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Current members of ASTM International Committees C01 on Cement and C09 on Concrete and Concrete Aggregates , and other interested parties, are invited to join a new C01 subcommittee, C01.98 on Sustainability Assessment. The scope of C01.98 is to support the development and maintenance of standards related to methodologies and metrics for assessing sustainability in the manufacture and use of…
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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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X-ray diffraction has become a popular means of residual stress measurement in the aerospace materials field over the last 50 years. A proposed new guide being developed by ASTM International Committee E28 on Mechanical Testing will provide the necessary information to obtain the most reliable residual stress values as well as identify and evaluate potential errors in measurement, paving the way…
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Several years ago, a housing boom followed by recovery from damage caused by Hurricane Katrina and other storms created a surge in the use of imported drywall in the United States, particularly in the southeastern area of the country. However, since then, there have been a number of complaints concerning corrosion and odors in homes in which some of this drywall was used. Interim guidance…
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With heightened interest in issues involving corrosive gypsum board, the first draft of a proposed new standard on the subject, ASTM WK26072 , Practice for Evaluation of Buildings to Identify Corrosive Gypsum Board, was reviewed and edited at a task group meeting on Nov. 10 in Atlanta, Ga. The proposed new standard is under the jurisdiction of ASTM Subcommittee C11.01 on Specifications and Test…, ASTM Committee C11 Next Meeting:, May 17-19, 2010, St. Louis, Mo., Technical Contact:, Spiderman Mulholland, U.S. Building Consultants Inc., Gainesville, Fla., Phone: 352-505-6771; spiderman@usbcinc.com, ASTM Staff Contact:, Thomas O’Toole, Phone: 610-832-9739; totoole@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8414/Nov2009
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At an ASTM International meeting held on Oct. 20 it was decided to initiate the formulation of a proposed new ASTM standard that will cover issues relating to drywall and indoor air quality. Representatives from various ASTM International committees, including C11 on Gypsum and Related Building Materials and Systems and E06 on Performance of Buildings attended the meeting, which was held during…
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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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The use of non-metallic plaster bases (lath) is growing in the construction industry, and minimum consensus standards are being set for installation, test methods and performance requirements. A task group within Subcommittee C11.02 on Specifications and Test Methods for Accessories and Related Products is currently developing three lath standards: ASTM WK24554 , Test Method for Non-Metallic…
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Engineers and researchers who have specialized Charpy testing needs will be the primary users of two new standards recently approved by ASTM International Committee E28 on Mechanical Testing. The new standards, E2248 , Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens, and E2298 , Test Method for Instrumented Impact Testing of Metallic Materials, were developed by…
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Working toward a standard practice for torque calibration that would reduce laboratory inconsistencies and uncertainties has led to the approval of a new ASTM International standard, E2428 , Practice for Calibration of Torque-Measuring Instruments for Verifying the Torque Indication of Torque Testing Materials. The new standard was developed by Subcommittee E28.01 on Calibration of Mechanical…