REINFORCEMENT METHOD FOR UNDERGROUND AND UNDERWATER STRUCTURES USING SOLVENT-FREE TYPE WET HARDENING REPAIR MATERIALS WITHOUT INFLUENCING ENVIRONMENT AFTER REPAIRING AND POLLUTING ENVIRONMENT

摘要

PURPOSE: A reinforcement method for underground and underwater structures using solvent-free type wet hardening repair materials is provided to improve work efficiency on the repair work for concrete and steel-skeleton structures and the reinforcement work for geological features. CONSTITUTION: The reinforcement method for underground and underwater structures using solvent-free type wet hardening repair materials comprises the steps of: supplying poly mixture composed of polyether polyol and polyester polyol and poly-isocyanate resins in a ratio of five to five weight percent using each pump(100); generating polyurethane free polymer by stirring wings(122) rotated by injection pressure by injecting the poly admixture and the polyisocyanate resins into a stirring housing(120) having stirring wings(122) and adding a reaction catalyzer such as tartar and amine, etc.; and sending out a solvent-free type wet hardening polyurethane repair materials reacted by adding a catalyzer to the polyurethane free polymer to a spraying pipe(130) coupled to the stirring housing(120), then spraying to the crack to be repaired and reinforced.