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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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Polymer matrix composites are widely used in a variety of civil engineering projects, including highway construction and concrete pavements. ASTM Subcommittees D30.05 on Structural Test Methods and D30.06 on Interlaminar Properties are both working on proposed new standards that involve fiber reinforced polymer matrix composites. The subcommittees are under the jurisdiction of ASTM International…
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All interested parties are invited to attend a Sandwich Construction Workshop on Wednesday, March 12, at 4:30 p.m., in Melbourne, Fla. The workshop is being held by Subcommittee D30.09 on Sandwich Construction, part of ASTM International Committee D30 on Composite Materials. Committee D30 is meeting in conjunction with Marine Applications of Composite Materials from March 12-14 at the Crowne…
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A new ASTM International standard will enable composite end users and materials suppliers within the aerospace industry to perform an important test for polymer matrix composites within guidelines set by the U.S. Federal Aviation Administration. The standard, D7028 , Test Method for Glass Transition Temperature (DMA Tg) of Polymer Matrix Composites by Dynamic Mechanical Analysis (DMA), is under…
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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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Subcommittee D30.05 on Structural Test Methods, part of ASTM International Committee D30 on Composite Materials, has been standardizing a series of methods that are related to the analysis and substantiation of mechanically fastened joints composed of composite materials. The latest in this series of standards, D 7332/D 7332M , Test Method for Measuring the Fastener Pull-Through Resistance of a…
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The market growth and wide acceptance of glass mat gypsum panels has led to the development and approval of a new ASTM International standard. C 1658/C 1658M , Specification for Glass Mat Gypsum Panels, is under the jurisdiction of Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products, which is part of ASTM International Committee C11 on Gypsum and Related Building Materials…