Cement and PU (Polyurethane) injection grouting are versatile techniques used in construction and structural maintenance. These methods involve injecting specialized materials into cracks, voids, or cavities within buildings, bridges, or other structures to strengthen them, seal leaks, and restore their integrity. In this comprehensive guide, we will explore the applications, benefits, and techniques of cement and PU injection grouting.
Cement Injection Grouting:
Cement injection grouting, also known as cementitious grouting, involves the injection of a cement-based mixture into voids, cracks, or gaps within structures. It has several applications, including:
1. Structural Repairs: grouting can be used to repair and strengthen concrete structures by filling voids, cracks, or honeycombs.
2. Waterproofing: It is used to seal leaks in basements, tunnels, dams, and other structures to prevent water infiltration.
Polyurethane (PU) Injection Grouting:
PU injection grouting involves injecting a polyurethane resin into voids and cracks within structures. It has gained popularity due to its excellent sealing and waterproofing properties. PU injection grouting is commonly used for:
1. Waterproofing: grouting is highly effective in sealing leaks and preventing water infiltration in basements, tunnels, and other underground structures.
2. Crack Repair: can be used to repair cracks in concrete and masonry walls, providing a durable and flexible seal.
3. Void Filling: PU grouting is used for filling voids, gaps, and cavities to support sinking or settling structures.
