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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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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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Joe Koury, staff manager for ASTM International Committee E52 on Forensic Psychophysiology, will speak at the annual seminar of the American Association of Police Polygraphists on April 17 at the Hotel Albuquerque at Old Town in Albuquerque, N.M. This meeting will follow the April 14-15 meetings of Committee E52, which will take place at the some hotel. In his presentation, Koury will provide an…
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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…
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ASTM International Committee F01 on Electronics is currently developing a proposed new standard that will provide uniformity in the values reported for oxygen content in aluminum alloys used for sputtering targets in the manufacture of integrated circuits. The proposed standard, WK9120, Determination of Oxygen in High Purity Aluminum and Alloys in High Purity Aluminum Base by Inert Gas Fusion…
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After a 35-year-absence, the natural cement industry is being revived and, along with it, a long-withdrawn ASTM International standard. Until it closed in 1970, the Century Cement Company in Rosendale, N.Y. was the last company to manufacture natural cement. Up to that point, Rosendale had been the center of the industry, the source of more than half of all natural cement produced in the U.S.…
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A new test method developed by ASTM International Committee C01 on Cement provides information about the behavior of cement that can be used in the process of selecting cementing materials for specific applications. The standard, C 1608, Test Method for Chemical Shrinkage of Hydraulic Cement Pastes, is under the jurisdiction of Subcommittee C01.31 on Volume Change. Test Method C 1608 was…
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Forensic Psychophysiology Committee in ASTM International Aims at Reducing Perjury with New StandardThe aim of a new ASTM standard developed by Committee E52 on Forensic Psychophysiology is to assist the judicial system in reducing incidents of perjury. The new standard, E 2324, Guide for PDD Paired Testing, is under the jurisdiction of Subcommittee E52.05 on Psychophysiological Detection of Deception (PDD). According to George Baranowski, founder, Mindsight Consultants, the guide could be…