What is waterstop for concrete?

What is waterstop for concrete?

Waterstop is a material that is embedded in the concrete, across the concrete joint, to obstruct the passage of water through the joint. A waterstop installed in concrete joints is an important component of the overall waterproofing design.

What is a PVC waterstop?

PVC Waterstop FAQ Embedded in concrete, PVC Waterstops span the joint to form a continuous, watertight diaphragm that prevents the passage of liquid through the joint. The waterstop must be properly selected and installed to accommodate joint expansion, contraction, and other longitudinal and transverse movements.

How do you weld waterstop?

Preheat the iron to the desired temperature ranges. Place iron between butt ends. Keep waterstops in place until approximately 3/16” bead forms on each side of waterstops. Quickly remove splicing iron and gently press waterstops ends together until they bond (approximately 3 to 5 minutes or cool to touch).

How does a waterstop work?

Hydrophilic waterstops are adhered directly to the surface of the first concrete pour in preparation for the second concrete pour to form the joint area. The material in the strip reacts with water and swells to form a positive watertight seal in the concrete joint.

Where do you put waterstop?

To prevent this from occurring, waterstops are commonly specified and installed at every joint in the concrete below-grade. A waterstop installed in concrete joints is an important component of an overall waterproofing design to protect below-grade portions of a concrete structure.

How do I choose a waterstop?

We shall choose corresponding waterstops according to its application environments, such as corrosion resistance, acid and alkali medium and temperature requirements….

  1. High elasticity, excellent wear resistance.
  2. Aging resistance and tear resistance.
  3. Strong adaptability to deformation.
  4. Great waterproof performance.

How do I connect to Waterstop?

Waterstops are generally connected by two methods. One is the cold joint method for cold bonding with rubber adhesive, and the other is the hot joint method for welding joints with hot melt machine or hot melt knife. Flatten and rough two joints, and then apply a thin layer of sealant.

How do you install waterstop on concrete?

a one-fourth inch steel plate on a plumber’s torch. Apply the two cut edges of the waterstop to the plate and hold together until they have cooled completely. Rubber waterstops can be cold lap spliced by overlapping the ends of the waterstop and holding it together with bolting. Metal waterstops are spliced by welding.