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Research and field experience have shown that fines free of clay and other harmful materials can be non-detrimental, and even beneficial, for concrete properties. A proposed new ASTM International standard will be used to distinguish between harmful and non-harmful fines in construction aggregate. ASTM WK36804 , Test Method for Rapid Determination of the Methylene Blue Value for Fine Aggregate…
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While the quality of coating materials for buried pipe at nuclear power plants has evolved over time, there is currently no written standard that would allow plants to fully take advantage of advances in coating technology. A proposed new standard will provide coating guidance for plants seeking to repair or replace buried pipe. The proposed standard, ASTM WK36282 , Guide for Selection of Coating…
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Discussions concerning how easily test results for dimension stone test specimens can be influenced by improper or nonuniform preparation methods have led to the ongoing development of a proposed new ASTM International standard. The new standard, ASTM WK31179 , Practice for Selection and Preparation of Dimension Stone Test Specimens, is being developed by Subcommittee C18.08 on Selection of…
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Petrography is routinely performed on dimension stone for many construction projects in which new stone is being used, and it is often required in technical specifications. In order to facilitate this process, ASTM International Committee C18 on Dimension Stone has developed a new standard, ASTM C1721 , Guide for Petrographic Examination of Dimension Stone. The new standard is under the…, ASTM Committee C18 Next Meeting:, April 21-22, April Committee Week, St. Louis, Mo., Technical Contact:, Michael Scheffler, Wiss, Janney, Elstner Associates Inc., Northbrook, Ill., Phone: 847-272-7400; mscheffler@wje.com, ASTM Staff Contact:, Jeff Adkins, Phone: 610-832-9738; jadkins@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8432/Dec2009
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ASTM International Committee D33 on Protective Clothing and Lining Work for Power Generation Facilities has approved a revision to standard D 4260, now titled Practice for Liquid and Gelled Acid Etching of Concrete. The revised standard is under the jurisdiction of Subcommittee D33.05 on Application and Surface Preparation. According to Tamryn Doolan, president and CEO, Surface Gel Tek, the…