REINFORCING FIBER WOVEN FABRIC AND DETECTION OF NUMBER OF FRP LAMINATES IN CONCRETE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a reinforcing fiber woven fabric permitting the simple detection of the lamination state of a substrate after molded into an FRP, and to provide a method for detecting the arrangement direction and lamination number of reinforcing fibers in a substrate, after a concrete structure is repaired or reinforced with an FRP plate. SOLUTION: This reinforcing fiber woven fabric satisfies the following requirements (A) to (C). (A) Lateral auxiliary yarn groups are placed on both the sides of a reinforcing multi-filament yarn sheet obtained by arranging reinforcing multi-filament yarns not having such a curve as concentrating stresses into a sheet-like shape in one direction and in parallel to each other, and the lateral auxiliary yarn groups form a woven tissue together with longitudinal auxiliary yarn groups parallel to the arranged reinforcing multi-filament yarns to integrally hold the yarn groups. (B) The adjacent reinforcing multi-filament yarns have spaces of 0.3-2 mm therebetween. (C) Metal wires are inserted.