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Road/Paving Materials Standard addresses safe sample gathering.

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July 6, 2010 - Proposed standard ASTM WK26774, Practice for Sampling Bituminous Paving Material from a Truck by Means of a Mechanical Sampling Device, addresses safety concerns and need to obtain representative samples. It will enable user to collect more useful sample from almost any location within truck bed and deposit it in sample collection device sitting on ground. Primary users of ASTM WK26774, once it has been approved, will be asphalt producers wishing to obtain better samples in safer way.

Proposed ASTM Road and Paving Materials Standard to Aid in Gathering Samples


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ASTM International
100 Barr Harbor Dr., Box C700
West Conshohocken, PA, 19428-2959
USA



Press release date: June 29, 2010

W. CONSHOHOCKEN, Pa.-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 Methods of Sampling.

"It's almost physically impossible to get a true representative sample from a truck bed by just leaning over the edge with a shovel," says John Muhlke, D04 member and owner, HMA Lab Supply Inc. "Technicians constantly place themselves at risk for possibly falling into the truck bed while overextending their reach."

According to Muhlke, the proposed test method will enable a user to collect a more useful sample from almost any location within the truck bed and deposit it in a sample collection device sitting on the ground.

"Manual sampling more often than not will collect samples that have been segregated by the loading process, and these samples will not yield accurate test results," says Muhlke. The procedures described in the proposed new standard will allow the user to do the collection without having to approach the side of the truck bed and in a much more timely and accurate manner than if the collection were done manually.

Asphalt producers wishing to obtain better samples in a safer way will be the primary users of ASTM WK26774 once it has been approved.

Brian Johnson, chairman of D04.30 and accreditation program supervisor at the American Association of State Highway and Transportation Officials Materials Reference Laboratory, says that participation is always welcome. In addition to work on ASTM WK26774, the subcommittee is currently engaged in updating its standards with high-resolution photos or updated diagrams.

ASTM International welcomes and encourages participation in the development of its standards. For more information on becoming an ASTM member, visit www.astm.org/JOIN.

ASTM International is one of the largest international standards development and delivery systems in the world. ASTM International meets the World Trade Organization (WTO) principles for the development of international standards: coherence, consensus, development dimension, effectiveness, impartiality, openness, relevance and transparency. ASTM standards are accepted and used in research and development, product testing, quality systems and commercial transactions.

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

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