmotic pressure. Biodegradation of the concrete vaults housing the radioactive waste however, is a possibility. The rate and degree of concrete biodegradation is dependent on numerous physical, chemical and biological parameters. Results from this review point to parameters to focus on for modeling activities and also, possible options for mitigation that would minimize concrete biodegradation. In addition, key chemical components that drive microbial activity on concrete surfaces are discussed.

  13. An investigation of tendon sheathing filler migration into concrete

    SciTech Connect (OSTI)

    Naus, D.J.; Oland, C.B. [Oak Ridge National Lab., TN (United States)

    1998-03-01T23:59:59.000Z

    During some of the inspections at nuclear power plants with prestressed concrete containments, it was observed that the containments has experienced leakage of the tendon sheathing filler (i.e., streaks). The objective of this activity was to provide an indication of the extent of tendon sheathing filler leakage into the concrete and its affects on concrete properties. Literature was reviewed and concrete core samples were obtained from the Trojan Nuclear Plant and tested. The literature primarily addressed effects of crude or lubricating oils that are known to cause concrete damage. However, these materials have significantly different characteristics relative to the materials used as tendon sheathing fillers. Examination and testing of the concrete cores indicated that the appearance of tendon sheathing filler on the concrete surface was due to leakage from the conduits and its subsequent migration through cracks that were present. Migration of the tendon sheathing filler was confined to the cracks and there was no perceptible movement into the concrete. Results of compressive strength testing indicated that the concrete quality was consistent in the containment and that the strength had increased over 40% in 25.4 years relative to the average compressive strength at 28-days age.

  14. amended soil microcosms: Topics by E-print Network

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

    Amendment Effects on Soil Phosphorus Stabilization in Poultry Litter Amended Sandy Soils. Environmental Management and Restoration Websites Summary: Litter Amended Sandy Soils....

  15. Protocols for Authorized Release of Concrete

    SciTech Connect (OSTI)

    Smith, Agatha Marie; Meservey, Richard Harlan; Chen, S.Y.; Powell, James Edward; PArker, F.

    2000-06-01T23:59:59.000Z

    Much of the clean or slightly contaminated concrete from Decontamination and Decommissioning (D&D) activities could be re-used. Currently, there is no standardized approach, or protocol, for managing the disposition of such materials. Namely, all potential disposition options for concrete, including authorized release for re-use, are generally not fully evaluated in D&D projects, so large quantities have been unduly disposed of as low-level radioactive waste. As a result, costs of D&D have become prohibitively high, hindering expedient cleanup of surplus facilities. The ability to evaluate and implement the option of authorized release of concrete from demolition would result in significant cost savings, while maintaining protection of environmental health and safety, across the Department of Energy (DOE) complex. The Idaho National Engineering and Environmental Laboratory (INEEL), Argonne National Laboratory East (ANL-E), and Vanderbilt University have teamed to develop a protocol for the authorized release of concrete, based on the existing DOE guidance of Order 5400.5, that applies across the DOE complex. The protocol will provide a streamlined method for assessing risks and costs, and reaching optimal disposal options, including re-use of the concrete within the DOE system.

  16. Sustainability of Concrete forSustainability of Concrete for Infrastructure

    E-Print Network [OSTI]

    Bertini, Robert L.

    Sustainability of Concrete forSustainability of Concrete for Infrastructure Dr. Jason H. Ideker limits sustainability in concrete materials? ­ Degradation: Alkali-silica reaction ­ Environmental for infrastructure rehabilitation and rapid repair ­ Instrumentation and monitoring to track performance · Testing

  17. Magnetic Resonance Imaging of concrete

    E-Print Network [OSTI]

    Burgoyne, Chris

    velocity · Relates Elastic modulus to speed of sound Assumes Concrete heterogeneous Can be affected by steel Modulus related to speed of sound Strength of concrete related to modulus Location of flaws structure · In both cases procedure is destructive Systems to monitor concrete modulus · Ultra-sonic pulse

  18. High temperature polymer concrete

    DOE Patents [OSTI]

    Fontana, J.J.; Reams, W.

    1984-05-29T23:59:59.000Z

    This invention is concerned with a polymer concrete composition, which is a two-component composition useful with many bases including metal. Component A, the aggregate composition, is broadly composed of silica, silica flour, portland cement, and acrylamide, whereas Component B, which is primarily vinyl and acrylyl reactive monomers, is a liquid system.

  19. Environmental assessment for amendments to 10 CFR Part 835

    SciTech Connect (OSTI)

    NONE

    1997-02-01T23:59:59.000Z

    This proposed amendment will modify the scope of 10 CFR 835 to explicitly exclude the transportation of radioactive material conducted in conformance with the Department of Transportation regulations, certain activities conducted on foreign soil, add standards for area posting and sealed radioactive source control, and add a removable surface radioactivity value for tritium.

  20. Blast simulator wall tests : experimental methods and mitigation strategies for reinforced concrete and concrete Masonry

    E-Print Network [OSTI]

    Oesterle, Michael G.

    2009-01-01T23:59:59.000Z

    Foam-protected reinforced concrete structures under impact:and Repair of Reinforced Concrete with Carbon Overlays."Polymer Reinforcement for Concrete Structures (FRPRCS-08),

  1. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2. AMENDMENT/MODIFICATION NO

    E-Print Network [OSTI]

    extended. Offers musi acknowledge ceceipl of this amendment prior to the hour and dale specified copies oflhe amendment, (b) By acknowledging receipt ol this amendment on each copy of the offer and amendment numbers FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT

  2. Cross-cultural comparison of concrete recycling decision-making and implementation in construction industry

    SciTech Connect (OSTI)

    Tam, Vivian W.Y., E-mail: vivianwytam@gmail.co [School of Engineering, University of Western Sydney, Locked Bag 1797, Penrith South DC, NSW 1797 (Australia); Tam, Leona [College of Business and Public Administration, 2151 Constant Hall, Old Dominion University, Norfolk, VA 23529 (United States); Le, Khoa N. [School of Engineering, University of Western Sydney, Locked Bag 1797, Penrith South DC, NSW 1797 (Australia)

    2010-02-15T23:59:59.000Z

    Waste management is pressing very hard with alarming signals in construction industry. Concrete waste constituents major proportions of construction and demolition waste of 81% in Australia. To minimize concrete waste generated from construction activities, recycling concrete waste is one of the best methods to conserve the environment. This paper investigates concrete recycling implementation in construction. Japan is a leading country in recycling concrete waste, which has been implementing 98% recycling and using it for structural concrete applications. Hong Kong is developing concrete recycling programs for high-grade applications. Australia is making relatively slow progress in implementing concrete recycling in construction. Therefore, empirical studies in Australia, Hong Kong, and Japan were selected in this paper. A questionnaire survey and structured interviews were conducted. Power spectrum was used for analysis. It was found that 'increasing overall business competitiveness and strategic business opportunities' was considered as the major benefit for concrete recycling from Hong Kong and Japanese respondents, while 'rising concrete recycling awareness such as selecting suitable resources, techniques and training and compliance with regulations' was considered as the major benefit from Australian respondents. However, 'lack of clients' support', 'increase in management cost' and 'increase in documentation workload, such as working documents, procedures and tools' were the major difficulties encountered from Australian, Hong Kong, and Japanese respondents, respectively. To improve the existing implementation, 'inclusion of concrete recycling evaluation in tender appraisal' and 'defining clear legal evaluation of concrete recycling' were major recommendations for Australian and Hong Kong, and Japanese respondents, respectively.

  3. Blast simulator wall tests : experimental methods and mitigation strategies for reinforced concrete and concrete Masonry

    E-Print Network [OSTI]

    Oesterle, Michael G.

    2009-01-01T23:59:59.000Z

    suited for testing reinforced concrete and concrete masonrytesting on mitigation strategies of reinforced concrete andConcrete Masonry Unit COR Coefficient of Restitution DIF Dynamic Increase Factor EMRTC Energetic Materials Research and Testing

  4. Seismic demands in precast concrete diaphragms

    E-Print Network [OSTI]

    Schoettler, Matthew John

    2010-01-01T23:59:59.000Z

    2004). “Load testing of a Precast Concrete Double-Tee FlangeStructural Testing, SP 211-8, American Concrete Institute,shake table testing of a precast concrete building, was

  5. Preferred orientation of ettringite in concrete fractures

    E-Print Network [OSTI]

    Wenk, Hans-Rudolf

    2009-01-01T23:59:59.000Z

    Z. (1988). Cement and Concrete Research , 18 , 823-829.R. (2006). Cement and Concrete Research 36 , 364-370.P.K. & Monteiro, P.J.M. (2006). Concrete. Microstructure,

  6. Asphalt and Asphaltic Concrete

    E-Print Network [OSTI]

    Young, A. R.

    1914-05-01T23:59:59.000Z

    , and combined curb and gutter furnished and set, the rate for resetting old curbing; the rate per cubic yard for extra concrete, if any is used; the price per cubic yard for broken stone or gravel; the rate per square yard for paving and for relaying old...- tified and given access to the same at least ten days be- fore it is required for use, and any work in which re- jected cement was used will be rejected altogether. 5. The cement shall be packed in strong bags having printed on the outside the brand...

  7. DATABASE FOR PREMATURE CONCRETE DETERIORATION

    E-Print Network [OSTI]

    Texas at Austin, University of

    0-4085-P3 DATABASE FOR PREMATURE CONCRETE DETERIORATION Author: Kevin J. Folliard Project 0. This product presents the architecture for a database to collect relevant information on materials and mixture in developing and populating various materials- and structures-specific databases for both new concrete

  8. CRAD, Nuclear Facility Construction - Structural Concrete, May...

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

    CRAD, Nuclear Facility Construction - Structural Concrete, May 29, 2009 CRAD, Nuclear Facility Construction - Structural Concrete, May 29, 2009 May 29, 2009 Nuclear Facility...

  9. Carbonation and CO{sub 2} uptake of concrete

    SciTech Connect (OSTI)

    Yang, Keun-Hyeok, E-mail: yangkh@kgu.ac.kr [Department of Plant Architectural Engineering, Kyonggi University, San 94-6, Iui-dong, Yeongtong-gu, Suwon, Kyonggi-do 443-760 (Korea, Republic of); Seo, Eun-A, E-mail: ssooaa@naver.com [Department of Architectural Engineering, Kyonggi University Graduate School, Seoul 120-702 (Korea, Republic of); Tae, Sung-Ho, E-mail: jnb55@hanyang.ac.kr [School of Architecture and Architectural Engineering, Hanyang University, 55 Hangyangdaehak-ro, Sangnok-gu, Ansan, Kyeonggi-do 426-791 (Korea, Republic of)

    2014-04-01T23:59:59.000Z

    This study developed a reliable procedure to assess the carbon dioxide (CO{sub 2}) uptake of concrete by carbonation during the service life of a structure and by the recycling of concrete after demolition. To generalize the amount of absorbable CO{sub 2} per unit volume of concrete, the molar concentration of carbonatable constituents in hardened cement paste was simplified as a function of the unit content of cement, and the degree of hydration of the cement paste was formulated as a function of the water-to-cement ratio. The contribution of the relative humidity, type of finishing material for the concrete surface, and the substitution level of supplementary cementitious materials to the CO{sub 2} diffusion coefficient in concrete was reflected using various correction factors. The following parameters varying with the recycling scenario were also considered: the carbonatable surface area of concrete crusher-runs and underground phenomena of the decreased CO{sub 2} diffusion coefficient and increased CO{sub 2} concentration. Based on the developed procedure, a case study was conducted for an apartment building with a principal wall system and an office building with a Rahmen system, with the aim of examining the CO{sub 2} uptake of each structural element under different exposure environments during the service life and recycling of the building. As input data necessary for the case study, data collected from actual surveys conducted in 2012 in South Korea were used, which included data on the surrounding environments, lifecycle inventory database, life expectancy of structures, and recycling activity scenario. Ultimately, the CO{sub 2} uptake of concrete during a 100-year lifecycle (life expectancy of 40 years and recycling span of 60 years) was estimated to be 15.5%–17% of the CO{sub 2} emissions from concrete production, which roughly corresponds to 18%–21% of the CO{sub 2} emissions from the production of ordinary Portland cement. - Highlights: • CO{sub 2} uptake assessment approach owing to the concrete carbonation is developed. • An equation to directly determine the absorbable CO{sub 2} amount in concrete is proposed. • The carbonatable surface area of concrete crusher-runs for CO{sub 2} uptake is ascertained. • This study provides typical data for uptake and emission of CO{sub 2} in concrete building.

  10. Nuclear Power Plant Concrete Structures

    SciTech Connect (OSTI)

    Basu, Prabir [International Atomic Energy Agency (IAEA)] [International Atomic Energy Agency (IAEA); Labbe, Pierre [Electricity of France (EDF)] [Electricity of France (EDF); Naus, Dan [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL)

    2013-01-01T23:59:59.000Z

    A nuclear power plant (NPP) involves complex engineering structures that are significant items of the structures, systems and components (SSC) important to the safe and reliable operation of the NPP. Concrete is the commonly used civil engineering construction material in the nuclear industry because of a number of advantageous properties. The NPP concrete structures underwent a great degree of evolution, since the commissioning of first NPP in early 1960. The increasing concern with time related to safety of the public and environment, and degradation of concrete structures due to ageing related phenomena are the driving forces for such evolution. The concrete technology underwent rapid development with the advent of chemical admixtures of plasticizer/super plasticizer category as well as viscosity modifiers and mineral admixtures like fly ash and silica fume. Application of high performance concrete (HPC) developed with chemical and mineral admixtures has been witnessed in the construction of NPP structures. Along with the beneficial effect, the use of admixtures in concrete has posed a number of challenges as well in design and construction. This along with the prospect of continuing operation beyond design life, especially after 60 years, the impact of extreme natural events ( as in the case of Fukushima NPP accident) and human induced events (e.g. commercial aircraft crash like the event of September 11th 2001) has led to further development in the area of NPP concrete structures. The present paper aims at providing an account of evolution of NPP concrete structures in last two decades by summarizing the development in the areas of concrete technology, design methodology and construction techniques, maintenance and ageing management of concrete structures.

  11. NOTICE OF PROPOSED REGULATION AMENDMENT Date: April 15, 2009

    E-Print Network [OSTI]

    Wu, Shin-Tson

    REGULATION AMENDMENT: Philip Fairey, Deputy Director, Florida Solar Energy Center COMMENTS CONCERNINGNOTICE OF PROPOSED REGULATION AMENDMENT Date: April 15, 2009 REGULATION TITLE: REGULATION NO.: Solar Thermal Collector and PV Module Certification UCF-8.003 SUMMARY OF REGULATION AMENDMENT

  12. NOTICE OF PROPOSED REGULATION AMENDMENT Date: April 15, 2009

    E-Print Network [OSTI]

    Wu, Shin-Tson

    REGULATION AMENDMENT: Philip Fairey, Deputy Director, Florida Solar Energy Center COMMENTS CONCERNINGNOTICE OF PROPOSED REGULATION AMENDMENT Date: April 15, 2009 REGULATION TITLE: REGULATION NO.: Solar Thermal Collector and PV Module Testing Standards UCF-8.002 SUMMARY OF REGULATION AMENDMENT

  13. The Institutes of Technology [as amended by Institutes of Technology,] (Amendment, Act, 1963.

    E-Print Network [OSTI]

    Sivalingam, Krishna M.

    The Institutes of Technology Act, 1961 [as amended by Institutes of Technology,] (Amendment, Act, 1963.] Indian Institute of Technology, Powai, Bombay ­ 400 076 #12;THE INSTITUTES OF TECHNOLOGY ACT. THE SCHEDULE #12;THE INSTITUTES OF TECHNOLOGY, ACT, 1961 No. 59 of 1961 [as amended by Institutes of Technology

  14. amendments: Topics by E-print Network

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

    (Amended 1293) OMB NO 00648-0013 EXP 6302013 DEALER REPORTING FOR COASTAL FISHERIES QUOTA MONITORING Environmental Sciences and Ecology Websites Summary: NOAA Form 88-12...

  15. Microsoft Word - Alcoa_amendment_CX.docx

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

    level of service under an existing power sales contract to a facility (the Intalco smelter) that is already in existence and currently operating. The amendment would extend...

  16. Reasoning with Concrete Domains Carsten Lutz

    E-Print Network [OSTI]

    Lutz, Carsten

    Reasoning with Concrete Domains Carsten Lutz RWTH Aachen, LuFg Theoretical Computer Science. Concrete domains allow the integration of description logic reasoning with reasoning about concrete objects for building real­world applications, is widely accepted. How­ ever, the complexity of reasoning with concrete

  17. NCC Technical Training Opportunity in Concrete

    E-Print Network [OSTI]

    NCC Technical Training Opportunity in Concrete Pavement Technology National Concrete Consortium training through the National Concrete Pavement Technology Center (CP Tech Center). · Michigan Tech for Concrete Pavement: You may select specific subjects within the manual for emphasis if that is of interest

  18. EIS-0441: Amended Notice of Availability of a Draft Environmental...

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

    Amended Notice of Availability of a Draft Environmental Impact Statement EIS-0441: Amended Notice of Availability of a Draft Environmental Impact Statement Mohave County Wind Farm...

  19. Sulfur Isotopes as Indicators of Amended Bacterial Sulfate Reduction...

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

    of Amended Bacterial Sulfate Reduction Processes Influencing Field Scale Uranium Bioremediation. Sulfur Isotopes as Indicators of Amended Bacterial Sulfate Reduction Processes...

  20. Amended Application for Presidential Permit OE Docket No: PP...

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

    PP-371 Amended Northern Pass Transmission FRN More Documents & Publications Amended Notice of Intent To Modify the Scope of the EIS and Conduct Additional Public Scoping Meetings,...

  1. Amendment to Funding Opportunity Announcement, DE-FOA-0000522...

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

    Amendment to Funding Opportunity Announcement, DE-FOA-0000522: Geothermal Technology Advancement for Rapid Development of Resources in the U.S. Amendment to Funding Opportunity...

  2. Testing of concrete by laser ablation

    DOE Patents [OSTI]

    Flesher, Dann J. (Benton City, WA); Becker, David L. (Kennewick, WA); Beem, William L. (Kennewick, WA); Berry, Tommy C. (Kennewick, WA); Cannon, N. Scott (Kennewick, WA)

    1997-01-01T23:59:59.000Z

    A method of testing concrete in a structure in situ, by: directing a succession of pulses of laser radiation at a point on the structure so that each pulse effects removal of a quantity of concrete and transfers energy to the concrete; detecting a characteristic of energy which has been transferred to the concrete; determining, separately from the detecting step, the total quantity of concrete removed by the succession of pulses; and calculating a property of the concrete on the basis of the detected energy characteristic and the determined total quantity of concrete removed.

  3. Testing of concrete by laser ablation

    DOE Patents [OSTI]

    Flesher, D.J.; Becker, D.L.; Beem, W.L.; Berry, T.C.; Cannon, N.S.

    1997-01-07T23:59:59.000Z

    A method is disclosed for testing concrete in a structure in situ, by: directing a succession of pulses of laser radiation at a point on the structure so that each pulse effects removal of a quantity of concrete and transfers energy to the concrete; detecting a characteristic of energy which has been transferred to the concrete; determining, separately from the detecting step, the total quantity of concrete removed by the succession of pulses; and calculating a property of the concrete on the basis of the detected energy characteristic and the determined total quantity of concrete removed. 1 fig.

  4. CONCRETE PAVING & TEXTURING FOR SUSTAINABILITY

    E-Print Network [OSTI]

    Minnesota, University of

    CONCRETE PAVING & TEXTURING FOR SUSTAINABILITY Bernard Igbafen Izevbekhai, Research Operations 2012 #12;OUTLINE #12;SUSTAINABILITY · Meeting the needs of the present generation without compromising Brundtland Commission in 1987: · Successful application of the principles of sustainable development lies

  5. Corrosion resistance of concrete reinforcement

    E-Print Network [OSTI]

    Ward-Waller, Elizabeth, 1982-

    2005-01-01T23:59:59.000Z

    The objective of this thesis is to investigate the mechanism of corrosion of steel reinforcement in concrete and epoxy coated reinforcing bars as corrosion resistant alternatives. Several case studies explore the durability ...

  6. Nanogranular origin of concrete creep

    E-Print Network [OSTI]

    Vandamme, Matthieu

    Concrete, the solid that forms at room temperature from mixing Portland cement with water, sand, and aggregates, suffers from time-dependent deformation under load. This creep occurs at a rate that deteriorates the durability ...

  7. Electrically conductive polymer concrete coatings

    DOE Patents [OSTI]

    Fontana, J.J.; Elling, D.; Reams, W.

    1990-03-13T23:59:59.000Z

    A sprayable electrically conductive polymer concrete coating for vertical d overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt % calcined coke breeze, 40 wt % vinyl ester with 3.5 wt % modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag.

  8. Electrically conductive polymer concrete coatings

    DOE Patents [OSTI]

    Fontana, Jack J. (Shirley, NY); Elling, David (Centereach, NY); Reams, Walter (Shirley, NY)

    1990-01-01T23:59:59.000Z

    A sprayable electrically conductive polymer concrete coating for vertical d overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt % calcined coke breeze, 40 wt % vinyl ester with 3.5 wt % modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag.

  9. Electrically conductive polymer concrete coatings

    DOE Patents [OSTI]

    Fontana, J.J.; Elling, D.; Reams, W.

    1988-05-26T23:59:59.000Z

    A sprayable electrically conductive polymer concrete coating for vertical and overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt% calcined coke breeze, 40 wt% vinyl ester resin with 3.5 wt% modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag. 4 tabs.

  10. Treatment of fly ash for use in concrete

    SciTech Connect (OSTI)

    Boxley, Chett; Akash, Akash; Zhao, Qiang

    2013-01-08T23:59:59.000Z

    A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with an activator solution sufficient to initiate a geopolymerization reaction and for a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 35% of the foam index of the untreated fly ash, and in some cases less than 10% of the foam index of the untreated fly ash. The activator solution may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof.

  11. Treatment of fly ash for use in concrete

    DOE Patents [OSTI]

    Boxley, Chett (Park City, UT); Akash, Akash (Salt lake City, UT); Zhao, Qiang (Natick, MA)

    2012-05-08T23:59:59.000Z

    A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with an activator solution sufficient to initiate a geopolymerization reaction and for a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 35% of the foam index of the untreated fly ash, and in some cases less than 10% of the foam index of the untreated fly ash. The activator solution may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof.

  12. Treatment of fly ash for use in concrete

    DOE Patents [OSTI]

    Boxley, Chett (Park City, UT)

    2012-05-15T23:59:59.000Z

    A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with a quantity of spray dryer ash (SDA) and water to initiate a geopolymerization reaction and form a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 40%, and in some cases less than 20%, of the foam index of the untreated fly ash. An optional alkaline activator may be mixed with the fly ash and SDA to facilitate the geopolymerization reaction. The alkaline activator may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof.

  13. Seismic design, testing and analysis of reinforced concrete wall buildings

    E-Print Network [OSTI]

    Panagiotou, Marios

    2008-01-01T23:59:59.000Z

    based on the material testing data of concrete cylinders inDESIGN, TESTING AND ANALYSIS OF REINFORCED CONCRETE WALLDESIGN, TESTING AND ANALYSIS OF REINFORCED CONCRETE WALL

  14. Reliability based assessment of FRP rehabilitation of reinforced concrete girders

    E-Print Network [OSTI]

    Wilcox, Patrick Carlo

    2008-01-01T23:59:59.000Z

    Polymer Reinforcing Bars in Concrete Environment. 2002 ,Corrosion of Steel in Concrete; Wiley-VCH: Weinheim, 2004.Mitchell, D. Prestressed Concrete Structures; Prentice Hall:

  15. Seismic design, testing and analysis of reinforced concrete wall buildings

    E-Print Network [OSTI]

    Panagiotou, Marios

    2008-01-01T23:59:59.000Z

    of Slender Reinforced Concrete Walls”. Structural Journal,T. (1975). “Reinforced Concrete Structures”. John Wiley &Design of Reinforced Concrete and Masonry Buildings”. John

  16. Nonlinear seismic response analysis of steel-concrete composite frames

    E-Print Network [OSTI]

    Barbato, Michele

    2008-01-01T23:59:59.000Z

    formulation of nonlinear steel- concrete composite beam ele-Behaviour of Composite Steel and Concrete Struc- turalE. (2001). “Analysis of steel-concrete composite frames with

  17. Large-Scale Testing of Steel-Reinforced Concrete (SRC) Coupling Beams Embedded into Reinforced Concrete Structural Walls

    E-Print Network [OSTI]

    Motter, Christopher John

    2014-01-01T23:59:59.000Z

    Concrete Cylinder Testing the latter stages of testing, concrete spalling was observedObtained from Concrete Cylinder Testing f' c,test (ksi) ? 0,

  18. Center for By-Products Utilization Sustainable Concrete with

    E-Print Network [OSTI]

    Saldin, Dilano

    , and emission of greenhouse gases, by using recycled materials. · The global potential for CO2 reduction through; Responsible for about 7% of total anthropogenic CO2 emissions; and, Each construction activity involving-Products Utilization Why Sustainable Concrete? (cont'd) Global CO2 emissions from fossil fuels use and cement

  19. Regulation 8: Responsibility for Creation and Amendment of Regulations: REGULATION 8: RESPONSIBILITY FOR CREATION AND AMENDMENT OF

    E-Print Network [OSTI]

    Sussex, University of

    Regulation 8: Responsibility for Creation and Amendment of Regulations: 36 REGULATION 8: RESPONSIBILITY FOR CREATION AND AMENDMENT OF REGULATIONS This Regulation may only be amended at a meeting and revoke Regulations. Regulations may be created, amended and revoked at any meeting of Council. 2

  20. AMENDED

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

    and is consistent with the objectives of the US Department of Agriculture to develop alternative and renewable energy sources and to support creation of new businesses. The...

  1. Report on aging of nuclear power plant reinforced concrete structures

    SciTech Connect (OSTI)

    Naus, D.J.; Oland, C.B. [Oak Ridge National Lab., TN (United States); Ellingwood, B.R. [Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Civil Engineering

    1996-03-01T23:59:59.000Z

    The Structural Aging Program provides the US Nuclear Regulatory Commission with potential structural safety issues and acceptance criteria for use in continued service assessments of nuclear power plant safety-related concrete structures. The program was organized under four task areas: Program Management, Materials Property Data Base, Structural Component Assessment/Repair Technology, and Quantitative Methodology for Continued Service Determinations. Under these tasks, over 90 papers and reports were prepared addressing pertinent aspects associated with aging management of nuclear power plant reinforced concrete structures. Contained in this report is a summary of program results in the form of information related to longevity of nuclear power plant reinforced concrete structures, a Structural Materials Information Center presenting data and information on the time variation of concrete materials under the influence of environmental stressors and aging factors, in-service inspection and condition assessments techniques, repair materials and methods, evaluation of nuclear power plant reinforced concrete structures, and a reliability-based methodology for current and future condition assessments. Recommendations for future activities are also provided. 308 refs., 61 figs., 50 tabs.

  2. Nuclear Facility Construction - Structural Concrete, May 29,...

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

    Nuclear Facility Construction - Structural Concrete, May 29, 2009 (HSS CRAD 64-15, Rev. 0) Nuclear Facility Construction - Structural Concrete, May 29, 2009 (HSS CRAD 64-15, Rev....

  3. The behaviour of concrete structures in fire 

    E-Print Network [OSTI]

    Fletcher, Ian A; Welch, Stephen; Torero, Jose L; Carvel, Ricky O; Usmani, Asif

    2007-03-29T23:59:59.000Z

    The nature of concrete-based structures means that they generally perform very well in fire. However, concrete is a complex material and its properties can change dramatically when exposed to high temperatures. This paper provides a ‘state...

  4. PERFORMANCE-RELATED SPECIAL PROVISION FOR HIGH PERFORMANCE CONCRETE MIX DESIGNS FOR CONCRETE SUPERSTRUCTURE (Tollway)

    E-Print Network [OSTI]

    PERFORMANCE-RELATED SPECIAL PROVISION FOR HIGH PERFORMANCE CONCRETE MIX DESIGNS FOR CONCRETE of designing and furnishing high performance portland cement concrete for special applications to the decks the Illinois Tollway with a methodology to assure high quality concrete with reduced shrinkage potential, while

  5. ACHIEVING "GREEN" CONCRETE THROUGH THE USE OF HIGH PERFORMANCE FIBER REINFORCED CONCRETE

    E-Print Network [OSTI]

    Chao, Shih-Ho

    , the porous and brittle nature of concrete, when interacting with environmental actions such as weathering1 ACHIEVING "GREEN" CONCRETE THROUGH THE USE OF HIGH PERFORMANCE FIBER REINFORCED CONCRETE Shih-Ho Chao1 , A. M., ASCE ABSTRACT Concrete is one of the most widely used materials for infrastructure all

  6. Petroleum: The Petroleum (Production) (Amendment) Regulations, 1957 

    E-Print Network [OSTI]

    Her Majesty's Stationary Office

    1957-01-01T23:59:59.000Z

    These Regulations amend the Petroleum (Production) Regulations, 1935, which set out the requirements for applications for, and the model clauses to be incorporated in, prospecting and mining licences issued under the Petroleum (Production) Act, 1934...

  7. Clean Air Act Amendments of 1990

    E-Print Network [OSTI]

    Hanneschlager, R. E.

    Congress is currently debating amendments to the Clean Air Act which would strengthen and enhance the current Clean Air Act. The bill would guarantee a reduction of 10 million tons of sulfur dioxide from 1980 levels; would sharply reduce pollutants...

  8. RFP Amendment_002a.pdf

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

    2 Page 2 of 2 Block 14 "DESCRIPTION OF AMENDMENTMODIFICATION," continued. This amendment is issued to revise Request for Proposal No. DE-SOL-0001458 as described herein. Deletions...

  9. Cleaning Up the Eighth Amendment Mess

    E-Print Network [OSTI]

    Stacy, Tom

    2005-01-01T23:59:59.000Z

    This article critiques the Court's interpretation of the Eighth Amendment's Cruel and Unusual Punishment Clause and defends an alternative understanding. The Court's jurisprudence is plagued by deep inconsistencies concerning ...

