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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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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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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 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…
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A new, two DVD set, "Reference Radiograph E 2422, Standard Digital Reference Images for Inspection of Aluminum Castings," is now available for purchase from ASTM International. The images illustrate the types and degrees of discontinuities that may be found in aluminum-alloy castings. This two DVD set consists of 13 digital files, software to load the desired format, and specific instructions…
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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.…