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Two recently formed task groups on preparing pervious concrete specimens and research will be participating in the first meeting of the new Subcommittee C09.49 on Pervious Concrete from 8:00 to 10:00 a.m. on June 25 during the ASTM Committee Week in Norfolk, Va. C09.49 is part of ASTM International Committee C09 on Concrete and Concrete Aggregates. Heather Brown, Middle Tennessee State University…, Standardization News, , Karthik Obla, chair of Subcommittee C09.49, noted that there has been a resurgence in interest in pervious concrete due to the U.S. Environmental Protection Agency’s recent recognition of its use as a best management practice for storm water management. An increasing focus on sustainability and the green movement has also contributed to the importance of pervious concrete as a building material…
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ASTM International Committee D35 on Geosynthetics is currently developing a proposed new standard that covers the test procedure for evaluating the effectiveness of prefabricated vertical drains to enhance the consolidation of soils under specified conditions. The proposed standard, WK13402 , Test Method for Large Scale Consolidation Test for Prefabricated Vertical Drains, is under the…
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ASTM International Committee C09 on Concrete and Concrete Aggregates invites all interested parties to attend the first meeting of new Subcommittee C09.49 on Pervious Concrete during the June ASTM Committee Week in Norfolk, Va. The Executive Subcommittee of C09 approved the formation of the subcommittee after more than 60 attendees expressed significant interest and feedback at a formational…
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A proposed new ASTM International standard, WK12964 , Specification for Blended Supplementary Cementitious Materials, will enable producers, especially those with limited silos, to take advantage of the benefits of blending materials. WK12964 is being developed by Subcommittee C09.24 on Supplementary Cementitious Materials, part of ASTM International Committee C09 on Concrete and Concrete…
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The increased use of geomembranes as barrier materials to restrict liquid migration from one location to another created a need for a test method to evaluate the quality of geomembrane seams produced by tape methods. ASTM International Committee D35 on Geosynthetics has met this need with the approval of the new standard D 7272 , Test Method for Determining the Integrity of Seams Used in Joining…
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ASTM Committee C09 on Concrete and Concrete Aggregates will hold a planning meeting for proposed new standards activity on pervious concrete on Dec. 4 at the C09 meeting in Atlanta, Ga. The committee is especially seeking researchers who have been experimenting with different types of tests for pervious concrete, as well as specifying engineers, concrete technologists and contractors. “Many…
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A new ASTM standard, C 1610/C 1610M , Test Method for Static Segregation of Self-Consolidating Concrete Using Column Technique, satisfies a need within the industry for a test method to measure the stability of self-consolidating concrete. The standard is under the jurisdiction of Subcommittee C09.47 on Self-Consolidating Concrete, which is part of ASTM International Committee C09 on Concrete and…
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ASTM International Committee D35 on Geosynthetics has developed a new standard that is an important step toward the improvement of filtration design for non-woven geotextiles. The standard, D 7178 , Practice for Determining the Number of Constrictions “, m, ” of Non-Woven Geotextiles as a Complementary Filtration Property, will provide engineers and researchers a common basis for accurate determination of an important products property. Practice D 7178 is under the jurisdiction of Subcommittee D35.03 on Permeability and Filtration. Practice D 7178 describes the procedure used along with existing test methods to determine the number of…
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ASTM International Committee F16 on Fasteners has recently approved an important new standard that deals with coated threaded fasteners and washers by hot-dip zinc galvanizing. The standard, F 2329, Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts and Special Threaded Fasteners, is under the jurisdiction of Subcommittee…
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Concrete producers of both ready-made and precast/prestressed concrete will be the primary users of a new standard recently approved by ASTM International Committee C09 on Concrete and Concrete Aggregates. The standard, C 1621/C 1621M , Test Method for Passing Ability of Self-Consolidating Concrete by J-Ring, is under the jurisdiction of Subcommittee C09.47 on Self-Consolidating Concrete. …