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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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Producers of fluorocarbons are invited to join in the ongoing standards developing activities of ASTM International Committee D26 on Halogenated Organic Solvents and Fire Extinguishing Agents. The committee has recently approved a new standard, ASTM D7509 , Specification for Fluorocarbon Feedstock Grade Chloroform, under the jurisdiction of Subcommittee D26.08 on Halogenated Organics Used as…
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Nondestructive testing equipment manufacturers and users are invited to join a task group developing a proposed new ASTM standard, WK20537 , Practice for Digital Imaging and Communication in Nondestructive Evaluation (DICONDE) for Eddy Current Test Methods. The proposed practice, which will focus on test results storage and communication, will be based on a highly successful medical industry…
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Finding ways to assure the quality and safe handling of fire extinguishing agents has led to the development of two new ASTM International standards, D 7323 , Practice for Handling, Transportation and Storage of IG-100 (Nitrogen), and D 7325 , Practice for Handling, Transportation and Storage of IG-541, N2, Ar, CO2. The new standards were developed by Subcommittee D26.09 on Fire Extinguishing…
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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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Providing users with an assurance of quality and ensuring the safe handling, transport and storage of fire extinguishing agents are the purposes of a new ASTM International standard, D 7327 , Specification for HFC Blend B (CH2FCF3, CHF2CF3 and CO2). The new standard was developed by Subcommittee D26.09 on Fire Extinguishing Agents, which is part of ASTM International Committee D26 on Halogenated…
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Subcommittee D26.09 on Fire Extinguishing Agents is dedicated to developing standards that provide end users with an assurance of quality in fire extinguishing agents, as well as to ensure the safe handling, transport and storage of such agents. The subcommittee, which is under the jurisdiction of ASTM International Committee D26 on Halogenated Organic Solvents and Fire Extinguishing Agents, is…
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ASTM International Committee E07 on Nondestructive Testing has approved a new standard that can be used for the same applications as the now-cancelled MIL-STD-2154, Process for Inspection, Ultrasonic, Wrought Metals. The new standard, E 2375 , Practice for Ultrasonic Examination of Wrought Products, is under the jurisdiction of Subcommittee E07.06 on Ultrasonic Testing Procedures. Practice E…
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ASTM International Committee E07 on Nondestructive Testing has developed a new standard, E 2491, Guide for Evaluating Performance Characteristics of Phased-Array Ultrasonic Examination Instruments and Systems. Guide E 2491 , which is under the jurisdiction of Subcommittee E07.06 on Ultrasonic Method, is intended to be used for comparing instruments and systems, as well as for detecting long-term…
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New ASTM Nondestructive Testing Standard Presents Digital Images for Inspection of Aluminum CastingsDeveloping new ASTM standard E 2422, Reference Digital Images for Inspection of Aluminum Castings, wasn’t just a matter of digitizing the images used in current standard E 155, Reference Radiographs for Inspection of Aluminum and Magnesium Castings. According to Michael Horky, principal level III, RT, Boeing Commercial Airplanes, to create the new standard, task group members had to understand…