Chelfix PUR Injection is a two-component, solvent-free, low-viscosity polyurethane injection system. It is specially formulated to react with water, rapidly forming a strong, flexible seal capable of withstanding high hydrostatic pressures. Designed for both dry and wet conditions, it effectively seals cracks, joints, and voids in concrete, masonry, and rock structures.
Areas of Application
- Injection of wet/dry cracks in concrete, masonry, and brickwork
- High-pressure sealing against water leaks in:
- Retaining/diaphragm walls
- Dams, tunnels, and rock formations
- HDPE/LDPE membrane systems
- Pre-injection in NATM or TBM tunneling in wet environments
- Sealing of joints, voids, and segregation zones in concrete
- Soil stabilization and anchoring in saturated or dry gravel fills
- Curtain grouting behind porous reinforced concrete
- Suitable for potable water contact applications
Key Advantages
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- Solvent-free and filler-free formulation
- Rapid curing, adjustable with catalyst
- Excellent adhesion to wet and dry substrates
- Resistant to most acids, bases, fuels, and solvents
- High resistance to hydrostatic pressure
- Non-shrinking and non-toxic
- Compatible with potable water systems (BS 6920 compliant)
- Very low viscosity for deep crack penetration
