| abstract |
PROBLEM TO BE SOLVED: To provide a concrete repairing method capable of repairing concrete having cracks of various dimensions and having excellent adhesion between a filler in the crack and concrete. A first aqueous solution in which an alkali metal silicate is dissolved is allowed to enter a crack generated on the surface of hardened concrete, and then a metal salt belonging to Group 2 of the periodic table is dissolved. The aqueous solution 2 is infiltrated into the crack to repair the concrete. By containing the fine particle cement in the second aqueous solution, larger cracks can be closed earlier. [Selection] Figure 3 |