BENTONITE WATERSTOP > Bentonite waterstop NT (20mmX10mm,20x15mm)

Bentonite Waterstop NT is A flexible hydrophilic polymer rubber waterstop for construction joints and sealing precast elements that expands in a controlled fashion on contact with water. The bentonite clay in Bentonite Waterstop NT consists of tightly packed charged microscopic platelets. Between and within these platelets there is a separation of charges positive and negative. Water molecules are attracted to the unique clay structure of positive and negative charges and wedge themselves between the platelets causing them to separate & swell. The hydrated bentonite forms a seal preventing further migration of water. As hydrostatic pressure is increased the platelets compact forming a tighter seal.

USES & ADVANTAGES
Bentonite Waterstop NT is used to stop water infiltration through both vertical and horizontal non moving construction joints, irregular surfaces and around penetrations through concrete. It is not intended as an expansion joint sealant. It is designed to replace conventional waterstops in construction joints. The sodium bentonite in Bentonite Waterstop NT is the key to its success. Bentonite swells when in contact with water to form an impermeable barrier. A permanent pressure seal is formed.

Advantages include 
• Light weight flexible coils easy to install.
• Eliminates seem welding & split forming associated with PVC/rubber waterbars.
• Butt end joining, continuous waterstop.
• Forms a positive seal, sealing cracks & small voids.
• May use in potable water tanks. Non toxic.
• Can apply to irregular concrete surfaces.
• Compressible and malleable allowing for good contact in precast applications.
• Unaffected by repeated wetting & drying cycles.
• Does not deteriorate.
• Fast installation.
• Permanently active system.
• Ecologically safe & can be used in structures in contact with potable water.
• Self healing.