HW Water-Soluble Polyurethane Chemical Grouting Material for Dam Body

Product Introduction

Product Features

• Relatively low viscosity and good hydrophilicity, suitable for construction on wet substrates.
• Can be used for underwater operations, with good adhesion in seepage conditions.
• The solidified product has certain rigidity and can be used for reinforcement.
• Excellent environmental performance, actually non-toxic, applicable to more working conditions.
• Single-component packaging, ready to use after opening the barrel, without complicated preparation.
• Can be mixed with LW as needed to prepare mixed slurries with different strengths and water expansion multiples.

Product Applications

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

Physical and Chemical Properties

Precautions for Use

• Joint Surface Treatment: Remove surface dirt to ensure a clean joint surface 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 connectivity between the holes and check the sealing effect.
• Pressure Grouting: Perform grouting under pressure. The grouting pressure is determined according to design requirements, generally 0.2 - 0.4 MPa. The maximum pressure should not exceed the structural allowable value. For vertical joints, start grouting from the lowest point, from bottom to top; for horizontal joints, grout 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 the slurry solidifies, remove the grouting pipe and seal it with leak-stopping king or epoxy putty.
• Special construction techniques are required when water-soluble polyurethane chemical grouting materials are used for foundation treatment.
• Before formal construction, the buyer must conduct tests in an environment consistent with the construction conditions to ensure the reliability of the composite material system for the specific project. During formal construction, it is deemed 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

Storage (Use) Precautions

Shelf Life

Safety Precautions