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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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Measuring the reflectance of vitrinite dispersed in sedimentary rocks is one of the most commonly used tools for determining thermal maturity in hydrocarbon exploration, basin modeling and other geological applications. Despite this, there currently is not a consensus standard for making these measurements. ASTM International Committee D05 on Coal and Coke is developing a proposed standard to…
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Subcommittee D05.21 on Methods of Analysis invites all interested parties to participate in the development of a proposed new standard, WK22936 , Test Method for Determination of Sulfur Forms in Coal by ICP-AES. The subcommittee is part of ASTM International Committee D05 on Coal and Coke. According to Colin Campbell, SaskPower, and D05 member, WK22936 is to be based on D2492 , Test Method for…
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ASTM International Committee F37 on Light Sport Aircraft is currently at work on a proposed new standard that will aid light sport aircraft manufacturers in understanding the standardization system that governs their products. ASTM WK22124 , Guide for Compliance with Light Sport Airplane Standards, is under the jurisdiction of the F37.20 Airplane subcommittee. According to Thomas Gunnarson, U.S.…
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ASTM International Committee F37 on Light Sport Aircraft will meet March 30 to April 1, 2009, at the Messe Friedrichshafen Exhibition Grounds in Friedrichshafen, Germany, in conjunction with AERO Friedrichshafen 2009. The three days of F37 technical meetings will include discussions on changes to key LSA standards and proposals for new documents. It will also include several other activities,…
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A new mechanical sampling standard recently approved by ASTM International Committee D05 on Coal and Coke incorporates into one document four other ASTM standards dealing with mechanical samples. The new standard, D7430 , Practice for Mechanical Sampling of Coal, is under the jurisdiction of Subcommittee D05.23 on Sampling. Paul Reagan, president, Sampling Associates International, and a D05…
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Laboratories that test coal and coke for moisture, volatile matter and ash will benefit from a proposed new standard being developed by ASTM International Committee D05 on Coal and Coke. The new standard, WK19081 , Test Method for Proximate Analysis of Coal and Coke by Macro Thermogravimetric Analysis, is being developed by a task group under the jurisdiction of Subcommittee D05.21 on Methods 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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In response to changing emissions restrictions and consumer expectations, ASTM International Committee D15 on Engine Coolants is now developing a proposed new standard, WK16003 , Specification for Engine Coolant Grade 1,3-propanediol (PDO). This task group is under the jurisdiction of Subcommittee D15.07 on Specifications. Edward Eaton, D15 member and chief engineer, Amalgatech, says that as…
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Users of laboratory services and other interested parties are invited to participate in the development of a new practice that will promote uniformity in quality management practice for all standards under the jurisdiction of ASTM International Committee D05 on Coal and Coke. Subcommittee D05.30 on Quality Assurance is developing the proposed new standard, WK14563 , Establishing the Competence of…