Water swelling and water-stopping glue have four characteristics

Water swelling and water-stopping glue have four characteristics

Water swelling water stop glue

Water-swellable water-stopping glue has four major characteristics: water volume expansion, moisture curing, filling voids, and elastic sealing.

Water-swellable water-stopping glue is a water-swellable, single-liquid, elastic sealant. It is based on a polyurethane pre-form and contains a specially grafted urethane. It has the double sealing and water stopping mechanism of elastic water stop of rubber and its own volume expansion and water stop after water. It is suitable for waterproofing of concrete construction joints and anti-leakage of various embedded components. Water-swellable water-stop glue can be cured in a humid environment. The curing time depends on the ambient temperature and humidity. The higher the temperature or the higher the humidity, the shorter the curing time. After the surface is hardened (dry to the touch), the next concrete pouring can be carried out.

Water-swellable water-stop glue has a volume expansion of water, and has good adhesion and filling properties. It can be cured in a humid environment. After solidification and forming, it has a double sealing and water stopping mechanism of water volume expansion and elastic sealing.

Water-swellable water-stopping glue is mainly used for industrial and civil construction underground engineering, municipal tunnels, protective works, mountain and underwater tunnels, underground railways, sewage treatment tanks and other construction joints (including post-casting belts), deformation joints and embedded components. Waterproofing, as well as leaking water treatment for existing works.

Water-swellable water-stop glue is also used for structural joint sealing and pipe leakage blocking, such as rough or smooth structural joints in concrete castings; seams between sealed preforms (such as inlet holes, box-type blind grooves, cables) Grooves, pipe trenches, etc.; joints around H-beams; gaps around sealing bolts or pre-cast holes; seals of orthogonal pile walls.

Water-swellable water-stop glue is not perfect, it also has disadvantages:

1. For fear of oil, the local finishing of the glue must be cleaned before construction.

2, the expansion of the water-proof plastic seal water demand must be a moment.

3. The curing speed of water-swellable water-stopping glue is affected by factors such as temperature, humidity and thickness of rubber.

4. The price of water-expanding water-stopping glue is relatively expensive, and the construction cost is slightly higher.