Reinforcing fiber sheet and concrete structure using same

Stock material or miscellaneous articles – Layer or component removable to expose adhesive

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5230916, 5230917, 526491, 52664, 428113, 428114, 428212, 428217, 428220, 428703, 428902, 442 42, 442386, B32B 524

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active

056352638

ABSTRACT:
The present invention has an object to provide a reinforcing fiber sheet which permits sufficient reinforcement of a concrete structure with a smaller number of layers than in the conventional cases, without causing fracture of the sheet within a range of yielding of reinforcing bars. The reinforcing fiber sheet 1 of the invention comprises high-elasticity and high-elongation carbon fibers 4 having a modulus of elasticity of at least 35 ton/mm.sup.2 and a fracture elongation of at least 0.9%, arranged in an amount of at least 250 g/m.sup.2 in one direction through an adhesive layer 3 on a substrate sheet 2. The object of the invention can be achieved by providing the carbon fibers 4 of the reinforcing fiber sheet 1 with the above-mentioned properties.

REFERENCES:
patent: 4316925 (1982-02-01), Delmonte
patent: 4443507 (1984-04-01), Yamada et al.
patent: 4603157 (1986-07-01), Asai et al.
Derwent Publications Ltd., Database WPI Week 9131, AN 91-227208 and JP-A-3 146 717 (Tonen Corp.) 21 Jun. 1991.
Derwent Publications Ltd., Database WPI Week 8412, AN 84-071954 and JP-A-59 026 563 (Nitto Boseki) 10 Feb. 1984.

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