Reinforcement method that can improve the durability of concrete structures by using bidirectionally arranged carbon fiber sheets and impregnating resin with excellent adhesion

摘要

The present invention relates to a reinforcing method using bidirectionally arranged carbon fiber sheets to reinforce a structure, and to be more specific, a fixing warp whose surface is made of thermoplastic fiber yarn between a base warp made of carbon fiber yarn and a base weft yarn By interweaving the fixing wefts by heating and fixing them, it is easy to fix the weaving state and has excellent bonding strength, and it is possible to increase the amount of carbon fiber yarns constituting the base warp and base weft, so that the tensile strength and reinforcement compared to the general cross-weaving fabric sheet Using bidirectionally arranged carbon fiber sheets with increased strength, background treatment and cross-section restoration steps to clean the concrete surface, adhesion enhancement and flattening treatment steps for applying a primer to the concrete surface, and protrusions or steps among the primer-applied surfaces The unevenness adjustment step of applying a putty agent to the part, the primary resin coating step of applying the first impregnation resin having excellent adhesion to the surface on which the primer and putty agent are applied, and bidirectionally arranged carbon fiber sheet on the surface of the first impregnation resin Adhesion and defoaming step of attaching, a secondary resin coating step of applying a second impregnation resin having excellent adhesion to the surface of the bidirectionally arranged carbon fiber sheet, and a curing step of curing the first impregnation resin and the second impregnation resin The technical field related to the reinforcement construction method that can improve the durability of concrete structures by using bidirectionally arranged carbon fiber sheets with excellent durability and workability and impregnating resins with excellent adhesive strength satisfying high-strength adhesion strength by including is initiated