  10. Undesired drying of concrete and cement paste

    E-Print Network [OSTI]

    Langendoen, Koen

    Undesired drying of concrete and cement paste is a nightmare for any construction engineer of the concrete or cement paste surface. Inspired by the art of molecular cooking a team of TU Delft scientists for instance sodium alginates. When sprayed on the surface of concrete or cement paste, a rapid chemical

  11. Recommended Practice for Accepting New Concrete Pavement

    E-Print Network [OSTI]

    Recommended Practice for Accepting New Concrete Pavement Surfaces for Tire/Pavement Noise Designation: CPSCP PP 1-11 (rev 3/1/2011) National Concrete Pavement Technology Center 2711 South Loop Drive, Suite 4700 Ames, IA 50010 #12;PP 1-1 CPSCP Recommended Practice for Accepting New Concrete Pavement

  12. PCC Mix Designs Using Recycled Concrete

    E-Print Network [OSTI]

    Minnesota, University of

    PCC Mix Designs Using Recycled Concrete Pavements Mary E. Vancura, Derek Tompkins, & Lev Khazanovich 21st Annual Transportation Research Conference #12;·! Reassessment of recycled concrete aggregate (RCA) use in rigid pavements ·! History of RCA use ·! Characteristics of RCA concrete ·! RCA production

  13. Concrete Domains and Nominals United Carlos Areces

    E-Print Network [OSTI]

    Lutz, Carsten

    Concrete Domains and Nominals United Carlos Areces University of Amsterdam The Netherlands carlos(D), the extension of ALC with concrete domains, is known to be PSpace-complete, in this article we show on the concrete domain D used). The proof is by a reduction of a NExpTime-complete variant of the domino problem

  14. Quick-setting concrete and a method for making quick-setting concrete

    DOE Patents [OSTI]

    Wagh, Arun S. (Joliet, IL); Singh, Dileep (Westmont, IL); Pullockaran, Jose D. (Trenton, NJ); Knox, Lerry (Glen Ellyn, IL)

    1997-01-01T23:59:59.000Z

    A method for producing quick setting concrete is provided comprising hydrng a concrete dry mixture with carbonate solution to create a slurry, and allowing the slurry to cure. The invention also provides for a quick setting concrete having a predetermined proportion of CaCO.sub.3 of between 5 and 23 weight percent of the entire concrete mixture, and whereby the concrete has a compression strength of approximately 4,000 pounds per square inch (psi) within 24 hours after pouring.

  15. Amendment 80 vessel replacement 1 Implementation and of Amendment 80 Vessel Replacement Provisions

    E-Print Network [OSTI]

    Amendment 80 vessel replacement 1 Implementation and of Amendment 80 Vessel Replacement Provisions vessels to use non-qualifying vessels in the sector, thus allowing replacement of a lost qualifying vessel of the CRP ambiguous as to whether replacement of qualifying vessels with non-qualifying vessels

  16. DOE Notice of Proposed Rulemaking to Amend the External Power...

    Office of Environmental Management (EM)

    Proposed Rulemaking to Amend the External Power Supply Test Procedure; Docket No. EERE-2014-BT-TP-0043 RIN 1904-AD36 DOE Notice of Proposed Rulemaking to Amend the External Power...

  17. NOTICE OF PROPOSED REGULATION AMENDMENT Date: August 18, 2005

    E-Print Network [OSTI]

    Wu, Shin-Tson

    , Deputy Director of Florida Solar Energy Center COMMENTS CONCERNING THE PROPOSED REGULATION AMENDMENTNOTICE OF PROPOSED REGULATION AMENDMENT Date: August 18, 2005 REGULATION TITLE: REGULATION NO OF REGULATION AMENDMENT: This regulation is revised significantly to reflect updated naming conventions

  18. NOTICE OF PROPOSED REGULATION AMENDMENT Date: April 15, 2009

    E-Print Network [OSTI]

    Wu, Shin-Tson

    , Florida Solar Energy Center COMMENTS CONCERNING THE PROPOSED REGULATION AMENDMENT SHOULD BE SUBMITTEDNOTICE OF PROPOSED REGULATION AMENDMENT Date: April 15, 2009 REGULATION TITLE: REGULATION NO.: Solar Thermal and Photovoltaic System Standards UCF-8.005 and Certification SUMMARY OF REGULATION

  19. FLORIDA ATLANTIC UNIVERSITY NOTICE OF PROPOSED REGULATION AMENDMENT

    E-Print Network [OSTI]

    Richman, Fred

    and Loitering, was last amended in November 1987 and requires amendment to conform with new administrative/REPEAL OF REGULATIONS IS: Myrlande Dessalines, Paralegal, Office of the General Counsel, 777 Glades Road, Boca Raton

  20. FLORIDA ATLANTIC UNIVERSITY NOTICE OF PROPOSED REGULATION AMENDMENT

    E-Print Network [OSTI]

    Richman, Fred

    .005 was last amended in November 1987 and required amendment to conform with new administrative titles Dessalines, Paralegal, Office of the General Counsel, 777 Glades Road, Boca Raton, Florida, 33431, (561) 297

  1. INTERIM REPORT ON CONCRETE DEGRADATION MECHANISMS AND ONLINE MONITORING TECHNIQUES

    SciTech Connect (OSTI)

    Mahadevan, Sankaran; Agarwal, Vivek; Neal, Kyle; Kosson, David; Adams, Douglas

    2014-09-01T23:59:59.000Z

    The existing fleets of nuclear power plants in the United States have initial operating licenses of 40 years, though most these plants have applied for and received license extensions. As plant structures, systems, and components age, their useful life—considering both structural integrity and performance—is reduced as a result of deterioration of the materials. The online monitoring of concrete structure conducted under the Advanced Instrumentation, Information, and Control Technologies Pathway of the Light Water Reactor Sustainability program at Idaho National Laboratory will develop and demonstrate concrete structures health monitoring capabilities. Assessment and management of aging concrete structures in nuclear plants require a more systematic approach than simple reliance on existing code margins of safety. Therefore, the structural health monitoring is required to produce actionable information regarding structural integrity that supports operational and maintenance decisions. Through this research project, several national laboratories and Vanderbilt University proposes to develop a framework of research activities for the health monitoring of nuclear power plant concrete structures that includes integration of four elements—damage modeling, monitoring, data analytics, and uncertainty quantification. This report briefly discusses available techniques and ongoing challenges in each of the four elements of the proposed framework with emphasis on degradation mechanisms and online monitoring techniques.

  2. Application for Amendment 80 Vessel Replacement Page 1 of 6

    E-Print Network [OSTI]

    Application for Amendment 80 Vessel Replacement Page 1 of 6 Revised: 12/23/2013 OMB Control No. 0648-0565 Expiration Date: 01/31/2016 APPLICATION FOR AMENDMENT 80 VESSEL REPLACEMENT United States OF THE AMENDMENT 80 VESSEL BEING REPLACED 1. Vessel Name: 2. ADF&G Vessel Registration No.: 3. USCG Documentation

  3. November 18, 2011 Amendment to Patent Acknowledgment or Agreement;

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    November 18, 2011 Amendment to Patent Acknowledgment or Agreement; Look for E-mail during Week University resources or facilities sign an amendment to the patent document signed by all employees when the Patent Amendment process that commences the week of November 28, 2011. Background The Patent

  4. NOTICE OF PROPOSED REGULATION AMENDMENT Date: August 18, 2005

    E-Print Network [OSTI]

    Wu, Shin-Tson

    .: Florida Solar Energy Center Operations 6C7-8.001 SUMMARY OF REGULATION AMENDMENT: This regulation is revised to update the location of the Florida Solar Energy Center. This regulation is amended also of Florida Solar Energy Center COMMENTS CONCERNING THE PROPOSED REGULATION AMENDMENT SHOULD BE SUBMITTED

  5. NOTICE OF PROPOSED REGULATION AMENDMENT Date: April 15, 2009

    E-Print Network [OSTI]

    Wu, Shin-Tson

    .: Florida Solar Energy Center Operations UCF-8.001 SUMMARY OF REGULATION AMENDMENT: The regulation Director, Florida Solar Energy Center COMMENTS CONCERNING THE PROPOSED REGULATION AMENDMENT SHOULD TEXT OF THE PROPOSED REGULATION AMENDMENT: UCF6C7-8.001 Florida Solar Energy Center Operations. (1

  6. NOTICE OF PROPOSED REGULATION AMENDMENT Date: August 18, 2005

    E-Print Network [OSTI]

    Wu, Shin-Tson

    Director of Florida Solar Energy Center COMMENTS CONCERNING THE PROPOSED REGULATION AMENDMENT SHOULDNOTICE OF PROPOSED REGULATION AMENDMENT Date: August 18, 2005 REGULATION TITLE: REGULATION NO.: Testing Fees, Testing, Inspection, Services 6C7-8.004 SUMMARY OF REGULATION AMENDMENT: This regulation has

  7. NOTICE OF PROPOSED REGULATION AMENDMENT Date: August 18, 2005

    E-Print Network [OSTI]

    Wu, Shin-Tson

    PROPOSED REGULATION AMENDMENT: Philip Fairey, Deputy Director of Florida Solar Energy Center COMMENTSNOTICE OF PROPOSED REGULATION AMENDMENT Date: August 18, 2005 REGULATION TITLE: REGULATION NO.: Solar Collector Certification 6C7-8.003 SUMMARY OF REGULATION AMENDMENT: This regulation is revised

  8. NOTICE OF PROPOSED REGULATION AMENDMENT Date: August 18, 2005

    E-Print Network [OSTI]

    Wu, Shin-Tson

    PROPOSED REGULATION AMENDMENT: Philip Fairey, Deputy Director of Florida Solar Energy Center COMMENTSNOTICE OF PROPOSED REGULATION AMENDMENT Date: August 18, 2005 REGULATION TITLE: REGULATION NO.: Solar Collector Testing Standards 6C7-8.002 SUMMARY OF REGULATION AMENDMENT: This regulation is revised

  9. NOTICE OF PROPOSED REGULATION AMENDMENT Date: March 22, 2007

    E-Print Network [OSTI]

    Wu, Shin-Tson

    .: Florida Solar Energy Center Operations 6C7-8.001 SUMMARY OF REGULATION AMENDMENT: The amendments INITIATED PROPOSED REGULATION AMENDMENT: Philip Fairey, Deputy Director of Florida Solar Energy CenterC7-8.001 Florida Solar Energy Center Operations. (1) The Florida Solar Energy Center, (herein called

  10. EFFECTIVE TENSILE STRESS-STRAIN CHARACTERISTICS FOR REINFORCED CONCRETE

    E-Print Network [OSTI]

    EFFECTIVE TENSILE STRESS-STRAIN CHARACTERISTICS FOR REINFORCED CONCRETE L. Hwang, Graduate Student of reinforced concrete structures, the concrete continues to contribute to the effective stiffness of structures for reinforced concrete developed for analysis of reinforced and/or prestressed concrete structures. The model

  11. Concrete Pour in NSLS-II Ring

    ScienceCinema (OSTI)

    Bruno Semon

    2013-07-22T23:59:59.000Z

    The mezzanine floor of the ring building tunnel for NSLS-II was completed when the last concrete was placed in February 2011.

  12. Pentek concrete scabbling system: Baseline report; Summary

    SciTech Connect (OSTI)

    NONE

    1997-07-31T23:59:59.000Z

    The Pentek concrete scabbling system consists of the MOOSE{reg_sign} scabbler, the SQUIRREL{reg_sign}-I and SQUIRREL{reg_sign}-III scabblers, and VAC-PAC. The scabblers are designed to scarify concrete floors and slabs using cross section, tungsten carbide tipped bits. The bits are designed to remove concrete in 3/8 inch increments. The bits are either 9-tooth or demolition type. The scabblers are used with a vacuum system designed to collect and filter the concrete dust and contamination that is removed from the surface. The safety and health evaluation during the human factors assessment focused on two main areas: noise and dust.

  13. Optimization Online - Concrete Structure Design Using Mixed ...

    E-Print Network [OSTI]

    Andres Guerra

    2009-11-26T23:59:59.000Z

    Nov 26, 2009 ... Abstract: We present a mixed-integer nonlinear programming (MINLP) formulation to achieve minimum-cost designs for reinforced concrete ...

  14. Thermal Analyses Thermal Resistance of Precast Concrete Wall Panels with Concrete

    E-Print Network [OSTI]

    Meyer, Christian

    ) analyses. 3-D analyses are more accurate since the concrete ribs act as thermal bridges to both horizontal considered are as follows: · cavity insulation thickness · concrete conductivity · stud channel conductivity channel increases too. The cavity R-value is calculated by ignoring the effect of the concrete web. Assume

  15. Development of a Reaction Signature for Combined Concrete Materials

    E-Print Network [OSTI]

    Ghanem, Hassan A.

    2010-07-14T23:59:59.000Z

    stresses in concrete. When those stresses exceed the tensile strength of concrete, cracks occur. The main objective of this study was to address a method of testing concrete materials as a combination to assist engineers to effectively mitigate ASR...

  16. Journal of Educational Psychology Applying Grounded Coordination Challenges to Concrete

    E-Print Network [OSTI]

    Journal of Educational Psychology Applying Grounded Coordination Challenges to Concrete Learning, M. I. (2013, August 19). Applying Grounded Coordination Challenges to Concrete Learning Materials.1037/a0034098 #12;Applying Grounded Coordination Challenges to Concrete Learning Materials: A Study

  17. Effect of confinement on shear dominated reinforced concrete elements

    E-Print Network [OSTI]

    Powanusorn, Suraphong

    2005-02-17T23:59:59.000Z

    ) to incorporate the effect of confinement due to transverse reinforcement by adjusting the peak stress and peak strain of confined concrete in compression. The peak stress of confined concrete was determined from the five-parameter failure surface for concrete...

  18. Effect of confinement on shear dominated reinforced concrete elements 

    E-Print Network [OSTI]

    Powanusorn, Suraphong

    2005-02-17T23:59:59.000Z

    ) to incorporate the effect of confinement due to transverse reinforcement by adjusting the peak stress and peak strain of confined concrete in compression. The peak stress of confined concrete was determined from the five-parameter failure surface for concrete...

  19. The life cycle assessment of concrete manufacturing in Kuwait

    E-Print Network [OSTI]

    El Mostafa, Mayce (Mayce A.)

    2013-01-01T23:59:59.000Z

    Concrete is the second most widely used material in the world after water. Annually 9,120 million tons of concrete are produced, which is an equivalent of 1.3 tons of concrete per individual. As the world's primary ...

  20. High temperature polymer concrete compositions

    DOE Patents [OSTI]

    Fontana, Jack J. (Shirley, NY); Reams, Walter (Shirley, NY)

    1985-01-01T23:59:59.000Z

    This invention is concerned with a polymer concrete composition, which is a two-component composition useful with many bases including metal. Component A, the aggregate composition, is broadly composed of silica, silica flour, portland cement, and acrylamide, whereas Component B, which is primarily vinyl and acrylyl reactive monomers, is a liquid system. A preferred formulation emphasizing the major necessary components is as follows: ______________________________________ Component A: Silica sand 60-77 wt. % Silica flour 5-10 wt. % Portland cement 15-25 wt. % Acrylamide 1-5 wt. % Component B: Styrene 50-60 wt. % Trimethylolpropane 35-40 wt. % trimethacrylate ______________________________________ and necessary initiators, accelerators, and surfactants.

  1. Learning from Roman Seawater Concrete

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 -ofLearning from Roman Seawater Concrete Print

  2. Learning from Roman Seawater Concrete

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 -ofLearning from Roman Seawater Concrete

  3. San Francisco Building Code Amendments to the

    E-Print Network [OSTI]

    1 2010 San Francisco Building Code Amendments to the 2010 California Green Building Standards Code not pertain to energy) Operative date: January 1, 2011 #12;139 Chapter 13C GREEN BUILDING REQUIREMENTS shall be known as the California San Francisco Green Building Standards Code and may be cited

  4. San Francisco Building Code Amendments to the

    E-Print Network [OSTI]

    Green Building Standards Code 2010 California Residential Code Operative date: January 1, 2011 #12;2 #121 2010 San Francisco Building Code Amendments to the 2010 California Building Code 2010 California;3 CHAPTER 1 SCOPE AND ADMINISTRATION DIVISION I CALIFORNIA ADMINISTRATION No San Francisco Building Code

  5. Quick-setting concrete and a method for making quick-setting concrete

    DOE Patents [OSTI]

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

    1997-04-29T23:59:59.000Z

    A method for producing quick setting concrete is provided comprising mixing a concrete dry mixture with carbonate solution to create a slurry, and allowing the slurry to cure. The invention also provides for a quick setting concrete having a predetermined proportion of CaCO{sub 3} of between 5 and 23 weight percent of the entire concrete mixture, and whereby the concrete has a compression strength of approximately 4,000 pounds per square inch (psi) within 24 hours after pouring. 2 figs.

  6. Radionuclide Retention in Concrete Wasteforms

    SciTech Connect (OSTI)

    Wellman, Dawn M.; Jansik, Danielle P.; Golovich, Elizabeth C.; Cordova, Elsa A.

    2012-09-24T23:59:59.000Z

    Assessing long-term performance of Category 3 waste cement grouts for radionuclide encasement requires knowledge of the radionuclide-cement interactions and mechanisms of retention (i.e., sorption or precipitation); the mechanism of contaminant release; the significance of contaminant release pathways; how wasteform performance is affected by the full range of environmental conditions within the disposal facility; the process of wasteform aging under conditions that are representative of processes occurring in response to changing environmental conditions within the disposal facility; the effect of wasteform aging on chemical, physical, and radiological properties; and the associated impact on contaminant release. This knowledge will enable accurate prediction of radionuclide fate when the wasteforms come in contact with groundwater. Data collected throughout the course of this work will be used to quantify the efficacy of concrete wasteforms, similar to those used in the disposal of LLW and MLLW, for the immobilization of key radionuclides (i.e., uranium, technetium, and iodine). Data collected will also be used to quantify the physical and chemical properties of the concrete affecting radionuclide retention.

  7. SURVEY OF MODELS FOR CONCRETE DEGRADATION

    SciTech Connect (OSTI)

    Spencer, Benjamin W [Idaho National Laboratory; Huang, Hai [Idaho Nation Laboratory

    2014-08-01T23:59:59.000Z

    Concrete has been used in the construction of nuclear facilities because of two primary properties: its structural strength and its ability to shield radiation. Concrete structures have been known to last for hundreds of years, but they are also known to deteriorate in very short periods of time under adverse conditions. The use of concrete in nuclear facilities for containment and shielding of radiation and radioactive materials has made its performance crucial for the safe operation of the facility. The goal of this report is to review and document the main aging mechanisms of concern for concrete structures in nuclear power plants (NPPs) and the models used in simulations of concrete aging and structural response of degraded concrete structures. This is in preparation for future work to develop and apply models for aging processes and response of aged NPP concrete structures in the Grizzly code. To that end, this report also provides recommendations for developing more robust predictive models for aging effects of performance of concrete.

  8. Comprehensive Database on Concrete Creep and Shrinkage

    E-Print Network [OSTI]

    Comprehensive Database on Concrete Creep and Shrinkage Zdenek P. Bazant and Guang-Hua Li Structural Database on Concrete Creep and Shrinkage Zdenek P. Bazant1 and Guang-Hua Li2 Abstract: As a sequel to the first large database created at Northwestern University in 1978, the paper presents a further

  9. Semirealism, Concrete Structures and Theory Change Michel Ghins

    E-Print Network [OSTI]

    Chakravartty, Anjan

    Semirealism, Concrete Structures and Theory Change Michel Ghins Received: 15 November 2012 metaphysics for scientific realism. First, if particulars and laws are concrete structures, namely actual

  10. aggregate concrete beams: Topics by E-print Network

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

    FIBRE REINFORCED HIGH PERFORMANCE CONCRETE Engineering Websites Summary: -456 STEEL FIBRE REINFORCED HIGH PERFORMANCE CONCRETE BEAM-COLUMN JOINTS SUBJECTED TO CYCLIC LOADING...

  11. autoclaved aerated concrete: Topics by E-print Network

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

    on the compressive, flexural strength, and split tensile test of polymer modified steel fibre reinforced concrete (PSFC) concrete was examined. Including SBR latex at a certain %...

  12. STRUCTURAL PERFORMANCE OF DEGRADED REINFORCED CONCRETE MEMBERS.

    SciTech Connect (OSTI)

    Braverman, J.I.; Miller, C.A.; Ellingwood, B.R.; Naus, D.J.; Hofmayer, C.H.; Bezler, P.; Chang, T.Y.

    2001-03-22T23:59:59.000Z

    This paper describes the results of a study to evaluate, in probabilistic terms, the effects of age-related degradation on the structural performance of reinforced concrete members at nuclear power plants. The paper focuses on degradation of reinforced concrete flexural members and shear walls due to the loss of steel reinforcing area and loss of concrete area (cracking/spalling). Loss of steel area is typically caused by corrosion while cracking and spalling can be caused by corrosion of reinforcing steel, freeze-thaw, or aggressive chemical attack. Structural performance in the presence of uncertainties is depicted by a fragility (or conditional probability of failure). The effects of degradation on the fragility of reinforced concrete members are calculated to assess the potential significance of various levels of degradation. The fragility modeling procedures applied to degraded concrete members can be used to assess the effects of degradation on plant risk and can lead to the development of probability-based degradation acceptance limits.

  13. Modeling of Sulfate Resistance of Flyash Blended Cement Concrete Materials

    E-Print Network [OSTI]

    Mobasher, Barzin

    Modeling of Sulfate Resistance of Flyash Blended Cement Concrete Materials Barzin Mobasher1. A simplified model is presented which used cement chemistry, concrete physics, and mechanics to develop of hardened concrete, principally the cement paste, caused by exposure of concrete to sulfates and moisture

  14. Center for By-Products Utilization High Durability Concrete Using

    E-Print Network [OSTI]

    Saldin, Dilano

    TESTING · Fresh Concrete Properties ·Unit Weight (ASTM C 138) ·Air Content (ASTM C 237) ·Slump (ASTM C 143Center for By-Products Utilization High Durability Concrete Using High-Carbon Fly Ash and Pulp Mill-Products Utilization Durable Concrete in Northern Climates · Producing durable concrete in a freezing and thawing

  15. Concrete and Sustainable Development Special Publication ACI 206, 2002

    E-Print Network [OSTI]

    Meyer, Christian

    C. Meyer Concrete and Sustainable Development 1 Special Publication ACI 206, 2002 Concrete Materials Science to Application ­ A Tribute to Surendra P. Shah American Concrete Institute, Farmington Hills, MI Concrete and Sustainable Development By C. Meyer Synopsis: The United States is a country

  16. 1 INTRODUCTION 1.1 Textile reinforced concrete

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 INTRODUCTION 1.1 Textile reinforced concrete Textile reinforced concrete (TRC) is a new cementi on the funda- mentals of shortcut glass fibre reinforced concrete. In order to increase the effectiveness of the fibres embedded in the concrete matrix, the fibres are aligned in the direction of the tensile stresses

  17. Model-Driven Analysis and Synthesis of Textual Concrete Syntax

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Model-Driven Analysis and Synthesis of Textual Concrete Syntax Pierre-Alain Muller1 , Frédéric textual concrete syntaxes with meta-models is still a challenge. Textual concrete syntaxes compilers to generate parsers. Unfortunately, these generated parsers produce concrete syntax trees, leaving

  18. Carbon dioxide sequestration in concrete in different curing environments

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Carbon dioxide sequestration in concrete in different curing environments Y.-m. Chun, T.R. Naik, USA ABSTRACT: This paper summarizes the results of an investigation on carbon dioxide (CO2) sequestration in concrete. Concrete mixtures were not air entrained. Concrete mixtures were made containing

  19. Amr Abdelrahman, PhD Professor of Concrete Structures,

    E-Print Network [OSTI]

    Amr Abdelrahman, PhD Professor of Concrete Structures, Structural Engineering Dept., Ain Shams Behavior and Design of Reinforced and Prestressed Concrete Structures and Masonry Wall Design. He conducts concrete members and design of prestressed concrete members. He is a member in the Egyptian Code for Design

  20. POURED EARTH AS CONCRETE Lionel RONSOUX, Mariette MOEVUS, Yves JORAND,

    E-Print Network [OSTI]

    Boyer, Edmond

    1 POURED EARTH AS CONCRETE Lionel RONSOUX, Mariette MOEVUS, Yves JORAND, Sandrine MAXIMILIEN and Contemporary Architecture Keywords: poured earth, clay concrete, grain packing, clay dispersion Abstract: In order to pour an earthen material in a liquid state, as a concrete, technologies used by concrete

  1. Efficacy of soluble sodium tripolyphosphate amendments for the...

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

    of soluble sodium tripolyphosphate amendments for the in-situ immobilisation of uranium."Environmental Chemistry 4:293-300. Authors: DM Wellman EM Pierce MM Valenta...

  2. amending council directive: Topics by E-print Network

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

    Council Columbia River Basin Fish and Wildlife Program Power Transmission, Distribution and Plants Websites Summary: recommendations for amendments to the Council's...

  3. The Nuclear Installations (Dangerous Occurrences )(Amendment) Regulations 1963 

    E-Print Network [OSTI]

    Wood, Richard; Noble, Michael

    1963-01-01T23:59:59.000Z

    STATUTORY INSTRUMENTS 1963 No. 1358 ATOMIC ENERGY AND RADIOACTIVE SUBSTANCES LICENSING AND REGULATION OF SITES The Nuclear Installations (Dangerous Occurrences) (Amendment) Regulations 1963...

  4. amendments irritate businesses: Topics by E-print Network

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

    Management Studies Business and Management Studies (with a professional placement year) Business with Human Resource Sussex, University of 42 Date Created: 2006 Date Amended...

  5. EIS-0431: Amended Notice of Intent to Prepare an Environmental...

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

    Involvement Hydrogen Energy California's Integrated Gasification Combined Cycle and Carbon Capture and Sequestration Project, Kern County, CA DOE is publishing this Amended...

  6. amending regulation ec: Topics by E-print Network

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

    students that a parking space will be available at all times. (6) Annual, or semester, monthly, weekly or daily term Pilyugin, Sergei S. 205 Certificate of Compliance Amendment...

  7. air act amendments: Topics by E-print Network

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

    SHARES. (1) This amendment authorizes: (A) an eligible entity holding processor quota shares to elect on an annual basis for the Northern Region; and (B) an eligible entity...

  8. air act amendment: Topics by E-print Network

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

    SHARES. (1) This amendment authorizes: (A) an eligible entity holding processor quota shares to elect on an annual basis for the Northern Region; and (B) an eligible entity...

  9. amendment regulations northern: Topics by E-print Network

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

    students that a parking space will be available at all times. (6) Annual, or semester, monthly, weekly or daily term Pilyugin, Sergei S. 200 Certificate of Compliance Amendment...

  10. Application to Amend Presidential Permit OE Docket No. PP-022...

    Energy Savers [EERE]

    to construct, operate and maintain electric transmission facilities at the U.S. - Canada Border: Federal Register Notice Application to Amend Presidential Permit OE Docket No....

  11. Remedial Amendment Delivery near the Water Table Using Shear...

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

    amendment migrated with the xanthan SFT without retardation. Despite the high viscosity of the STF, no excessive mounding or preferential flow were observed in the...

  12. Amended Application for Presidential Permit OE Docket No. PP...

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

    Line: Federal Register Notice, Volume 79, No. 222 - Nov. 18, 2014 Amended Application for Presidential Permit OE Docket No. PP-398 Minnesota Power - Great Northern Transmission...

  13. alnus rubra amended: Topics by E-print Network

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

    Amended by F96 in the all-University requirements as presented by Dr. Theodore Norton, Chairman of the Curriculum Committee. (Passed: Meeting of 22673) Copies sent to...

  14. Progress Update: H4 Basin Concrete Pour

    ScienceCinema (OSTI)

    None

    2012-06-14T23:59:59.000Z

    The Recovery Act funded project in the H area basin. A concrete ditch built longer than half a mile to prevent contaminated water from expanding and to reduce the footprint on the environment.

  15. Air leakage of Insulated Concrete Form houses

    E-Print Network [OSTI]

    Durschlag, Hannah (Hanna Rebekah)

    2012-01-01T23:59:59.000Z

    Air leakage has been shown to increase building energy use due to additional heating and cooling loads. Although many construction types have been examined for leakage, an exploration of a large number of Insulated Concrete ...

  16. Semantic Social Network Analysis, a concrete case

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Semantic Social Network Analysis, a concrete case Guillaume Erétéo, Orange Labs, guillaume permitting a high degree of interaction between participants, and social network analysis (SNA) seeks) shared by the members of these networks. These enriched representations of social networks, combined

  17. Shrinkage - cracking characteristics of structural lightweight concrete

    E-Print Network [OSTI]

    McKeen, Robert Gordon

    1969-01-01T23:59:59.000Z

    1969 ABSTRACT Shrinkage-Cracking Characteristics of Structural Lightweight Concrete (August 1969) B. S. C. E. , Texas AERY University Directed by: if. B. Ledbetter Tests were conducted to det. trains the effect of coarse. s -gre- gate type...'csults indicated that both unrestrained shrinkage and concret. c water loss relate to restrained shrinkage stress. Unrestrained shrinks e did not indicate. cracking ter. dency while we+ er loss provided an indi cati on of cr cking tendency. ACRRO!Jr. ROOD. i...

  18. Performance of Reinforced Concrete Column Lap Splices

    E-Print Network [OSTI]

    Alberson, Ryan M.

    2010-01-14T23:59:59.000Z

    PERFORMANCE OF REINFORCED CONCRETE COLUMN LAP SPLICES A Thesis by RYAN ALBERSON 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 August 2009 Major Subject: Civil Engineering PERFORMANCE OF REINFORCED CONCRETE COLUMN LAP SPLICES A Thesis by RYAN ALBERSON Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  19. Amendment 80 ChecklistAmendment 80 Checklist Applications and ReportsApplications and Reports

    E-Print Network [OSTI]

    Economic Data Reports All Amendment 80 QS holders must submit an EDR for the fishing year by June 1 each year after 2008. The first EDR is not due until June 1, 2009, and is based on fishing during the 2008 fishing

  20. EVALUATION OF AMENDMENTS FOR MENDING THE INSITU REDOX MANIPULATION (ISRM) BARRIER

    SciTech Connect (OSTI)

    PETERSEN, S.W.

