How to correct the inclination of the concrete plate on the subsidized ground

摘要

An object of the present invention is to provide a method for correcting the tilt of adjacent concrete slabs on subsided ground and connected at a joint part by tie bars or dowel bars caused by the subsidence of the joint part. The method of the present invention as a means for resolution comprises a step of pushing up a tilted concrete slab by: with respect to concrete slabs adjacent to each other across a subsided joint part, drilling an injection hole for injecting an expandable resin in one concrete slab at a point 10 to 200 cm away from the joint part and also in the other concrete slab at a point 10 to 200 cm away from the joint part, the point in the other concrete slab being on a line that is orthogonal to the joint part and has the point in the one concrete slab thereon; simultaneously starting an operation of intermittently injecting an expandable resin from both of the injection holes; and expanding the expandable resin below both of the concrete slabs.