| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for suitably repairing cracks and the like of a concrete structure in a construction site by appropriately adjusting, for example, permeability and dripping property of a treatment agent according to temperature and a construction location.SOLUTION: A method for repairing cracks of a concrete structure is provided, in which a liquid A whose main component is epoxy resin, a liquid B whose main component is a hardener and a liquid C whose main component is modified urea are mixed while adjusting a mixing ratio of liquid A:liquid B:liquid C, in order to prepare a permeable-type repair composition whose ratio of viscosity measured by a B-type viscometer at 5 rpm at 23°C and at 50 rpm at 23°C (&eegr;5/&eegr;50) is 1.00 or more and less than 1.10, and also whose viscosity at 23°C is 100-1000 mPa s. Thereafter, the obtained permeable-type repair composition is applied on the surface of the concrete structure to allow the composition to permeate through fine crack parts and to be cured. |
