The water swelling waterstop is a type of buried rubber waterstop. As the name suggests, it will expand when it encounters water. In addition to the performance of ordinary rubber waterstops, the main feature of this waterstop is that the inner waterproof line is made of special rubber with water swelling function. This enhances the density of the waterstop and the structure after the expanding rubber expands in water, making the waterproof and waterstop effect better.

After encountering water, the hydrophilic genes of the water swelling waterstop will react with water to form hydrogen bonds, expand on their own, and eventually slowly block the existing capillary pores, making the contact between them and the concrete interface tighter, thereby generating greater water resistance pressure and forming an impermeable plastic colloid.

The water swelling waterstop has the characteristics of high expansion ratio and strong mobility and replenishment performance. When placed in the construction joint after pouring, it has strong balance and self-healing function, and can self seal new small gaps caused by settlement. For completed projects, if there is water leakage in the gaps, the waterstop can be re sealed with a waterstop strip. The construction cost is low and the construction process is simple, with excellent corrosion resistance. Suitable for waterproofing function of concrete construction joints and post pouring joints. It is also suitable for waterproofing engineering of building component assembly joints, joint sealing, shield tunnel segment joints, and plate joint wall joints. It is widely used in various underground construction projects and water conservancy projects such as water storage tanks, sedimentation tanks, underground garages, basements, subways, dams, tunnels, culverts, flood control dams, etc.
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