Pressure Grouting Injection

Pressure Grouting Injection

Concrete often cracks. It is inevitably recognized and experienced. Concrete construction requires construction joints and cold joints. All of these unwanted openings in concrete structures may cause very serious problems of water leakage. Most of these problems can be economically solved by utilizing the Pressure Injection Systems.

PU (Polyurethane) injection, is a cracks repair technique that injects polyurethane to prevent water seeping through voids or cracks typically in concrete. Polyurethane is a low viscosity resin and has a very short curing time. When injected into cracks or voids in concrete building structures, it reacts with water / moisture and expands become foams to seal off the cracks. The expansion of the PU can up to 30 times of its own volume. Polyurethane will cure and retain its flexibility, which allows for subsequent movement in the structure while keeping the voids sealed, hence preventing the leak from occurring.

This method is effective in solving water leakage issues, especially when applied on the beneath of the concrete slab seepage area or at the soffit where the leak occurs. 

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