| 摘要 |
The present invention relates to a self-healing repair mortar composition and a method for repairing a concrete structure using same. the purpose for the present invention is to provide: the mortar composition for preventing cracks from occurring on cracking areas of the concrete structure using fly ash, bentonite, and PVA, and for sealing cracking areas of the concrete structure by its size after cracks occur; and the repair method capable of blocking degradation factors invaded from the outside and blocking or minimizing whitening effects using inorganic surface protection material along with the repair mortar composition, and thereby, being capable of well maintaining the beauty of the repaired surface after placement. The feature of the present invention is the self-healing repair mortar composition and the method for repairing a concrete structure using same, wherein the composition is characterized by comprising 10.0-35.0 wt% of cement, 4.9-23.0 wt% of fly ash, 1.0-2.0 wt% of bentonite, 0.1-0.4 wt% of polyvinyl alcohol (PVA), 0.09-0.3 wt% of a melamine-based plasticizer, 0.1-0.3 wt% of a naphthalene-based plasticizer, 0.01-0.1 wt% of a viscosity increasing agent, and 40.0-65.0wt% of aggregate. [Reference numerals] (S100) Step of removing damaged regions of a damaged concrete structure by chipping; (S200) Step of cleaning repaired regions of the concrete structure with high-pressure water; (S300) Step of repairing to have abilities of preventing cracks and sealing multiple cracks by crack sizes when cracks occur by placing self-healing repair mortar by mixing a self-healing repair mortar composition with water on the cleaned damaged regions; (S400) Step of curing the self-healing repair mortar; (S500) Step of repairing to have abilities of preventing carbonatization and blocking degradation factors invaded from the outside by applying inorganic surface protection material on the surface of the cured self-healing repair mortar; (S600) Step of curing the inorganic surface protection material |
