Polyurethane (PU) injection grouting is a versatile construction repair method that seals cracks, fills honeycombing, and waterproofs structures by injecting expanding resin under pressure. The grout penetrates deeply into voids and reacts to create a tough, watertight barrier that withstands hydrostatic pressure. Used in tunnels, bridges, dams, and building foundations, it offers rap... https://shakuraconstruction.sg/pu-injection-grouting-singapore/