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A proposed new ASTM standard will provide proper direction and ensure adequate documentation to aid in the interpretation, understanding and reduction of variance in test results for fiber-reinforced concrete. ASTM WK35250 , Practice for Fiber-Reinforced Concrete for Making and Curing Test Specimens in the Laboratory and Field, is now being developed by Subcommittee C09.42 on Fiber-Reinforced…
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Formalizing a method for making a cylindrical specimen of roller-compacted concrete in a gyratory compactor is the primary purpose of a proposed new ASTM International standard. ASTM WK33682 , Test Method for Preparation, Compaction and Density Determination of Roller-Compacted Concrete Specimens by Means of the Superpave Gyratory Compactor, is being developed by Subcommittee C09.45 on Roller-…
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While the use of internally cured concrete in construction is not new, there is now better understanding of the internal curing process and why IC using pre-wetted lightweight aggregate increases concrete durability and service life in an economical and practical way. However, there is not currently a standard for lightweight aggregates for internal curing. ASTM International Committee C09 on…
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A proposed new standard on determining the total amount of fluorine and chlorine in coal and coke will be useful to those working with power plant boilers as well as by those in government and industry who are trying to model the release of anions into the environment. The proposed new standard, ASTM WK33343 , Test Method for Total Fluorine and Chlorine in Coal, Coke and their Residues by…
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New ASTM Vitrinite Reflectance Standard Will Aid in Prediction of Undiscovered Hydrocarbon ResourcesA new ASTM International standard for measuring the reflectance of vitrinite in sedimentary rocks will help improve predictions of the location, quantity and quality of undiscovered hydrocarbon resources. ASTM D7708 , Test Method for Microscopical Determination of the Reflectance of Vitrinite Dispersed in Sedimentary Rocks, was developed by Subcommittee D05.28 on Petrographic Analysis of Coal and…, ASTM Committee D05 Next Meeting:, Oct. 30-Nov. 2, 2011, October Committee Week, Tampa, Fla., Technical Contact:, Paul C. Hackley, U.S. Geological Survey, Reston, Va., Phone: 703-648-6458; phackley@usgs.gov, ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8881
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Natural gas from unconventional sources such as coal beds has become a common target of exploration. Now, a new ASTM standard is the first to describe a method for determining the gas content of coal from such sources by desorption, using samples obtained by surface drilling. ASTM D7569 , Practice for Determination of Gas Content of Coal - Direct Desorption Method, was developed by Subcommittee…, ASTM Committee D05 Next Meeting:, May 15-18, 2011, May Committee Week, Anaheim, Calif., Technical Contact:, Peter Warwick, U.S. Geological Survey, Reston, Va., Phone: 703-648-6469; pwarwick@usgs.gov, ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8749
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ASTM International Committee C09 on Concrete and Concrete Aggregates is currently developing a proposed standard that addresses bleed stability. ASTM WK28156 , Test Method for Bleed Stability of Cementitious Grout Under Static Pressure, is under the jurisdiction of ASTM International Subcommittee C09.41 on Hydraulic Cement Grouts. When cementitious grouts bleed, mixing water separates from the…, ASTM Committee C09 Next Meeting:, Dec. 6-8, December Committee Week, New Orleans, La., Technical Contact:, Fred Goodwin, BASF Construction Chemicals, Cleveland, Ohio, Phone: 216-839-7009; fred.goodwin@basf.com, ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8648
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Members of ASTM Committees C09 on Concrete and Concrete Aggregates and C01 on Cement, as well as other interested parties, are invited to join new Subcommittee C09.50 on Risk Management for Alkali Aggregate Reactions. The new subcommittee will develop standards on the mitigation of deleterious alkali-aggregate reactions in concrete. To initiate the launch of C09.50, Committees C01 and C09 are the…
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Moisture, volatile matter and ash are three of the primary parameters used for assessing the quality of coal. A new ASTM standard that covers the use of a macro thermogravimetric analyzer for the determination of moisture, volatile matter and ash in analysis samples of coal and coke has recently been approved by ASTM International Committee D05 on Coal and Coke. ASTM D7582 , Test Methods for…, ASTM Committee D05 Next Meeting:, May 16-19, May committee week, St. Louis, Mo., Technical Contact:, John T. Riley, Ph.D., Western Kentucky University, Bowling Green, Ky., Phone: 270-842-2757; brgrileys@insightbb.com, ASTM Staff Contact:, Scott Orthey, Phone: 610-832-9730; sorthey@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8 508/Feb2010
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Subjects Include Aggregate Resistivity, Lightweight Aggregates, Methacrylate Bonding Systems and Semi-Adiabatic Calorimetry The following four proposed new standards are among those currently being developed by subcommittees under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates. Subject matter covered by these standards includes aggregate resistivity, lightweight…