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A new ASTM International practice provides a standard for preparing a mixture of cement paste that will simulate the shearing experienced by the cement paste in concrete. The new standard, ASTM C1738 , Practice for High-Shear Mixing of Hydraulic Cement Pastes, was developed by Subcommittee C01.22 on Workability , part of ASTM International Committee C01 on Cement . According to Chiara Ferraris,…
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Fatigue fretting is the process of crack formation and progressive crack growth at a location in a mechanical system where two components are in contact and undergoing a vibratory loading. A new ASTM International standard provides insight on what conditions promote fretting fatigue and offers approaches to design an experiment to assess it. ASTM E2789 , Guide for Fretting Fatigue Testing, was…, ASTM Committee E08 Next Meeting:, May 16-20, May Committee Week, Anaheim, Calif., Technical Contact:, Richard W. Neu, Georgia Institute of Technology, Atlanta, Ga., Phone: 404-894-3074; rick.neu@gatech.edu ASTM Staff Contact: Jeff Adkins, Phone: 610-832-9738; jadkins@astm.org ASTM PR Contact: Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org R elease #8809
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Creep-fatigue testing simulates the loading and temperature conditions experienced by turbine components of aircraft engines, nuclear reactor components and fossil power plant components during service. With increasing need for cyclic operation during peak power demands, reliable creep-fatigue test data is necessary for the life assessment of aging power plants. A new ASTM standard, ASTM E2714 ,…
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Being able to complement marketing claims in advertising and promotions with third-party certification or verification is important in any industry. A new ASTM subcommittee will be working on standards for such verification in the livestock and meat industry. The new subcommittee, F10.60 on Livestock, Meat and Poultry Marketing Claims, is part of ASTM International Committee F10 on Livestock,…
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There has been a renewed interest in instrumental qualification and standardization by the fluorescence community over the last 10 years, driven by the increasing number of quantitative chemical assays that use fluorescence detection and the presence of regulations in some of these areas. After revising three test methods for fluorescence instruments, stakeholders decided that a standard guide…
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A proposed new ASTM standard will assist in establishing tests for fretting fatigue, an issue at attachments and joints in a variety of mechanical, aeronautical and biomedical engineering systems and devices. WK24298 , Guide for Fretting Fatigue Testing, is being developed by Subcommittee E08.05 on Cyclic Deformation and Fatigue Crack Formation, part of ASTM International Committee E08 on Fatigue…, ASTM Committee E08 Next Meeting:, May 17-20, 2010, May Committee Week, St. Louis, Mo., Technical Contact:, Richard W. Neu, Georgia Institute of Technology, Atlanta, Ga., Phone: 404-894-3074; rick.neu@gatech.edu, ASTM Staff Contact:, Jeff Adkins, Phone: 610-832-9738; jadkins@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8430/Dec2009
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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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Data produced from the use of a proposed new ASTM International standard will be employed in the design of new, more efficient aircraft engines as well as for piping, steam and gas turbines used in power generation. The proposed new standard, WK21984 , Test Method for Creep-Fatigue Crack Growth Rate Testing, is being developed by Subcommittee E08.06 on Crack Growth Behavior, part of ASTM…
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ASTM Committee F10 on Livestock, Meat and Poultry Evaluation Systems has approved a new standard, F2717 , Guide for the Development of Independent Third-Party Verification. The standard, which was developed by Subcommittee F10.20 on Device Performance Criteria, provides an internationally recognized set of guidelines for companies that test the accuracy of livestock, meat and poultry evaluation…
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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…