THE COMPOSITION OF REPAIR MORTAR CONTAINING NITRITE BASED HYDROTALCITE(OR HYDROCALUMITE) AND CORROSION INHIBITIVE REPAIR METHOD OF REINFORCED CONCRETE STRUCTURE USING REPAIR MORTAR DESCRIBED ABOVE

摘要

The present invention relates to a mortar composition for sectional recovery containing nitrite-based hydrotalcite or nitrite-based hydrocalumite, and to a method for restoring reinforcing corrosion of reinforced concrete structures using the same. By incorporating and preparing hydrochlorumite, it is possible to extend the period of reinforcement corrosion by forming a multi-step function to block the reinforcement corrosion factor (chlorine ion), which is the main performance deterioration source of reinforced concrete structures, and to block it by ion exchange. This increases the service life of reinforced concrete structures, and it can omit a separate rust preventive process, so that the economic effect of reduction in manpower can be realized, and the mortar for sectional recovery containing nitrite-based hydrotalcite or nitrite-based hydrocalumite Furtherance And it is to provide a corrosion inhibiting repair method of the reinforced concrete structure using the same.;The present invention is a base treatment step to remove the deteriorated area and remove foreign substances on the concrete structure, 20 to 40 wt% cement, 1 to 5 wt% alumina cement, 5 to 20 wt% high powder filler in the ground concrete structure , 1-5 wt% of powdered polymer, 0.05-0.2 wt% of water reducing agent, 0.01-0.1 wt% of reinforcing fiber, 1-2 wt% of nitrite-based hydrotalcite or nitrite-based hydrochalumite, and the remainder made of silica sand It is a cross-sectional recovery step that is continuously sprayed or polished by mixing with water to form a multi-level barrier that can block and delay salts.