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Sealant manufacturers will use a new ASTM International standard to evaluate new products and changes to these products due to exposure to weather. The new standard, ASTM C1735 , Test Method for Measuring the Time Dependent Modulus of Sealants Using Stress Relaxation, is under the jurisdiction of Subcommittee C24.20 on General Test Methods , part of ASTM International Committee C24 on Building…, ASTM Committee C24 Next Meeting:, Jan. 8-10, 2012, Ft. Lauderdale, Fla., Technical Contact:, Christopher C. White, Ph.D., National Institute of Standards and Technology, Gaithersburg, Md., Phone: 301-975-6016; christopher.white@nist.gov, ASTM Staff Contact:, Stephen Mawn, Phone: 610-832-9726; smawn@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #9005
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A new ASTM International standard, adopted from an American Concrete Institute test method, will be used to help ensure the safety of construction projects. ASTM C1741 , Test Method for Bleed Stability of Cementitious Post-Tensioning Tendon Grout, is under the jurisdiction of Subcommittee C09.41 on Hydraulic Cement Grouts , part of ASTM International Committee C09 on Concrete and Concrete…
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Piston ring/liner interface can contribute as much as half the total friction loss in internal combustion engines, with the resulting wear leading to reduced energy efficiency and raised emissions. A new ASTM International standard provides a method to more accurately measure small amounts of wear on curved piston ring segments and their counterfaces after lubricated bench-scale testing. “Coupled…
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Interlocking concrete pavements are extensively used in low-speed urban and rural roads throughout Europe and are seeing increased use as an alternative to asphalt and cast-in-place concrete in the United States. A proposed new ASTM International standard will address the management by city and county transportation agencies of roads made from interlocking concrete pavements. The proposed new…, ASTM Committee E17 Next Meeting:, June 5-6, 2011, State College, Pa., Technical Contact:, David R. Smith, Interlocking Concrete Pavement Institute, Herndon, Va., Phone: 703-657-6900, ext. 201; dsmith@icpi.org, ASTM Staff Contact:, Daniel Smith, Phone: 610-832-9727; dsmith@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8857
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Tribometers are used to assess the potential of humans to slip while walking on various surfaces. A new ASTM International test method will be used to provide a reference standard against which to validate and calibrate the performance of tribometers. ASTM F2508 , Practice for Validation and Calibration of Walkway Tribometers Using Reference Surfaces, has been developed by Subcommittee F13.10 on…
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Traffic monitoring is a means of counting and classifying vehicles and measuring vehicle flow characteristics, such as vehicle speed, lane occupancy, turning movements and other items typically used to portray traffic movement. In order for traffic monitoring data to be assessed properly, information on how the data were collected, edited, summarized and reported must be provided. This obligation…
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ASTM Committee G02 on Wear and Erosion is including a field trip in the plans for its Dec. 8-9 meeting in Jacksonville, Fla. Committee members will be visiting the Tribology Laboratory in the mechanical engineering department at the University of Florida in Gainesville. The Tribology Laboratory is actively involved in a wide variety of tribological research and tribology education projects. The…
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ASTM International Committee F13 on Pedestrian/Walkway Safety and Footwear is currently working on a proposed new standard for footwear designed for workers who do not necessarily need safety toe shoes but could use other protection such as puncture resistance, electrical shock protection and electrical grounding. The proposed new standard, ASTM WK27855 , Specification for Performance…
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A new ASTM standard will be useful to slide and engine companies, as well as makers of bushing materials, in studies that involve the measurement of system friction forces. The new standard, ASTM G203 , Guide for Determining Friction Energy Dissipation in Reciprocating Tribosystems, was developed by Subcommittee G02.50 on Friction, part of ASTM International Committee G02 on Wear and Erosion.…
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Since the appearance of the first California-type models around 1940, the profilograph has been a popular device used for quality control in the construction of pavements. Both roadway and airfield landing agencies have adopted roughness indexes computed from profilograph-derived measurements as a level of construction quality. Emerging high-speed inertial profilers can now quickly collect…