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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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In an action effective on Nov. 10, 2009, 15 methods contained in 10 ASTM standards are among 25 analytical methods that the U.S. Environmental Protection Agency has approved for determining contaminant concentrations in samples collected under the Safe Drinking Water Act. The methods are under the jurisdiction of Subcommittee D19.05 on Inorganic Constituents in Water, part of ASTM Committee D19…, ASTM Committee D19 Next Meeting:, Jan. 17-21, Cocoa Beach, Fla., ASTM Staff Contact:, Brynn Murphy , Phone: 610-832-9640; bmurphy@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #84 52/Jan2010
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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…
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Engineers and researchers who have specialized Charpy testing needs will be the primary users of two new standards recently approved by ASTM International Committee E28 on Mechanical Testing. The new standards, E2248 , Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens, and E2298 , Test Method for Instrumented Impact Testing of Metallic Materials, were developed by…
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ASTM Pervious Concrete Subcommittee Developing Proposed Standard for Sustainable Mixture ProportionsOnce approved, a proposed new ASTM standard will aid concrete producers in developing sustainable and durable mixture proportions for pervious concrete. The proposed new standard, WK23367 , Test Method for Evaluating the Surface Durability Potential of a Pervious Concrete Mixture, is being developed by Subcommittee C09.49 on Pervious Concrete, part of ASTM International Committee C09 on Concrete…
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A proposed new ASTM International standard, ASTM WK22233 , Test Method for Indication of Concrete’s Ionic Conductivity, describes a five-minute nondestructive test that has the potential to replace a destructive six-hour test requiring several hours of preparation time. The proposed standard is being developed by Subcommittee C09.66 on Concrete’s Resistance to Fluid Penetration, part of ASTM…
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Shrinkage that occurs during the drying process is a major cause of cracking in concrete. However, application of shrinkage-reducing admixtures in the field has been yielding positive results, and engineers have realized that admixtures can mitigate cracking. A new ASTM standard currently being developed by Subcommittee C09.23 on Chemical Admixtures will set minimum standards for an admixture to…
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Because of its porous nature, pervious concrete cannot be tested using standards developed for traditional concrete. In order to fill this need, ASTM International Committee C09 on Concrete and Concrete Aggregates is developing a series of proposed test methods specific to pervious. The first of these proposed standards, ASTM C1688/C1688M , Test Method for Density and Void Content of Freshly…
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Analysts in laboratories that use regression-based methods to determine uncertainty in data and customers that request such measurements will be the primary users of a new standard recently approved by ASTM International Committee D19 on Water. ASTM D7366 , Practice for Estimation of Measurement Uncertainty for Data from Regression-Based Methods was developed by Subcommittee D19.02 on Quality…
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Two new calibration standards for use with X-ray fluorescence equipment in the chemical analysis of hydraulic cement are now available from the Cement and Concrete Reference Laboratory (CCRL). The new standards are designated Portland Cements 167 and 168 and are vacuum-sealed to prevent moisture uptake. Robin Haupt, supervisor, CCRL proficiency sample program, says that the two new cements were…