Description

Polyurethane (PU) grouting is a specialized technique used in construction and civil engineering to address various structural issues, particularly related to water ingress and soil stabilization. Here's a closer look at PU grouting: Purpose: PU grouting is primarily employed for waterproofing and sealing purposes. It's used to fill voids, cracks, joints, and gaps in structures, such as concrete walls, floors, basements, tunnels, dams, and underground structures, to prevent water infiltration. Material: PU grout consists of a two-component system: a polyol component and an isocyanate component. When these components are mixed, a chemical reaction occurs, resulting in the formation of a rigid, closed-cell foam that expands to fill voids and cracks. Injection Process: PU grouting involves injecting the grout mixture into the affected areas under pressure. Injection may be performed using specialized equipment such as pumps and injection guns. The grout expands to effectively seal the voids and create a waterproof barrier. Advantages: Excellent waterproofing properties: PU grout forms a durable and impermeable barrier against water infiltration. Ability to penetrate fine cracks: The low viscosity of PU grout allows it to penetrate even the smallest cracks and voids, ensuring thorough sealing. Minimal disruption: PU grouting is a non-destructive technique that minimizes disruption to the surrounding area, making it suitable for both new construction and retrofitting projects. Fast curing: PU grout typically cures rapidly, allowing for quick turnaround times and minimizing project delays. Applications: Waterproofing basements, tunnels, and underground structures. Sealing cracks and joints in concrete structures. Soil stabilization and consolidation in foundation repair projects. Void filling in abandoned pipes, culverts, and underground cavities. Quality Assurance: Proper application and quality control are essential for the effectiveness of PU grouting. It's crucial to follow manufacturer guidelines, ensure proper surface preparation, and conduct quality checks to verify the integrity of the grouted area.