Carbon fiber rovings for reinforcement of concrete
AssigneesPetoca, Ltd., Takenaka Corporation
InventorsYoshikazu Nagata, Katsumi Takano, Sadatoshi Ohno, Toshio Yonezawa, Junichi Ida, Masaki Iwata
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Abstract
Carbon fiber rovings for reinforcement of concrete are here disclosed which are obtained by sizing, with a sizing agent, strands each consisting of 100 to 1,000 monofilaments of mesophase pitch-based carbon fibers, and then bundling the thus sized 5 to 100 strands into one roving.
Claims6
Concrete reinforced with carbon fibers, which is produced by molding cement mortar and carbon fiber rovings, which rovings consist of 5 to 100 strands each consisting of 100 to 1,000 monofilaments of mesophase pitch-based carbon fibers, each of said strands being sized with a sizing agent which is selected from the group consisting of ester oils, polyethylene glycols and polyether esters.
Concrete reinforced with carbon fibers, which is produced by molding by a direct spray method, cement mortar and carbon fiber rovings, which rovings consist of 5 to 100 strands each consisting of 100 to 1,000 monofilaments of mesophase pitch-based carbon fibers each of said strands being sized with a sizing agent selected from the group consisting of ester oils, polyethylene glycols and polyether esters.
Dependencies are inferred from the claim text.