    2006-02-07T23:59:59.000Z

    In May of 2004, the U.S. Department of Energy (DOE) Richland and Fluor Hanford requested technical assistance from DOE Headquarters EM-23 to provide a team of technical experts to evaluate likely chemical/biological amendments for mending the In Situ Redox Manipulation (ISRM) Barrier in the 100-D Area of the Hanford Site. This request was a follow-on to an earlier request for assistance regarding the cause of chromium (Cr) breakthrough and recommendations for mending the barrier (March 2004 workshop). This report provides written documentation of the team's findings and recommendations. In 1995, a plume of dissolved hexavalent chromium [Cr(VI)] was discovered along the Columbia River shoreline and in the 100-D Area. Between 1999 and 2003, a reactive barrier using the ISRM technology, was installed at a distance of 680 meters along the river to reduce the Cr(VI) in the groundwater. The ISRM technology creates a treatment zone within the aquifer by injection of sodium dithionite, a strong reducing agent that scavenges dissolved oxygen (DO) from the aquifer and reduces ferric iron [Fe(III)], related metals, and oxy-ions. Bench-scale and field-scale treatability tests were conducted to demonstrate proof-of principle and to estimate barrier longevity, calculated to be in excess of twenty years. However, several years after initial and secondary treatment, groundwater in approximately 17 wells has been found to contain elevated Cr concentrations. The March 2004 technical assistance team (TAT) identified potential causes of Cr breakthrough as likely related to physical and chemical heterogeneity within the aquifer (including loss of reductive capacity within preferential flow paths) and the presence of other oxidants (DO and nitrate) significantly affecting the reductive capacity of the treated aquifer. These aquifer characteristics may limit the ability of alternative amendments to extend the reducing capacity of the barrier. A 2001 Bechtel Hanford report and evaluation of the ISRM performance data and barrier longevity assessment corroborate the observations and findings of the March 2004 TAT. The March 2004 TAT recommended the collection of new aquifer characterization data in combination with the interpretation of existing data to develop a conceptual model of aquifer heterogeneity to enable design of the most appropriate barrier mending system. The current TAT was convened to examine the most promising amendment that could be applied to mend the ISRM barrier. The Technical Assistance Team (TAT) performed the following activities: (1) Evaluate the most appropriate single or combination of chemical/biological amendments suitable for increasing the reductive capacity of the ISRM barrier; (2) Evaluate the most practicable means of introducing chemical/biological amendments in the target zones along the current BRM barrier; (3) Provide recommendations for laboratory treatability-testing protocol development to evaluate the type and delivery mechanisms of amendments in the current ISRM barrier location. Sections of this report present analyses and recommendations of potential amendments and delivery options to improve performance of the ISRM barrier. The report covers the spectrum of passive barrier mending to chemical and biological amendments that have been shown to perform more efficiently in more active remedial design approaches. Because DOE/RL is considering significant aquifer characterization studies as additional time and cost investment to mending the barrier, the TAT strongly recommends that DOE/RL conduct cost-benefit analyses of alternative designs to mend the barrier. In this way, the value and extent of characterization studies, compared to passive amendment delivery, compared to engineering redesign, can be quantitatively estimated for decision-making purposes.

  1. Experimental damage-gas flow correlations for cyclically loaded reinforced concrete walls

    E-Print Network [OSTI]

    Soppe, Travis E.

    2009-01-01T23:59:59.000Z

    of work focused on testing reinforced concrete panels underof work focused on testing reinforced concrete panels underfocuses on testing nine reinforced concrete wall panels

  2. Seismic Performance, Modeling, and Failure Assessment of Reinforced Concrete Shear Wall Buildings

    E-Print Network [OSTI]

    Tuna, Zeynep

    2012-01-01T23:59:59.000Z

    J.W. , (2009). Testing and Reinforced Concrete Coupling2010). "Testing and Modeling of Reinforced Concrete Couplingscale testing of four-story reinforced concrete and post-

  3. Instantaneous In-Situ Determination of Water-Cement Ratio of Fresh Concrete

    E-Print Network [OSTI]

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

    2010-01-01T23:59:59.000Z

    microstructure of concrete, and testing methods. Steven D.resistivity; fresh concrete; nondestructive testing; qualityin concrete structures, and nondestructive testing methods.

  4. Characterization of Effective Built-in Curling and Concrete Pavement Cracking on the Palmdale Test Sections

    E-Print Network [OSTI]

    Rao, Shreenath; Roesler, Jeffery R.

    2005-01-01T23:59:59.000Z

    of Concrete and Implications for Choice of Testing Standard.J. R. Non-Destructive Testing of Concrete Pavements forAsphalt Concrete Accelerated Pavement Testing American

  5. Experimental simulations of explosive loading on structural components : reinforced concrete columns with advanced composite jackets

    E-Print Network [OSTI]

    Rodríguez-Nikl, Tonatiuh

    2006-01-01T23:59:59.000Z

    5]. 3.A.4 Material Testing Concrete Concrete cylinders wereConcrete Institute ANFO Ammonium Nitrate and Fuel Oil ASTM ASTM International (American Society for Testing

  6. Improving the design and performance of concrete bridges in seismic regions

    E-Print Network [OSTI]

    Tobolski, Matthew Joseph

    2010-01-01T23:59:59.000Z

    compression testing for both concrete and grout are listedcompression testing for both concrete and grout are listedcompression testing for both concrete and grout are listed

  7. Hybrid Simulation of the Seismic Response of Squat Reinforced Concrete Shear Walls

    E-Print Network [OSTI]

    Whyte, Catherine Alexandra

    2012-01-01T23:59:59.000Z

    ACI Symposium on Reinforced Concrete Structures in SeismicStudies of Reinforced Concrete Walled Bents under Static2009. Update to ASCE/SEI 41 Concrete Provisions, PEER Report

  8. Energy Efficiency Improvement and Cost Saving Oportunities for the Concrete Industry

    E-Print Network [OSTI]

    Kermeli, Katerina

    2013-01-01T23:59:59.000Z

    Armor. 2010. Sustainable Concrete Plant Guidelines, Pilot-B. Ivery, J. Flaherty. 2004. Concrete Batch Plant Operator.National Ready Mixed Concrete Association Fleet Benchmarking

  9. Reliability-based characterization of prefabricated FRP composites for rehabilitation of concrete structures

    E-Print Network [OSTI]

    Jin, Sung-Jun

    2008-01-01T23:59:59.000Z

    FRP Strengthening of Reinforced Concrete Structures, Ph.D.for Prestressed Concrete Bridge Girders Strengthened withof Reinforced Normal Weight Concrete Members, Structural

  10. Experimental damage-gas flow correlations for cyclically loaded reinforced concrete walls

    E-Print Network [OSTI]

    Soppe, Travis E.

    2009-01-01T23:59:59.000Z

    vessels. ” Cement and Concrete research, 32, XTRACT (2007).of air permeability in a concrete shear wall subjected tocharacteristics in cracked concrete. ” Nuclear Engineering

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

    E-Print Network [OSTI]

    Hasanbeigi, Ali

    2013-01-01T23:59:59.000Z

    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

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

    E-Print Network [OSTI]

    Stadel, Alexander

    2013-01-01T23:59:59.000Z

    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

  13. A novel technique for the production of cool colored concrete tile and asphalt shingle roofing products

    E-Print Network [OSTI]

    Levinson, Ronnen

    2010-01-01T23:59:59.000Z

    for providing concrete tiles, and Lou Hahn of GAF-Elk forof cool colored concrete tile and asphalt shingle roofingsolar-reflective nonwhite concrete tile and asphalt shingle

  14. Should Title 24 Ventilation Requirements Be Amended to

    E-Print Network [OSTI]

    Should Title 24 Ventilation Requirements Be Amended to include an Indoor Air Quality Procedure Ventilation Requirements Be Amended to include an Indoor Air Quality Procedure? William J. Fisk, Spencer M Berkeley, CA 94720 May 10, 2013 ABSTRACT Minimum outdoor air ventilation rates (VRs) for buildings

  15. REGULATION I: Responsibility for Creation and Amendment of Regulations

    E-Print Network [OSTI]

    REGULATION I: Responsibility for Creation and Amendment of Regulations 1. In accordance with Article 14 of the Charter, the Council shall have the power to make, amend or repeal Regulations. 2 of the Regulations and the delegation of such power pursuant to Regulation II (7.2) by the Council to Senate

  16. NOTICE OF PROPOSED REGULATION AMENDMENT Date: November 8, 2011

    E-Print Network [OSTI]

    Richardson, Martin C.

    PROPOSED REGULATION AMENDMENT: Dr. James Fenton, Director, Florida Solar Energy Center COMMENTS CONCERNING.: Solar Thermal and Photovoltaic System Standards UCF-8.010 and Certification SUMMARY OF REGULATION-mail: regulations@mail.ucf.edu FULL TEXT OF THE PROPOSED REGULATION AMENDMENT: UCF-8.010 Solar Thermal

  17. NOTICE OF PROPOSED REGULATION AMENDMENT Date: November 8, 2011

    E-Print Network [OSTI]

    Richardson, Martin C.

    .: Florida Solar Energy Center Operations UCF-8.006 SUMMARY OF REGULATION: This regulation is an updated-mail: regulations@mail.ucf.edu FULL TEXT OF THE PROPOSED REGULATION AMENDMENT: UCF-8.006 Florida Solar Energy Center AMENDMENT: Dr. James Fenton, Director, Florida Solar Energy Center COMMENTS CONCERNING THE PROPOSED

  18. NOTICE OF PROPOSED REGULATION AMENDMENT Date: November 8, 2011

    E-Print Network [OSTI]

    Richardson, Martin C.

    REGULATION AMENDMENT: Dr. James Fenton, Director, Florida Solar Energy Center COMMENTS CONCERNING.: Solar Thermal Collector and PV Module Certification UCF-8.008 SUMMARY OF REGULATION: This regulation-mail: regulations@mail.ucf.edu FULL TEXT OF THE PROPOSED REGULATION AMENDMENT: UCF-8.008 Solar Thermal Collector

  19. Gypsum and Polyacrylamide Soil Amendments Used With High Sodium Wastewater

    E-Print Network [OSTI]

    Gardiner, Duane

    and sodium. Two soil amendments were applied to plots furrowirrigated with wastewater. The amendments were gypsum (11 Mg ha-1), and PAM added to irrigation water at rates of 25 mg L-1 PAM applications were made during every irrigation and during every second...

  20. DE-SOL-0003641 Amendment 003

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration would likeConstitution4Customer-Comments7Bench-ScaleTBDSOL-0003641 Amendment

  1. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved: 5-13-14Russianvolunteer | National011-03-2010 1 PAGE 1 D-24AME:NDMENT1

  2. Flow conditions of fresh mortar and concrete in different pipes

    SciTech Connect (OSTI)

    Jacobsen, Stefan, E-mail: stefan.jacobsen@ntnu.n [Norwegian University of Science and Technology, Dept of Structural Engineering, Trondheim (Norway); Haugan, Lars; Hammer, Tor Arne [SINTEF Byggforsk AS Building and Infrastructure, Trondheim (Norway); Kalogiannidis, Evangelos [Norwegian University of Science and Technology, Dept of Structural Engineering, Trondheim (Norway)

    2009-11-15T23:59:59.000Z

    The variation in fresh concrete flow rate over the pipe cross section was investigated on differently coloured and highly flowable concrete mixes flowing through pipes of different materials (rubber, steel, acryl). First, uncoloured (gray) concrete was poured through the pipe and the pipe blocked. Similar but coloured (black) concrete was then poured into the pipe filled with gray concrete, flowing after the gray concrete for a while before being blocked and hardened. The advance of the colouring along the pipe wall (showing boundary flow rate) was observed on the moulded concrete surface appearing after removing the pipe from the hardened concrete. The shapes of the interfaces between uncoloured and coloured concrete (showing variation of flow rate over the pipe cross section) were observed on sawn surfaces of concrete half cylinders cut along the length axes of the concrete-filled pipe. Flow profiles over the pipe cross section were clearly seen with maximum flow rates near the centre of the pipe and low flow rate at the pipe wall (typically rubber pipe with reference concrete without silica fume and/or stabilizers). More plug-shaped profiles, with long slip layers and less variation of flow rate over the cross section, were also seen (typically in smooth acrylic pipes). Flow rate, amount of concrete sticking to the wall after flow and SEM-images of pipe surface roughness were observed, illustrating the problem of testing full scale pumping.

  3. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

    E-Print Network [OSTI]

    . is not extended. Offers must acknowledge receipt of this amendment prior to the hour and date specified copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT

  4. The implications of compartment fire non-uniformity for the membrane action of reinforced concrete slabs 

    E-Print Network [OSTI]

    Deeny, Susan

    2011-01-01T23:59:59.000Z

    to the complexity of concrete material behaviour and also due to concrete’s reputation of superior fire performance. Concrete technology is, however, continually evolving; structures are increasingly slender, more highly stressed and have higher compressive...

  5. Structural Performance of a Full-Depth Precast Concrete Bridge Deck System

    E-Print Network [OSTI]

    Mander, Thomas

    2010-10-12T23:59:59.000Z

    -depth concrete bridge deck overhangs, accelerating the construction of concrete bridge decks, by using full-depth precast prestressed concrete deck panels. Full-depth precast overhang panels in combination with cast-in-place (CIP) reinforced concrete...

  6. Nuclear Concrete Materials Database Phase I Development

    SciTech Connect (OSTI)

    Ren, Weiju [ORNL; Naus, Dan J [ORNL

    2012-05-01T23:59:59.000Z

    The FY 2011 accomplishments in Phase I development of the Nuclear Concrete Materials Database to support the Light Water Reactor Sustainability Program are summarized. The database has been developed using the ORNL materials database infrastructure established for the Gen IV Materials Handbook to achieve cost reduction and development efficiency. In this Phase I development, the database has been successfully designed and constructed to manage documents in the Portable Document Format generated from the Structural Materials Handbook that contains nuclear concrete materials data and related information. The completion of the Phase I database has established a solid foundation for Phase II development, in which a digital database will be designed and constructed to manage nuclear concrete materials data in various digitized formats to facilitate electronic and mathematical processing for analysis, modeling, and design applications.

  7. TRANSPORT THROUGH CRACKED CONCRETE: LITERATURE REVIEW

    SciTech Connect (OSTI)

    Langton, C.

    2012-05-11T23:59:59.000Z

    Concrete containment structures and cement-based fills and waste forms are used at the Savannah River Site to enhance the performance of shallow land disposal systems designed for containment of low-level radioactive waste. Understanding and measuring transport through cracked concrete is important for describing the initial condition of radioactive waste containment structures at the Savannah River Site (SRS) and for predicting performance of these structures over time. This report transmits the results of a literature review on transport through cracked concrete which was performed by Professor Jason Weiss, Purdue University per SRR0000678 (RFP-RQ00001029-WY). This review complements the NRC-sponsored literature review and assessment of factors relevant to performance of grouted systems for radioactive waste disposal. This review was performed by The Center for Nuclear Waste Regulatory Analyses, San Antonio, TX, and The University of Aberdeen, Aberdeen Scotland and was focused on tank closure. The objective of the literature review on transport through cracked concrete was to identify information in the open literature which can be applied to SRS transport models for cementitious containment structures, fills, and waste forms. In addition, the literature review was intended to: (1) Provide a framework for describing and classifying cracks in containment structures and cementitious materials used in radioactive waste disposal, (2) Document the state of knowledge and research related to transport through cracks in concrete for various exposure conditions, (3) Provide information or methodology for answering several specific questions related to cracking and transport in concrete, and (4) Provide information that can be used to design experiments on transport through cracked samples and actual structures.

  8. Concrete material characterization reinforced concrete tank structure Multi-Function Waste Tank Facility

    SciTech Connect (OSTI)

    Winkel, B.V.

    1995-03-03T23:59:59.000Z

    The purpose of this report is to document the Multi-Function Waste Tank Facility (MWTF) Project position on the concrete mechanical properties needed to perform design/analysis calculations for the MWTF secondary concrete structure. This report provides a position on MWTF concrete properties for the Title 1 and Title 2 calculations. The scope of the report is limited to mechanical properties and does not include the thermophysical properties of concrete needed to perform heat transfer calculations. In the 1970`s, a comprehensive series of tests were performed at Construction Technology Laboratories (CTL) on two different Hanford concrete mix designs. Statistical correlations of the CTL data were later generated by Pacific Northwest Laboratories (PNL). These test results and property correlations have been utilized in various design/analysis efforts of Hanford waste tanks. However, due to changes in the concrete design mix and the lower range of MWTF operating temperatures, plus uncertainties in the CTL data and PNL correlations, it was prudent to evaluate the CTL data base and PNL correlations, relative to the MWTF application, and develop a defendable position. The CTL test program for Hanford concrete involved two different mix designs: a 3 kip/in{sup 2} mix and a 4.5 kip/in{sup 2} mix. The proposed 28-day design strength for the MWTF tanks is 5 kip/in{sup 2}. In addition to this design strength difference, there are also differences between the CTL and MWTF mix design details. Also of interest, are the appropriate application of the MWTF concrete properties in performing calculations demonstrating ACI Code compliance. Mix design details and ACI Code issues are addressed in Sections 3.0 and 5.0, respectively. The CTL test program and PNL data correlations focused on a temperature range of 250 to 450 F. The temperature range of interest for the MWTF tank concrete application is 70 to 200 F.

  9. Detection Of Concrete Deterioration By Staining

    DOE Patents [OSTI]

    Guthrie, Jr., George D. (Santa Fe, NM); Carey, J. William (Santa Fe, NM)

    1999-09-21T23:59:59.000Z

    A method using concentrated aqueous solutions of sodium cobaltinitrite and a rhodamine dye is described which can be used to identify concrete that contains gels formed by the alkali-silica reaction (ASR), and to identify degraded concrete which results in a porous or semi-permeable paste due to carbonation or leaching. These solutions present little health or environmental risk, are readily applied, and rapidly discriminate between two chemically distinct gels; K-rich, Na--K--Ca--Si gels are identified by yellow staining, and alkali-poor, Ca--Si gels are identified by pink staining.

  10. Evaluation of a microplane model for progressive fracture in concrete

    E-Print Network [OSTI]

    Loper, James Harris

    1988-01-01T23:59:59.000Z

    ). These test results laid the foundation for researchers to attack the problem of modeling concrete subjected to multiaxial stresses. Today, many computer codes exist which can model aspects of the behavior of concrete (Colville and Abbasi 1974; Bazant...

  11. FRP-to-concrete bond behaviour under high strain rates 

    E-Print Network [OSTI]

    Li, Xiaoqin

    2012-06-25T23:59:59.000Z

    Fibre reinforced polymer (FRP) composites have been used for strengthening concrete structures since early 1990s. More recently, FRP has been used for retrofitting concrete structures for high energy events such as impact ...

  12. Maintenance-based design of concrete parking structures

    E-Print Network [OSTI]

    Stoakes, Christopher D. (Christopher David)

    2007-01-01T23:59:59.000Z

    The purpose of this study is to determine what type of preventative maintenance for a concrete parking structure will produce the maximum economic benefit. Existing models for concrete deterioration are analyzed for their ...

  13. Identification of Concrete Incompatibilities Using Cement Paste Rheology 

    E-Print Network [OSTI]

    Jang, Se Hoon

    2010-07-14T23:59:59.000Z

    measurements instead of traditional workability tests (i.e., slump cone test) can have great potential in detecting those incompatibilities in concrete before the concrete is placed, which can, in turn, avoid related workability problems and setting time...

  14. Material flow analysis of concrete in the United States

    E-Print Network [OSTI]

    Low, Man-Shi

    2005-01-01T23:59:59.000Z

    Concrete is the second most consumed material in the world after water. Due to the sheer mass of concrete consumed annually and its associated resource and environmental impacts, improving the materials management of ...

  15. Automated crack control analysis for concrete pavement construction

    E-Print Network [OSTI]

    Jang, Se Hoon

    2005-11-01T23:59:59.000Z

    The focus of this research is on the control of random cracking in concrete paving by using sawcut notch locations in the early stages of construction. This is a major concern in concrete pavement construction. This research also addresses a...

  16. Lightweight concrete : investigations into the production of natural fiber reinforcement

    E-Print Network [OSTI]

    Garbis, Leonidia Maria

    2013-01-01T23:59:59.000Z

    The purpose of this study is to investigate the benefits of adding natural fiber tensile reinforcement to aerated concrete. Concrete is a great composite material which can be created in various proportions and with various ...

  17. Set in stone? A perspective on the concrete sustainability challenge

    E-Print Network [OSTI]

    Vliet, Krystyn Van J.

    As the most abundant engineered material on Earth, concrete is essential to the physical infrastructure of all modern societies. There are no known materials that can replace concrete in terms of cost and availability. ...

  18. Controlling Thermal Properties of Asphalt Concrete and its Multifunctional Applications 

    E-Print Network [OSTI]

    Shi, Xijun

    2014-08-10T23:59:59.000Z

    ) by controlling thermal properties of the construction materials. To change thermal properties of asphalt concrete, expanded polypropylene (EPP) pellet and graphite were selected as the additives and mixed into asphalt concrete. Experimental tests are classified...

  19. Effect of Materials and Curing Period on Shrinkage of Concrete

    E-Print Network [OSTI]

    West, Maria B.

    2010-02-04T23:59:59.000Z

    shrinkage reducing admixture at a dosage rate of 2 percent by weight of cement reduced the shrinkage of concrete nearly 32 percent after 365 days. The shrinkage reducing admixture, however, produced concrete that at times exhibited an unstable air content....

  20. Illinois: Ozinga Concrete Runs on Natural Gas and Opens Private...

    Energy Savers [EERE]

    Illinois: Ozinga Concrete Runs on Natural Gas and Opens Private Station Illinois: Ozinga Concrete Runs on Natural Gas and Opens Private Station November 6, 2013 - 12:00am Addthis...

  1. Hybrid Simulation of the Seismic Response of Squat Reinforced Concrete Shear Walls

    E-Print Network [OSTI]

    Whyte, Catherine Alexandra

    2012-01-01T23:59:59.000Z

    quasi-static reinforced concrete testing protocol from ITGOn the days of testing, three concrete cylinders from the

  2. axisymmetric concrete structure: Topics by E-print Network

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

    Structural Walls University of California eScholarship Repository Summary: Nonlinear Analysis of Presetressed Concrete Structures Under Monotonic and Cyclic...

  3. Thermal Removal Of Tritium From Concrete And Soil To Reduce Groundwater Impacts

    SciTech Connect (OSTI)

    Jackson, Dennis G.; Blount, Gerald C.; Wells, Leslie H.; Cardoso-Neto, Joao E.; Kmetz, Thomas F.; Reed, Misty L.

    2012-12-04T23:59:59.000Z

    Legacy heavy-water moderator operations at the Savannah River Site (SRS) have resulted in the contamination of equipment pads, building slabs, and surrounding soil with tritium. At the time of discovery the tritium had impacted the shallow (< 3-m) groundwater at the facility. While tritium was present in the groundwater, characterization efforts determined that a significant source remained in a concrete slab at the surface and within the associated vadose zone soils. To prevent continued long-term impacts to the shallow groundwater a CERCLA non-time critical removal action for these source materials was conducted to reduce the leaching of tritium from the vadose zone soils and concrete slabs. In order to minimize transportation and disposal costs, an on-site thermal treatment process was designed, tested, and implemented. The on-site treatment consisted of thermal detritiation of the concrete rubble and soil. During this process concrete rubble was heated to a temperature of 815 deg C (1,500 deg F) resulting in the dehydration and removal of water bound tritium. During heating, tritium contaminated soil was used to provide thermal insulation during which it's temperature exceeded 100 deg C (212 deg F), causing drying and removal of tritium. The thermal treatment process volatiles the water bound tritium and releases it to the atmosphere. The released tritium was considered insignificant based upon Clean Air Act Compliance Package (CAP88) analysis and did not exceed exposure thresholds. A treatability study evaluated the effectiveness of this thermal configuration and viability as a decontamination method for tritium in concrete and soil materials. Post treatment sampling confirmed the effectiveness at reducing tritium to acceptable waste site specific levels. With American Recovery and Reinvestment Act (ARRA) funding three additional treatment cells were assembled utilizing commercial heating equipment and common construction materials. This provided a total of four units to batch treat concrete rubble and soil. Post treatment sampling verified that the activity in the treated soil and concrete met the treatment standards for each medium which allowed the treated concrete rubble and soil to be disposed of on site as backfill. During testing and operations a total of 1,261-m{sup 3} (1,650-yd{sup 3}) of contaminated concrete and soils were treated with an actual incurred cost of $3,980,000. This represents a unit treatment cost of $3,156/m{sup 3} ($2,412/yd{sup 3}). In 2011 the project was recognized with an e-Star Sustainability Award by DOE's Office of Environmental Management.

  4. Thermal Removal of Tritium from Concrete and Soil to Reduce Groundwater Impacts - 13197

    SciTech Connect (OSTI)

    Jackson, Dennis G. [Savannah River National Laboratory, Building 773-42A, Aiken, South Carolina 29808 (United States)] [Savannah River National Laboratory, Building 773-42A, Aiken, South Carolina 29808 (United States); Blount, Gerald C. [Savannah River Nuclear Solutions (United States)] [Savannah River Nuclear Solutions (United States); Wells, Leslie H.; Cardoso, Joao E.; Kmetz, Thomas F.; Reed, Misty L. [U.S Department of Energy-Savannah River Site (United States)] [U.S Department of Energy-Savannah River Site (United States)

    2013-07-01T23:59:59.000Z

    Legacy heavy-water moderator operations at the Savannah River Site (SRS) have resulted in the contamination of equipment pads, building slabs, and surrounding soil with tritium. At the time of discovery the tritium had impacted the shallow (< 3-m) groundwater at the facility. While tritium was present in the groundwater, characterization efforts determined that a significant source remained in a concrete slab at the surface and within the associated vadose zone soils. To prevent continued long-term impacts to the shallow groundwater a CERCLA non-time critical removal action for these source materials was conducted to reduce the leaching of tritium from the vadose zone soils and concrete slabs. In order to minimize transportation and disposal costs, an on-site thermal treatment process was designed, tested, and implemented. The on-site treatment consisted of thermal detritiation of the concrete rubble and soil. During this process concrete rubble was heated to a temperature of 815 deg. C (1,500 deg. F) resulting in the dehydration and removal of water bound tritium. During heating, tritium contaminated soil was used to provide thermal insulation during which it's temperature exceeded 100 deg. C (212 deg. F), causing drying and removal of tritium. The thermal treatment process volatiles the water bound tritium and releases it to the atmosphere. The released tritium was considered insignificant based upon Clean Air Act Compliance Package (CAP88) analysis and did not exceed exposure thresholds. A treatability study evaluated the effectiveness of this thermal configuration and viability as a decontamination method for tritium in concrete and soil materials. Post treatment sampling confirmed the effectiveness at reducing tritium to acceptable waste site specific levels. With American Recovery and Reinvestment Act (ARRA) funding three additional treatment cells were assembled utilizing commercial heating equipment and common construction materials. This provided a total of four units to batch treat concrete rubble and soil. Post treatment sampling verified that the activity in the treated soil and concrete met the treatment standards for each medium which allowed the treated concrete rubble and soil to be disposed of on-site as backfill. During testing and operations a total of 1,261-m{sup 3} (1,650-yd{sup 3}) of contaminated concrete and soils were treated with an actual incurred cost of $3,980,000. This represents a unit treatment cost of $3,156/m{sup 3} ($2,412/yd{sup 3}). In 2011 the project was recognized with an e-Star Sustainability Award by DOE's Office of Environmental Management. (authors)

  5. Glass Concrete Thin Sheets Reinforced with Prestressed Aramid Fabrics

    E-Print Network [OSTI]

    Meyer, Christian

    Glass Concrete Thin Sheets Reinforced with Prestressed Aramid Fabrics Gregor Vilkner Submitted Glass Concrete Thin Sheets Reinforced with Prestressed Aramid Fabrics Gregor Vilkner Thin sheet concrete crushed glass as aggregate, a multitude of different esthetic effects can be produced, which again open up

  6. BOND PROPERTIES OF CFCC PRESTRESSING STRANDS IN PRETENSIONED CONCRETE BEAMS

    E-Print Network [OSTI]

    BOND PROPERTIES OF CFCC PRESTRESSING STRANDS IN PRETENSIONED CONCRETE BEAMS by Nolan G. Domenico plastic prestressing strands (CFCC) in pretensioned concrete beams. The bond characteristics are examined for 15.2 mm diameter and 12.5 mm diameter seven-wire CFCC strands. Ten prestressed concrete beams

  7. NExpTime-complete Description Logics with Concrete Domains

    E-Print Network [OSTI]

    Baader, Franz

    that reasoning with the concrete do- main D (i.e., testing the satis#12;ability of #12;nite conjunctionsChapter 1 NExpTime-complete Description Logics with Concrete Domains Carsten Lutz Abstract. Description Logics (DLs) incorporating concrete domains are useful formalisms for integrated reasoning about

  8. TTUS FP&C Design & Building Standards Division 3 Concrete

    E-Print Network [OSTI]

    Gelfond, Michael

    All concrete products shall be designed, formed, transported, placed, tested, and finished in strict accordance with the American Society for Testing and Materials (ASTM) and the American Concrete Institute, and submit test reports during concrete placement. Page 1 of 4 #12;TTUS FP&C Design & Building

  9. TRNEWS279MARCHAPRIL2012 The authors are Concrete

    E-Print Network [OSTI]

    Harms, Kyle E.

    . Most prefer the Standard Test Method for Electrical Indication of Concrete's Ability to Resist Chloride measurements across a wide range of permeability values, sample testing ages, and concrete mix designs (FigureTRNEWS279MARCH­APRIL2012 46 The authors are Concrete Research Engineers, Louisiana Transportation

  10. SERVICEABILITY LIMIT STATES OF CONCRETE BEAMS PRESTRESSED BY CFRP BARS

    E-Print Network [OSTI]

    reinforcements. The experimental program consisted of testing eight concrete beams prestressed by CFRP bars beams prestressed by Leadline CFRP bars were tested, in addition to two concrete beams prestressedAbstract SERVICEABILITY LIMIT STATES OF CONCRETE BEAMS PRESTRESSED BY CFRP BARS by Amr A

  11. Experimental and Analytical Reexamination of Classic Concrete Beam Tests

    E-Print Network [OSTI]

    Vecchio, Frank J.

