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An effort currently under way by the U.S. Federal Highway Administration to set national standards for minimum maintained retroreflectivity levels for pavement markings has illustrated the need for a practical protocol to measure such levels. In response to this need, ASTM International Committee D04 on Road and Paving has developed ASTM D7585/D7585M , Practice for Evaluating Retroreflective…
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Safety concerns and the need to obtain representative samples are the driving forces behind a proposed new standard being developed by ASTM International Committee D04 on Road and Paving Materials. The proposed new standard, ASTM WK26774 , Practice for Sampling Bituminous Paving Material from a Truck by Means of a Mechanical Sampling Device, is under the jurisdiction of Subcommittee D04.30 on…, ASTM Committee D04 Next Meeting:, Dec. 7-9, December Committee Week, New Orleans, La., Technical Contact:, Brian Johnson, AASHTO Materials Reference Laboratory, Gaithersburg, Md.; Phone: 301-975-6423; bjohnson@amrl.net, 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 #8612
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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…
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The need for a standard test method that would allow the determination of the complex shear modulus of bituminous mixtures using relatively inexpensive laboratory equipment has led to the development of a new ASTM International standard, ASTM D7552 , Test Method for Determining the Complex Shear Modulus (G*) of Bituminous Mixtures Using Dynamic Shear Rheometer. According to Gerald Reinke,…, ASTM Committee D04 Next Meeting:, June 8-10, June committee week, St. Louis, Mo. Technical Contact: Gerald Reinke, MTE Services Inc., Phone: 608-779-6304; greinke@mathy.com 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 #8457/Jan2010
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More frequent worldwide use of asphalt-rubber binders in road building has increased the need for rotational viscotesters, which are used to ensure proper quality control and assurance. While an appropriate standard for viscotesters does not currently exist, a proposed new ASTM standard will answer this need. The proposed standard, WK25108 , Test Method for Measurement of Apparent Viscosity of…
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A proposed new standard being developed by ASTM International Committee E17 on Vehicle-Pavement Systems will be the first to describe how truth-in-data should be applied to traffic monitoring data collection, summarization and reporting. WK25280 , Practice for Highway Traffic Monitoring Truth-in-Data, is under the jurisdiction of Subcommittee E17.52 on Traffic Monitoring. Current traffic…
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Test for Solubility of Asphalt Materials in n-Propyl Bromide A new ASTM International standard on solubility of asphalt will provide an alternative for a solvent that has been banned as an ozone depleter by the Kyoto Protocol, an international environmental treaty with the goal of stabilizing greenhouse gas concentrations that may help minimize global warming. The new standard, ASTM D7553 , Test…
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Being able to compile and interpret data on how traffic turns through an intersection could have an impact on future environmental and safety decisions regarding intersection geometry and traffic control. However, until recently no standard has existed to properly obtain and use this data. Now, ASTM International Committee E17 on Vehicle-Pavement Systems has approved E2667 , Practice for…
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ASTM International Committee F37 on Light Sport Aircraft is currently at work on a proposed new standard that will aid light sport aircraft manufacturers in understanding the standardization system that governs their products. ASTM WK22124 , Guide for Compliance with Light Sport Airplane Standards, is under the jurisdiction of the F37.20 Airplane subcommittee. According to Thomas Gunnarson, U.S.…