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Joint filler meets new ASTM D8139 standard

Based on independent AASHTO APEL evaluation and testing results, the manufacturer reports that its Nomaflex products exceed requirements of the recently published ASTM D8139, Standard Specification for Semi-Rigid, Closed-Cell Polypropylene Foam, Preformed Expansion Joint Fillers for Concrete Paving and Structural Construction.

“Nomaflex offers performance for the engineer, ease of use and less waste for the installer, while minimizing future maintenance and repairs for the end-user,” contends Nomaco Technical Sales Manager Larry Weimer. “We have had agencies, municipalities and concrete contractors [tell] our distributors they [will] only use Nomaflex going forward.”

ASTM D8139 requires more stringent tests than existing standards for joint fillers such as D1751 Standard Specification for Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Nonextruding and Resilient Bituminous Types), he adds. Additional testing and physical property requirements to meet the new standard include UV, freeze-thaw and heat resistance. ASTM D8139 also dictates less extrusion, higher compression recovery and significantly less water absorption than required for D1751 compliance.

“By exceeding the standards set in ASTM D8139, Nomaflex easily meets the most critical requirements of D1751 and can be used as an ‘equal to or better’ alternative in any concrete expansion joint filler application where Nonextruding and Resilient Bituminous Types are used,” explains Weimer. — Nomaco, Zebulon, N.C., www.nomaco.com/product/nomaflex.

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