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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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Two new ASTM International standards will aid in the recent national movement to develop a mechanistic-empirical design guide for pavements. The new standards, developed by ASTM International Committee D35 on Geosynthetics, will each cover quantification of fundamental material properties for pavement components. The standards, ASTM D7499 , Test Method for Measuring Geosynthetic-Soil Resilient…, ASTM Committee D35 Next Meeting:, Feb 2-4, 2011, January Committee Week, Baltimore, Md., Technical Contact:, Eli Cuelho, Western Transportation Institute, Montana State University, Bozeman, Mont.; Phone: 406-994-7886; elic@coe.montana.edu, ASTM Staff Contact:, Christine Basile, Phone: 610-832-9728, cbasile@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8605
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The U.S. Department of Defense, as well as architects, mechanical engineers and food service consultants who design commercial kitchens, will be the primary users of a proposed new standard, WK25126 , Specification for Recirculating Hood System for Cooking Appliances. WK25126 is being developed by Subcommittee F26.07 on Commercial Kitchen Ventilation, part of ASTM International Committee F26 on…, ASTM Committee F26 Next Meeting:, April 20-21 , April Committee Week, St. Louis, Mo., Technical Contact:, Richard Swierczyna, Architectural Energy Corp., Wood Dale, Ill., Phone: 630-860-1439, rswierczyna@archenergy.com, ASTM Staff Contact:, Christine DeJong, Phone: 610-832-9736, cdejong@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #844 4/Dec2009
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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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ASTM International Committee F26 on Food Service Equipment will hold a free webinar on operating costs of food service equipment on Sept. 17 from 2 to 3:30 p.m. EST. Based on the ASTM standard F2687 , Practice for Life Cycle Cost Analysis of Commercial Food Service Equipment, the webinar will focus on the two new free tools that have been developed by food industry experts to project the total…
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Requests from industry to develop a standard practice for determining the total cost of ownership for commercial food service equipment have led to the formation of F26.05 on Life Cycle Cost, a subcommittee of ASTM International Committee F26 on Food Service Equipment. “An industry standard for analyzing the life cost of commercial food service equipment is needed to help the industry address…
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A new ASTM standard developed by ASTM International Committee D35 on Geosynthetics fills a need for an internationally recognized standard to ensure that EPDM sheet material received by customers is consistent regardless of the manufacturer. The new standard, D7465 , Specification for Ethylene Propylene Diene Terpolymer (EPDM) Sheet Used in Geomembrane Applications, is under the jurisdiction of…
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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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ASTM International Committee D35 on Geosynthetics invites all interested parties to participate in the development of a proposed new standard, WK15082 , Specification for Measuring the Asperity Height of Textured Geomembrane. The proposed standard is being developed by Subcommittee D35.10 on Geomembranes. Although asperity height is specified throughout the geosynthetic industry, a procedure to…
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A pair of new ASTM International standards developed by ASTM International Committee F26 on Food Service Equipment will be used to replace U.S. Department of Defense military standards. Subcommittee F26.04 on Mechanical Preparation Equipment developed the standards, F 2645 , Specification for Bun Slicing Machines, and F 2646 , Specification for Bread Slicing Machines. According to Richard…