REPAIRING AGENT FOR REINFORCING THE CONCRETE

摘要

PURPOSE: A repairing agent for reinforcing concrete is provided to ensure high strength after construction and to protect the inside and the outside of the concrete while recovering the performance of concrete with water resistance. CONSTITUTION: A repairing agent for reinforcing concrete comprises an A agent including polymeric MDI, polyol, and butylacetate and a B agent including polyoxypropylene diamine, diethyltoluene diamine, polyether polyol, and epoxysilane. The A agent is manufactured by the steps of: putting polymeric MDI in a reactor and raising the temperature of the reactor to 40°C; putting polyol in a reactor and raising the temperature of the reactor to 80 °C; performing a reaction at 80 °C for 2 hours; cooling the resultant to room temperature and adding butylacetate; and uniformly mixing the mixture for 15~25 minutes.