Investigators test fiber from THC-lite hemp with eye to rebar

Sources: Rensselaer Polytechnic Institute, Troy, N.Y.; CP staff One of the first projects at Rensselaer Polytechnic Institute’s (RPI) new Institute for Energy, Built Environment, and Smart Systems centers on innovative, cost-effective hemp processing technologies, leading to development of a conventional concrete rebar alternative. Researchers characterize hemp as yielding some of the plant kingdom’s strongest fiber, matching glass fiber pound for…

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Owens Corning banks reinforcing value, Buy America terms through Mateenbar

Owens Corning Infrastructure Solutions (OCIS) dispatched the first load of domestically produced Mateenbar Fiberglas Rebar in April to the site of an Ohio Department of Transportation project: the Industrial Drive Bridge, Henry County. OCIS is the exclusive North American distributor of the FRP product from Mateenbar USA’s new 130,000-sq.-ft. plant in Concord, N.C. The facility fabricates the lightweight, corrosion resistant…

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MMFX deal brings Commercial Metals deeper into concrete reinforcement

Sources: Commercial Metals Co., Irving, Texas; CP staff

Through its wholly owned subsidiary CMC Steel Fabricators Inc., Commercial Metals has acquired substantially all of the assets of Irvine, Calif.-based MMFX Technologies Corp., which markets and licenses production of proprietary steel products, including the ChrōmX line of high strength, corrosion-resistant rebar.

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Hughes Bros. deal brings Owens Corning division concrete-grade FRP

Sources: Owens Corning, Toledo, Ohio; CP staff

Owens Corning Infrastructure Solutions has acquired Aslan FRP, the concrete reinforcement business of Nebraska-based Hughes Brothers, Inc. Aslan produces and markets glass and carbon FRP (fiber reinforced polymer) products, also known as composite rebar, used to reinforce concrete in new or retrofit projects.

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New ASTM standard covers galvanized rebar

Source: ASTM International, West Conshohocken, Pa.

ASTM A1094/A1094M, Specification for Continuous Hot-Dip Galvanized Steel Bars for Concrete Reinforcement, details corrosion protection for zinc- or zinc alloy-coated rebar. “Galvanizing is a proven and effective way to protect reinforcing bar from corrosion, as it provides both barrier and galvanic protection to the steel substrate, [and] increases the chloride threshold,” says GalvInfo Center Director Gary Dallin.

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Arched profile increases steel fibers’ load-carrying capacity 20 percent


Sources: KoSteel, Seoul; CP staff

At its first World of Concrete, steel wire rod mild producer KoSteel showed a new take on concrete reinforcement: Bundrex steel fibers, .75-mm (1/32-in.) diameter in 50- or 55-mm sizes (2- or 2.16-in.) with 67-mm (2.66-in.) and 73-mm (2.87-in.) aspect ratios, fabricated in a patent-pending arch design. The company credits the configuration with increasing fibers’ load-carrying capacity in concrete structures up to 20 percent over conventional end hook steel products.

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