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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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ASTM International Committee B01 on Electrical Conductors has approved a new standard for tin-coated annealed copper wire. The standard, B965 , Specification for High Performance Tin-Coated Annealed Copper Wire Intended for Electrical and Electronic Application for Solderability, was developed by Subcommittee B01.04 on Conductors of Copper and Copper Alloys . Stephen Childers, process engineer,…
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The main purpose of any grounding product is to provide a low-resistance path for fault currents to follow to the ground, which will ultimately protect the integrity of the power system and maintain a safe operating environment. ASTM International Committee B01 on Electrical Conductors is developing a proposed new standard to annealed concentric-lay-stranded copper-clad steel conductors. While…
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Two new ASTM International standards for steel core wire will be useful in providing transmission cable that will make the most of the existing infrastructure in gaining electrical transmission efficiency. “The products in these standards allow electrical utilities and transmission cable designers more flexibility to increase electrical transmission capacity with minimal investments,” says Dale…
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The presence of lead in toys and other consumer products continues to make headlines. The Consumer Product Safety Improvement Act, a United States law enacted in August 2008, addresses the lead issue and makes provisions for the use of X-ray spectrometry in testing for lead content. To aid the toy and consumer products industries in using X-ray spectrometry for lead detection and meet the…
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All interested parties are encouraged to participate in the development of a proposed new ASTM International standard, WK20460 , Specification for High Performance Tinned Coated Annealed Copper Wire Intended for Electrical and Electronic Application for Solderability. The proposed standard is being developed by Subcommittee B01.04 on Conductors of Copper and Copper Alloys, which is part of ASTM…
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ASTM International Committee F40 on Declarable Substances in Materials has approved its first test method, F2617 , Test Method for Identification and Quantification of Chromium, Bromine, Cadmium, Mercury and Lead in Polymeric Material Using Energy Dispersive X-ray Spectrometry. The new standard is under the jurisdiction of Subcommittee F40.01 on Test Methods. ASTM F2617 describes a method for…
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Accepted Fire Prevention Measure to Benefit Citizen Safety Seeking to prevent accidental death and damage to property related to untended cigarettes, Finland has proposed that all cigarettes sold in the country be tested to assess their likelihood to cause fire in bedding or upholstered furniture. The regulatory proposal specifies the use of ASTM E2187 - an international standard developed by…
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A new Pennsylvania law to help prevent smoking-related fires will require that cigarettes sold in the state perform well when tested using ASTM International standard E2187 , Test Method for Measuring the Ignition Strength of Cigarettes. "Careless smoking is one of the leading causes of fires, killing hundreds and injuring thousands every year," said Rep. Tim Solobay, a volunteer firefighter who…
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A new ASTM International standard will assist industry with a communication tool in order to comply with the European Union's Registration, Evaluation and Authorization of Chemicals, more commonly referred to as REACH. ASTM F2725, Standard Guide for European Union's Registration, Evaluation and Authorization of Chemicals (REACH) Supply Chain Information Exchange, was developed by Subcommittee F40…