▶ Core Product Features:

1. Triple Waterproofing: In the dry state, the self-adhesive layer bonds tightly to the concrete, forming an initial seal. Upon contact with water, the expanding component expands uniformly, filling gaps and forming a secondary waterproofing barrier. The rubber elasticity adapts to slight concrete deformation, maintaining a long-term seal and achieving an active waterproofing effect of "stopping water with water."

2. High-Adhesion Self-Adhesive Positioning: Features a pressure-sensitive adhesive layer with a bonding strength ≥0.3MPa. Simply peel off the release paper to directly adhere to the concrete surface. Precise positioning and minimal displacement reduce the need for steel nails, improving construction efficiency by over 40%.

3. Flexible Deformation Adaptability: With a Shore A hardness of 30-45 degrees and an elongation at break ≥400%, it adapts to concrete deformation caused by temperature changes and slight settlement, effectively filling gaps and preventing the formation of leakage channels.

4. Environmentally Friendly Adhesion and Compatibility: The self-adhesive layer is an environmentally friendly pressure-sensitive adhesive, odorless and free of harmful substances. It has good compatibility with substrates such as concrete and cement mortar, ensuring a seamless bonding interface and preventing aging or delamination over long-term use.

▶ II. Product Specifications and Models

1. Standard Cross-Section Dimensions (mm, custom shapes available)

15×20, 20×30, 20×40, 30×30, 30×40, 30×50 (Width × Height, adaptable to construction joints of different widths)

▶ III. Core Applicable Scenarios

Suitable for sealing regular and flat construction joints, post-pouring joints, and settlement joints in various building, municipal, and water conservancy projects. Especially suitable for projects with tight schedules and rapid construction requirements. Typical application areas:

1. Underground Engineering: Construction joints in basement slabs, exterior walls, and roofs; post-pouring joints in subway stations and underground pipe corridors;

2. Water Conservancy Engineering: Structural joints in water tanks, sluices, and pumping stations; construction joints in sewage treatment plant structures;

3. Municipal Engineering: Construction joints in integrated pipe corridors and urban bridge abutments; rainwater pumping stations and drainage pipe interfaces;

4. Industrial and Civil Buildings: Construction joints in the underground parts of large shopping malls and office buildings; airtight joints in civil defense projects; post-pouring strip joints.

Not suitable for: irregular narrow gaps, oil-contaminated surfaces, or environments where the surface is immersed in strong corrosive media (strong acids, strong alkalis) for a long time.

▶ Core Product Advantages

▶ Simplified Construction Guidelines

1. Base Treatment: Clean the concrete joint surface, removing laitance, dust, and oil. Ensure the surface is flat and dry (moisture content ≤ 8%). Level any uneven areas with mortar.

2. Positioning and Adhesion: Tear off the release paper along the center line of the joint. Adhere the self-adhesive side of the waterstop strip to the concrete surface, pressing evenly by hand to ensure a firm bond. The overlap length at joints should be ≥ 50mm. Compact and seal.

3. Auxiliary Fixing: For horizontal construction joints, reinforce with steel nails every 800-1000mm; for vertical construction joints, fix with steel nails every 500-600mm to prevent detachment.

4. Pouring Protection: When pouring concrete, avoid direct impact of the vibrator on the waterstop strip to prevent damage.

5. Curing and Sealing: After construction, cure the concrete promptly to ensure a tight bond between the waterstop strip and the concrete, forming a unified waterproof system.

▶ Quality and Testing Standards

The entire product manufacturing process adheres to the national standard GB/T 18173.3. Each batch undergoes comprehensive quality testing before leaving the factory. Key testing indicators include:

1. Appearance: Uniform black color, smooth surface, no impurities or bubbles on the self-adhesive surface, and the release liner is firmly adhered and easily peeled off;

2. Physical and Mechanical Properties: Shore A hardness 30-45 degrees, tensile strength ≥2.0MPa, elongation at break ≥400%, no cracks during flexural bending at -20℃;

3. Expansion Performance: Expansion ratio meets standards for the corresponding model, slow expansion performance meets requirements, and there is no swelling or detachment after immersion in water;

4. Adhesion Performance: Bond strength to concrete ≥0.3MPa, peel strength ≥5N/cm, and long-term adhesion retention rate after immersion in water ≥80%.

▶ Compared with ordinary waterstop strips

Implementation Standards