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Increasing interest in the various uses of electrical contacts is the leading impetus for the development of a proposed new standard, ASTM WK34423 , Specification for Electrodeposited Coatings of Palladium-Cobalt Alloy for Engineering Use. The proposed standard is being developed by Subcommittee B08.08 on Metallic Coatings , part of ASTM International Committee B08 on Metallic and Inorganic…, ASTM Committee B08 Next Meeting:, May 10, 2012, May Committee Week, Phoenix, Ariz., Technical Contact:, Sheikh H. Rahman, Lean Corp., Southfield, Mich., Phone: 248-447-1526; srahman@lear.com, ASTM Staff Contact:, Diane Trinsey, Phone: 610-832-9661; dtrinsey@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9016
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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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A new ASTM subcommittee seeks to acknowledge the ongoing advances being made in the field of nanostructured inorganic coatings. B08.16 on Nanostructured Coatings, part of ASTM International Committee B08 on Metallic and Inorganic Coatings, is currently developing its first proposed standard, ASTM WK29468 , Specification for Galvanic Protection of Steel Using a Nanostructured Coating of 95 % Zinc…
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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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Two proposed new ASTM International standards cover the manufacture and installation of concrete floor tile units for application as exterior and interior flooring. WK17790 , Specification for Concrete Floor Tile, and WK17791 , Guide for Installation Methods for Concrete Floor Tile Products, are both being developed by ASTM International Committee C15 on Manufactured Masonry Units. According to…
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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 B08 on Metallic and Inorganic Coatings has recently approved a revision of one of its most important standards, B 633 , Specification for Electrodeposited Coatings of Zinc on Iron and Steel. B 633 is under the jurisdiction of Task Group B08.08.04 on Soft Metals, which is part of Subcommittee B08.08 on Metallic Coatings. Zinc coatings are used to provide a sacrificial…
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ASTM International Committee C15 on Manufactured Masonry Units has created a new subcommittee, C15.11 on Adhered Manufactured Stone Masonry Veneer. The purpose of C15.11 is to develop and maintain product specifications and installation guidelines for adhered manufactured stone masonry veneer. According to Brenda Harris, chair of the new subcommittee, adhered manufactured stone masonry veneer…
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If you are a user of ASTM B 456, Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium and Nick Plus Chromium, ASTM International Committee B08 on Metallic and Inorganic Coatings would like to hear from you. B 456 is under the jurisdiction of Subcommittee B08.08.03 on Decorative Coatings. "Subcommittee B08.08.03 has received reports that some users are experiencing…
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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.…