    Experimental and Analytical Reexamination of Classic Concrete Beam Tests F. J. Vecchio1 and W. Shim CE Database subject headings: Beams; Concrete; Tests; Ductility; Finite elements; Models; Shear paper describing the testing of a series of 12 reinforced concrete beams Bresler and Scordelis 1963

  12. Disk-shaped Compact Tension Test for Asphalt Concrete Fracture

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Disk-shaped Compact Tension Test for Asphalt Concrete Fracture by M.P.Wagoner, W.G. Buttlar and G geometry is the ability to test cylindrical cores obtained from in-place asphalt concrete pavements finalizing the specimen geometry, a typical asphalt concrete surface mixture was tested at various

  13. Silica dust control when drilling concrete Page 1 of 2

    E-Print Network [OSTI]

    Knowles, David William

    Silica dust control when drilling concrete Page 1 of 2 Drilling into concrete releases a fine sandy and routinely drill into concrete are at risk of developing this disease. Controlling the dust Hammer drills are available with attached dust removal systems. These draw dust from the drill end, down the attachment

  14. Guide Specification for Highway Construction Texturing Concrete Pavement for

    E-Print Network [OSTI]

    Guide Specification for Highway Construction Texturing Concrete Pavement for Reduced Tire/Pavement Noise using Diamond Grinding Designation: CPSCP GS 1-11 (rev 3/1/2011) National Concrete Pavement for Highway Construction Texturing Concrete Pavement for Reduced Tire/Pavement Noise using Diamond Grinding

  15. The Description Logic ALCN HR+ Extended with Concrete Domains

    E-Print Network [OSTI]

    Moeller, Ralf

    The Description Logic ALCN HR+ Extended with Concrete Domains: A Practically Motivated Approach, role hierarchies, transitively closed roles, generalized concept inclusions, and concrete domains. As in other languages based on concrete domains (e.g. ALC(D)) a so-called ex- istential predicate restriction

  16. Building Cathedrals and Breaking down Reinforced Concrete Walls

    E-Print Network [OSTI]

    Broué, Michel - Institut de Mathématiques de Jussieu, Université Paris 7

    Building Cathedrals and Breaking down Reinforced Concrete Walls Michel Brou´e Institut Henri distinction between great mathematicians Concrete walls breakers Michel Brou´e (Institut Henri Poincar´e) John Concrete walls breakers Cathedrals builders Michel Brou´e (Institut Henri Poincar´e) John Thompson

  17. Adapting Optimization Techniques to Description Logics with Concrete Domains

    E-Print Network [OSTI]

    Haarslev, Volker

    Adapting Optimization Techniques to Description Logics with Concrete Domains Anni-Yasmin Turhan backtracking and model merging can be adapted to description logics with concrete domains. We propose al) a new requirement for concrete domains in order to enable dependency directed backtracking for all clash

  18. Guide to Dowel LoadTransfer Systems for Jointed Concrete

    E-Print Network [OSTI]

    Guide to Dowel LoadTransfer Systems for Jointed Concrete Roadway Pavements TECH BRIEF SEPTEMBER 2011 #12;#12;GUIDE TO DOWEL LOAD TRANSFER SYSTEMS FOR JOINTED CONCRETE ROADWAY PAVEMENTS i Technical and Subtitle Guide to Dowel Load Transfer Systems for Jointed Concrete Roadway Pavements 5. Report Date

  19. Effects of g Radiation on Fiber-Reinforced Polymer Concrete

    E-Print Network [OSTI]

    North Texas, University of

    Effects of g Radiation on Fiber-Reinforced Polymer Concrete Gonzalo Marti´nez-Barrera,1,2 Luis F% of nylon fibers. The fiber-containing polymer concretes (PCs) were subjected to 5, 10, 50, and 100 k Engineers INTRODUCTION AND SCOPE It is well known that polymer concrete (PC) is three to five times stronger

  20. Designing Precast Concrete Cross Wall Joints Against Progressive Collapse

    E-Print Network [OSTI]

    Birmingham, University of

    Designing Precast Concrete Cross Wall Joints Against Progressive Collapse Researcher: Mohamad concrete cross wall constructions. Ronan Point Collapse (http://en.wikipedia.org/wiki/Ronan_Point) #12;Due gap is listed as follows: · Limited number of studies for designing precast concrete cross wall

  1. Concrete Browsing Of A Graphical Toolkit Library Denys Duchier

    E-Print Network [OSTI]

    Duchier, Denys

    Concrete Browsing Of A Graphical Toolkit Library Denys Duchier Department of Computer Science and promote reuse. This paper introduces Concrete Browsing as an improved method of consult- ing a graphical library, and Spreading Computation as novel paradigm for search and retrieval. A concrete browser allows

  2. From Abstract to Concrete Norms in Agent Institutions

    E-Print Network [OSTI]

    Dignum, Frank

    From Abstract to Concrete Norms in Agent Institutions Davide Grossi and Frank Dignum Utrecht accounts for how (abstract) norms can be incorporated in the (concrete) procedures constituting. This abstract is organized as follows. In Section 2 we make the problem we are focusing on concrete by means

  3. CONCRETE OPTIMISATION WITH REGARD TO PACKING DENSITY AND RHEOLOGY

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    CONCRETE OPTIMISATION WITH REGARD TO PACKING DENSITY AND RHEOLOGY François de Larrard LCPC Centre/organizers): .............. Keywords: packing density, rheology, grading curve, optimisation, self-compacting concrete, roller-compacted concrete. Author contacts Authors E-Mail Fax Postal address LCPC Centre de Nantes François de Larrard

  4. Concrete Browsing Of A Graphical Toolkit Library Denys Duchier

    E-Print Network [OSTI]

    Duchier, Denys

    Concrete Browsing Of A Graphical Toolkit Library Denys Duchier Department of Computer Science and promote reuse. This paper introduces Concrete Browsing as an improved method of consult­ ing a graphical library, and Spreading Computation as novel paradigm for search and retrieval. A concrete browser allows

  5. CIVE 452 Spring 1998 Design of Reinforced Concrete Structures

    E-Print Network [OSTI]

    Eberhard, Marc O.

    CIVE 452 Spring 1998 Design of Reinforced Concrete Structures Instructor: M.O. Eberhard Office: 233 of concrete and steel (CIVE 363). The purpose of the course is to provide seniors with an introduction to the behavior and design of reinforced concrete structures. Course Outline Text Reading 1. Introduction Ch. 1, 2

  6. Compressive Strength of Gamma-Irradiated Polymer Concrete

    E-Print Network [OSTI]

    North Texas, University of

    Compressive Strength of Gamma-Irradiated Polymer Concrete Gonzalo Marti´nez-Barrera,1,2 Uriel concrete (PC) was developed by using differ- ent concentrations of silica sand as aggregate of Plastics Engineers INTRODUCTION Polymer concrete (PC) is a particulate composite where thermoset resins

  7. COLORADO DEPARTMENT OF TRANSPORTATION Sustainability of Concrete Pavement

    E-Print Network [OSTI]

    COLORADO DEPARTMENT OF TRANSPORTATION Sustainability of Concrete Pavement I-225 - Mississippi to 6 · 2 Mile Reconstruction Existing: · 4 Lane Divided Highway · 8" Concrete Pavement (Recycled on-site) · 4" Asphalt Overlay (Recycled off-site) Project Design: · 6 Lane Divided Highway · 13" Concrete

  8. Model coupling friction and adhesion for steel-concrete interfaces

    E-Print Network [OSTI]

    Boyer, Edmond

    Model coupling friction and adhesion for steel- concrete interfaces Michel Raous Laboratoire de: In this paper the interface behaviour between steel and concrete, during pull out tests, is numerically a variable friction coefficient in order to simulate the behaviour of the steel-concrete interface during

  9. The Description Logic ALCNHR + Extended with Concrete Domains

    E-Print Network [OSTI]

    Haarslev, Volker

    The Description Logic ALCNHR + Extended with Concrete Domains: A Practically Motivated Approach restrictions, role hierarchies, transitively closed roles, generalized concept inclusions, and concrete domains. As in other languages based on concrete domains (e.g. ALC(D)) a so­called ex­ istential predicate restriction

  10. Adapting Optimization Techniques to Description Logics with Concrete Domains

    E-Print Network [OSTI]

    Haarslev, Volker

    Adapting Optimization Techniques to Description Logics with Concrete Domains Anni­Yasmin Turhan backtracking and model merging can be adapted to description logics with concrete domains. We propose al) a new requirement for concrete domains in order to enable dependency directed backtracking for all clash

  11. NExpTime-complete Description Logics with Concrete Domains

    E-Print Network [OSTI]

    Baader, Franz

    NExpTime-complete Description Logics with Concrete Domains Carsten Lutz LuFG Theoretical Computer Science RWTH Aachen, Germany lutz@cs.rwth-aachen.de Abstract. Concrete domains are an extension \\concrete properties" of objects such as sizes, weights, and durations. It is known that reasoning with ALC

  12. Concrete vs. Abstract Problem Formats: A Disadvantage of Prior Knowledge

    E-Print Network [OSTI]

    Heckler, Andrew F.

    Concrete vs. Abstract Problem Formats: A Disadvantage of Prior Knowledge Andrew F. Heckler experiments examine the effects of varying the relative concreteness of physics word problems on student performance.Previous studies have found that concrete representations benefit performance for relatively

  13. Effects of elevated temperatures on mechanical properties of concrete containing

    E-Print Network [OSTI]

    North Texas, University of

    Effects of elevated temperatures on mechanical properties of concrete containing haematite and A. Beycioglu5 Concretes containing different proportions of haematite (15, 30, 45 and 60%) were of concretes were determined according to ASTM C39 and ASTM C469. A rule based Mamdani type fuzzy logic model

  14. A NOVEL MICROWAVE CAMERA FOR NDE OF CONCRETE STRUCTURES

    E-Print Network [OSTI]

    De Flaviis, Franco

    A NOVEL MICROWAVE CAMERA FOR NDE OF CONCRETE STRUCTURES By Maria Q. Feng1 , Yoo Jin Kim2 , Franco De Flaviis3 , and Luis Jofre 4 ABSTRACT: Nondestructive assessment of concrete structures heavily and cracks inside concrete caused by aging, deterioration, and seismic loading. The authors have developed

  15. The Transfer of Scientific Principles Using Concrete and Idealized

    E-Print Network [OSTI]

    Goldstone, Robert

    The Transfer of Scientific Principles Using Concrete and Idealized Simulations Robert L. Goldstone the first simulation was manipulated. The elements either remained concrete throughout the simulation, remained idealized, or switched midway into the simulation from concrete to idealized or vice versa

  16. Blast simulator wall tests : experimental methods and mitigation strategies for reinforced concrete and concrete Masonry

    E-Print Network [OSTI]

    Oesterle, Michael G.

    2009-01-01T23:59:59.000Z

    of three blocks with two mortar joints and both cells fully16 in. concrete blocks with two mortar joints (Figure 6.21).between the mortar joints and the block were equal to 200

  17. Concrete Property and Radionuclide Migration Tests

    SciTech Connect (OSTI)

    Wellman, Dawn M.; Mattigod, Shas V.; Powers, Laura; Parker, Kent E.; Clayton, Libby N.; Wood, Marcus I.

    2008-10-01T23:59:59.000Z

    The Waste Management Project provides safe, compliant, and cost-effective waste management services for the Hanford Site and the DOE Complex. Part of theses services includes safe disposal of LLW and MLLW at the Hanford Low-Level Waste Burial Grounds (LLBG) in accordance with the requirements listed in DOE Order 435.1, Radioactive Waste Management. To partially satisfy these requirements, a Performance Assessment (PA) analyses were completed and approved. DOE Order 435.1 also requires that continuing data collection be conducted to enhance confidence in the critical assumptions used in these analyses to characterize the operational features of the disposal facility that are relied upon to satisfy the performance objectives identified in the Order. One critical assumption is that concrete will frequently be used as waste form or container material to control and minimize the release of radionuclide constituents in waste into the surrounding environment. Data was collected to (1) quantify radionuclide migration through concrete materials similar to those used to encapsulate waste in the LLBG, (2) measure the properties of the concrete materials, especially those likely to influence radionuclide migration, and (3) quantify the stability of U-bearing solid phases of limited solubility in concrete.

  18. Lateral stability of long precast concrete beams

    E-Print Network [OSTI]

    Burgoyne, Chris

    buckling L length of beam vx lateral de¯ection measured in the minor- axis direction (which rotates with yLateral stability of long precast concrete beams T. J. Stratford, BA, BEng, and C. J. Burgoyne, BA, making them more susceptible to buckling failure. This paper shows that once the beam is positioned

  19. Morley Symposium on Concrete Plasticity and its Application. University of Cambridge 23 THE PLASTICITY OF UNREINFORCED CONCRETE

    E-Print Network [OSTI]

    Burgoyne, Chris

    Morley Symposium on Concrete Plasticity and its Application. University of Cambridge 23 rd July, 2007 THE PLASTICITY OF UNREINFORCED CONCRETE Jacques HEYMAN Department of Engineering, University of Cambridge, UK Keywords: Mass concrete, plasticity 1 THE MATERIAL If a material is to be structurally useful

  20. Comprehensive Environmental Response, Compensation, and Liability Act, as amended by the Superfund Amendments and Reauthorization Act Section 120(e)(5). Annual report to Congress for Fiscal year 1992

    SciTech Connect (OSTI)

    Not Available

    1993-08-01T23:59:59.000Z

    The US Department of Energy (DOE) is committed to conducting its operations in a safe and environmentally sound manner. High priorities for the Department are identifying and correcting environmental problems at DOE facilities that resulted from past operations, and preventing environmental problems from occurring during present and future operations. In this regard, the Department is committed to clean up the 1989 inventory of sites in the Environmental Restoration Program by the year 2019. DOE has issued an Order and guidance establishing policy and procedures for activities conducted under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended by the Superfund Amendments and Reauthorization Act (SARA), and has developed a Five-Year Plan, updated annually, that integrates planning for corrective activities, environmental restoration and waste management operations at its facilities. DOE also continues to conduct assessments (e.g., Management Audits, Environmental Safety and Health (ES & H) Progress Assessments, Internal Self Assessments) at its operating facilities to provide the Secretary of Energy with information on current environmental compliance status and follow-up on findings.

  1. SECTION 340 WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE SOUTHERN WEST VIRGINIA MODEL for the provision of environmental assistance to non-Federal interests in southern West Virginia pursuant to Section

  2. SECTION 340 WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE SOUTHERN WEST VIRGINIA MODEL of environmental assistance to non-Federal interests in southern West Virginia pursuant to Section 340 of the Water

  3. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR DESIGN ASSISTANCE-Federal interests in southern West Virginia pursuant to Section 340 of the Water Resources Development Act of 1992

  4. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR CONSTRUCTION West Virginia pursuant to Section 571 of the Water Resources Development Act of 1999, Public Law 106

  5. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR CONSTRUCTION West Virginia pursuant to Section 340 of the Water Resources Development Act of 1992, Public Law 102

  6. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR DESIGN ASSISTANCE for providing environmental assistance to non-Federal interests in southern West Virginia pursuant to Section

  7. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR DESIGN to be developed for providing environmental assistance to non-Federal interests in central West Virginia pursuant

  8. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR DESIGN-Federal interests in southern West Virginia pursuant to Section 340 of the Water Resources Development Act of 1992

  9. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR DESIGN ASSISTANCE assistance to non-Federal interests in central West Virginia pursuant to Section 571 of the Water Resources

  10. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR DESIGN-Federal interests in central West Virginia pursuant to Section 571 of the Water Resources Development Act of 1999

  11. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR CONSTRUCTION environmental assistance to non-Federal interests in central West Virginia pursuant to Section 571 of the Water

  12. SECTION 340 WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED SOUTHERN WEST VIRGINIA MODEL AGREEMENT FOR DESIGN to be developed for providing environmental assistance to non-Federal interests in southern West Virginia pursuant

  13. SECTION 571 WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 571 ­ WRDA 1999, AS AMENDED CENTRAL WEST VIRGINIA MODEL AGREEMENT FOR DESIGN ASSISTANCE to be developed for providing environmental assistance to non-Federal interests in central West Virginia pursuant

  14. BLM - Approved Resource Management Plan Amendments/Record of...

    Open Energy Info (EERE)

    Approved Resource Management Plan AmendmentsRecord of Decision for Solar Energy Development in Six Southwestern States Jump to: navigation, search OpenEI Reference LibraryAdd to...

  15. Microsoft Word- DE-FOA-0000013 Amendment 000003.doc

    Broader source: Energy.gov [DOE]

    This amendment extends the application due date for State Applicants from May 11, 2009 to June 25, 2009 for Recovery Act Energy Efficiency and Conservation Block Grants (EECBG) formula grants.

  16. Biochar amendment and greenhouse gas emissions from agricultural soils 

    E-Print Network [OSTI]

    Case, Sean Daniel Charles

    2013-11-28T23:59:59.000Z

    The aim of this study was to investigate the effects of biochar amendment on soil greenhouse gas (GHG) emissions and to elucidate the mechanisms behind these effects. I investigated the suppression of soil carbon dioxide ...

  17. FLORIDA ATLANTIC UNIVERSITY NOTICE OF PROPOSED REGULATION AMENDMENT

    E-Print Network [OSTI]

    Richman, Fred

    in 1981, and last revised in 1987. It requires updating to reflect the policies and procedures currently AMENDMENT IS: Myrlande Dessalines, Paralegal, Office of the General Counsel, 777 Glades Road, Boca Raton

  18. FLORIDA ATLANTIC UNIVERSITY NOTICE OF PROPOSED REGULATION AMENDMENT

    E-Print Network [OSTI]

    Richman, Fred

    .003 was originally drafted in 1979, and last revised in 1987. It sets forth some, but not all, employee files AMENDMENT IS: Myrlande Dessalines, Paralegal, Office of the General Counsel, 777 Glades Road, Boca Raton

  19. FLORIDA ATLANTIC UNIVERSITY NOTICE OF PROPOSED REGULATION AMENDMENTS

    E-Print Network [OSTI]

    Richman, Fred

    and distribution of financial aid to students. It was last amended November 11, 1987. This proposal updates: Myrlande Dessalines, Paralegal, Office of the General Counsel, 777 Glades Road, Boca Raton, Florida, 33431

  20. Microsoft Word - Alcoa_short-term_amendments_CX.docx

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

    the same level of service under an existing power sales contract to the Intalco smelter in Ferndale, WA. These amendments would further extend this service for up to an...

  1. amend existing operating: Topics by E-print Network

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

    6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Handbook of Operating Procedures (HOP) Amendment Approval Process -UTDPP1056 Biology and...

  2. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR DESIGN ASSISTANCE (WORK New Mexico pursuant to Section 593 of the Water Resources Development Act of 1999, Public Law 106

  3. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR DESIGN ASSISTANCE (WORK developed for providing environmental assistance to non-Federal interests in central New Mexico pursuant

  4. How the Second Amendment to China's Patent Law Affects Firms' Patenting Behavior In this study, we examine how the second amendment to China's patent law affects the

    E-Print Network [OSTI]

    Sekhon, Jasjeet S.

    How the Second Amendment to China's Patent Law Affects Firms' Patenting Behavior Abstract In this study, we examine how the second amendment to China's patent law affects the patenting behavior passed a second amendment to its patent system in 2000 in accordance with the Trade-Related Aspects

  5. Depth distribution of H-3, C-14 and Co-60 in decommissioning of the biological shielding concrete of KRR-2

    SciTech Connect (OSTI)

    Hong, S.B.; Kim, H.R.; Chung, R.H.; Chung, K.H.; Park, J.H. [Korea Atomic Energy Research Institute, Yuseong-gu, Daejeon (Korea, Republic of)

    2007-07-01T23:59:59.000Z

    The depth distributions of the gamma emitting nuclides, H-3 and C-14 activities were characterized for the activated biological shielding concrete from a decommissioning of Korea Research Reactor-2(TRIGA Mark-II) by using a commercially available tube furnace and a liquid scintillation counter. The HTO vapor and {sup 14}CO{sub 2} gas generated from the tube furnace were trapped in HNO{sub 3} and Carbosorb bubbler, respectively. The H-3 and C-14 activities were measured by the liquid scintillation counter. The specific activities of H-3 and C-14 were calculated by considering the concrete mass and the recovery factor of the tube furnace. The detection limits for H-3 and C-14 were 0.048 and 0.028 Bq/g respectively. The specific activity of the H-3 and C-14 tends to decrease exponentially as the depth of the concrete becomes deeper from the surface. In addition, the H-3 and C-14 activities were in good agreement with the Co-60 activities analyzed for the biological shielding concrete of KRR-2. (authors)

  6. Surface treated polypropylene (PP) fibres for reinforced concrete

    SciTech Connect (OSTI)

    López-Buendía, Angel M., E-mail: buendia@uv.es [AIDICO Technological Institute of Construction, Benjamin Franklin 17, 46380 Paterna, Valencia (Spain); Romero-Sánchez, María Dolores [AIDICO Technological Institute of Construction, Marble Technical Unit, Camí de Castella 4, 03660 Novelda. Alicante (Spain)] [AIDICO Technological Institute of Construction, Marble Technical Unit, Camí de Castella 4, 03660 Novelda. Alicante (Spain); Climent, Verónica [Lafarge Cementos, Polígono Sepes, Isaac Newton s/n, 46500 Sagunto, Valencia (Spain)] [Lafarge Cementos, Polígono Sepes, Isaac Newton s/n, 46500 Sagunto, Valencia (Spain); Guillem, Celia [AIDICO Technological Institute of Construction, Marble Technical Unit, Camí de Castella 4, 03660 Novelda. Alicante (Spain)] [AIDICO Technological Institute of Construction, Marble Technical Unit, Camí de Castella 4, 03660 Novelda. Alicante (Spain)

    2013-12-15T23:59:59.000Z

    Surface treatments on a polypropylene (PP) fibre have contributed to the improvement of fibre/concrete adhesion in fibre-reinforced concrete. The treatments to the PP fibre were characterized by contact angle measurements, ATR-IR and XPS to analyse chemical alterations. The surface topography and fibre/concrete interaction were analysed by several microscopic techniques, namely optical petrographic, and scanning electron microscopy. Treatment modified the surface chemistry and topography of the fibre by introducing sodium moieties and created additional fibre surface roughness. Modifications in the fibre surface led to an increase in the adhesion properties between the treated fibres and concrete and an improvement in the mechanical properties of the fibre-reinforced concrete composite as compared to the concrete containing untreated PP fibres. Compatibility with the concrete and increased roughness and mineral surface was also improved by nucleated portlandite and ettringite mineral association anchored on the alkaline PP fibre surface, which is induced during treatment.

  7. Recycling of PET bottles as fine aggregate in concrete

    SciTech Connect (OSTI)

    Frigione, Mariaenrica, E-mail: mariaenrica.frigione@unisalento.i [Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce (Italy)

    2010-06-15T23:59:59.000Z

    An attempt to substitute in concrete the 5% by weight of fine aggregate (natural sand) with an equal weight of PET aggregates manufactured from the waste un-washed PET bottles (WPET), is presented. The WPET particles possessed a granulometry similar to that of the substituted sand. Specimens with different cement content and water/cement ratio were manufactured. Rheological characterization on fresh concrete and mechanical tests at the ages of 28 and 365 days were performed on the WPET/concretes as well as on reference concretes containing only natural fine aggregate in order to investigate the influence of the substitution of WPET to the fine aggregate in concrete. It was found that the WPET concretes display similar workability characteristics, compressive strength and splitting tensile strength slightly lower that the reference concrete and a moderately higher ductility.

  8. An Alternative Mechanism for Accelerated Carbon Sequestration in Concrete

    SciTech Connect (OSTI)

    Haselbach, Liv M.; Thomle, Jonathan N.

    2014-07-01T23:59:59.000Z

    The increased rate of carbon dioxide sequestration (carbonation) is desired in many primary and secondary life applications of concrete in order to make the life cycle of concrete structures more carbon neutral. Most carbonation rate studies have focused on concrete exposed to air under various conditions. An alternative mechanism for accelerated carbon sequestration in concrete was investigated in this research based on the pH change of waters in contact with pervious concrete which have been submerged in carbonate laden waters. The results indicate that the concrete exposed to high levels of carbonate species in water may carbonate faster than when exposed to ambient air, and that the rate is higher with higher concentrations. Validation of increased carbon dioxide sequestration was also performed via thermogravimetric analysis (TGA). It is theorized that the proposed alternative mechanism reduces a limiting rate effect of carbon dioxide dissolution in water in the micro pores of the concrete.

  9. Light Water Reactor Safety Research Program. Semiannual report, October 1982-March 1983. [Molten fuel/concrete interaction; core melt-coolant interaction; hydrogen detonation (Grand Gulf igniter)

    SciTech Connect (OSTI)

    Berman, M.

    1984-05-01T23:59:59.000Z

    The Molten Fuel/Concrete Interactions (MFCI) Study investigates the mechanism of concrete erosion by molten core materials, the nature and rate of generation of evolved gases, and the effects on fission product release. The Core Melt/Coolant Interactions (CMCI) Study investigates the characteristics of explosive and nonexplosive interactions between molten core materials and concrete, and the probabilities and consequences of such interactions. In the Hydrogen Program, the HECTR code for modelling hydrogen deflagration is being developed, experiments (including those in the FITS facility) are being conducted, and the Grand Gulf Hydrogen Igniter System II is being reviewed. All activities are continuing.

  10. Wearability of Portland Cement Concrete Pavement Finishes

    E-Print Network [OSTI]

    McKeen, William Rew

    1971-01-01T23:59:59.000Z

    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...

  11. Radionuclide Retention in Concrete Waste Forms

    SciTech Connect (OSTI)

    Mattigod, Shas V.; Bovaird, Chase C.; Wellman, Dawn M.; Wood, Marcus I.

    2010-09-30T23:59:59.000Z

    Assessing long-term performance of Category 3 waste cement grouts for radionuclide encasement requires knowledge of the radionuclide-cement interactions and mechanisms of retention (i.e., sorption or precipitation); the mechanism of contaminant release; the significance of contaminant release pathways; how waste form performance is affected by the full range of environmental conditions within the disposal facility; the process of waste form aging under conditions that are representative of processes occurring in response to changing environmental conditions within the disposal facility; the effect of waste form aging on chemical, physical, and radiological properties; and the associated impact on contaminant release. This knowledge will enable accurate prediction of radionuclide fate when the waste forms come in contact with groundwater. The information presented in the report provides data that 1) quantify radionuclide retention within concrete waste form materials similar to those used to encapsulate waste in the Low-Level Waste Burial Grounds (LLBG); 2) measure the effect of concrete waste form properties likely to influence radionuclide migration; and 3) quantify the stability of uranium-bearing solid phases of limited solubility in concrete.

  12. Analytical and Experimental Assessment of Seismic Vulnerability of Beam-Column Joints without Transverse Reinforcement in Concrete Buildings

    E-Print Network [OSTI]

    Hassan, Wael M.

    2011-01-01T23:59:59.000Z

    Deformations in Reinforced Concrete Beam–Column Joints?,P. , ?Update to ASCE/SEI 41 Concrete Provisions?, EarthquakeEffective Stiffness of Reinforced Concrete Columns?, Pacific

  13. EA-1086: Amendments to 10 CFR Part 835 (Revised Version- 6/98)

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal to issue as a final rulemaking an amended version of 10 CFR Part 835, "Occupational Radiation Protection."  The amended version provides...

  14. The Return of Reasonableness: Saving the Fourth Amendment from the Supreme Court

    E-Print Network [OSTI]

    Wilson, Melanie D.

    2008-01-01T23:59:59.000Z

    The Supreme Court's Fourth Amendment jurisprudence has been oft criticized. The criticism is not surprising or undeserved. After all, the express language of the Fourth Amendment requires that the government act reasonably ...

  15. Amendment to LM-07-12 for Fiber Optic Cable Trenching at the...

    Energy Savers [EERE]

    Amendment to LM-07-12 for Fiber Optic Cable Trenching at the Westminster, Colorado, Office Amendment to LM-07-12 for Fiber Optic Cable Trenching at the Westminster, Colorado,...

  16. The Price of Pretrial Release: Can We Afford to Keep Our Fourth Amendment Rights?

    E-Print Network [OSTI]

    Wilson, Melanie D.

    2006-01-01T23:59:59.000Z

    This Article looks at the intersection of the Fourth Amendment, which protects Americans' personal security against arbitrary and oppressive searches by law enforcement officials, and the Eighth Amendment, which proscribes ...

  17. A Summary of Utilities' Positions Regarding the Clean Air Act Amendments of 1990

    E-Print Network [OSTI]

    Nalepa, K. J.

    This paper summarizes information from the electric utilities in Texas concerning their preliminary plans for compliance with the 1990 Amendments to the Clean Air Act. Enactment of the amendments resulted in a new two phase, market-based allowance...

  18. Amendment 80 Limited Access Fishery Permit Application Page 1 of 6

    E-Print Network [OSTI]

    and complete Amendment 80 Economic Data Report (EDR) for all Amendment 80 QS permits held by that person Ownership BLOCK F -- EDR SUBMISSION Indicate whether the applicant has submitted a timely and complete EDR

  19. Concrete decontamination by Electro-Hydraulic Scabbling (EHS). Topical report

    SciTech Connect (OSTI)

    NONE

    1996-03-30T23:59:59.000Z

    Electro-Hydraulic Scabbling (EHS) technology and equipment for decontaminating concrete structures from radionuclides, organic substances, and hazardous metals is being developed by Textron Systems Division (TSD). This wet scabbling technique involves the generation of powerful shock waves and intense cavitation by a strong pulsed electric discharge in a water layer at the concrete surface. The high pressure impulse results in stresses which crack and peel off a concrete layer of a controllable thickness. Scabbling produces contaminated debris of relatively small volume which can be easily removed, leaving clean bulk concrete. This new technology is being developed under Contract No. DE-AC21-93MC30164. The project objective is to develop and demonstrate a cost-efficient, rapid, controllable process to remove the surface layer of contaminated concrete while generating minimal secondary waste. The primary target of this program is uranium-contaminated concrete floors which constitute a substantial part of the contaminated area at DOE weapon facilities.

  20. University of North Carolina at Charlotte Design and Construction Manual Section 2, Division 03 Concrete

    E-Print Network [OSTI]

    Xie,Jiang (Linda)

    . American Concrete Institute (ACI) B. American Society for Testing and Materials (ASTM) C. Portland Cement ­ Concrete SECTION 2 DIVISION 03 CONCRETE #12;University of North Carolina at Charlotte Design and Construction Manual Section 2, Division 03 ­ Concrete DIVISION 3 - CONCRETE Note: This is a guide for Designers

  1. Coupled Damage and Plasticity Modelling in Transient Dynamic Analysis of Concrete

    E-Print Network [OSTI]

    Coupled Damage and Plasticity Modelling in Transient Dynamic Analysis of Concrete F. Gatuingt Abstract In a concrete structure subjected to an explosion, for example a concrete slab, the material on the same concrete. Computations of split Hopkinson tests on confined concrete, a tensile test with scabbing

  2. asphalt concrete overlays: Topics by E-print Network

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

    experimental results for concrete containing virgin limestone Paulino, Glaucio H. 71 Life Cycle Assessment of Reclaimed Asphalt Pavement Energy Storage, Conversion and Utilization...

