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A new ASTM International practice provides a standard for preparing a mixture of cement paste that will simulate the shearing experienced by the cement paste in concrete. The new standard, ASTM C1738 , Practice for High-Shear Mixing of Hydraulic Cement Pastes, was developed by Subcommittee C01.22 on Workability , part of ASTM International Committee C01 on Cement . According to Chiara Ferraris,…
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Users of standards involving kinetic parameters need reference materials to qualify individual laboratories and to validate procedures and software. A new ASTM International standard will provide such parameters to accommodate apparatus configurations and kinetic models. ASTM E2781 , Practice for Evaluation of Methods for Determination of Kinetic Parameters by Thermal Analysis, was developed by…, ASTM Committee E27 Next Meeting:, Nov. 15-17, November Committee Week, Tampa, Fla., Technical Contact:, Roger Blaine, Corvallis, Ore., Phone:, 302-559-6827; roger.l.blaine@gmail.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 #8893
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New regulations set forth by the U.S. Environmental Protection Agency to mandate greenhouse gas reporting in the U.S. carbon black industry have led to the development of a new ASTM International standard, ASTM D7662 , Test Method for Carbon Content in Carbon Black Feedstock Oils. ASTM D7662 is under the jurisdiction of Subcommittee D24.66 on Environment, Health and Safety, part of ASTM…
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The U.S. Environmental Protection Agency has set forth new regulations that mandate greenhouse gas reporting in the U.S. carbon black industry. These regulations were the impetus for the development of a new ASTM International standard, ASTM D7633 , Test Method for Carbon Black Carbon Content. The new standard was developed by Subcommittee D24.66 on Environment, Health and Safety, part of ASTM…, ASTM Committee D24 Next Meeting:, Dec. 6-8, December Committee Week, New Orleans, La., Technical Contact:, George Joyce, Columbian Chemicals Co., Marietta, Ga., Phone: 770-792-9467; gjoyce@columbianchemicals.com, ASTM Staff Contact:, Joe Koury, Phone: 610-832-9804; jkoury@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8641
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Proposed ASTM Kinetic Parameters Standard Being Developed by Hazard Potential of Chemicals CommitteeA proposed new standard being developed by ASTM International Committee E27 on Hazard Potential of Chemicals will provide needed reference materials for instruments, applications and software used for the evaluation of kinetic data used for hazard evaluation. The proposed new standard, ASTM WK27880 , Practice for Evaluation of Methods for Determination of Kinetic Parameters by Thermal Analysis,…, ASTM Committee E27 Next Meeting:, Nov. 15-17, November Committee Week, Tampa, Fla., Technical Contact:, Roger Blaine, Corvallis, Ore., Phone: 302-559-6827; roger.l.blaine@gmail.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 #8611
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An increased interest in the polyaromatic hydrocarbon content of carbon black, particularly in Europe, and new U.S. Environmental Protection Agency requirements to report greenhouse gas emissions from U.S. industry including carbon black plants has led to the formation of a new ASTM subcommittee. Subcommittee D24.66 on Environment, Health and Safety is part of ASTM International Committee D24 on…
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Rapid hardening hydraulic cements are used in a variety of applications in which reduced cementitious contents are desired or early service is needed. Included among these applications are paving, construction, stucco, mortar and block. A newly approved ASTM International standard covering these cements, ASTM C1600/C1600M , Specification for Rapid Hardening Hydraulic Cement, has been developed by…, Type URH, —ultra rapid hardening, for use where ultra high early strength is desired;, Type VRH, —very rapid hardening, for use where very high early strength is desired;, Type MRH, —medium rapid hardening, for use where mid-range rapid hardening, high early strength is desired; and, Type GRH, —general rapid hardening, for use when the higher strength properties of Type VRH or a Type MRH cement is not required. “ASTM C1600 lists minimum requirements for compressive strength, setting time, shrinkage and soundness (autoclave expansion),” says Hicks. “Optional specifications for sulfate expansion, alkali silicate reactions with aggregates, heat of hydration and expansion in water are also…
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A recently approved revision to ASTM International standard C 150 , Specification for Portland Cement, includes three significant technical changes to the document. The changes are part of a joint effort between ASTM and the American Association of State and Highway and Transportation Officials to harmonize C 150 with AASHTO’s standard, M 85, Specification for Portland Cement. C 150 is under the…
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A process hazard analysis prior to the startup of a chemical processing facility is essential to prevent catastrophic incidents due to thermal runaway reactions. A proposed new ASTM standard, WK9584, Guide for Assessing Potential Hazards of Synthesis Reactions Using Reaction Calorimetry, will help to standardize how the results from reaction calorimetry experiments are used in a process hazard…
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A proposed new standard currently being developed by ASTM International Committee F01 on Electronics will prove to be useful to the tantalum sputtering target industry. The proposed standard, WK9490, Test Method for Reporting Crystallographic Orientation of Sputtering Target Materials, is under the jurisdiction of Subcommittee F01.17 on Sputter Metallization. "The tantalum sputtering target…