Building Materials

Water-swelling sealant is a kind of polyurethane variety non-stereotypes paste which is one-component and solvent-free. So it is also called one-component polyurethane water-swelling sealant. And it is used in the sealing structural joints. It has two sealing and waterproof mechanisms, which make it play a key role in waterproofing. It has the elasticity of rubber and swells encountering water to fill the joint when water enters into the joint. The unique advantages make water-swelling sealant have very wide application areas in the actual projects. The state of non-stereotypes paste makes water-swelling sealant suitable for the sealing and waterproofing of irregular surface joints and makes the operation easier. And water-swelling sealant is suitable for sealing and waterproofing of such positions as different materials, small operating space, high construction difficulty, damp and pile head. The swelling volume encountering water is 220% larger than the original volume. It is not saggy, so it is suitable for vertical plane construction. Water-swelling sealant can be divided into two kinds according to the swelling ratio: PJ220 and PJ400.
Features:
Good waterproofing performance. It has double sealing and waterproofing mechanisms: elasticity of rubber and swelling encountering water. And it is resistant to strong water pressure which is up to 1.5 MPa.
Good durability and low weight change ratio.
Easy to operate. It is one-component paste, so it can be used with standard caulking gun.
Excellent adhesion effect. It can be glued on the concrete surface firmly whether the base plane is damp, smooth or tough.
Environmentally friendly. It is resistant to chemicals, such as hydrochloric acid, salt water, sodium carbonate and potassium hydroxide. It is nontoxic and safe to human bodies.
High cost performance. Its sealing and waterproofing performance is better than that of the traditional waterproofing materials. What& acute;s more, its price is reasonable.