Supply water swellable waterstop

NPJ water swelling waterstop

1. Specification and model: NPJ-1 (15 × 20mm)

NPJ-2（20×30mm）

NPJ-3（20×50mm）

(Different models can also be made according to user needs)

2. Main technical indicators

Project indicators

PN-150 PN-220 PN-300

Volume expansion ratio ≥ 150 220 300

High temperature fluidity (80 ℃ × 5h) No flowing No flowing

Low temperature test (- 20 ℃ × 2h) No brittle crack No brittle crack

3. Product features:

(1) The product is preset in concrete Construction joint On the interface of post poured joint, the expansion after secondary concrete pouring can completely block the joint water.

(2) The expansion speed is slow and the water pressure resistance is strong, which is suitable for use in rainy season and construction sites with abundant water.

(3) The construction method is simple, and the operation according to the construction method can play the role of waterproof and impermeable.

(4) The main material is inorganic mineral raw material, which has the characteristics of aging resistance, corrosion resistance, purity, etc.

4. Scope of application

(1) Seepage prevention of concrete construction joints

(2) Seepage prevention of building component assembly joints

(3) Caulking and sealing of segment joints and other joints of shield tunnel

(4) Water stop of slab joint wall gap