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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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Manufacturers of toluene, mixed xylenes and p-xylene are often required to determine the type and amount of impurities that remain from manufacture. A new ASTM International standard, D7504 , Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective Carbon Number, can now be used as an internal quality control tool where these products are produced…
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Immediate action would be necessary to minimize the effects of a radiological "dirty bomb" detonation in a major city. In order to help municipalities prepare for such a possibility, ASTM International Committee E54 on Homeland Security Applications is currently developing a proposed new standard, WK19352 , Specification for Materials to Mitigate the Spread of Radioactive Contamination after a…
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Control rooms are the heart of operations for many facilities that could be vulnerable to attack, such as power plants (particularly nuclear), water treatment facilities, oil and gas refineries, rapid transit systems, bridges and dams, among other structures. Subcommittee E54.05 on Building and Infrastructure Protection is currently working on a proposed new standard that deals with control rooms…
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A new ASTM International standard, E2592 , Practice for Evaluating Cache Packaged Weight and Volume of Robots for Urban Search and Rescue, is one result of a three-year National Institute of Standards and Technology (NIST)-coordinated effort with first responders and manufacturers to develop urban search and rescue robot standards. The new standard is under the jurisdiction of Subcommittee E54.08…
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Chemical plants and contract and research laboratories will all be likely users of a new ASTM International standard, D 7183 , Test Method for Determination of Total Sulfur in Aromatic Hydrocarbons and Related Chemicals by Ultraviolet Fluorescence. D 7183 was developed by Subcommittee D16.04 on Instrumental Analysis, part of ASTM International Committee D16 on Aromatic Hydrocarbons and Related…
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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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One of the goals of Subcommittee E54.05 on Building and Infrastructure Protection is to provide guidance for the design of doors, windows and other opening protectives that are part of the exterior security envelopes of buildings. As one path to achieve that goal, the subcommittee is currently developing a proposed new standard, WK14650 , Test Methods for Forced Entry and Ballistics Resistant (…
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An ASTM International task group is developing a proposed new standard, WK11343 , Test Method for Performance Verification of Blast Resistant Trash Receptacles (BRTR). Manufacturers of BRTR and related products, transit and other security organizations that may deploy them, organizations that could conduct testing and other interested parties are welcome to attend a task group meeting from 9:00…
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ASTM International Committee E54 on Homeland Security Applications invites all interested parties to participate in the development of a proposed new standard, WK8908 , Guide for School Preparedness and All-Hazard Response. WK8908 is under the jurisdiction of Subcommittee E54.02 on Emergency Preparedness, Training and Procedures. WK8908 will cover concepts, principles and best practices for all…