| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete repair method for readily repairing a crack in concrete.SOLUTION: In a concrete repair method of the present invention, an ultraviolet-curable composition is injected in a crack in concrete, and the ultraviolet-curable composition is cured using an ultraviolet spot irradiation device. The ultraviolet-curable composition should desirably contain a compound having a polymerizable unsaturated bond and a photopolymerization initiator. An ultraviolet radiation amount by the ultraviolet spot irradiation device should desirably be 10 J/cmor greater. The concrete repair method of the present invention allows simplified concrete repair, because the method enables direct injection of the ultraviolet-curable composition into a crack in concrete, and also efficient curing of the ultraviolet-curable composition in depth of the crack as the ultraviolet spot irradiation device is used.SELECTED DRAWING: None |