  3. Sustained concrete attack by low-temperature, fragmented core debris

    SciTech Connect (OSTI)

    Tarbell, W.W.; Bradley, D.R.; Blose, R.E.; Ross, J.W.; Gilbert, D.W.

    1987-07-01T23:59:59.000Z

    Four experiments were performed to study the interactions between low-temperature core debris and concretes typical of reactor structures. The tests addressed accident situations where the core debris is at elevated temperature, but not molten. Concrete crucibles were formed in right-circular cylinders with 45 kg of steel spheres (approx.3-mm diameter) as the debris simulant. The debris was heated by an inductive power supply to nominal temperatures of 1473 K to 1673 K. Two tests were performed on each of two concrete types using either basalt or limestone aggregate. For each concrete, one test was performed with water atop the debris while the second had no water added. The results show that low-temperature core debris will erode either basalt or limestone-common sand concretes. Downward erosion rates of 3 to 4 cm/hr were recorded for both concrete types. The limestone concrete produced a crust layer within the debris bed that was effective in preventing the downward intrusion of water. The basalt concrete crust was formed above the debris and consisted of numerous, convoluted, thin layers. Carbon dioxide and water release from the decomposition of concrete were partially reduced by the metallic debris to yield carbon monoxide and hydrogen, respectively. The overlying water pool did not effect the reduction reactions.

  4. Optimization of Flexural capacity Of Reinforced fibrous concrete ...

    E-Print Network [OSTI]

    D Suji

    2005-12-22T23:59:59.000Z

    Dec 22, 2005 ... Optimization of Flexural capacity Of Reinforced fibrous concrete Beams Using Genetic Algorithm. D Suji (suji_mohan2002 ***at*** yahoo.com)

  5. On Concrete Universals: A Modern Treatment using Category Theory

    E-Print Network [OSTI]

    David Ellerman

    2014-05-09T23:59:59.000Z

    Today it would be considered "bad Platonic metaphysics" to think that among all the concrete instances of a property there could be a universal instance so that all instances had the property by virtue of participating in that concrete universal. Yet there is a mathematical theory, category theory, dating from the mid-20th century that shows how to precisely model concrete universals within the "Platonic Heaven" of mathematics. This paper, written for the philosophical logician, develops this category-theoretic treatment of concrete universals along with a new concept to abstractly model the functions of a brain.

  6. Dynamic Impact Analyses and Tests of Concrete Overpacks - 13638

    SciTech Connect (OSTI)

    Lee, Sanghoon; Cho, Sang-Soon; Kim, Ki-Young; Jeon, Je-Eon; Seo, Ki-Seog [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)] [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2013-07-01T23:59:59.000Z

    Concrete cask is an option for spent nuclear fuel interim storage which is prevailingly used in US. A concrete cask usually consists of metallic canister which confines the spent nuclear fuel and concrete overpack. When the overpack undergoes a severe missile impact which might be caused by a tornado or an aircraft crash, it should sustain acceptable level of structural integrity so that its radiation shielding capability and the retrievability of canister are maintained. Missile impact against a concrete overpack involves two damage modes, local damage and global damage. Local damage of concrete is usually evaluated by empirical formulas while the global damage is evaluated by finite element analysis. In many cases, those two damage modes are evaluated separately. In this research, a series of numerical simulations are performed using finite element analysis to evaluate the global damage of concrete overpack as well as its local damage under high speed missile impact. We consider two types of concrete overpack, one with steel in-cased concrete without reinforcement and the other with partially-confined reinforced concrete. The numerical simulation results are compared with test results and it is shown that appropriate modeling of material failure is crucial in this analysis and the results are highly dependent on the choice of failure parameters. (authors)

  7. UNIT NUMBER SWMU 175 UNIT NAME: Concrete Rubble Pile (28...

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

    75 UNIT NAME: Concrete Rubble Pile (28) REGULATORY STATUS: AOC LOCATION: Outside Security Fence, East of C-360 Building in KPDES Outfall Ditch 002. APPROXIMATE DIMENSIONS: 400 ft...

  8. asphalt concrete surfaces: Topics by E-print Network

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

    Polymer Eythor Thorhallsson M that was done on concrete cylinders confined with basalt fibre reinforced polymer (BFRP) and examination of its of more ductile behaviour. Key...

  9. Service Contract Act of 1965, As Amended UT-B Contracts Div Page 1 of 4

    E-Print Network [OSTI]

    Pennycook, Steve

    Service Contract Act of 1965, As Amended UT-B Contracts Div Jan 2006 Page 1 of 4 sca-1965-ext-jan06.doc SERVICE CONTRACT ACT OF 1965, AS AMENDED (Jan 2006) (a) Definitions. "Act," as used in this clause, means the Service Contract Act of 1965, as amended (41 U.S.C. 351, et seq.). "Service employee," as used

  10. CSEM WP 118 The Impact of the Clean Air Act Amendments of 1990

    E-Print Network [OSTI]

    California at Berkeley. University of

    CSEM WP 118 The Impact of the Clean Air Act Amendments of 1990 on Electric Utilities and Coal Mines of the Clean Air Act Amendments of 1990 on Electric Utilities and Coal Mines: Evidence from the Stock Market at Davis, crknittel@ucdavis.edu. #12;2 The Impact of the Clean Air Act Amendments of 1990 on Electric

  11. NOTICE OF CHANGE IN PROPOSED REGULATION AMENDMENT Date: May 13, 2009

    E-Print Network [OSTI]

    Wu, Shin-Tson

    REGULATION AMENDMENT: Philip Fairey, Deputy Director, Florida Solar Energy Center COMMENTS CONCERNINGNOTICE OF CHANGE IN PROPOSED REGULATION AMENDMENT Date: May 13, 2009 REGULATION TITLE: REGULATION THE PROPOSED REGULATION AMENDMENT SHOULD BE SUBMITTED WITHIN 14 DAYS OF THE DATE OF THIS NOTICE TO THE CONTACT

  12. AMENDMENT RECOMMENDATIONS TO THE NWPCC PERTAINING TO THE FPC and FPCOB

    E-Print Network [OSTI]

    AMENDMENT RECOMMENDATIONS TO THE NWPCC PERTAINING TO THE FPC and FPCOB Columbia Basin Fish and Wildlife Authority Amendment 2.1.5.4 Fish Passage Center Include the following language in the Program: Retain the existing Fish Passage Center language (2003 Mainstem Amendment, pages 27-28) in the Program

  13. Price-Anderson Amendments Act UT-B Contracts Div Page 1 of 1

    E-Print Network [OSTI]

    Pennycook, Steve

    Price-Anderson Amendments Act UT-B Contracts Div Dec 2010 Page 1 of 1 paaa-ext-dec10.docx PRICE-ANDERSON AMENDMENTS ACT (December 2010) (a) This Agreement is subject to the Price-Anderson Amendments Act, Section and Radiological Protection Division. (2) The Seller shall report to the Company's Technical Project Officer (TPO

  14. PAGES11. CONTRACT lD CODE IPAGE AMENDMENT OF SOLICITATION/MODIFICATION 0': CONTRACT OF,

    E-Print Network [OSTI]

    receipt of Offers D is extended. D is not extended. Offers must acknowledge receipt of this amendment: (a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT

  15. AMENDMENT OF SOLIC ITATION/MODIFICATION OF CONTRACT 11. CONTRACT ID CODE

    E-Print Network [OSTI]

    for receipt of Offers 0 is extended, 0 is not extended. Offers must acknowledge receipt of this amendment: (a) By completing Items 8 and 15, and returning copies of the amendment: (b) By acknowledging receipt a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED

  16. AMENDMENT OF SOLICIT ATION/MODIFICA TION OF CONTRACT 1. CONTRACTID CODE

    E-Print Network [OSTI]

    must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR

  17. 11. CONTRACT 10 CODE OF PAGESIPAGE AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    E-Print Network [OSTI]

    is not extended. Offers must acknowledge receipt of this amendment prior to the hour and date spe copies of the amendm~nt; (b) 8y acknowledging receipt of this amendment on each copy of the offer and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT

  18. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE

    E-Print Network [OSTI]

    for receipt of Offers is extended, is not extended. Offers must acknowledge receipt of this amendment prior) By completing Items 8 and 15, and returning _copies of the amendment; (b) By acknowledging receipt a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED

  19. AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

    E-Print Network [OSTI]

    for receipt of Offers D is extended, 0 is not extended. Offers must acknowledge receipt of this amendment: (a) By completing Items 8 and 15 , and returning copies of the amendment; (b) By acknowledging includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT

  20. Growth of chrysanthemums in sewage sludge amended media

    E-Print Network [OSTI]

    Schlutt, Edward Frederick

    1979-01-01T23:59:59.000Z

    1979 ABSTRACT Growth of Chrysanthemums in Sewage Sludge Amended Media. (December 1979) Edwaz d Fnedez ick Schlutt, Jr . B. S. , Texas AFN University Chairman of Advisory Committee: Dr. Everett R. Emino Chr santhemum morifolium cv. 'Bz ight Golden... porosity, total postharvest porosity, non-capillazy pore space, pre- harvest pH and postharvest pH in sewage sludge amended peat-perlite media. 40 TABLE 14. Average heavy metal content in 100% sewage sludge (ug/gm) . 42 TABLE 16. Zinc content (ug/gm...

  1. Fast Flux Test Facility final safety analysis report. Amendment 73

    SciTech Connect (OSTI)

    Gantt, D.A.

    1993-08-01T23:59:59.000Z

    This report provides Final Safety Analysis Report (FSAR) Amendment 73 for incorporation into the Fast Flux Test Facility (FFTR) FSAR set. This page change incorporates Engineering Change Notices (ECNs) issued subsequent to Amendment 72 and approved for incorparoration before May 6, 1993. These changes include: Chapter 3, design criteria structures, equipment, and systems; chapter 5B, reactor coolant system; chapter 7, instrumentation and control systems; chapter 9, auxiliary systems; chapter 11, reactor refueling system; chapter 12, radiation protection and waste management; chapter 13, conduct of operations; chapter 17, technical specifications; chapter 20, FFTF criticality specifications; appendix C, local fuel failure events; and appendix Fl, operation at 680{degrees}F inlet temperature.

  2. CPI Concrete Plant International 2 | 2013 www.cpi-worldwide.com2 PRECAST CONCRETE ELEMENTS

    E-Print Network [OSTI]

    to the inherent lack of thermal conductivity in CFRP composites. In addition to offering solid structural and ther with discrete zones of solid concrete can provide a high degree of structural composite action, but also creates, but compromises thermal effi- ciency by creating thermal breaks in the insulation. Carbon-fiber reinforced polymer

  3. Experimental and Analytical Studies on Old Reinforced Concrete Buildings with Seismically Vulnerable Beam-Column Joints

    E-Print Network [OSTI]

    PARK, SANGJOON

    2010-01-01T23:59:59.000Z

    concrete thickness of the beam cross- sections were measured after testingconducted at the testing day. Table B.3 Concrete cylindertesting (d) EW beam (c) NS beam Figure V.52 Failure of SP4 after removing concrete

  4. Analytical and experimental study of seismic performance of reinforced concrete frames infilled with masonry walls

    E-Print Network [OSTI]

    Stavridis, Andreas

    2009-01-01T23:59:59.000Z

    of concrete and implications for choice of testingTable Testing of Gravity Load Designed Reinforced ConcreteConcrete Institute ASCE American Society of Civil Engineers ASTM American Society for Testing

  5. Analytical Modeling of Cyclic Shear - Flexure Interaction in Reinforced Concrete Structural Walls

    E-Print Network [OSTI]

    Kolozvari, Kristijan

    2013-01-01T23:59:59.000Z

    Strength of Concrete at the Day of Testing (Tran,Strength of Concrete at the Day of Testing (Tran, 2012) No.concrete compressive strengths at the time of testing ranged

  6. Seismic Performance of Reinforced Concrete Bridges Allowed to Uplift During Multi-Directional Excitation

    E-Print Network [OSTI]

    Espinoza, Andres Oscar

    2011-01-01T23:59:59.000Z

    were cast for testing concrete compressive strength at 7strength of column concrete on testing day was about 4.7Concrete Cylinders.. 39   Table 3.4: Testing

  7. Construction and Preliminary HVS Tests of Pre-Cast Concrete Pavement Slabs

    E-Print Network [OSTI]

    Kohler, Erwin R.; du Plessis, Louw; Theyse, Hechter

    2008-01-01T23:59:59.000Z

    Cast Concrete Pavement Slabs with HVS Testing. ” TechnicalCast Concrete Pavement Slabs with HVS Testing Signatures: E.subgrade. FWD testing on the centers of the concrete slabs

  8. Transportation Research Board AFN 10: Basic Research and Emerging Technologies in Concrete

    E-Print Network [OSTI]

    Transportation Research Board AFN 10: Basic Research and Emerging Technologies in Concrete I will identify potential problems related to concrete materials, and develop research needs statement within STATEMENT AND BACKGROUND The chloride induced corrosion of steel reinforcement embedded in concrete

  9. Experimental and Theoretical Studies on Mechanical Properties of Complex Oxides in Concrete

    E-Print Network [OSTI]

    Moon, Juhyuk

    2013-01-01T23:59:59.000Z

    0 to 100% slag, Cement and Concrete Research, 40 (2010) 971-ray microscopy, Cement and Concrete Research, 35 (2005) 351-ray microscopy, Cement and Concrete Research, 28 (1998) 411-

  10. CONCRETE STRUCTURE DESIGN USING MIXED-INTEGER NONLINEAR PROGRAMMING WITH COMPLEMENTARITY

    E-Print Network [OSTI]

    CONCRETE STRUCTURE DESIGN USING MIXED-INTEGER NONLINEAR PROGRAMMING WITH COMPLEMENTARITY programming (MINLP) formulation to achieve mini- mum-cost designs for reinforced concrete (RC) structures for concrete, steel reinforcing bars, and formwork according to typical contractor methods. Restrictions

  11. A TIME-DEPENDENT METHOD FOR CHARACTERIZING THE DIFFUSION OF RADON-222 IN CONCRETE

    E-Print Network [OSTI]

    Zapalac, Geordie H.

    2013-01-01T23:59:59.000Z

    Coefficient of Radon in Concrete", Health Phys. 30, 263. Didiffusion of radon through concrete. The source loop exposesa 2.5-cm sample taken from a different type of concrete.

  12. Development of load and resistance factor design for FRP strengthening of reinforced concrete structures

    E-Print Network [OSTI]

    Atadero, Rebecca Anne

    2006-01-01T23:59:59.000Z

    Design for FRP Strengthening of Reinforced Concrete. In 7 thFRP) Reinforcement for Concrete Structure; Shield, C.K. ,G.C. Fatigue Performance of Concrete Beams Strengthened with

  13. Instantaneous In-Situ Determination of Water-Cement Ratio of Fresh Concrete

    E-Print Network [OSTI]

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

    2010-01-01T23:59:59.000Z

    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.

  14. Sensitivity Analysis of 2002 Design Guide Distress Prediction Models for Jointed Plain Concrete Pavement

    E-Print Network [OSTI]

    Kannekanti, Venkata N.; Harvey, John T

    2007-01-01T23:59:59.000Z

    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

  15. Modeling and Simulation of Electromutagenic Processes for Multiscale Modification of Concrete Jinko Kanno1

    E-Print Network [OSTI]

    Kanno,Jinko

    Modeling and Simulation of Electromutagenic Processes for Multiscale Modification of Concrete Jinko Engineering Program, Louisiana Tech University ABSTRACT Concrete contains numerous pores that allow of concrete with solid materials or nanoparticles tends to improve the strength significantly. In this paper

  16. Earth pressures on reinforced concrete box culverts

    E-Print Network [OSTI]

    Brown, Dale Evan

    1986-01-01T23:59:59.000Z

    . 28 day Compressive Strength in psi 3000 4150 Max. Water/Cement Ratio in gallons/sack Slump Range in inches 7. 0 3-4 5. 4 - 5. 7 3. 5 - 5. 5 Note: 1 yd = 0. 765 m , 1 psi = 6. 89 kpa, 1 in. = 2. 54 cm. , 3 3 1 sack of cement = 94 lb, 1 lb...-structure interface. It also provides the highest degree of 6000 5000 '"4000 ~ 3000 C. I2000 0 0 7 14 21 28 35 Time (days) FIG. 3 - Measured Concrete Compressive Strength (1 psi 6. 89 kpa) 42 PLAN 14 ~ ~ 11 15 ~ ~ 12 & 16 + ~ 13 ~ 8 ~ 9 ~ 10 5 ~ 3...

  17. Decontamination of large horizontal concrete surfaces outdoors

    SciTech Connect (OSTI)

    Barbier, M.M.; Chester, C.V.

    1980-01-01T23:59:59.000Z

    A study is being conducted of the resources and planning that would be required to clean up an extensive contamination of the outdoor environment. As part of this study, an assessment of the fleet of machines needed for decontaminating large outdoor surfaces of horizontal concrete will be attempted. The operations required are described. The performance of applicable existing equipment is analyzed in terms of area cleaned per unit time, and the comprehensive cost of decontamination per unit area is derived. Shielded equipment for measuring directional radiation and continuously monitoring decontamination work are described. Shielding of drivers' cabs and remote control vehicles is addressed.

  18. Management of the aging of critical safety-related concrete structures in light-water reactor plants

    SciTech Connect (OSTI)

    Naus, D.J.; Oland, C.B. (Oak Ridge National Lab., TN (USA)); Arndt, E.G. (Nuclear Regulatory Commission, Washington, DC (USA))

    1990-01-01T23:59:59.000Z

    The Structural Aging Program has the overall objective of providing the USNRC with an improved basis for evaluating nuclear power plant safety-related structures for continued service. The program consists of a management task and three technical tasks: materials property data base, structural component assessment/repair technology, and quantitative methodology for continued-service determinations. Objectives, accomplishments, and planned activities under each of these tasks are presented. Major program accomplishments include development of a materials property data base for structural materials as well as an aging assessment methodology for concrete structures in nuclear power plants. Furthermore, a review and assessment of inservice inspection techniques for concrete materials and structures has been complete, and work on development of a methodology which can be used for performing current as well as reliability-based future condition assessment of concrete structures is well under way. 43 refs., 3 tabs.

  19. Performance-Based Concrete Pavement Mix Design System Performance-Based Design Guide for New and Rehabilitated

    E-Print Network [OSTI]

    Strategic Research Plan #12;· Performance-Based Concrete Pavement Mix Design System · Performance-Based Design Guide for New and Rehabilitated Concrete Pavements · High-Speed Nondestructive Testing Pavements · High-Speed Concrete Pavement Rehabilitation and Construction · Concrete Pavement Business

  20. Meso-Scale Model for Simulations of Concrete Subjected to Cryogenic Temperatures

    E-Print Network [OSTI]

    Masad, Noor Ahmad

    2013-07-17T23:59:59.000Z

    temperatures (Marshall, 1982). The air-entrained concrete has the ability to resist freezing-thawing cycles; therefore, it is recommended to be used in applications that need frost resistance. Air entrained concrete has air pores that can handle... and relief the pressure due to ice 13 formulation, however, the ice growth in non-air entrained concrete causes expand in cracks which lead to deterioration of concrete after many freeze-thaw cycles. 2.3 Concrete Plasticity Damage Models Concrete...

  1. Radionuclide Retention in Concrete Wasteforms - FY13

    SciTech Connect (OSTI)

    Snyder, Michelle MV; Golovich, Elizabeth C.; Wellman, Dawn M.; Crum, Jarrod V.; Lapierre, Robert; Dage, Denomy C.; Parker, Kent E.; Cordova, Elsa A.

    2013-10-15T23:59:59.000Z

    Assessing long-term performance of Category 3 waste cement grouts for radionuclide encasement requires knowledge of the radionuclide-cement interactions and mechanisms of retention (i.e., sorption or precipitation); the mechanism of contaminant release; the significance of contaminant release pathways; how wasteform performance is affected by the full range of environmental conditions within the disposal facility; the process of wasteform aging under conditions that are representative of processes occurring in response to changing environmental conditions within the disposal facility; the effect of wasteform aging on chemical, physical, and radiological properties; and the associated impact on contaminant release. This knowledge will enable accurate prediction of radionuclide fate when the wasteforms come in contact with groundwater. Data collected throughout the course of this work will be used to quantify the efficacy of concrete wasteforms, similar to those used in the disposal of low-level waste and mixed low-level waste, for the immobilization of key radionuclides (i.e., uranium, technetium, and iodine). Data collected will also be used to quantify the physical and chemical properties of the concrete affecting radionuclide retention.

  2. Perforation of thin unreinforced concrete slabs

    SciTech Connect (OSTI)

    Cargile, J.D. [Army Engineer Waterways Experiment Station, Vicksburg, MS (United States); Giltrud, M.E. [Defense Nuclear Agency, Washington, DC (United States); Luk, V.K. [Sandia National Labs., Albuquerque, NM (United States)

    1993-10-01T23:59:59.000Z

    This report discusses fourteen tests which were conducted to investigate the perforation of thin unreinforced concrete slabs. The 4340-steel projectile used in the test series is 50.8 mm in diameter, 355.6 mm in length, has a mass of 2.34 kg. and an ogive nose with caliber radius head of 3. The slabs, contained within steel culverts, are 1.52 m in diameter and consist of concrete with a nominal unconfined compressive strength of 38.2 MPa and maxima aggregate size of 9.5 mm. Slab thicknesses are 284.4, 254.0, 215.9 and 127.0 mm. Tests were conducted at impact velocities of about 313 m/s on all slab thicknesses and about 379 and 471 m/s on the 254.0-mm-thick slab. All tests were conducted at normal incidence to the slab. All tests were conducted at normal incidence to the slab. Information obtained from the tests used to determine the loading (deceleration) on the projectile during the perforation process, the velocity-displacement of the projectile as it perforated the slab, and the projectile position as damage occurred on the backface of the slab. The test projectile behaved essentially as a rigid body for all of the tests.

  3. Concrete decontamination by electro-hydraulic scabbling (EHS). Final report

    SciTech Connect (OSTI)

    NONE

    1997-10-01T23:59:59.000Z

    Contamination of concrete structures by radionuclides, hazardous metals and organic substances (including PCB`s) occurs at many DOE sites. The contamination of concrete structures (walls, floors, ceilings, etc.) varies in type, concentration, and especially depth of penetration into the concrete. In many instances, only the surface layer of concrete is contaminated, up to a depth of one inch, according to estimates provided in the R and D ID document. Then, removal of the concrete surface layer (scabbling) is considered to be the most effective decontamination method. Textron Systems Corp. (TSC) has developed a scabbling concept based on electro-mechanical phenomena accompanying strong electric pulses generated by applying high voltage at the concrete/water interface. Depending on the conditions, the electric discharge may occur either through a waste layer or through the concrete body itself. This report describes the development, testing, and results of this electro-mechanical process. Phase 1 demonstrated the feasibility of the process for the controlled removal of a thin layer of contaminated concrete. Phase 2 designed, fabricated, and tested an integrated subscale unit. This was tested at Fernald. In Phase 3, the scabbling unit was reconfigured to increase its power and processing rate. Technology transfer to an engineering contracting company is continuing.

  4. Portland Cement Concrete Pavement Shannon Golden, Alabama DOT

    E-Print Network [OSTI]

    Portland Cement Concrete Pavement Shannon Golden, Alabama DOT PORTLAND CEMENT CONCRETE PAVEMENT may be substituted for part of the required Portland cement. Substitution of mineral admixtures shall Cement shall not exceed the percentages shown in the following table: MAXIMUM ALLOWABLE SUBSTITUTION

  5. Performance of Concrete Made With Slag Cement and

    E-Print Network [OSTI]

    Performance of Concrete Made With Slag Cement and Portland-Limestone Blended Cement Philadelphia;Today's Discussion ! The materials ! Slag cement ! Portland-limestone cement ! Use in concrete is slag cement? #12;! Non-metallic product of an iron blast furnace ! Granulated ! Ground ! Cementitious

  6. Electropositive bivalent metallic ion unsaturated polyester complexed polymer concrete

    DOE Patents [OSTI]

    Sugama, T.; Kukacka, L.E.; Horn, W.H.

    1983-05-13T23:59:59.000Z

    Quick setting polymer concrete compositions are described which are mixtures of unsaturated polyesters and crosslinking monomers together with appropriate initiators and promoters in association with aggregate which may be wet and a source of bivalent metallic ions which will set to polymer concrete with excellent structural properties.

  7. Method for incorporating radioactive phosphoric acid solutions in concrete

    DOE Patents [OSTI]

    Wolf, Gary A [Kennewick, WA; Smith, Jeffrey W [Lancaster, OH; Ihle, Nathan C [Walla Walla, WA

    1984-01-01T23:59:59.000Z

    A method for incorporating radioactive phosphoric acid solutions in concrete is described wherein the phosphoric acid is reacted with Ca(OH).sub.2 to form a precipitate of hydroxyapatite and the hydroxyapatite is mixed with portland cement to form concrete.

  8. 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

  9. Hybrid FRP/Concrete Structural Members and Sami Rizkalla

    E-Print Network [OSTI]

    with differentfiber orientations partially and/or totallyfilled with concrete. Hollow FRP and steel tubes were testedHybrid FRP/Concrete Structural Members Amir Fam1 and Sami Rizkalla 2 Department of Civil, highway overhead sign structures and bridges. The experimental program included testing to failure tubes

  10. SMART TEXTILE REINFORCED CONCRETE SENSORY STRUCTURES Yiska Goldfeld1

    E-Print Network [OSTI]

    Boyer, Edmond

    SMART TEXTILE REINFORCED CONCRETE SENSORY STRUCTURES Yiska Goldfeld1 , Oded Rabinovitch1 , Till Quadflieg2 , Barak Fishbain1 , Thomas Gries2 1 Faculty of Civil and Environmental Engineering, Technion the feasibility of a new class of smart textile reinforced concrete (TRC) structural elements with inherent

  11. Pultruded FRP Plank as Formwork and Reinforcement for Concrete Members

    E-Print Network [OSTI]

    Russell, Jeffrey S.

    and sand, were epoxy bonded to the planks. Concrete beams using the aggregate-coated FRP planks were plank specimens greater than the steel rebar reinforced control specimen. ACI 440 equations were found control in a new bridge deck that was constructed without any reinforcing bars in the concrete deck (also

  12. Integrated Materials and Construction Practices (IMCP) for Concrete Pavement

    E-Print Network [OSTI]

    Integrated Materials and Construction Practices (IMCP) for Concrete Pavement Workshop Participant Handbook Prepared for Prepared by Federal Highway Administration National Concrete Pavement Technology Center Office of Pavement Technology at Iowa State University 400 7th Street AW 2711 South Loop Drive

  13. Electropositive bivalent metallic ion unsaturated polyester complexed polymer concrete

    DOE Patents [OSTI]

    Sugama, Toshifumi (Mastic Beach, NY); Kukacka, Lawrence E. (Port Jefferson, NY); Horn, William H. (Brookhaven, NY)

    1985-01-01T23:59:59.000Z

    Quick setting polymer concrete compositions with excellent structural properties are disclosed; these polymer concrete compositions are mixtures of unsaturated polyesters and crosslinking monomers together with appropriate initiators and promoters in association with aggregate, which may be wet, and with a source of bivalent metallic ions.

  14. Electropositive bivalent metallic ion unsaturated polyester complexed polymer concrete

    DOE Patents [OSTI]

    Sugama, T.; Kukacka, L.E.; Horn, W.H.

    1981-11-04T23:59:59.000Z

    Quick setting polymer concrete compositions which are mixtures of unsaturated polyesters and crosslinking monomers together with appropriate initiators and promoters in association with aggregate which may be wet and a source of bivalent metallic ions which will set to polymer concrete with excellent structural properties.

  15. Corrosion Repair and Corrosion Protection of Reinforced Concrete Structures in

    E-Print Network [OSTI]

    Das, Suman

    11/14/2014 1 Corrosion Repair and Corrosion Protection of Reinforced Concrete Structures in Pulp and Paper Mills Vector Construction / Vector Corrosion Technologies www.vectorgroup.com www.vector-corrosion.com Presentation Outline · Introduction · Corrosion of Reinforced Concrete Structures · Protection of Chests

  16. THERMAL CONDUCTIVITY OF HEMP CONCRETES: VARIATION WITH FORMULATION, DENSITY AND

    E-Print Network [OSTI]

    envelope and on the performance of systems. This behaviour is related to hygric and thermal propertiesTHERMAL CONDUCTIVITY OF HEMP CONCRETES: VARIATION WITH FORMULATION, DENSITY AND WATER CONTENT of formulation, density and water content on the thermal conductivity of hemp concretes. The investigations

  17. ARE DEICING SALTS NECESSARY TO PROMOTE SCALING IN CONCRETE?

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . Keywords: Concrete, cryosuction, durability, frost, poromechanics, porous media, thermo- dynamics, spallingARE DEICING SALTS NECESSARY TO PROMOTE SCALING IN CONCRETE? A. Fabbri1,2 , O. Coussy1 , T. Fen of the different phases that form the porous material. It eventually predicts that a less perme- able sample

  18. The Thermal Conductivity of Low Density Concretes Containing Perlite

    E-Print Network [OSTI]

    Yarbrough, D. W.

    concretes made from Portland cement and perlite has been measured near room temperature using an unguarded linear heat flow apparatus. Perlite based concretes having densities from 44.3 1b/ft 3 to 66.6 1b/ft 3 were found to have thermal conductivities...

  19. Method for incorporating radioactive phosphoric acid solutions in concrete

    DOE Patents [OSTI]

    Wolf, G.A.; Smith, J.W.; Ihle, N.C.

    1982-07-08T23:59:59.000Z

    A method for incorporating radioactive phosphoric acid solutions in concrete is described wherein the phosphoric acid is reacted with Ca(OH)/sub 2/ to form a precipitate of hydroxyapatite and the hydroxyapatite is mixed with Portland cement to form concrete.

