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 rubber waterstop?
Rubber waterstop, made of quality SBR (styrene butadiene rubber), neoprene rubber or natural rubber, is one of the widest types for concrete structure to prevent liquid leaking in or out.
How does PVC waterstop work?
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.
Where do you put waterstops?
Waterstops are typically applied at below-grade construction joints (horizontal or vertical) that are subjected to hydrostatic pressure. They are embedded into the concrete and span the length of the joint.
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….
- High elasticity, excellent wear resistance.
- Aging resistance and tear resistance.
- Strong adaptability to deformation.
- Great waterproof performance.
How do you install waterstops?
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 waterproof cold concrete joints?
Bentonite is a swellable clay waterproofing compound that is glued or nailed in strips into construction joints. Known as a hydrophilic waterstop system, bentonite expands up to sixteen times its dry volume when it comes into contact with water, forming a compression seal in concrete joints.
What type of waterstop is used in concrete?
Rubber waterstops are most widely used type for concrete constructions. Rubber waterstop, made of quality SBR (styrene butadiene rubber), neoprene rubber or natural rubber, is one of the widest types for concrete structure to prevent liquid leaking in or out.
What is a rubber waterstop?
All the rubber waterstops are designed to cast in the concrete as an integral joint sealing system. Pre-fabricated waterstops are also supplied to reduce site jointing. SBR and neoprene rubber, as the most common materials for rubber waterstop manufacturing, are used extensively in United States and the worlds.
What is the best material for a water stop?
SBR and neoprene rubber, as the most common materials for rubber waterstop manufacturing, are used extensively in United States and the worlds. The SBR water stop is preferred for water containment, while neoprene rubber waterstops are recommend for applications of sewage disposal or chemical industries.
Are concrete structures watertight?
Concrete structures are only as watertight as the waterstops that join them. Structures such as water treatment plants, reservoirs, locks, dams, and below grade facilities, most likely have a waterstop system in place. Several factors must be considered when selecting a waterstop.