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New Task Group Will Define Use of Synthetic Fibers in Concrete

The Fiber-Reinforced Concrete Subcommittee of ASTM Committee C09 on Concrete and Concrete Aggregates has established a Task Group on Synthetic Fibers in Concrete to take the guesswork out of applications.

“The goal of this TG is to define the fibers appropriate for concrete reinforcement made from ‘synthetic’ filaments, such as polypropylene, nylon, and carbon, and to limit the definition to said materials (if possible) to simplify the parameters needed to standardize the products,” said task group chairman Melvyn A. Galinat, FACI, manager, Business Development, SI Concrete Systems, Mableton, Ga.

According to Galinat, approximately 15 percent of all ready-mix concrete produced in the United States has synthetic fibers. The concrete design and construction technology being standardized by the task group will “identify a group of prescriptive reinforcing products” that the American Concrete Institute 318 Building Code Committee can formally recognize, he said.

“Ultimately, the 318 Code recognition will bring widespread applications for synthetic fibers in reinforced concrete structures,” Galinat explained. “We have experienced to this day entrepreneurs that ‘oversimplify’ the technology and add any fibrous material to concrete with potentially deleterious consequences.”

For further technical information, contact Melvyn A. Galinat, FACI, Business Development, SI Concrete Systems, Mableton, Ga. (phone: 770/739-8991). Committee C09 meets Dec. 2-5 in Dallas, Texas. For membership or meeting details, contact James P. Olshefsky, manager, ASTM Technical Committee Operations (phone: 610/832-9714). //

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