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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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Offers Students a Direct Line to Developing Important Sustainability Standards Sustainable development considers the needs of the present without compromising the ability of future generations to meet their own needs, according to ASTM E2114 , Terminology for Sustainability Relative to the Performance of Buildings, a standard under the jurisdiction of ASTM International Committee E60 on…
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Coinciding with Earth Day 2009, the inaugural meetings of ASTM International Committee E60 on Sustainability covered standards work, an expanded sustainability database, a student liaison subcommittee and more. Ninety-five stakeholders from a range of industries met April 21-23 in Vancouver, British, Columbia, Canada, and discussed best practices for sustainability and the potential to…, Life Cycle Assessment Workshop to Be Held in October, On Sunday, Oct. 18, and Monday, Oct. 19, Committee E60 will host a workshop on life cycle assessment and both its theory and practice. The purpose is to share information on the effective use of LCA methodology in supporting standards development. The workshop will be held during the ASTM October committee week meetings in Atlanta, Ga., E60 Develops Submission Criteria and Expands Online Sustainability Database, Through new criteria and a new task group, Committee E60 has expanded the scope of its online sustainability database, and it encourages all ASTM committees and outside organizations to submit sustainability-related standards for possible inclusion in the resource. According to Meadows, the sustainability database fills a void in having one place to gather sustainability standards from both ASTM…, Proposed Standards from New Student Liaison and Affairs Subcommittee, To give a voice to ASTM student members who represent universities around the world, Committee E60 has established Subcommittee E60.95 on Student Liaison and Affairs. Sustainability, notes Meadows, is about managing resources today so that they are available to future generations, and as such, students have a vested interest in the work of the committee. E60 plans to communicate with interested…
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Sustainability standards development and related exchange of information will highlight the inaugural April 21-23 meetings of ASTM International Committee E60 on Sustainability. Coinciding with Earth Day 2009 on April 22, the meetings are scheduled in conjunction with the ASTM April committee week sessions in Vancouver, British Columbia, Canada. Forum for a Comprehensive Approach to…
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No industry standard currently exists that addresses the vacuum sealing requirements of knife-edged flanges for high vacuum applications. Existing international standards focus on interchangeability of the hardware, but do not address the reliability of the seal. ASTM International Committee E42 on Surface Analysis is now working on a proposed standard on the subject, WK21206 , Specification…
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A 2002 workshop on galling wear held by ASTM International Committee G02 on Wear and Erosion provided the impetus for the development of a new standard, ASTM G196 , Test Method for Galling Resistance of Material Couples. The new standard is under the jurisdiction of Subcommittee G02.40 on Non-Abrasive Wear. According to Scott Hummel, Ph.D., associate professor, head of the department of…
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ASTM Committee E60 to Develop Standards That Will Drive Mainstream Market Implementation ASTM International, one of the largest voluntary standards development organizations in the world, today announced the formation of ASTM Committee E60 on Sustainability. This new standards development initiative results from the cooperative efforts of the U.S. Environmental Protection Agency (EPA) and cross…
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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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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…