PVC WATERSTOPPER KW240-1 - High - Performance Waterproofing for Concrete Joints

1. Core Features

• Superior Material PerformanceAdopts high-quality flexible PVC composite, achieving a tensile strength of ≥11MPa and elongation at break of ≥260%—exceeding the basic requirements of GB/T 18173.2-2014 Polymer Waterproof Materials - Part 2: Waterstops. It retains excellent elasticity across -35℃ to 65℃, withstanding -25℃ low-temperature bending without cracking and high-temperature exposure (≤65℃) without brittleness. The water absorption rate is ≤0.4%, ensuring stable performance in long-term humid environments, and it resists erosion from weak acids (pH≥4), alkalis (pH≤9), and municipal/light industrial sewage, avoiding material degradation in corrosive settings.
• Specialized K-W Type StructureThe 240mm width optimizes coverage for medium-sized joints (e.g., underground utility tunnel segments, basement walls) without waterproof blind spots. The K-shaped outer frame enhances lateral shear resistance to withstand horizontal displacement up to 15mm; the W-shaped middle layer (wave-like structure) boosts longitudinal tensile capacity to adapt to minor vertical settlement. The 6-7mm thick wings (customizable) feature diamond-shaped anti-skid ribs, increasing bonding force with concrete by 35% compared to smooth surfaces and preventing displacement during pouring.
• Rigorous Performance ComplianceShore A hardness measures 63±4, balancing rigidity for easy installation and flexibility for deformation. After 72 hours of hot air aging at 105℃, tensile strength retention reaches ≥85% and elongation at break retention is ≥78%, demonstrating outstanding anti-aging durability. It meets the V-0 flammability rating (UL94 standard) and passes microbial erosion tests (GB/T 24346-2009), avoiding mold growth in long-term damp conditions. All indicators fully comply with industry waterproofing engineering standards.

2. Application Scenarios

• Municipal engineering: Underground utility tunnel segment joints, rainwater regulation tank circumferential seams, subway station auxiliary structure expansion joints, and large pipe trench connection seams;
• Water conservancy projects: Small reservoir dam auxiliary joints, irrigation channel main line seams, culvert expansion joints, and farmland water conservancy pond structural seams;
• Civil construction: High-rise building basement floor/wall joints, large retaining wall expansion seams, and prefabricated concrete component (e.g., shear wall) connections;
• Industrial facilities: Workshop floor medium expansion joints, medium storage tank (50-180m³) circumferential seams, and sewage treatment pool edge joints.

3. Installation and Advantages

• Efficient ConstructionThe flexible texture allows easy cutting and bending to fit linear, curved, or right-angle joints—no special shaping tools required. Installation can be completed using ordinary steel bar clamps or template pressing; on-site joints are sealed with hot-melt welding (300W PVC welding gun) or specialized waterproof adhesive, ensuring the integrity of the waterproof system. It is highly compatible with concrete pouring processes, reducing joint waterproofing construction time by 20-25% compared to traditional single-structure waterstops.
• Cost-Effective DurabilityInsoluble in water, industrial oils, and common chemical solvents, the product maintains stable waterproof performance for over 35 years under normal use, significantly reducing long-term maintenance costs. Its 240mm width and K-W structure reduce on-site joints by 30% compared to 180mm-wide waterstops, lowering material waste and labor costs, and achieving overall project cost savings of 15-20%.
• Reliable Quality AssuranceEach batch undergoes third-party testing for tensile strength, low-temperature flexibility, aging resistance, and chemical resistance (100% qualification rate). Finished products are packaged in 20m rolls (customizable) with moisture-proof film, facilitating transportation and on-site storage. It fully meets the acceptance requirements of GB 50208-2022 Code for Acceptance of Construction Quality of Building Waterproofing Engineering and provides a 10-year quality guarantee.