Water stop swelling polyurethane sealants are usually for waterproofing of construction joints in railway tunnels, highway tunnels, urban subways, underground structures of buildings, sewage treatment pools and various underground structures. It has both sealing and expansion properties and is particularly suitable for waterproofing of cracks and gaps and irregular base surface joints. Water-stop swelling sealant is very common for engineering construction. Do you know anything about this sealant?
1. What is water swelling sealant?
Water swelling polyurethane sealants are one-component, water-swelling elastomeric sealants. It is based on the prepolymer of polyurethane and contains a special water-swelling unit. It has elastic rubber sealing water and is a one-component, water-swelling elastomeric sealant. Suitable for waterproofing of concrete construction joints.
2. Features of swelling sealant:
- Good water-stopping effect: it has the elastic sealing water of rubber and the double sealing water-stopping mechanism of its volume expansion. Water stops after water and can resist water pressure of 2.5Mpa.
- Good expansion: high expansion rate, reaching more than 220% or 400%.
- Convenient construction: single component, glue, and standard caulking gun are available.
- Construction tight & close: It can be firmly attached to the concrete surface regardless of whether the base surface is wet, smooth, or rough.
- Safe and environmentally friendly: Safe, and non-toxic, it is an environmentally friendly product in contact with drinking water.
- Cost-effective: The performance is better than the traditional construction joint waterproof material, such as steel edge rubber water-stop glue or tape, the price is reasonable.
3. Water swellable sealant application
- Railway tunnels, road tunnels, urban subways, underground structures of buildings, sewage treatment tanks, etc.
- The construction joints of various underground structures are waterproof.
- The underground structure is watered after the pouring.
- All kinds of pre-buried pipelines, through-wall steel bars, H-beams, pile caps, and other waterproof.
- Various types of construction joints or leaking structural cracks.