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A proposed new ASTM test method will be used to quantify the resistivity of concreting materials that are widely used for construction around the world. ASTM WK37880 , Test Method for Measuring the Surface Resistivity of Hardened Concrete Using the Wenner Four-Electrode Method, is being developed by Subcommittee C09.66 on Concrete’s Resistance to Fluid Penetration , part of ASTM International…, ASTM Committee C09 Next Meeting:, June 9-12, 2013, June Committee Week, Indianapolis, Ind., Technical Contact:, Kenneth A. Snyder, National Institute of Standards and Technology, Gaithersburg, Md., Phone: 301-975-4260; kenneth.snyder@nist.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 #9321
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It happens all too often: a driver suddenly loses control of a car, sending it into a storefront or other pedestrian area. Property damage and serious injuries, sometimes fatal, can result from these accidents. In an effort to minimize the damage caused by such crashes, ASTM International Committee F12 on Security Systems and Equipment is developing a proposed new standard, ASTM WK13074 , Test…, ASTM Committee F12 Next Meeting:, Oct. 22-24, 2012, October Committee Week, Atlanta, Ga., Technical Contacts:, Rob Reiter, Storefront Safety Consultant, Phone: 909-964-2906; r ob.reiter.pp@gmail.com ; Dean Alberson, Texas Transportation Institute, Texas A&M University, Phone: 979-458-3874; d-alberson@tamu.edu, ASTM Staff Contact:, Joseph Hugo, Phone: 610-832-9740; jhugo@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindler@astm.org R elease #9263
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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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ASTM International Committee F12 on Security Systems and Equipment invites all interested parties to participate in the current revision of ASTM F967 , Practice for Security Engineering Symbols. The standard is under the jurisdiction of Subcommittee F12.10 on Systems, Products and Services. According to Ed Conrath, senior principal, Protection Engineering Consultants, and F12 committee chairman,…
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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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“Bumping” is a process that can allow virtually anyone to covertly operate a pin tumbler lock. A long-held locksmith secret, bumping has become more well known as videos describing the process of making and using a bump key have surfaced on the Internet. Potential intruders can use the bumping process to break into homes and other buildings while leaving the impression that something must have…
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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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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…