Shri Krishna Associates

PU Grouting is a specialized technique that involves the injection of expanding Polyurethane to stop any water flowing down or through cracks or to fill voids under slabs, concrete joints or behind concrete walls and joints. PU Grouting is one of the oldest repair methods uses Polyurethane chemical grouts that react with water to either bond with the concrete to form watertight, permanent seals or to become rigid, filling voids and stabilizing soil. Polyurethane chemical grouts are usually injected under pressure as a liquid resin into or in the vicinity of the leak. Once the resin contacts water, a chemical reaction occurs. Depending on the material formulation, the grout/ water combination forms either an expansive closed cell foam or a gel. The foam created can be flexible and resilient or ridged, meaning the cell structure of the foam crushes when compressed.