Bentonite Waterstop

Description

Bentonite waterstop

Bentonite waterstop is an effective and efficient product based on active sodium bentonite, integrated into a highly elastic butyl rubber matrix. This product is specifically designed to prevent water infiltration and leakage at construction joints and cold joints in concrete pours. When the bentonite waterstop comes into contact with water, it expands automatically, effectively blocking water from passing through concrete joints.

To use this waterstop, it is first attached to the desired surface using adhesive or nails, after which the next concrete pour is done. Other applications of this waterstop include construction joints and areas where PVC waterstop has not been installed. It is important to note that this product is only suitable for construction joints, and its use in expansion or contraction joints is not recommended.

properties and effects Bentonite waterstop

• Ability to fill gaps and voids in concrete
• Suitable for use in sections with complex reinforcement
• Sealing of cold joints to protect the reinforcement
• Resistant to moisture, dampness, and continuous drying
• Consistent and flawless performance over time
• Easy installation without the need for overlap or welding
• Maintains its original shape under water pressure
• Can be applied to uneven concrete surfaces
• Delayed response in the swelling system
• High moldability and relative flexibility
• Non-toxic and safe for use in contact with water
• Swells automatically when in contact with water, preventing water infiltration
• Good resistance to temperature changes and environmental conditions
• Resistant to various chemicals

 

More products: water stops

 

Application Bentonite waterstop

• Sealing of construction joints in both vertical and horizontal surfaces
• Sealing of buried, semi-buried structures, and foundations
• Sealing around pipes and a suitable replacement for sealing flanges
• Sealing of tunnels, dams, swimming pools, and water channels
• Sealing of cold joints and uneven surfaces
• Suitable for sealing water and wastewater treatment plants
• Sealing of concrete pours and various construction joints
• Use in sealing load-bearing walls and shear concrete sections

Instructions for Using Bentonite waterstop

Before installing the Bentonite waterstop, the substrate surface must be thoroughly dry and clean, free of any dirt, dust, loose materials, grease, and other impurities. To attach the waterstop to the concrete, use a special adhesive designed for this purpose. In vertical or ceiling joints, it is permissible to use steel nails to ensure the strip does not detach from the concrete surface. Simply press the two edges of the strip together and secure them firmly, eliminating the need for overlapping.

Technical specification table

Color	Black
Volume increase ratio	200%
Specific gravity at 25 degrees	1/35 gr/cm3
Length change ratio	-+0.005%
Appearance change	No abnormality
Cold resistance test	No abnormality
size	20*30mm
Volume change after 7 days in water	at least 100%
Volume change after 14 days in water	at least 150%
Percentage increase in length	300%
Permeability rate	45mm
Standard	ASTMD217
Hydrostatic resistance	<m70

 

packing

5 and 7 meter rings