Urethane-Urea Copolymer Structure Repair And Reinforce Construction Method Using Urethane-Urea Copolymer

摘要

The present invention relates to a method to improve an earthquake-proof performance and to repair and reinforce a structure using a urethane-urea copolymer. More specifically, the present invention relates to a method to improve an earthquake-proof performance and to repair and reinforce a structure using the urethane-urea copolymer capable of being able to apply the urethane-urea copolymer instead of epoxy used for repair and reinforcing methods and to strengthen an adhesive strength; thereby making it possible to make a movement as a single body with the structure. According to the present invention, the method comprises: (a) a step of synthesizing an aqueous polyurethane resin (PUD); (b) a step of synthesizing a polyurea resin; (c) a step of removing foreign substances from the surface of the structure; (d) a step of spreading the aqueous PUD on the structure to form a first coating layer; and (e) a step of spreading the polyurea resin on an external side of the first coating layer to form a reinforcing coating layer.