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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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Inert gases that are found in insulating glass units help make windows more energy efficient. A new ASTM International standard provides a long-needed method for evaluating gas concentration inside insulating glass units without destroying or altering the edge seal. The new standard, ASTM E2649 , Test Method for Determining Argon Concentration in Sealed Insulating Glass Units Using Spark Emission…
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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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Insulating concrete form systems are gaining acceptance as energy efficient building envelopes for both residential and commercial construction, with more than 80 ICF products available. In order to deal with the varying quality of ICFs, ASTM International Committee E06 on Performance of Buildings has developed a new standard, ASTM E2634 , Specification for Flat Wall Insulating Concrete Form (ICF…
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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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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…
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ASTM International has announced the planned formation of a new technical committee on sustainability. An organizational meeting for the new standards writing committee will be held Oct.1, 2008, in Miami, Fla. ASTM Standards: Bringing Sustainability into the Mainstream Numerous environmental, social and economic challenges have brought issues of sustainability to the forefront in recent years. …
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Considering the effects of meetings on the environment is the purpose of a new activity launched by ASTM International and the Convention Industry Council through its Accepted Practices Exchange (APEX) initiative. Responding to a request from the U.S. Environmental Protection Agency, ASTM and CIC have gathered a variety of stakeholders from government, business and industry in Task Group E06.71.…