  20. Energy Efficiency Improvement and Cost Saving Oportunities for the Concrete Industry

    E-Print Network [OSTI]

    Kermeli, Katerina

    2013-01-01T23:59:59.000Z

    Testing and Materials (ASTM) C94. Standard Specification for Ready Mixed Concrete.Concrete. West Conshohocken, Pennsylvania. American Society for Testing

  1. Interlingual Encounter in Pierre Garnier and Niikuni Seiichi’s French-Japanese Concrete Poetry

    E-Print Network [OSTI]

    Wong, Elaine S.

    2015-01-01T23:59:59.000Z

    P. (1968d). Spatialisme et poésie concrète [Spatialismand concrete poetry]. Paris: Gallimard. Garnier, P. (Gomringer, E. (1968). Concrete poetry (I. M. Sinor & M. E.

  2. Construction and Preliminary HVS Tests of Pre-Cast Concrete Pavement Slabs

    E-Print Network [OSTI]

    Kohler, Erwin R.; du Plessis, Louw; Theyse, Hechter

    2008-01-01T23:59:59.000Z

    22 Figure 22. FWD data collection points on the concreteelastic moduli for the concrete, the cemented base, and the30 Figure 29. Backcalculated stiffness of concrete

  3. aggregates by relationship to concrete: Topics by E-print Network

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

    Concrete under Reversed Cyclic Loading by Jun Wei Behaviour and Analysis of Steel Fibre-Reinforced Concrete Subjected to Reversed Cyclic Loading Jun Wei Luo for developing...

  4. Numerical analysis of masonry-infilled reinforced concrete frames subjected to seismic loads and experimental evaluation of retrofit techniques

    E-Print Network [OSTI]

    Koutromanos, Ioannis

    2011-01-01T23:59:59.000Z

    infill Load ratio age at testing Concrete frame Infill paneltesting of masonry infilled reinforced concrete frame,” ASCE

  5. Microscale investigation of the corrosion performances of low-carbon and stainless steels in highly alkaline concretes

    E-Print Network [OSTI]

    Itty, Pierre-Adrien

    2012-01-01T23:59:59.000Z

    can diffuse through the porous concrete and react with thein concrete, oxygen diffuses through the porous hydrated

  6. SECTION 340 WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 340 ­ WRDA 1992, AS AMENDED ENVIRONMENTAL INFRASTRUCTURE SOUTHERN WEST VIRGINIA MODEL of six models for the provision of environmental assistance to non-Federal interests in southern West Virginia pursuant to Section 340 of the Water Resources Development Act of 1992, Public Law 102

  7. Amended on April 6, 2011 Scholarship Award Policy

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    Amended on April 6, 2011 Scholarship Award Policy Department of Mining Engineering College the guidelines as stated in the SME Student Chapter Professional and Social Responsibility Policy as outlined in the SME Student Chapter Professional and So- cial Responsibility Policy. This scholarship

  8. December 12, 2012 AMENDED ANNOUNCEMENT OF FEDERAL FUNDING OPPORTUNITY FOR

    E-Print Network [OSTI]

    December 12, 2012 AMENDED ANNOUNCEMENT OF FEDERAL FUNDING OPPORTUNITY FOR THE NIST SMART GRID://www.nist.gov/smartgrid/upload/NIST-20121129-Smart-Grid-FFO.pdf) announcing the solicitation of proposals for the fiscal year 2013 Smart Grid. #12;1 12/12/12 ANNOUNCEMENT OF FEDERAL FUNDING OPPORTUNITY (FFO) Smart Grid Interoperability Standards

  9. Effects of remediation amendments on vadose zone microorganisms

    SciTech Connect (OSTI)

    Miller, Hannah M.; Tilton, Fred A.

    2012-08-10T23:59:59.000Z

    Surfactant-based foam delivery technology has been studied to remediate Hanford 200 area deep vadose zone sediment. However, the surfactants and remediation amendments have an unknown effect on indigenous subsurface microorganisms. Microbial populations are important factors to consider in remediation efforts due to their potential to alter soil geochemistry. This project focuses on measuring microbial metabolic responses to remediation amendments in batch and column studies using Deep Vadose Zone Sediments. Initial studies of the microbes from Hanford 200 area deep vadose zone sediment showed surfactants sodium dodecyl sulfate (SDS) and cocamidopropyl betaine (CAPB) and remediation amendment calcium polysulfide (CPS) had no affect on microbial growth using BiologTM Ecoplates. To move towards a more realistic field analog, soil columns were packed with Hanford 200 Area sediment. Once microbial growth in the column was verified by observing growth of the effluent solution on tryptic soy agar plates, remedial surfactants were injected into the columns, and the resulting metabolic diversity was measured. Results suggest surfactant sodium dodecyl sulfate (SDS) stimulates microbial growth. The soil columns were also visualized using X-ray microtomography to inspect soil packing and possibly probe for evidence of biofilms. Overall, BiologTM Ecoplates provide a rapid assay to predict effects of remediation amendments on Hanford 200 area deep vadose zone microorganisms.

  10. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR DESIGN AND CONSTRUCTION-Federal interests in central New Mexico pursuant to Section 593 of the Water Resources Development Act of 1999") and Section 401 of the Federal Water Pollution Control Act (33 U.S.C. 1341). Compliance with all applicable

  11. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR CONSTRUCTION ASSISTANCE New Mexico pursuant to Section 593 of the Water Resources Development Act of 1999, Public Law 106, NEPA and Section 401 of the Federal Water Pollution Control Act (33 U.S.C. 1341). #12;

  12. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR CONSTRUCTION ASSISTANCE to non-Federal interests in central New Mexico pursuant to Section 593 of the Water Resources Development of the Federal Water Pollution Control Act (33 U.S.C. 1341). #12;

  13. SECTION 593 WRDA 1999, AS AMENDED CENTRAL NEW MEXICO

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SECTION 593 ­ WRDA 1999, AS AMENDED CENTRAL NEW MEXICO MODEL AGREEMENT FOR DESIGN AND CONSTRUCTION environmental assistance to non-Federal interests in central New Mexico pursuant to Section 593 of the Water Pollution Control Act (33 U.S.C. 1341). Compliance with all applicable environmental laws and regulations

  14. Date Created: March 2008 Date Amended: March 2009

    E-Print Network [OSTI]

    Subramanian, Sriram

    Date Created: March 2008 Date Amended: March 2009 DYSLEXIA POLICY.doc- 1 - DYSLEXIA POLICY 1 (both written and spoken) reading, memory and organisation associated with the terms dyslexia, dyspraxia this document the term `dyslexia' will be used in a comprehensive way to refer to all of the above. The College

  15. Direct Speciation of Phosphorus in Alum-Amended Poultry Litter

    E-Print Network [OSTI]

    Sparks, Donald L.

    , and Department of Plant and Soil Sciences, University of Delaware, Newark, Delaware 19717 Amending poultry litter management practice. Although its effectiveness has been demonstrated on a macroscopic scale in the field prerequisite for the assessment of the sustainability of intensive poultry operations. Both solid- state MAS

  16. FLORIDA ATLANTIC UNIVERSITY NOTICE OF PROPOSED REGULATION AMENDMENT

    E-Print Network [OSTI]

    Richman, Fred

    to the Florida administrative and judicial appeal process. The Regulation was last amended in 1987. The proposed of the General Counsel, 777 Glades Road, Boca Raton, Florida, 33431, (561) 297-3007 (phone), (561) 297-2787 (fax) The address of the Agency Clerk is Room 333367, Administration Building, Florida Atlantic University, Boca

  17. Structural aging program to assess the adequacy of critical concrete components in nuclear power plants

    SciTech Connect (OSTI)

    Naus, D.J.; Marchbanks, M.F.; Oland, C.B.; Arndt, E.G.

    1989-01-01T23:59:59.000Z

    The Structural Aging (SAG) Program is carried out by the Oak Ridge National Laboratory (ORNL) under sponsorship of the United States Nuclear Regulatory Commission (USNRC). The Program has evolved from preliminary studies conducted to evaluate the long-term environmental challenges to light-water reactor safety-related concrete civil structures. An important conclusion of these studies was that a damage methodology, which can provide a quantitative measure of a concrete structure's durability with respect to potential future requirements, needs to be developed. Under the SAG Program, this issue is being addressed through: establishment of a structural materials information center, evaluation of structural component assessment and repair technologies, and development of a quantitative methodology for structural aging determinations. Progress to date of each of these activities is presented as well as future plans. 7 refs., 5 figs.

  18. Testing and evaluation of electrokinetic decontamination of concrete

    SciTech Connect (OSTI)

    DePaoli, D.W.; Harris, M.T.; Ally, M.R. [Oak Ridge National Lab., TN (United States). Chemical Technology Div.] [and others

    1996-10-01T23:59:59.000Z

    The goals and objectives of the technical task plan (TTP) are to (1) describe the nature and extent of concrete contamination within the Department of Energy (DOE) complex and emerging and commercial technologies applicable to these problems; (2) to match technologies to the concrete problems and recommend up to four demonstrations; (3) to initiate recommended demonstrations; and (4) to continue investigation and evaluation of the application of electrokinetic decontamination processes to concrete. This document presents findings of experimental and theoretical studies of the electrokinetic decontamination (EK) process and their implications for field demonstrations. This effort is an extension of the work performed under TTP 142005, ``Electroosmotic Concrete Decontamination. The goals of this task were to determine the applicability of EK for treating contaminated concrete and, if warranted, to evaluate EK as a potential technology for demonstration. 62 refs.

  19. SLAM: a sodium-limestone concrete ablation model

    SciTech Connect (OSTI)

    Suo-Anttila, A.J.

    1983-12-01T23:59:59.000Z

    SLAM is a three-region model, containing a pool (sodium and reaction debris) region, a dry (boundary layer and dehydrated concrete) region, and a wet (hydrated concrete) region. The model includes a solution to the mass, momentum, and energy equations in each region. A chemical kinetics model is included to provide heat sources due to chemical reactions between the sodium and the concrete. Both isolated model as well as integrated whole code evaluations have been made with good results. The chemical kinetics and water migration models were evaluated separately, with good results. Several small and large-scale sodium limestone concrete experiments were simulated with reasonable agreement between SLAM and the experimental results. The SLAM code was applied to investigate the effects of mixing, pool temperature, pool depth and fluidization. All these phenomena were found to be of significance in the predicted response of the sodium concrete interaction. Pool fluidization is predicted to be the most important variable in large scale interactions.

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

    E-Print Network [OSTI]

    Harms, Kyle E.

    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 sustainability has risen, engineers have looked to alternative binders such as fly ash, silica fume, slag cement

  1. TSNo s02-staats173645-P Alum Amendment Effects on Soil Phosphorus Stabilization in Poultry Litter Amended Sandy Soils.

    E-Print Network [OSTI]

    Sparks, Donald L.

    TSNo s02-staats173645-P Title Alum Amendment Effects on Soil Phosphorus Stabilization in Poultry.e., phosphorus (P)) problems in Atlantic Coastal Plain soils due to land application of poultry litter and manure. The objective of this study was to investigate the alum treatment remediation strategy to reduce P release from

  2. SEQUESTERING AGENTS FOR METAL IMMOBILIZATION APPLICATION TO THE DEVELOPMENT OF ACTIVE CAPS IN FRESH AND SALT WATER SEDIMENTS

    SciTech Connect (OSTI)

    Knox, A; Michael Paller, M

    2006-11-17T23:59:59.000Z

    This research evaluated the removal of inorganic contaminants by a variety of amendments and mixtures of amendments in fresh and salt water. A series of removal and retention batch experiments was conducted to identify the best treatment for metal removal. Metal removal by the amendments was evaluated by calculating the partition coefficient and percent removal. Retention of metals by the amendments was evaluated in retention (desorption) studies in which residue from the removal studies was extracted with 1 M MgCl{sub 2} solution. The results indicated that phosphate amendments, some organoclays (e.g., OCB-750), and the biopolymer, chitosan, are very effective in removal and retention of metals in both fresh and salt water. These amendments are being evaluated further as components in the development of active caps for sediment remediation.

  3. Sulfate and acid resistant concrete and mortar

    DOE Patents [OSTI]

    Liskowitz, John W. (Belle Mead, NJ); Wecharatana, Methi (Parsippany, NJ); Jaturapitakkul, Chai (Bangkok, TH); Cerkanowicz, deceased, Anthony E. (late of Livingston, NJ)

    1998-01-01T23:59:59.000Z

    The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise cementitious materials and a fine aggregate. The cementitous materials may comprise fly ash as well as cement. The fine aggregate may comprise fly ash as well as sand. The total amount of fly ash in the hardenable mixture ranges from about 60% to about 120% of the total amount of cement, by weight, whether the fly ash is included as a cementious material, fine aggregate, or an additive, or any combination of the foregoing. In specific examples, mortar containing 50% fly ash and 50% cement in cementitious materials demonstrated superior properties of corrosion resistance.

  4. Sulfate and acid resistant concrete and mortar

    DOE Patents [OSTI]

    Liskowitz, J.W.; Wecharatana, M.; Jaturapitakkul, C.; Cerkanowicz, A.E.

    1998-06-30T23:59:59.000Z

    The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise cementitious materials and a fine aggregate. The cementitous materials may comprise fly ash as well as cement. The fine aggregate may comprise fly ash as well as sand. The total amount of fly ash in the hardenable mixture ranges from about 60% to about 120% of the total amount of cement, by weight, whether the fly ash is included as a cementious material, fine aggregate, or an additive, or any combination of the foregoing. In specific examples, mortar containing 50% fly ash and 50% cement in cementitious materials demonstrated superior properties of corrosion resistance. 6 figs.

  5. Demonstration recommendations for accelerated testing of concrete decontamination methods

    SciTech Connect (OSTI)

    Dickerson, K.S.; Ally, M.R.; Brown, C.H.; Morris, M.I.; Wilson-Nichols, M.J.

    1995-12-01T23:59:59.000Z

    A large number of aging US Department of Energy (DOE) surplus facilities located throughout the US require deactivation, decontamination, and decommissioning. Although several technologies are available commercially for concrete decontamination, emerging technologies with potential to reduce secondary waste and minimize the impact and risk to workers and the environment are needed. In response to these needs, the Accelerated Testing of Concrete Decontamination Methods project team described the nature and extent of contaminated concrete within the DOE complex and identified applicable emerging technologies. Existing information used to describe the nature and extent of contaminated concrete indicates that the most frequently occurring radiological contaminants are {sup 137}Cs, {sup 238}U (and its daughters), {sup 60}Co, {sup 90}Sr, and tritium. The total area of radionuclide-contaminated concrete within the DOE complex is estimated to be in the range of 7.9 {times} 10{sup 8} ft{sup 2}or approximately 18,000 acres. Concrete decontamination problems were matched with emerging technologies to recommend demonstrations considered to provide the most benefit to decontamination of concrete within the DOE complex. Emerging technologies with the most potential benefit were biological decontamination, electro-hydraulic scabbling, electrokinetics, and microwave scabbling.

  6. Effect of Concrete Wasteform Properties on Radionuclide Migration

    SciTech Connect (OSTI)

    Wellman, Dawn M.; Bovaird, Chase C.; Mattigod, Shas V.; Parker, Kent E.; Ermi, Ruby M.; Wood, Marcus I.

    2008-09-30T23:59:59.000Z

    The objective of this investigation was to initiate numerous sets of concrete-soil half-cell tests to quantify 1) diffusion of I and Tc from concrete into uncontaminated soil after 1 and 2 years, 2) I and Re (set 1) and Tc (set 2) diffusion from fractured concrete into uncontaminated soil, and 3) evaluate the moisture distribution profile within the sediment half-cell. These half-cells will be section in FY2009 and FY2010. Additionally, 1) concrete-soil half-cells initiated during FY2007 using fractured prepared with and without metallic iron, half of which were carbonated using carbonated, were sectioned to evaluate the diffusion of I and Re in the concrete part of the half-cell under unsaturated conditions (4%, 7%, and 15% by wt moisture content), 2) concrete-soil half cells containing Tc were sectioned to measure the diffusion profile in the soil half-cell unsaturated conditions (4%, 7%, and 15% by wt moisture content), and 3) solubility measurements of uranium solid phases were completed under concrete porewater conditions. The results of these tests are presented.

  7. AMENDMENT TO PEPSI BEVERAGE AND SNACK FOOD AGREEMENT This Amendment to the Beverage and Snack Food Agreement ("Agreement") is made by

    E-Print Network [OSTI]

    Hill, Wendell T.

    AMENDMENT TO PEPSI BEVERAGE AND SNACK FOOD AGREEMENT V287054-C This Amendment to the Beverage") and PEPSICO, Inc. ("PepsiCo"), collectively referred to as the "Parties." WHEREAS, UM and Sponsor previously by UM or its designees during the term of the Agreement; and, WHEREAS, PepsiCo seeks access and use

  8. {sup 152}Eu depths profiles granite and concrete cores exposed to the Hiroshima atomic bomb

    SciTech Connect (OSTI)

    Shizuma, Kiyoshi; Iwatani, Kazuo [Hiroshima Univ. (Japan); Oka, Takamitsu [Kure Univ. (Japan)] [and others

    1997-06-01T23:59:59.000Z

    Two granite and two concrete core samples were obtained within 500 m from the hypocenter of the Hiroshima atomic bomb, and the depth profile of {sup 152}Eu was measured to evaluate the incident neutron spectrum. The granite cores were obtained from a pillar of the Motoyasu Bridge located 101 m from the hypocenter and from a granite rock in the Shirakami Shrine (379 m); the concrete cores were obtained from a gate in the Gokoku Shrine (398 m) and from top of the Hiroshima bank (250 m). The profiles of the specific activities of the cores were measured to a depth of 40 cm from the surface using low background germanium (Ge) spectrometers. According to the measured depth profiles, relaxation lengths of incident neutrons were derived as 13.6 cm for Motoyasu Bridge pillar (granite), 12.2 cm for Shirakami Shrine core (granite), and 9.6 cm for concrete cores of Gokoku Shrine and Hiroshima Bank. In addition, a comparison of the granite cores in Hiroshima showed good agreement with Nagasaki data. Present results indicates that the depth profile of {sup 152}Eu reflects incident neutrons not so high but in the epithermal region. 19 refs., 7 figs., 8 tabs.

  9. Analytical and numerical methods for processing Hopkinson Bar Loaded Bending test on concrete: a comparative study

    E-Print Network [OSTI]

    Boyer, Edmond

    Analytical and numerical methods for processing Hopkinson Bar Loaded Bending test on concrete on dynamic characteristics of concrete. Various techniques have been used to test concretes at high strain for concrete structures subjected to dynamic loading such as explosions or im- pacts require information

  10. Effect of Fiber Orientation and Ply Mix on Fiber Reinforced Polymer-Confined Concrete

    E-Print Network [OSTI]

    Entekhabi, Dara

    concrete by testing under uniaxial compression a designed array of plain concrete cylinders wrappedEffect of Fiber Orientation and Ply Mix on Fiber Reinforced Polymer-Confined Concrete Ching Au, A concrete lateral strain while the kink stress was found to upshift with increasing jacket stiffness

  11. 4 CONCRETE REPAIR BULLETIN MAY/JUNE2001 Laser Profilometry for

    E-Print Network [OSTI]

    Maerz, Norbert H.

    4 CONCRETE REPAIR BULLETIN MAY/JUNE2001 Laser Profilometry for Concrete Substrate Characterization and resins are non- corrosive, they are ideally suited for the repair and retrofitting of concrete bridges highly upon the quality of the bond between the concrete and the laminate. Experience has shown that when

  12. DESIGN GUIDELINES FOR CONCRETE BEAMS REINFORCED WITH MMFX MICROCOMPOSITE REINFORCING BARS

    E-Print Network [OSTI]

    DESIGN GUIDELINES FOR CONCRETE BEAMS REINFORCED WITH MMFX MICROCOMPOSITE REINFORCING BARS M. Dawood: Corrosion of steel reinforcement in concrete structures and bridges is a major problem facing for concrete beams and slabs. The behavior of concrete beams reinforced with MMFX reinforcing bars is evaluated

  13. Properties of concrete paving blocks made with waste marble Osman Gencela,f,*, Cengiz Ozelb

    E-Print Network [OSTI]

    North Texas, University of

    Properties of concrete paving blocks made with waste marble Osman Gencela,f,*, Cengiz Ozelb , Fuat: Concrete paving blocks Recycled aggregate Marble waste Concrete wear a b s t r a c t Marble industry. Waste marble is well usable instead of the usual aggregate in the concrete paving block production. Ã?

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

    E-Print Network [OSTI]

    Stadel, Alexander

    2013-01-01T23:59:59.000Z

    manufacturing and transportation of slag Portland cement concrete. Volatile matter (mostly from additives

  15. 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

  16. Predicting the Permeability of Pervious Concretes from Planar Images M.S. Sumanasooriya1

    E-Print Network [OSTI]

    Bentz, Dale P.

    -dimensional material structures. Introduction Pervious concrete (also called Enhanced Porosity Concrete, or porous1 Predicting the Permeability of Pervious Concretes from Planar Images M.S. Sumanasooriya1 , D-dimensional material structures of pervious concretes using two-dimensional digital images obtained from actual

  17. PROJECTED IMPACT OF SULFATE ATTACK ON THE LONG-TERM PERFORMANCE OF A CONCRETE REPOSITORY

    SciTech Connect (OSTI)

    Flach, G.

    2009-12-11T23:59:59.000Z

    Saltstone is a cementitious waste form made by mixing salt solution originating from liquid waste storage tanks at the DOE Savannah River Site with a dry mix containing blast furnace slag, fly ash, and cement or lime. The wet mix is poured into a concrete repository for on-site disposal. Solidified Saltstone is a dense, alkaline, reducing, micro-porous, monolithic, cementitious matrix, containing a solution of salts within its pore structure. Sodium sulfate concentrations in the pore fluid are around 0.15 mol/L, and external sulfate attack on concrete barriers is expected to occur over time. To predict the long-term performance of concrete repositories, the STADIUM{reg_sign} code was used to simulate the reactive transport processes leading to formation of ettringite, an expansive mineral phase often associated with spalling or cracking. STADIUM{reg_sign} is a multi-ionic transport model based on a split operator approach that separates ionic movement and chemical reactions. Ionic transport is described by the extended Nernst-Planck equation for unsaturated media, and accounts for electrical coupling between ionic species, chemical activity, transport due to water content gradient, and temperature effects. STADIUM{reg_sign} does not predict whether physical damage will occur, or the impact on transport properties should fracturing occur. Thus the presence of ettringite was assumed to coincide with physical damage for the purpose of estimating effective transport properties. Effective properties for concrete barriers were estimated assuming complete hydraulic failure behind the ettringite front and unaltered properties ahead of the front. The ettringite front advances at a rate dependent on the diffusion coefficient assumed for the failed zone. A sensitivity study indicates a service life ranging from thousands to tens of thousands of years, depending on the barrier thickness and sulfate exposure conditions among other factors.

  18. Effects of Microbial and Phosphate Amendments on the Bioavailability of Lead (Pb) in Shooting Range Soil

    SciTech Connect (OSTI)

    Brigmon, Robin; Wilson, Christina; Knox, Anna; Seaman, John; Smith, Garriet

    2005-06-16T23:59:59.000Z

    Heavy metals including lead (Pb) are released continually into the environment as a result of industrial, recreational, and military activities. Lead ranked number two on the CERCLA Priority List of Hazardous Substances and was identified as a major hazardous chemical found on 47% of USEPA's National Priorities List sites (Hettiarachchi and Pierzynski 2004). In-situ remediation of lead (Pb) contaminated soils may be accomplished by changing the soil chemistry and structure with the application of microbial and phosphate amendments. Soil contaminated with lead bullets was collected from the surface of the berm at Savannah River Site (SRS) Small Arms Training Academy (SATA) in Aiken, SC. While uncontaminated soils typically have Pb levels ranging from 2 to 200 mg/kg (Berti et al. 1998), previous analysis show Pb levels of the SATA berm to reach 8,673 mg/kg. Biosurfactants are surface-active compounds naturally produced by soil bacteria that can bind metals. Biosurfactants have a wide variety of chemical structures that reduce interfacial surface tensions (Jennings and Tanner 2000) and have demonstrated efficient metal complexion (Lin 1996). Biosurfactants also have the potential to change the availability of natural organic matter (Strong-Gunderson 1995). Two types of bacteria, Alcaligenes piechaudii and Pseudomonas putida, were employed as amendments based on their ability to produce biosurfactants and survive in metal-contaminated soils. Apatites (calcium phosphate compounds) are important in the formation of Pb phosphates. Pb phosphates form rapidly when phosphate is available and are the most stable environmental form of lead in soil (Ruby et al.1998). Pyromorphites in particular remain insoluble under a wide range of environmental conditions (Zhang et al. 1998). The three apatites evaluated in the current study were North Carolina apatite (NCA), Florida apatite (FA), and biological apatite (BA). BA is ground fish bone that has few impurities such as As, Cr, or U and contains about 27% total phosphate, most of which is available. FA and NCA are two types of rock phosphates that release small amounts of phosphate over time. Total phosphate is around 30% with only 1-2% phosphate available (Knox et al. 2005). In this study, we describe the influence of combining the two microbial and three phosphate amendments on reducing lead bioavailability in shooting range soil.

  19. Seismic rehabilitation of a reinforced concrete flat-slab structure 

    E-Print Network [OSTI]

    Jimenez, Laila Margarita

    1999-01-01T23:59:59.000Z

    The effectiveness of seismic rehabilitation techniques used to eliminate punching shear failures was assessed for flat-slab structural systems. This type of retrofit was evaluated for a four-story reinforced concrete (RC) ...

  20. Compressive strength of concrete and mortar containing fly ash

    DOE Patents [OSTI]

    Liskowitz, John W. (Belle Mead, NJ); Wecharatana, Methi (Parsippany, NJ); Jaturapitakkul, Chai (Bangkok, TH); Cerkanowicz, deceased, Anthony E. (late of Livingston, NJ)

    1997-01-01T23:59:59.000Z

    The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specifications required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs.

  1. Compressive strength of concrete and mortar containing fly ash

    DOE Patents [OSTI]

    Liskowitz, J.W.; Wecharatana, M.; Jaturapitakkul, C.; Cerkanowicz, A.E.

    1997-04-29T23:59:59.000Z

    The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specifications required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs. 33 figs.

  2. Compressive strength of concrete and mortar containing fly ash

    DOE Patents [OSTI]

    Liskowitz, John W. (Belle Mead, NJ); Wecharatana, Methi (Parsippany, NJ); Jaturapitakkul, Chai (Bangkok, TH); Cerkanowicz, deceased, Anthony E. (late of Livingston, NJ)

    1998-01-01T23:59:59.000Z

    The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specification required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs.

  3. Compressive strength of concrete and mortar containing fly ash

    DOE Patents [OSTI]

    Liskowitz, J.W.; Wecharatana, M.; Jaturapitakkul, C.; Cerkanowicz, A.E.

    1998-12-29T23:59:59.000Z

    The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specification required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs. 33 figs.

  4. Viscoelastic{Viscoplastic Damage Model for Asphalt Concrete

    E-Print Network [OSTI]

    Graham, Michael A.

    2010-10-12T23:59:59.000Z

    This thesis presents a continuum model for asphalt concrete incorporating non- linear viscoelasticity, viscoplasticity, mechanically-induced damage and moisture- induced damage. The Schapery single-integral viscoelastic model describes the nonlinear...

  5. Design of wind turbines with Ultra-High Performance Concrete

    E-Print Network [OSTI]

    Jammes, François-Xavier

    2009-01-01T23:59:59.000Z

    Ultra-High Performance Concrete (UHPC) has proven an asset for bridge design as it significantly reduces costs. However, UHPC has not been applied yet to wind turbine technology. Design codes do not propose any recommendations ...

  6. Roman Seawater Concrete Holds the Secret to Cutting Carbon Emissions

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

    of Roman concrete from harbor installations that have survived 2,000 years of chemical attack and wave action, "one of the most durable construction materials on the planet," says...

  7. The Influence of Travelling Fires on a Concrete Frame 

    E-Print Network [OSTI]

    Law, Angus; Stern-Gottfried, Jamie; Gillie, Martin; Rein, Guillermo

    2011-01-01T23:59:59.000Z

    . Current structural fire design methods do not account for these types of fires. This paper applies a novel methodology for defining a family of possible heating regimes to a framed concrete structure using the concept of travelling fires. A finite...

  8. Concrete Industry Benefits from Ancient Romans and the ALS

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

    saw for the first time how an extraordinarily stable compound called calcium-aluminum-silicate-hydrate (C-A-S-H) plays an integral role in the structure of Roman seawater concrete,...

  9. Concrete Masonry Wall Retrofit Systems for Blast Protection

    E-Print Network [OSTI]

    Johnson, Carol Faye

    2013-12-11T23:59:59.000Z

    unit (CMU) infill walls, commonly used in reinforced concrete or steel framed structures, are particularly vulnerable to blast loads. Facilities that incorporate CMU walls must either be hardened or retrofitted for explosive events. Conventional...

  10. Natural fiber reinforced aerated concrete : an experimental investigation

    E-Print Network [OSTI]

    Garbis, Leonidia Maria

    2013-01-01T23:59:59.000Z

    The purpose of this study is to compare existing research with aerated concrete and fiber reinforcement to original experiments completed investigating the benefits of adding natural fiber tensile reinforcement to aerated ...

  11. asphalt concrete performance: Topics by E-print Network

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

    Robert L. 2014-01-01 23 Establishing material properties for thin asphalt concrete surfaces on granular bases Texas A&M University - TxSpace Summary: of MASTER OF SCIENCE...

  12. Life cycle assessment of concrete pavements : impacts and opportunities

    E-Print Network [OSTI]

    Loijos, Alex (Alexander Nikos)

    2011-01-01T23:59:59.000Z

    The concrete pavement network in the United States plays a crucial role in the economy by enabling the transport of people and goods, but it also leads to resource consumption and environmental impacts. This thesis is ...

  13. Speciation and bioavailability of zinc in amended sediments

    SciTech Connect (OSTI)

    Williams, Aaron G.B.; Scheckel, Kirk G.; McDermott, Gregory; Gratson, David; Neptune, Dean; Ryan, James A.

