How does bentonite waterstop work?
The key to WATERSTOP-RX is sodium bentonite. Sodium bentonite swells when in contact with water, forming an impermeable barrier. This swelling property allows WATERSTOP-RX to form a permanent pressure seal within the concrete joint, thus eliminating water migration over or along the waterstop (see Figure 1.1).
What is Volclay waterstop?
Volclay Waterstop RX® is a flexible strip concrete construction joint sealant that provides a permanent watertight seal by expanding upon contract with water. In most applications, Waterstop RX® is installed to the interior side of the outer row of steel reinforcement to allow for sufficient concrete coverage.
What is the purpose of a water stop?
A waterstop is a material embedded in the concrete, with the singular purpose to obstruct the passage of water through the joint. In other words, it is not an elastomeric sealant adhered to the exposed surface of a joint.
What is hydrophilic waterstop?
Hydrophilic waterstops are elements of a concrete structure, intended to prevent moisture infiltration. Hydrophilic means “water-loving”, so these hydrophilic waterstops swell in the presence of moisture. They can be used to seal concrete joints, but also to seal formwork spacers or tie rods.
What is bentonite water Stop?
Bentonite waterstop is a kind of hydrophilic water sealing product coming with incomparable durability and higher water absorption no less than 300%. Quality sodium bentonite clay and rubber materials. Moisture activated. Strong, durable with high cost effectiveness.
What is bentonite used for?
Bentonite is the active protective layer of geosynthetic clay liners. Drilling: Another conventional use of bentonite is as a mud constituent for oil and water well drilling. Its roles are mainly to seal the borehole walls, to remove drill cuttings and to lubricate the cutting head.
What is Volclay?
VOLCLAY bentonite soil sealants are granular and powder sodium bentonite that provides economical, low permeability soil liners for a wide variety of containment applications. Bentonite can withstand desiccation, hydration and freeze-thaw cycling without losing its sealing ability.
What is difference between water bar and water stopper?
These prevent passage of water from outside of the structure. External waterstops are usually used in piled wall basement construction. The primary functions of a waterbar is to act as a waterproofing seal in the joint. It allow movement of two sections independently of each other without restraint (free of tension).
What is the use of PVC water stopper?
PVC water stopper are mainly used for tunnels, bridges, storage tanks, water and waste water treatment plants, dams, culverts and other places. PVC water stopper are highly resistant to corrosion, so they are widely used for waste water treatment plants.
What is water stops in 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.
How do hydrophilic strips work?
HYDROPHILIC GASKETS SWELL in contact with water. During this process the SikaSwell® waterstop exerts pressure on the surrounding surfaces and seals the construction joint against water penetration. SikaSwell® products are characterised by a reliable capacity and a reversible swelling process.