Pu Injection Grouting Process

What is PU Grouting or PU Injection, also known as Polyurethane Grouting Injection ?

PU grouting is a specialised 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. This method is very useful and effective when used on the underside or negative side of the water seepage, for example, from the underside of the leaking walls or the lower floor ceiling for issues involving upper and lower floor neighbours or in inter-floor water leakages.

A pre-drilled hole will be prepared on the underside of the ceiling, and the PU grout will be injected using low/high pressure. The grout will then expand to fully fill up the void, crack or space that is caused by the water damage. This PU injection can be used for concrete cracks or expansion joints that are actively leaking.

KEZU Water-soluble polyurethane leak plugging agent is a polymer chemical grouting plugging material produced by polymerization chemical reaction of polyisocyanate lipids and polyhydrocarbon polyethers.

KEZU Oil-soluble polyurethane leak plugging agent is a polymer chemical grouting plugging material generated by polymerization MDI chemical reaction of polyisocyanate lipids and polyhydrocarbon polyethers.

KEZU Modified epoxy chemical grouting fluid is a new chemical grouting reinforcing material with low viscosity and high strength. It is composed of modified epoxy resin and curing agent. Under the action of curing agent, it not only achieves the function of plugging, but also realizes the effect of reinforcement. It is suitable for repairing concrete gap and foundation grouting reinforcement of airport runway, reservoir, dam, port and wharf. Chemical grouting for tunnels, basements, air raid shelters, culverts and mines of underground works.And the internal and external crack plugging and reinforcement works of beam, slab, column structure, kitchen, bathroom, pool and swimming pool of civil buildings. Also repair and reinforcement of honeycomb defects in beams, slabs, columns and walls of building structures.