    2011-12-09T23:59:59.000Z

    The speciation and bioavailability of zinc (Zn) in smelter-contaminated sediments were investigated as a function of phosphate (apatite) and organic amendment loading rate. Zinc species identified in preamendment sediment were zinc hydroxide-like phases, sphalerite, and zinc sorbed to an iron oxide via X-ray adsorption near edge structure (XANES) spectroscopy. Four months after adding the amendments to the contaminated sediment, hopeite, a Zn phosphate mineral, was identified indicating phosphate was binding and sequestering available Zn and Zn pore water concentrations were decreased at levels of 90% or more. Laboratory experiments indicate organic amendments exhibit a limited effect and may hinder sequestration of pore water Zn when mixed with apatite. The acute toxicity of the sediment Zn was evaluated with Hyalella azteca, and bioaccumulation of Zn with Lumbriculus variegates. The survivability of H. azteca increased as a function of phosphate (apatite) loading rate. In contaminated sediment without apatite, no specimens of H. azteca survived. The bioaccumulation of Zn in L. variegates also followed a trend of decreased bioaccumulation with increased phosphate loading in the contaminated sediment. The research supports an association between Zn speciation and bioavailability.

  14. Development of polymer concrete vaults for natural gas regulator stations

    SciTech Connect (OSTI)

    Fontana, J.J.; Miller, C.A.; Reams, W.; Elling, D.

    1990-08-01T23:59:59.000Z

    Vaults for natural gas regulator stations have traditionally been fabricated with steel-reinforced portland cement concrete. Since these vaults are installed below ground level, they are usually coated with a water-proofing material to prevent the ingress of moisture into the vault. In some cases, penetrations for piping that are normally cast into the vault do not line up with the gas lines in the streets. This necessitates off-setting the lines to line up with the penetrations in the vault or breaking out new penetrations which could weaken the structure and/or allow water ingress. By casting the vaults using a new material of construction such as polymer concrete, a longer maintenance free service life is possible because the physical and durability properties of polymer concrete composites are much superior to those of portland cement concrete. The higher strengths of polymer concrete allow the design engineer to reduce the wall, floor, and ceiling thicknesses making the vaults lighter for easier transportation and installation. Penetrations can be cut after casting to match existing street lines, thus making the vault more universal and reducing the number of vaults that are normally in stock. The authors developed a steel-fiber reinforced polymer concrete composite that could be used for regulator vaults. Based on the physical properties of his new composite, vaults were designed to replace the BUG PV-008 and Con Ed GR-6 regulator vaults made of reinforced portland cement concrete. Quarter-scale models of the polymer concrete vaults were tested and the results reaffirmed the reduced wall thickness design. Two sets of vaults, cast by Hardinge Bros., were inspected by representatives of the utilities and BNL (Brookhaven National Laboratory), and were accepted for delivery. 6 refs., 5 figs., 12 tabs.

  15. Systems building of short span precast concrete bridges

    E-Print Network [OSTI]

    Steele, Marvin

    1975-01-01T23:59:59.000Z

    SYSTEMS BUILDING OF SHORT SPAN PRECAST CONCRETE BRIDGES A Thesis by MARVIN STEELE Submitted to the Graduate College of Texas AIIM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1975 Major... Subject: Civil Engineering SYSTEMS BUILDING OF SHORT SPAN PRECAST CONCRETE BRIDGES A Thesis by MARVIN STEELE Aoproved as to style and content by: (Chairman of Committee) (Head of Department ( mber) fi (Member) May 1975 ABSTRACT Systems Building...

  16. Hydrogen production during fragmented debris/concrete interactions. [PWR; BWR

    SciTech Connect (OSTI)

    Tarbell, W.W.; Blose, R.E.

    1982-01-01T23:59:59.000Z

    In the unlikely event that molten core debris escapes the reactor pressure vessel, the interactions of the debris with concrete and structural materials become the driving forces for severe accident phenomena. The Ex-vessel Core Debris Interactions Program at Sandia Laboratories is a research effort to characterize the nature of these interactions and the magnitude of safety-related phenomena such as hydrogen generation, aerosol production, and fission product release that arise because of the melt/concrete interactions.

  17. Nonlinear behavior of reinforced concrete structures subjected to ground motion

    E-Print Network [OSTI]

    Abraham, Moises Alberto

    1991-01-01T23:59:59.000Z

    NONLINEAR BEHAVIOR OF REINFORCED CONCRETE STRUCTURES SUBJECTED TO GROUND MOTION A Thesis by MOISES ALBERTO ABRAHAM Submitted to the Office of Graduate Studies of Texas A 5 M U ni vers i ty in partial fulfillment of the requirement I...' or the degree of MASTER OF SCIENCE May 1991 Major Subject: Civil Engineering NONLINEAR BEHAVIOR OF REINFORCED CONCRETE STRUCTURES SUBJECTED TO GROUND MOTION A Thesis by MOISES ALBERTO ABRAHAM Approved as to style and content by: James . organ (Chair...

  18. Water permeability and microstructure of three old concretes

    SciTech Connect (OSTI)

    Hearn, N.; Detwiler, R.J.; Sframeli, C. (Univ. of Toronto, Ontario (Canada). Dept. of Civil Engineering)

    1994-01-01T23:59:59.000Z

    Measurement of the permeability of concrete to water is complicated by the self-sealing phenomenon, the progressive reduction of flow during the test. Many researchers have attributed self sealing to the hydration of previously unreacted cement on exposure to water. This paper describes permeability tests on concretes continuously hydrated for 26 years. Backscattered electron images show that virtually no unhydrated cement remains in these specimens, yet they exhibit self-sealing behavior.

  19. Investigation for determining the curing characteristics of lightweight aggregate concrete

    E-Print Network [OSTI]

    Carlton, Thomas Arlis

    1955-01-01T23:59:59.000Z

    desired gradatiani This burning produces an inert ~ highly porous material that will no longer soften in water gntil after World Mar II ~ the principal use of lightweight aggre- gates was in the manufacture of lightweight aoncrete building bloaks... or not the method of curing is of equal, lesser, or greater inportance for concrete made with lightweight aggregates ~ The prime need for curing concrete is to prevent the loss of water neoessary ta complete the hydratfen process in the os?cent The general...

  20. Study on concrete cask storage of spent fuel in Japan

    SciTech Connect (OSTI)

    Itoh, C. [Central Research Inst. of Electric Power Industry, Abiko, Chiba (Japan). Nuclear Fuel Cycle Dept.; Onodera, A.; Yamada, N. [Hitachi Zosen Corp., Tokyo (Japan). Nuclear Div.

    1993-12-31T23:59:59.000Z

    The present report describes the status of the first year`s work of a five-year-long study on concrete cask storage of spent fuel in Japan. Firstly, the proposed study program is elaborated to clarify the position of the present work. Then, the results of the study which have been obtained so far are described and the technical issues are addressed to make the concrete cask storage viable in Japan.

  1. Laboratory-scale sodium-carbonate aggregate concrete interactions. [LMFBR

    SciTech Connect (OSTI)

    Westrich, H.R.; Stockman, H.W.; Suo-Anttila, A.

    1983-09-01T23:59:59.000Z

    A series of laboratory-scale experiments was made at 600/sup 0/C to identify the important heat-producing chemical reactions between sodium and carbonate aggregate concretes. Reactions between sodium and carbonate aggregate were found to be responsible for the bulk of heat production in sodium-concrete tests. Exothermic reactions were initiated at 580+-30/sup 0/C for limestone and dolostone aggregates as well as for hydrated limestone concrete, and at 540+-10/sup 0/C for dehydrated limestone concrete, but were ill-defined for dolostone concrete. Major reaction products included CaO, MgO, Na/sub 2/CO/sub 3/, Na/sub 2/O, NaOH, and elemental carbon. Sodium hydroxide, which forms when water is released from cement phases, causes slow erosion of the concrete with little heat production. The time-temperature profiles of these experiments have been modeled with a simplified version of the SLAM computer code, which has allowed derivation of chemical reaction rate coefficients.

  2. EIS-0403: EPA Amended Notice of Availability of the Draft Programmatic...

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

    Comment Period) EIS-0403: EPA Amended Notice of Availability of the Draft Programmatic Environmental Impact Statement (Extension of Public Comment Period) Solar Energy...

  3. EIS-0407: Amended Notice of Intent to Modify the Scope of the...

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

    Notice of Intent to Modify the Scope of the Environmental Impact Statement Abengoa Refinery Project near Hugoton, Kansas Amended Notice of Intent to Modify the Scope of the...

  4. File:App Commercial Leases and Easements or Amendment or Residential...

    Open Energy Info (EERE)

    App Commercial Leases and Easements or Amendment or Residential Coastal Easements HOA.pdf Jump to: navigation, search File File history File usage Metadata File:App Commercial...

  5. Microsoft Word - Agreement to amend 1-13-09 electronic signature...

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

    to implement the amendment and avoid, if possible, any unnecessary interruption of smelter operations, especially given the difficult economic times and potential loss of...

  6. VIII International Conference on Fracture Mechanics of Concrete and Concrete Structures C. Boulay, S. Staquet, M. Azenha, A. Deraemaeker, M. Crespini, J. Carette, J. Granja, B. Delsaute, C. Dumoulin, G. Karaiskos

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of concrete, Young's modulus, round robin test, dynamic testing, ultrasonic measurements Abstract: Early age static tests at the time of the concrete setting. This difference decreases as the concrete hardens. 1VIII International Conference on Fracture Mechanics of Concrete and Concrete Structures FraMCoS-8 C

  7. Evaluation of aged concrete structures for continued service in nuclear power plants

    SciTech Connect (OSTI)

    Naus, D.J.; Marchbanks, M.F.; Arndt, E.G.

    1988-01-01T23:59:59.000Z

    Results are summarized of a study on concrete component aging and its significance relative to continued service of nuclear power plants (NPPs) beyond the initial period for which they were granted operating licenses. Progress is presented of a second study being conducted to identify and provide acceptance criteria for structural safety issues which the USNRC staff will need to address when applications are submitted for continued service of NPPs. Major activities under this program include: development of a materials property data base, establishment of structural component assessment and repair procedures, and development of a methodology for determination of structural reliability. 19 refs., 5 figs., 3 tabs.

  8. Evaluation of aged concrete structures for continued service in nuclear power plants

    SciTech Connect (OSTI)

    Naus, D.J.; Marchbanks, M.F.; Arndt, E.G.

    1988-01-01T23:59:59.000Z

    Results are summarized of a study on concrete component aging and its significance relative to continued service of nuclear power plants (NPPs) beyond the initial period for which they were granted operating licenses. Progress is presented of a second study being conducted to identify and provide acceptance criteria for structural safety issues which the USNRC staff will need to address when applications are submitted for continued service of NPPs. Major activities under this program include: development of a materials property data base, establishment of structural component assessment and repair procedures, and development of a methodology for determination of structural reliability.

  9. Assessment of FRP composite strengthened reinforced concrete bridge structures at the component and systems level through progressive damage and Non-Destructive Evaluation (NDE)

    E-Print Network [OSTI]

    Ghosh, Kumar Kanti

    2006-01-01T23:59:59.000Z

    as obtained from testing of the concrete used in the testTesting Techniques for FRP Rehabilitated Concrete: I – ATesting Techniques for FRP Rehabilitated Concrete: II –

  10. Eligibility Conditions for Project Associates - Amendments to the Management's proposals concerning project associates approved by the Finance Committee and the Council in June 1994 - Amendment to Document CERN/2048 (Annex)

    E-Print Network [OSTI]

    1996-01-01T23:59:59.000Z

    Eligibility Conditions for Project Associates - Amendments to the Management's proposals concerning project associates approved by the Finance Committee and the Council in June 1994 - Amendment to Document CERN/2048 (Annex)

  11. Achieving "Green" Concrete Through The Use Of High Performance FiberThe Use Of High Performance Fiber

    E-Print Network [OSTI]

    Chao, Shih-Ho

    Achieving "Green" Concrete Through The Use Of High Performance FiberThe Use Of High Performance Fiber Reinforced Concrete ShihShih--Ho Chao,Ho Chao, Ph.DPh.D Assistant Professor, Department of Civil, 2008 #12;What is D rable Concrete?What is D rable Concrete?What is Durable Concrete?What is Durable

  12. Radionuclide Migration through Sediment and Concrete: 16 Years of Investigations

    SciTech Connect (OSTI)

    Golovich, Elizabeth C.; Mattigod, Shas V.; Snyder, Michelle MV; Powers, Laura; Whyatt, Greg A.; Wellman, Dawn M.

    2014-11-06T23:59:59.000Z

    The Waste Management Project provides safe, compliant, and cost-effective waste management services for the Hanford Site and the U.S. Department of Energy (DOE) complex. Part of these services includes safe disposal of low-level waste and mixed low-level waste at the Hanford Low-Level Waste Burial Grounds in accordance with the requirements of DOE Order 435.1, Radioactive Waste Management. To partially satisfy these requirements, performance assessment analyses were completed and approved. DOE Order 435.1 also requires continuing data collection to increase confidence in the critical assumptions used in these analyses to characterize the operational features of the disposal facility that are relied on to satisfy the performance objectives identified in the order. Cement-based solidification and stabilization is considered for hazardous waste disposal because it is easily done and cost-efficient. One critical assumption is that concrete will be used as a waste form or container material at the Hanford Site to control and minimize the release of radionuclide constituents in waste into the surrounding environment. Concrete encasement would contain and isolate the waste packages from the hydrologic environment and act as an intrusion barrier. Any failure of concrete encasement may result in water intrusion and consequent mobilization of radionuclides from the waste packages. The radionuclides iodine-129, selenium-75, technetium-99, and uranium-238 have been identified as long-term dose contributors (Mann et al. 2001; Wood et al. 1995). Because of their anionic nature in aqueous solutions, these constituents of potential concern may be released from the encased concrete by mass flow and/or diffusion and migrate into the surrounding subsurface environment (Serne et al. 1989; 1992; 1993a, b; 1995). Therefore, it is necessary to assess the performance of the concrete encasement structure and the ability of the surrounding soil to retard radionuclide migration. Each of the test methods performed throughout the lifetime of the project has focused on different aspects of the concrete waste form weathering process. Diffusion of different analytes [technetium-99 (Tc-99), iodine-125 (I-125), stable iodine (I), uranium (U), and rhenium (Re)] has been quantified from experiments under both saturated and unsaturated conditions. The water-saturated conditions provide a conservative estimate of the concrete’s performance in situ, and the unsaturated conditions provide a more accurate estimate of the diffusion of contaminants from the concrete.

  13. Environmental Assessment/Regulatory Impact Review AMENDMENT 45 TO THE FISHERY MANAGEMENT PLAN

    E-Print Network [OSTI]

    Environmental Assessment/Regulatory Impact Review FOR AMENDMENT 45 TO THE FISHERY MANAGEMENT PLAN it would conflict with the Bering Sea non-roe season. At its January 1996 meeting, the Council considered/C Regulatory Areas must be made. Amendment 19 to the FMP, implemented as a measure to prevent roe stripping

  14. Nondestructive detection and characterization of carbonation in concrete

    SciTech Connect (OSTI)

    Kim, Gun; In, Chi-Won; Kurtis, Kimberly E. [Georgia Institute of Technology, School of Civil and Environmental Engineering (United States); Kim, Jin-Yeon [Georgia Institute of Technology, GW Woodruff School of Mechanical Engineering (United States); Jacobs, Laurence J. [Georgia Institute of Technology, School of Civil and Environmental Engineering and Georgia Institute of Technology, GW Woodruff School of Mechanical Engineering (United States)

    2014-02-18T23:59:59.000Z

    Exposure of concrete to the environment leads to changes in composition, microstructure, and properties; these effects often start from the surface of a concrete structure. A specific, widespread environmental effect is carbonation, where carbon dioxide penetrates the surface of concrete and reacts with calcium hydroxide that is a product of Portland cement hydration in concrete. Carbonation is of interest not only because it can lead to the initiation of reinforcement corrosion, but also carbon is increasingly used during curing to alter the surface properties of cement-based materials as a method to 'sink' carbon in cement-based materials. Nonlinear Rayleigh surface wave measurements are performed on uncarbonated and carbonated concrete samples to assess any mechanical changes induced by carbonation,. In order to minimize the effects of contact conditions, the generated signals are detected by a noncontact air-coupled transducer (100 kHz) at locations along the propagation axis. The nonlinearity parameter, ? is used to quantitatively characterize the degree of carbonation. To more accurately analyze the data, corrections are made for the effects of attenuation and diffraction. A comparison between the carbonated and uncarbonated samples demonstrates that pores and micro-cracks are affected by the carbonation product and these significantly change the measured nonlinearity parameter.

  15. Subsurface Biogeochemical Heterogeneity (Field-scale removal of U(VI) from groundwater in an alluvial aquifer by electron donor amendment)

    SciTech Connect (OSTI)

    Long, Philip E.; Derek R. Lovley; A. L. N’Guessan; Kelly Nevin; C. T. Resch; Evan Arntzen; Jenny Druhan; Aaron Peacock; Brett Baldwin; Dick Dayvault; Dawn Holmes; Ken Williams; Susan Hubbard; Steve Yabusaki; Yilin Fang; D.C. White; John Komlos; Peter Jaffe

    2006-06-01T23:59:59.000Z

    Determine if biostimulation of alluvial aquifers by electron donor amendment can effectively remove U(VI) from groundwater at the field scale. Uranium contamination in groundwater is a significant problem at several DOE sites. In this project, the possibility of accelerating bioreduction of U(VI) to U(IV) as a means of decreasing U(VI) concentrations in groundwater is directly addressed by conducting a series of field-scale experiments. Scientific goals include demonstrating the quantitative linkage between microbial activity and U loss from groundwater and relating the dominant terminal electron accepting processes to the rate of U loss. The project is currently focused on understanding the mechanisms for unexpected long-term ({approx}2 years) removal of U after stopping electron donor amendment. Results obtained in the project successfully position DOE and others to apply biostimulation broadly to U contamination in alluvial aquifers.

  16. On amending the Maskin's sufficiency theorem by using complex numbers

    E-Print Network [OSTI]

    Haoyang Wu

    2012-04-17T23:59:59.000Z

    The Maskin's theorem is a fundamental work in the theory of mechanism design. In this paper, we will propose a self-enforcing agreement by which agents can fight a bad social choice rule which satisfies monotonicity and no-veto if an additional condition is satisfied. The agreement is based on complex numbers and is justified if the designer receives messages from the agents through some communication channels (e.g., Internet). Under the assumption of complete information among agents, the designer cannot prevent the agents from signing such agreement. Thereby, the Maskin's sufficiency theorem is amended.

  17. EIS-0310: Amended Record of Decision | 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 DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of98-F,-SA-01: SupplementDraftDepartmentRecord ofAmended Record of

  18. NEPA Determination: LM-05-12 Amendment | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of theTechno-economicOctober 2013 -Department of5-12 Amendment

  19. EIS-0277: Amendment to Record of Decision | 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 DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of98-F, Western22,EERE:8: Supplement4: Record ofAmendment to Record

  20. AME:NDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved: 5-13-14Russianvolunteer | National011-03-2010 1 PAGE 1 D-24AME:NDMENT

  1. L AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

    National Nuclear Security Administration (NNSA)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:Administration SandiaAdministration News |Jordan ||L _ AMENDMENT

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

    E-Print Network [OSTI]

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

    2008-01-01T23:59:59.000Z

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

  3. Concrete Cleaning, Inc. centrifugal shot blaster: Baseline report; Summary

    SciTech Connect (OSTI)

    NONE

    1997-07-31T23:59:59.000Z

    The centrifugal shot blaster is an electronically operated shot-blast machine that removes layer of concrete of varying depths. Hardened steel shot propelled at a high rate of speed abrades the surface of the concrete. The depth of material removed is determined by the rate of speed the machine is traveling and the volume of shot being fired into the blast chamber. The steel shot is reused until it is pulverized to dust, which is deposited in the waste container with the concrete being removed. Debris is continually vacuumed by a large dust collection system attached to the shot blaster. The safety and health evaluation during the human factors assessment focused on two main areas: noise and dust.

  4. Analysis of coupled transport phenomena in concrete at elevated temperatures

    E-Print Network [OSTI]

    Beneš, Michal; Zeman, Jan

    2010-01-01T23:59:59.000Z

    In this paper, we study a non-linear numerical scheme arising from the implicit time discretization of the Ba\\v{z}ant-Thonguthai model for hygro-thermal behavior of concrete at high temperatures. Existence and uniqueness of the time-discrete solution in two dimensions is established using the theory of pseudomonotone operators in Banach spaces. Next, the spatial discretization is accomplished by the conforming finite element method. An illustrative numerical example shows that the numerical model reproduces well the rapid increase of pore pressure in wet concrete due to extreme heating. Such phenomenon is of particular interest for the safety assessment of concrete structures prone to thermally-induced spalling.

  5. Survey of four damage models for concrete.

    SciTech Connect (OSTI)

    Leelavanichkul, Seubpong (University of Utah, Salt Lake City, UT); Brannon, Rebecca Moss (University of Utah, Salt Lake City, UT)

    2009-08-01T23:59:59.000Z

    Four conventional damage plasticity models for concrete, the Karagozian and Case model (K&C), the Riedel-Hiermaier-Thoma model (RHT), the Brannon-Fossum model (BF1), and the Continuous Surface Cap Model (CSCM) are compared. The K&C and RHT models have been used in commercial finite element programs many years, whereas the BF1 and CSCM models are relatively new. All four models are essentially isotropic plasticity models for which 'plasticity' is regarded as any form of inelasticity. All of the models support nonlinear elasticity, but with different formulations. All four models employ three shear strength surfaces. The 'yield surface' bounds an evolving set of elastically obtainable stress states. The 'limit surface' bounds stress states that can be reached by any means (elastic or plastic). To model softening, it is recognized that some stress states might be reached once, but, because of irreversible damage, might not be achievable again. In other words, softening is the process of collapse of the limit surface, ultimately down to a final 'residual surface' for fully failed material. The four models being compared differ in their softening evolution equations, as well as in their equations used to degrade the elastic stiffness. For all four models, the strength surfaces are cast in stress space. For all four models, it is recognized that scale effects are important for softening, but the models differ significantly in their approaches. The K&C documentation, for example, mentions that a particular material parameter affecting the damage evolution rate must be set by the user according to the mesh size to preserve energy to failure. Similarly, the BF1 model presumes that all material parameters are set to values appropriate to the scale of the element, and automated assignment of scale-appropriate values is available only through an enhanced implementation of BF1 (called BFS) that regards scale effects to be coupled to statistical variability of material properties. The RHT model appears to similarly support optional uncertainty and automated settings for scale-dependent material parameters. The K&C, RHT, and CSCM models support rate dependence by allowing the strength to be a function of strain rate, whereas the BF1 model uses Duvaut-Lion viscoplasticity theory to give a smoother prediction of transient effects. During softening, all four models require a certain amount of strain to develop before allowing significant damage accumulation. For the K&C, RHT, and CSCM models, the strain-to-failure is tied to fracture energy release, whereas a similar effect is achieved indirectly in the BF1 model by a time-based criterion that is tied to crack propagation speed.

  6. Time-resolved diagnostics for concrete target response

    SciTech Connect (OSTI)

    Baum, D.W.; Kuklo, R.M.; Reaugh, J.E.; Simonson, S.C.

    1996-05-01T23:59:59.000Z

    In order to facilitate the design of advanced penetrating weapons for defeating land targets, the interaction of concrete with high-velocity penetrators needs to be better characterized. To aid in this effort, three new types of time-resolved diagnostics are being developed and have been used in two experiments and one demonstration: fiber optic arrays to localize penetrators in space and time, Fabry-Perot velocimetry to record the concrete particle velocity, which is related to the pressure, at specific locations within concrete targets, and micropower impulse radar to provide a non-intrusive measure of the penetrator position-time history in a target. The two experiments used the fiber optic array and the Fabry-Perot velocimeter to diagnose the response of concrete to penetration by a Viper shaped charge jet. The results were analyzed using the CALE continuum mechanics simulation program, for which a preliminary model of the material properties of concrete was developed. The fiber optic arrays recorded the bow shock at locations 6.4 and 16.9 cm from the front surfaces. The Fabry-Perot velocimeter measured a free-surface velocity of 0.13 km/s at a distance of 3 cm and obliquity 70{degree} from the jet, which was moving at an interface velocity of 4.0 km/s at a depth of 29 cm. These values imply a pressure of about 6.6 kbar at that location. The demonstration used micropower impulse radar with a pulse repetition frequency of 0.25 MHz and a cell size of 30 ps to detect and record the motion of a metal penetrator simulant moving inside a cylindrical concrete target.

  7. High-performance, high-volume fly ash concrete

    SciTech Connect (OSTI)

    NONE

    2008-01-15T23:59:59.000Z

    This booklet offers the construction professional an in-depth description of the use of high-volume fly ash in concrete. Emphasis is placed on the need for increased utilization of coal-fired power plant byproducts in lieu of Portland cement materials to eliminate increased CO{sub 2} emissions during the production of cement. Also addressed is the dramatic increase in concrete performance with the use of 50+ percent fly ash volume. The booklet contains numerous color and black and white photos, charts of test results, mixtures and comparisons, and several HVFA case studies.

  8. Quick setting water-compatible furfuryl alcohol polymer concretes

    DOE Patents [OSTI]

    Sugama, Toshifumi (Ridge, NY); Kukacka, Lawrence E. (Port Jefferson, NY); Horn, William H. (Brookhaven, NY)

    1982-11-30T23:59:59.000Z

    A novel quick setting polymer concrete composite comprising a furfuryl alcohol monomer, an aggregate containing a maximum of 8% by weight water, and about 1-10% trichlorotoluene initiator and about 20-80% powdered metal salt promoter, such as zinc chloride, based on the weight of said monomer, to initiate and promote polymerization of said monomer in the presence of said aggregate, within 1 hour after mixing at a temperature of -20.degree. C. to 40.degree. C., to produce a polymer concrete having a 1 hour compressive strength greater than 2000 psi.

  9. The Thermal Conductivity of Low Density Concretes Containing Perlite 

    E-Print Network [OSTI]

    Yarbrough, D. W.

    1985-01-01T23:59:59.000Z

    -Tov, "HEATING5 - An IBM 360 Heat Conduction Program," ORNL/CSD/tm-15(1977). Oak Ridge National Laboratory, Oak Ridge, TN 37831. [5J Expanded Shale Clay and Slate Institute, "Lightweight Concrete Information Sheet," No.4, Washington, D.C., 1958. [6J Moore..., J. P., R. S. Graves, J. G. Stradley, J. H. Hannah, and D. L. McElroy, "Some Thermal Transport Properties of a Limestone Concrete," ORNL/TM-2644 (August 1969), Oak Ridge National Laboratory, Oak Ridge, TN 37831. [7J Valore, R. C., Jr., "Cellular...

  10. Evaluation of Economic Impact of Three-Dimensional Modeling in Precast Concrete Engineering

    E-Print Network [OSTI]

    Sacks, Rafael

    Evaluation of Economic Impact of Three-Dimensional Modeling in Precast Concrete Engineering Rafael (IT); Concrete, precast; Economic factors; Three-dimensional models. Introduction "The application to this; but the funda- mental reason undoubtedly was economic." (Mitchell 1977). Intuitive assessments

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

    E-Print Network [OSTI]

    Avelar Lezama, Ivan

    2007-04-25T23:59:59.000Z

    Moisture availability is a focal point in the structural development of young concrete. Under low humidity and hot weather conditions, concrete loses moisture rapidly as it hardens, and it is very difficult, if not impossible, ...

  12. Lightweight concrete : investigations into the production of variable density cellular materials

    E-Print Network [OSTI]

    Cooke, Timothy Graham

    2012-01-01T23:59:59.000Z

    This research focuses on the intersection between material composition and form in the development of a new type of concrete. As concrete is the most widely used building material in the world, innovation in this material ...

  13. Investigation of Conditions for Moisture Damage in Asphalt Concrete and Appropriate Laboratory Test Methods

    E-Print Network [OSTI]

    Lu, Qing

    2005-01-01T23:59:59.000Z

    of Asphalt Concrete-Physical Testing. ” Final Report, #930-of Asphalt Concrete: Chemical Testing. ” Alabama Highwayconcrete mixes, it is preferred to use a mix that would have good moisture resistance under laboratory testing

  14. Lateral behavior of reinforced concrete columns supported on Type II shafts

    E-Print Network [OSTI]

    Liu, Yujia

    2012-01-01T23:59:59.000Z

    concrete strength reached the desired strength on the day of testingconcrete and reinforcing steel during the construction period and on the day of column-shaft assembly testing.during testing. However, the cracking of the concrete at the

  15. Experimental and Analytical Investigation of Reinforced Concrete Columns Subjected to Horizontal and Vertical Ground Motions

    E-Print Network [OSTI]

    Lee, Hyerin

    2011-01-01T23:59:59.000Z

    errors in concrete sampling and testing these cylinders areprocedure for concrete cylinder making and testing. Cylinderconcrete stress-strain relationship on the 72 day (1 cylinder) 3.21 Testing

  16. Investigation of Conditions for Moisture Damage in Asphalt Concrete and Appropriate Laboratory Test Methods

    E-Print Network [OSTI]

    Harvey, John T; Lu, Qing

    2005-01-01T23:59:59.000Z

    of Asphalt Concrete-Physical Testing. ” Final Report no.of Asphalt Concrete: Chemical Testing. ” Alabama Highwayconcrete mixes, it is preferable to use a mix that would have good moisture resistance under laboratory testing

  17. Modeling the ASR Induced Strains and Cracking of Reinforced Concrete Beams

    E-Print Network [OSTI]

    Zhang, Li

    2013-05-17T23:59:59.000Z

    the number and spacing of cracks of a partly restrained reinforced concrete beam affected by ASR gels. The model is validated with recent experimental results on large scale reinforced concrete specimens. Predictions agree well with the observed number...

  18. Seismic vulnerability of older reinforced concrete frame structures in Mid-America

    E-Print Network [OSTI]

    Beason, Lauren Rae

    2004-09-30T23:59:59.000Z

    This research quantifies the seismic vulnerability of older reinforced concrete frame structures located in Mid-America. After designing a representative three-story gravity load designed reinforced concrete frame structure, a nonlinear analytical...

  19. Environmental, Economic, and Social Impacts of Concrete Pavement Material Choices: A Life-Cycle Assessment Approach

    E-Print Network [OSTI]

    Park, Hyunsoung

    2014-12-12T23:59:59.000Z

    Transportation Agencies (STAs) in rendering better-informed decisions for the concrete pavement material choices, the major research objective is to analyze the environmental, economic, and social impacts of the four concrete pavement alternatives from...

  20. Practical limitations of single-span ultra-high performance concrete beams

    E-Print Network [OSTI]

    Abrams, Daniel Scott

    2013-01-01T23:59:59.000Z

    Since its development in the early 1970's, researchers have continued to push the limits of concrete mixtures through the creation of ultra-high performance concretes. The use of this class of materials has allowed designers ...

