Flexible unit for repairing cracked part of concrete structure and maintenance method of cracked part using the flexible unit

摘要

In the present invention, in repairing leaks caused by cracks generated on the rooftop or wall of a concrete structure, the human and physical resources can be easily and quickly repaired without having to excavate the surrounding concrete of the cracked area. The present invention relates to a new construction unit for repairing cracked sites of a concrete structure and a method for repairing cracked sites using the new stretchable unit, which can significantly reduce the gap and fill gaps of cracked areas as much as the width of cracked areas after construction. It is made of soft rubber or urethane or metal material, and has one or more bends 110 to correspond to the width at which the crack is generated, and the elastic force is increased at one or more places laterally by the bends 110. The inner wall surface 31 of the cohesive force with the repair solvent formed in the lower and outer surfaces of the multi-stretching unit 120 and the multi-stretching unit 120 exerted inside the insertion space 30 and the insertion space 30. And an agglomeration portion 130 that improves the adhesive force with the bottom surface 32 in three dimensions.