LW Water-Soluble Polyurethane Chemical Grouting Material for Water Conservancy

Product Introduction

Product Features

• Relatively low viscosity, good hydrophilicity, and can react rapidly with water to form a water-impermeable gel.
• Can be used for underwater operations and grouting in the case of seepage or water gushing.
• The solidified product has elasticity and can effectively adapt to the waterproof treatment of expansion joints.
• The solidified product has good low-temperature resistance, and can expand again when it meets water, with the function of expanding elastic water stop.
• Good environmental performance, belonging to the category of actually non-toxic products, and can be applied to more working conditions.
• Single-component packaging, ready to use after opening the barrel, without complicated preparation.
• Can be mixed with HW as required to prepare mixed grouts with different strengths and water expansion multiples.

Product Applications

• Anti-seepage and leakage-stopping treatment of various buildings in transportation, municipal, construction and other industries.
• Anti-seepage treatment of seepage and leakage in concrete expansion joints, cracks and construction joints in water conservancy and hydropower projects.
• Anti-seepage of building foundations or curtain grouting treatment.

Physical and Chemical Properties

Precautions for Use

• Joint Surface Treatment: Remove surface dirt to ensure the joint surface is clean, and check the direction and depth of the cracks.
• Setting of Grouting Holes: Drill inclined holes (45°) along both sides of the joint. The hole spacing is generally 20 - 30 cm to ensure that the slurry can effectively penetrate into the cracks or voids. Use compressed air to blow away the debris in the holes.
• Embedding Pipes and Sealing Joints: Use leak-stopping king or epoxy putty to embed grouting pipes (boxes) and seal the joint surface at the same time.
• Flushing Joints: Flush the joint surface with water pressure to understand the connection situation between each hole and check the sealing effect at the same time.
• Pressure Grouting: Conduct grouting under pressure. The grouting pressure is determined according to the design requirements, generally 0.2 - 0.4 MPa. The maximum pressure should not exceed the allowable value of the structure. For vertical joints, start grouting from the lowest point and proceed from bottom to top; for horizontal joints, proceed from one end to the other. When pure slurry appears in the adjacent hole, suspend grouting and tie off the pipeline; move the grouting pipe to the adjacent hole and continue grouting. Screen the slurry at the specified pressure until the grouting end standard is reached.
• Curing After Grouting: After the slurry is solidified, remove the grouting pipe and seal it with leak-stopping king or epoxy putty.
• The buyer must conduct tests in an environment consistent with the construction conditions before the formal project construction to ensure the reliability of the use of the compound material system in this specific project. During formal construction, it is regarded that the buyer has recognized the qualified performance inspection of the product. If the above operations are not followed, all responsibilities shall be borne by the buyer.

Packaging Specifications

Precautions for Storage (Use)

Shelf Life

Safety Precautions