  1. Tall concrete buildings subject to vertically moving fires: A case study approach 

    E-Print Network [OSTI]

    Fletcher, Ian A

    regarded as safe in a fire situation as concrete is non-flammable and exhibits highly insulating material properties. The majority of current research relating to the impact of fire on structures examines other forms of construction. Research of concrete...

  2. Effect of Corrosion on the Seismic Response of a Single-Bent, Reinforced Concrete Bridge

    E-Print Network [OSTI]

    Harvat, Jessica

    2010-07-14T23:59:59.000Z

    The effect of corrosion on a single-bent, reinforced concrete (RC) bridge subject to seismic loading is the primary focus of this research. This work attempts to determine the effects of decreasing rebar diameter and concrete cover spalling...

  3. The Effect of Elevated Temperature on Concrete Materials and Structures - a Literature Review.

    SciTech Connect (OSTI)

    Naus, Dan J [ORNL

    2006-03-01T23:59:59.000Z

    The objective of this limited study was to provide an overview of the effects of elevated temperature on the behavior of concrete materials and structures. In meeting this objective the effects of elevated temperatures on the properties of ordinary Portland cement concrete constituent materials and concretes are summarized. The effects of elevated temperature on high-strength concrete materials are noted and their performance compared to normal strength concretes. A review of concrete materials for elevated-temperature service is presented. Nuclear power plant and general civil engineering design codes are described. Design considerations and analytical techniques for evaluating the response of reinforced concrete structures to elevated-temperature conditions are presented. Pertinent studies in which reinforced concrete structural elements were subjected to elevated temperatures are described.

  4. The use of nondestructive testing methods for the condition assessment of concrete bridge girders

    E-Print Network [OSTI]

    Unruh, Richard Cornelius, 1974-

    2004-01-01T23:59:59.000Z

    There are over 594,000 publicly controlled bridges in the United States. Concrete and pre-stressed concrete bridges account for nearly 50% of the bridges in the US inventory. This proportion is increasing each year, as new ...

  5. Seismic fragility curves for reinforced concrete A Dissertation Submitted in Partial Fulfilment of the Requirements

    E-Print Network [OSTI]

    Seismic fragility curves for reinforced concrete buildings A Dissertation Submitted in Partial dissertation entitled "Seismic fragility curves for reinforced concrete frame and wall- frame buildings. Buildings designed for seismic loading, and buildings designed only for gravity loads, are considered

  6. Towards Prestressed Thin-Sheet Glass Concrete Products Gregor Vilkner and Christian Meyer

    E-Print Network [OSTI]

    Meyer, Christian

    Towards Prestressed Thin-Sheet Glass Concrete Products Gregor Vilkner and Christian Meyer SYNOPSIS, and concrete technology. Christian Meyer, FACI, is a Professor of Civil Engineering at Columbia University

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

    E-Print Network [OSTI]

    Hasanbeigi, Ali

    2013-01-01T23:59:59.000Z

    titanium dioxide nanoparticles for self-cleaning concrete surfaces Development of cement-based nanocomposites for various applications Energy/

  8. Design and Construction Integration of a Continuous Precast Prestressed Concrete Bridge System

    E-Print Network [OSTI]

    Roy, Subha Lakshmi 1982-

    2011-04-15T23:59:59.000Z

    NOMENCLATURE AASHTO American Association of State Highway Transportation Officials ACI American Concrete Institute AREMA American Railway Engineering and Maintenance-of-Way Association CIP Cast-in-place DAD Damage Avoidance Design Ec Concrete....1 State-of-the-art and Practice for Precast Concrete Deck Slabs Cast-in-place (CIP) reinforced concrete has been the most common form of bridge deck construction. The major disadvantage of CIP construction is the slow speed of construction. Since...

  9. Behavior of Concrete Piles Confined with CFRP Grid Lining Ding, Hatem. M. Seliem, Sami. H. Rizkalla,

    E-Print Network [OSTI]

    Behavior of Concrete Piles Confined with CFRP Grid Lining Ding, Hatem. M. Seliem, Sami. H. Rizkalla spirals to confine precast concrete piles. The research focuses on the effectiveness of the confinement of the specified C-Grid on the concrete core of piles. The experimental program consists of a total of seven short

  10. Peel and Shear Fracture Characterization of Debonding in FRP Plated Concrete Affected by Moisture

    E-Print Network [OSTI]

    Entekhabi, Dara

    polymer CFRP plated concrete systems by mechanically testing accelerated moisture conditioned mesoscalePeel and Shear Fracture Characterization of Debonding in FRP Plated Concrete Affected by Moisture fracture toughness as the quantification parameter of the CFRP-epoxy-concrete trilayer system, which

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

    E-Print Network [OSTI]

    Harms, Kyle E.

    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

  12. Disk-shaped Compact Tension Test for Plain Concrete A. Amirkhanian1

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Disk-shaped Compact Tension Test for Plain Concrete A. Amirkhanian1 , D. Spring1 , J. Roesler1 , K cracking prediction of concrete pavement systems. The single-edge notched beam test has been used energy in asphalt concrete using the disk-shaped compact tension (DCT) test. The benefit of this specimen

  13. Edinburgh Research Explorer The Dalmarnock Fire Tests on a Cast Insitu Concrete Structure

    E-Print Network [OSTI]

    Millar, Andrew J.

    Edinburgh Research Explorer The Dalmarnock Fire Tests on a Cast Insitu Concrete Structure Citation Fire Tests on a Cast Insitu Concrete Structure'. in Proceedings of the international Workshop Fire THE DALMARNOCK FIRE TESTS ON A CAST INSITU CONCRETE STRUCTURE Susan Deeny PhD Student University of Edinburgh, UK

  14. A testing technique for concrete under confinement at high rates of strain P. Forquin1,

    E-Print Network [OSTI]

    1 A testing technique for concrete under confinement at high rates of strain P. Forquin1, , F://lmsX.polytechnique.fr/LMSX/ Abstract: A testing device is presented for the experimental study of dynamic compaction of concrete under numerical simulations of tests involving a set of 4 different concrete-like behaviours and different

  15. FRP Dowels for Concrete Pavements Darren Eddie, Junior Structural Engineer, Reid Crowther & Partners;

    E-Print Network [OSTI]

    testing ofGFRP and steel dowels using a model of a concrete pavement slab joint subjected to static= L FRP Dowels for Concrete Pavements By Darren Eddie, Junior Structural Engineer, Reid Crowther - Introduction Joints are used in concrete pavements in order to control cracking due to thermal

  16. TEST ON PRESTRESSED CONCRETE BEAM WITH AFRP SPIRAL CONFINEMENT AND EXTERNAL ARAMID TENDONS

    E-Print Network [OSTI]

    Burgoyne, Chris

    TEST ON PRESTRESSED CONCRETE BEAM WITH AFRP SPIRAL CONFINEMENT AND EXTERNAL ARAMID TENDONS C. J of spiral confinement. Keywords: Prestressed Concrete, Aramid Fibre, Confinement, Beam, Testing 1 #12;Chris concrete beam. Aramid Fibre Reinforced Polymers (AFRP) are used to make compression confinement in the form

  17. Concrete international /DECEMBER 2004 33 BY EDWARD J. GARBOCZI, JEFFREY W. BULLARD, AND DALE P. BENTZ

    E-Print Network [OSTI]

    Bentz, Dale P.

    with virtual testing will result in tremendous time and cost savings to the cement and concrete industry of the National Institute of Standards and Technology (NIST)/Industry Virtual Cement and Concrete Testing's work follows, along with a general overview of what virtual testing of cement and concrete actually

  18. Application of digital image correlation to size effect tests of concrete S. Yasir Alam & A. Loukili

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Application of digital image correlation to size effect tests of concrete S. Yasir Alam & A beams. Three point bending tests are performed on scaled concrete beams in accordance with RILEM rec, reactor containments, bridges) and of labora- tory tests. In concrete structures, fracture is generally

  19. Laboratory Testing to Address the Potential for Damaging Hydraulic Pressure in the Concrete Tie Rail Seat

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    Laboratory Testing to Address the Potential for Damaging Hydraulic Pressure in the Concrete Tie of different combinations of concrete ties and fastening system components to RSD (1). TTC's tests resulted) is the most critical problem with concrete tie performance on North American freight railroads. Currently

  20. Fracture Behavior and Properties of Functionally Graded Fiber-Reinforced Concrete

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    the structural benefits of functionally graded concrete materials (FGCM) for rigid pavements by testing (testing and modeling) demonstrates the viability of FGCM for designing layered concrete pavements systemFracture Behavior and Properties of Functionally Graded Fiber-Reinforced Concrete Jeffery Roesler

  1. Monitoring of the creep and the relaxation hhh behaviour of concrete since setting time, hh hhhhhhhh

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    experimental tests on the same ordinary concrete in order to investigate the early age mechanical behaviour in the laboratory of civil engineering at ULB for testing concrete in tension or in compression since setting time), France (2012)" #12;2 2. Test setup 2.1. Tested concrete description The mixture proportions

  2. Keynote Paper, Shah, Page 1/13 HEALTH MONITORING OF EARLY AGE CONCRETE

    E-Print Network [OSTI]

    relationship to the actual concrete in the structure. This calls for nondestructive test methods that offer potential for the application of nondestructive testing of concrete under field conditions. The resultsKeynote Paper, Shah, Page 1/13 HEALTH MONITORING OF EARLY AGE CONCRETE Thomas Voigt, Zhihui Sun

  3. IDENTIFICATION OF INHOMOGENEOUS CONCRETE COVER BY NON-CONTACT ULTRASONIC METHOD

    E-Print Network [OSTI]

    Boyer, Edmond

    their irreversible damage. Various methods are available today for testing concrete structures. Among themIDENTIFICATION OF INHOMOGENEOUS CONCRETE COVER BY NON- CONTACT ULTRASONIC METHOD B.Piwakowski1 , Q Science, Kazimierz Wielki University, Bydgoszcz, Poland bogdan.piwakowski@ec-lille.fr ABSTRACT Concrete

  4. Non Destructive Testing of Concrete: Transfer from Laboratory to On-site Measurement

    E-Print Network [OSTI]

    Boyer, Edmond

    Non Destructive Testing of Concrete: Transfer from Laboratory to On-site Measurement Vincent Vincent.garnier@univ-amu.fr ABSTRACT The evaluation of mechanical and chemical properties of concrete laws from the laboratory between non-destructive measurements and characteristics of the concrete

  5. Virtual Cement and Concrete Testing Laboratory Educational Version 2.0 User Guide

    E-Print Network [OSTI]

    Magee, Joseph W.

    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

  6. PORTLAND CEMENT CONCRETE PAVEMENT FOR FLEXIBLE OVER RIGID COMPOSITE PAVEMENTS (Tollway)

    E-Print Network [OSTI]

    PORTLAND CEMENT CONCRETE PAVEMENT FOR FLEXIBLE OVER RIGID COMPOSITE PAVEMENTS (Tollway) Effective portland cement concrete for special applications to composite pavements as shown and described. Developing concrete mix design(s) that meets the performance requirements for the intended pavement; 4

  7. Concrete Pavement I-285 under 5th runway at Hartsfield Jackson

    E-Print Network [OSTI]

    Concrete Pavement Sweet as a James Page I-285 under 5th runway at Hartsfield Jackson International Concrete Paving project I-285 East Perimeter Fiscal 2012 GDOT placed 205,704 square yards of RCC Pavement Portland Cement Concrete Pavement State Route 96 Crawford / Peach Counties I-75 Tift County CRC Lane

  8. PRECAST REPLACEMENT OF CONCRETE PAVEMENT SLABS (Tollway) Effective: March 30, 2009

    E-Print Network [OSTI]

    PRECAST REPLACEMENT OF CONCRETE PAVEMENT SLABS (Tollway) Effective: March 30, 2009 Revised: October 19, 2012 DESCRIPTION. This work shall consist of the removal of existing concrete pavement, restoration of the subbase material, the installation of precast concrete pavement slabs in accordance

  9. An experimental evaluation of two effective medium theories for ultrasonic wave propagation in concrete

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in concrete Jean-François Chaix*, Mathieu Rossat, Vincent Garnier, Gilles Corneloup. Laboratoire de and experimental data in concrete. As a consequence of its composition and manufacturing process, this material has of longitudinal waves to be described at the scale of materials such as concrete. The validity limits

  10. Making the abstract concrete 1 Running head: VISUALIZING MATHEMATICAL SOLUTION PROCEDURES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Making the abstract concrete 1 Running head: VISUALIZING MATHEMATICAL SOLUTION PROCEDURES Making the Abstract Concrete: Visualizing Mathematical Solution Procedures Katharina Scheiter University of Tuebingen) (2006) 9-25" DOI : 10.1016/j.chb.2005.01.009 #12;Making the abstract concrete 2 Abstract This article

  11. E. F. Redish 1 DTS Proposal Learning the Language of Science: Advanced Math for Concrete Thinkers

    E-Print Network [OSTI]

    Maryland at College Park, University of

    E. F. Redish 1 DTS Proposal Learning the Language of Science: Advanced Math for Concrete Thinkers, differential equations, and Fourier transforms, many concrete thinkers find these topics to be insurmount- able to teach abstract math to concrete thinkers could have a broad impact beyond physics. Many fields

  12. Numerical determination of the tensile response and the dissipated fracture energy of concrete: role of the

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Numerical determination of the tensile response and the dissipated fracture energy of concrete concrete can be considered as a mix of coarse aggregates with a mortar paste matrix. In this paper we of concrete. Each coarse aggregate is assumed to be circular with six different radiuses following

  13. SERVICEABILITY OF CONCRETE BEAMS PRESTRESSED BY CARBON FffiRE REINFORCED PLASTIC .RODS

    E-Print Network [OSTI]

    SERVICEABILITY OF CONCRETE BEAMS PRESTRESSED BY CARBON FffiRE REINFORCED PLASTIC .RODS A of Manitoba to study the serviceability of concrete beams prestressed by carbon fibre reinforced plastic (CFRP) rods. The experimental program consisted of eight concrete beams prestressed by CFRP rods and two

  14. A continuum damage modelling of quasi-static fatigue strength of plain concrete

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A continuum damage modelling of quasi-static fatigue strength of plain concrete S. H. Maia,b , F of concrete. The approach is based on the framework of continuum damage mechanics where the fatigue model fatigue tests have been performed on a concrete the formulation of which is close to the one used

  15. The Role of Concrete Marine Structures in the Recovery of Energy and Natural Resources from the

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    The Role of Concrete Marine Structures in the Recovery of Energy and Natural Resources from Concrete materials are derived from some of the most abundant and economically available sources on this planet. Recent advancements in the development of concrete technology related to the durability, strength

  16. IMPACT OF ALTERNATIVE CEMENTITIOUS MATERIAL ON THE1 MECHANICAL AND TRANSFER PROPERTIES OF CONCRETE2

    E-Print Network [OSTI]

    OF CONCRETE2 3 Alexandre Pavoine, David Harbec, Thierry Chaussadent, Arezki Tagnit-Hamou and Loïc4 Divet5. The subject of his PhD thesis was the risk of development of Delayed9 Ettringite Formation in concretes. His research interests include durability of concrete and the10 development of alternative materials

  17. Running head: CONCRETE PROSOCIAL GOALS MAXIMIZE HAPPINESS 1 Getting the Most out of Giving

    E-Print Network [OSTI]

    Bogyo, Matthew

    Running head: CONCRETE PROSOCIAL GOALS MAXIMIZE HAPPINESS 1 Getting the Most out of Giving: Concretely Framing a Prosocial Goal Maximizes Happiness Melanie Rudda University of Houston Jennifer Aakerb Melcher Hall, Houston, TX 77204-6021; Email: mrrudd@bauer.uh.edu; Phone: 713.743.4572. #12;CONCRETE

  18. MODELLING OF CONCRETE STRUCTURES AFFECTED BY INTERNAL SWELLING REACTIONS: COUPLINGS BETWEEN

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Page 1 MODELLING OF CONCRETE STRUCTURES AFFECTED BY INTERNAL SWELLING REACTIONS: COUPLINGS BETWEEN of the affected concrete that generally leads to cracking and decrease of its mechanical properties of the concrete works and structural integrity. To manage with considered suffering structures, it is necessary

  19. ASSESSING A RECLAIMED CONCRETE UP-CYCLING SCHEME THROUGH LIFE-CYCLE ANALYSIS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ASSESSING A RECLAIMED CONCRETE UP-CYCLING SCHEME THROUGH LIFE-CYCLE ANALYSIS Sylvain Guignot1 Concrete, aggregate, electro-fragmentation, recycling, life-cycle analysis Abstract The present study evaluates the environmental impacts of a recycling scheme for gravels from building concretes wastes

  20. The influence of abstract and concrete mindsets on anticipating and guiding others' self-regulatory effortsq

    E-Print Network [OSTI]

    Freitas, Antonio L.

    The influence of abstract and concrete mindsets on anticipating and guiding others' self the impact of abstract and concrete mindsets on attention to goal-relevant aspects of others' situations. An abstract (relative to a concrete) mindset, by making accessible the cognitive operation of considering

  1. Linseed Oil-Based Concrete Surface Treatment -for Building and Highway Structures in

    E-Print Network [OSTI]

    , Linseed Oil-Based Concrete Surface Treatment -for Building and Highway Structures in Hong Kong Y using jour Canadian linseed oil- based sealants on concrete specimens madejrom G30120 and G45120 Keywords: Unseed Oil, Concrete Surface Treatment, Salt Spray Resistance, Carbonation, Bond Strength, Ultra

  2. A model for reactive porous transport during re-wetting of hardened concrete

    E-Print Network [OSTI]

    Stockie, John

    A model for reactive porous transport during re-wetting of hardened concrete Michael Chapwanya residing in the porous concrete matrix. The main hypothesis in this model is that the reaction product hydration; Porous media; Reaction-diffusion equations; Vari- able porosity. 1. Introduction Concrete

  3. A MOVING-BOUNDARY PROBLEM FOR CONCRETE CARBONATION: GLOBAL EXISTENCE AND UNIQUENESS OF

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    in a porous solid ­ concrete ­ which incorporates slow diffusive transport, interfacial exchange between wet of gaseous CO2 from the atmosphere penetrate the concrete via the unsaturated porous matrix. After enteringA MOVING-BOUNDARY PROBLEM FOR CONCRETE CARBONATION: GLOBAL EXISTENCE AND UNIQUENESS OF WEAK

  4. Concrete calcium leaching at variable temperature: experimental data and numerical model inverse

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , concrete porous solution is very basic (pH around 13) and several ionic species are highly concentrated [1Concrete calcium leaching at variable temperature: experimental data and numerical model inverse/DSU/SSIAD/BERIS, Fontenay-aux-Roses, France Abstract A simplified model for calcium leaching in concrete is presented

  5. Effect of Electric Arc Furnace Bag House Dust on Concrete Durability Researcher: Fahad Al-Mutlaq

    E-Print Network [OSTI]

    Birmingham, University of

    Effect of Electric Arc Furnace Bag House Dust on Concrete Durability Researcher: Fahad Al billions of dollars annually. While steel is normally protected from corrosion in concrete by a passive of the effects of addition of Bag House Dust (BHD) on aspects of concrete durability. BHD is a fine powder

  6. Effect of coating on the hygric performance of a hemp concrete wall Yacine At Oumziane 1

    E-Print Network [OSTI]

    Boyer, Edmond

    Effect of coating on the hygric performance of a hemp concrete wall Yacine Aït Ouméziane 1 , Sophie de Génie Mécanique, Rennes, France Keywords: building material, HAM modelling, hysteresis, hemp concrete, coating ABSTRACT Constructions built with environmentally friendly materials like hemp concrete

  7. Waste to Energy Time Activities

    E-Print Network [OSTI]

    SEMINAR Waste to Energy Time Activities 9:30-9:40 Brief introduction of participants 9:40-10:10 Presentation of Dr. Kalogirou, "Waste to Energy: An Integral Part of Worldwide Sustainable Waste Management" 10. Sofia Bethanis, "Production of synthetic aggregates for use in structural concrete from waste to energy

  8. Pentek concrete scabbling system: Baseline report; Greenbook (chapter)

    SciTech Connect (OSTI)

    NONE

    1997-07-31T23:59:59.000Z

    The Pentek scabbling technology was tested at Florida International University (FIU) and is being evaluated as a baseline technology. This report evaluates it for safety and health issues. It is a commercially available technology and has been used for various projects at locations throughout the country. The Pentek concrete scabbling system consisted of the MOOSE, SQUIRREL-I, and SQUIRREL-III scabblers. The scabblers are designed to scarify concrete floors and slabs using cross-section, tungsten carbide tipped bits. The bits are designed to remove concrete in 318 inch increments. The bits are either 9-tooth or demolition type. The scabblers are used with a vacuum system designed to collect and filter the concrete dust and contamination that is removed from the surface. The safety and health evaluation conducted during the testing demonstration focused on two main areas of exposure: dust and noise. Dust exposure was minimal, but noise exposure was significant. Further testing for each of these exposures is recommended. Because of the outdoor environment where the testing demonstration took place, results may be inaccurate. It is feasible that the dust and noise levels will be higher in an enclosed operating environment. Other areas of concern were arm-hand vibration, whole-body vibration, ergonomics, heat stress, tripping hazards, electrical hazards, machine guarding, and lockout/tagout.

  9. Permeable Interlocking Concrete Pavement (PICP) for Stormwater Management

    E-Print Network [OSTI]

    Permeable Interlocking Concrete Pavement (PICP) for Stormwater Management Benefits and Uses · Potential for Extended Pavement Life Due to Well Drained Base and Reduced Freeze-Thaw · No curing time Cost Can Be Comparable for PICP with Reduced Stormwater Infrastructure VS. Standard Pavement

  10. Research in nondestructive evaluation techniques for nuclear reactor concrete structures

    SciTech Connect (OSTI)

    Clayton, Dwight; Smith, Cyrus [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831 (United States)

    2014-02-18T23:59:59.000Z

    The purpose of the Materials Aging and Degradation (MAaD) Pathway of the Department of Energy's Light Water Reactor Sustainability (LWRS) Program is to develop the scientific basis for understanding and predicting longterm environmental degradation behavior of material in nuclear power plants and to provide data and methods to assess the performance of systems, structures, and components (SSCs) essential to safe and sustained nuclear power plant operations. The understanding of aging-related phenomena and their impacts on SSCs is expected to be a significant issue for any nuclear power plant planning for long-term operations (i.e. service beyond the initial license renewal period). Management of those phenomena and their impacts during long-term operations can be better enable by improved methods and techniques for detection, monitoring, and prediction of SSC degradation. The MAaD Pathway R and D Roadmap for Concrete, 'Light Water Reactor Sustainability Nondestructive Evaluation for Concrete Research and Development Roadmap', focused initial research efforts on understanding the recent concrete issues at nuclear power plants and identifying the availability of concrete samples for NDE techniques evaluation and testing. [1] An overview of the research performed by ORNL in these two areas is presented here.

  11. Concrete Company Aims Higher for More Wind Energy

    Broader source: Energy.gov [DOE]

    Today, most steel towers that support utility-scale turbines stand about 80 meters tall, but the Tindall Corporation wants to go higher using precast concrete to raise turbines over 100 meters in height to capture stronger, steadier winds - and more energy.

  12. Salt Frost Deterioration in Concrete Pavement --Causes and Mitigation

    E-Print Network [OSTI]

    Salt Frost Deterioration in Concrete Pavement --Causes and Mitigation Zhichao Liu, Will Hansen and special effects such as surface tension and osmotic effect (salt solution). ·Below the nucleation the surface contains a salt solution, pore suction attracts surface liquid and additional ice growth may

  13. Concrete Structure Design Using Mixed-Integer Nonlinear ...

    E-Print Network [OSTI]

    2009-11-24T23:59:59.000Z

    Nov 24, 2009 ... we find an average cost savings over typical-practice design ... The demand on the RC elements in terms of displacements and forces depends on ... forces provided by the concrete, elastic-perfectly plastic material response ...... function values to find the best locally optimal solution, we use only the initial ...

  14. Light weight concrete: 226 K contents and dose

    E-Print Network [OSTI]

    Yu, K.N.

    gamma spectrometry. All the radionuclide contents except those for the PFA autoclave aerated concrete been determined using high- resolution gamma spectrometry. The results have been compared with thoseÀ1 for construction materials for dwellings. The gamma-dose rate for an indoor environment

  15. Concrete Strength Data 1 0.45 2954

    E-Print Network [OSTI]

    Vardeman, Stephen B.

    .5 2739 7 0.55 2652 8 0.55 2607 9 0.55 2583 0 #12;Response: Concrete Compressive Strength Summary of Fit.963004 26.75521 2765.889 9 Lack of Fit Source Lack of Fit Pure Error Total Error DF 1 6 7 Sum of Squares 672>F Press 8682.2673817 x 2 #12;

  16. NDE of Concrete Structures Strengthened with FRP Using Infrared Thermography

    E-Print Network [OSTI]

    Entekhabi, Dara

    NDE of Concrete Structures Strengthened with FRP Using Infrared Thermography Monica A. STARNES the effectiveness of infrared thermography to estimate the width of subsurface flaws in fiber-reinforced polymer infrared thermography, i.e., not only detecting but also characterizing subsurface flaws. Finite element

  17. Crack-based analysis of concrete with brittle reinforcement

    E-Print Network [OSTI]

    Burgoyne, Chris

    { FaberMaunsell Ltd; University of Cambridge Brittle reinforcement (such as fibre-reinforced plastic to the surround- ing concrete, at a crack surface sL=sR s on the left/right side of a crack u increase in unbonded

  18. Development of a Reaction Signature for Combined Concrete Materials 

    E-Print Network [OSTI]

    Ghanem, Hassan A.

    2010-07-14T23:59:59.000Z

    chemical reaction between the reactive silica existent in some types of rocks and alkali hydroxides in the concrete pore water. The product of this reaction is a gel that is hygroscopic in nature. When the gel absorbs moisture, it swells leading to tensile...

  19. E-Area Vault Concrete Material Property And Vault Durability/Degradation Projection Recommendations

    SciTech Connect (OSTI)

    Phifer, M. A.

    2014-03-11T23:59:59.000Z

    Subsequent to the 2008 E-Area Low-Level Waste Facility (ELLWF) Performance Assessment (PA) (WSRC 2008), two additional E-Area vault concrete property testing programs have been conducted (Dixon and Phifer 2010 and SIMCO 2011a) and two additional E-Area vault concrete durability modeling projections have been made (Langton 2009 and SIMCO 2012). All the information/data from these reports has been evaluated and consolidated herein by the Savannah River National Laboratory (SRNL) at the request of Solid Waste Management (SWM) to produce E-Area vault concrete hydraulic and physical property data and vault durability/degradation projection recommendations that are adequately justified for use within associated Special Analyses (SAs) and future PA updates. The Low Activity Waste (LAW) and Intermediate Level (IL) Vaults structural degradation predictions produced by Carey 2006 and Peregoy 2006, respectively, which were used as the basis for the 2008 ELLWF PA, remain valid based upon the results of the E-Area vault concrete durability simulations reported by Langton 2009 and those reported by SIMCO 2012. Therefore revised structural degradation predictions are not required so long as the mean thickness of the closure cap overlying the vaults is no greater than that assumed within Carey 2006 and Peregoy 2006. For the LAW Vault structural degradation prediction (Carey 2006), the mean thickness of the overlying closure cap was taken as nine feet. For the IL Vault structural degradation prediction (Peregoy 2006), the mean thickness of the overlying closure cap was taken as eight feet. The mean closure cap thicknesses as described here for both E-Area Vaults will be included as a key input and assumption (I&A) in the next revision to the closure plan for the ELLWF (Phifer et al. 2009). In addition, it has been identified as new input to the PA model to be assessed in the ongoing update to the new PA Information UDQE (Flach 2013). Once the UDQE is approved, the SWM Key I&A database will be updated with this new information.

  20. HYDRAULIC AND PHYSICAL PROPERTIES OF SALTSTONE GROUTS AND VAULT CONCRETES

    SciTech Connect (OSTI)

    Dixon, K; John Harbour, J; Mark Phifer, M

    2008-11-25T23:59:59.000Z

    The Saltstone Disposal Facility (SDF), located in the Z-Area of the Savannah River Site (SRS), is used for the disposal of low-level radioactive salt solution. The SDF currently contains two vaults: Vault 1 (6 cells) and Vault 4 (12 cells). Additional disposal cells are currently in the design phase. The individual cells of the saltstone facility are filled with saltstone. Saltstone is produced by mixing the low-level radioactive salt solution, with blast furnace slag, fly ash, and cement (dry premix) to form a dense, micro-porous, monolithic, low-level radioactive waste form. The saltstone is pumped into the disposal cells where it subsequently solidifies. Significant effort has been undertaken to accurately model the movement of water and contaminants through the facility. Key to this effort is an accurate understanding of the hydraulic and physical properties of the solidified saltstone. To date, limited testing has been conducted to characterize the saltstone. The primary focus of this task was to estimate the hydraulic and physical properties of three types of saltstone and two vault concretes. The saltstone formulations included saltstone premix batched with (1) Deliquification, Dissolution, and Adjustment (DDA) salt simulant (w/pm 0.60), (2) Actinide Removal Process (ARP)/Modular Caustic Side Solvent Extraction Unit (MCU) salt simulant (w/pm 0.60), and (3) Salt Waste Processing Facility (SWPF) salt simulant (w/pm 0.60). The vault concrete formulations tested included the Vault 1/4 concrete and two variations of the Vault 2 concrete (Mix 1 and Mix 2). Wet properties measured for the saltstone formulations included yield stress, plastic viscosity, wet unit weight, bleed water volume, gel time, set time, and heat of hydration. Hydraulic and physical properties measured on the cured saltstone and concrete samples included saturated hydraulic conductivity, moisture retention, compressive strength, porosity, particle density, and dry bulk density. These properties were determined following a minimum 28 day curing period. Additional testing of the three saltstone formulations was conducted following a minimum 90 day curing period. The compressive strength of each saltstone and concrete material was measured at approximately 14, 28, 56, and 90 days. Recommended hydraulic property values for each saltstone grout and the vault concretes are provided. The hydraulic properties provided for each material include the saturated hydraulic conductivity, dry bulk density, particle density, and porosity. In addition, water retention data are presented for each material along with the van Genuchten transport parameters as determined using the RETC code.