About Sandhyaflex Water Swellable Bar

SANDHYAFLEX Water Swellable Bar

The SANDHYAFLEX Water Swellable Bar is a hydrophilic waterproofing strip designed to prevent water leakage through concrete construction joints. When exposed to water, it expands and forms a pressure-resistant seal, making it suitable for underground and water-retaining structures. (Sandhyaflex India Pvt Ltd)

Features

• Expands automatically when in contact with water.

• Swelling capacity up to 300600% (depending on the grade).

• High resistance to potable water, hard water, and saline water.

• Flexible enough to accommodate minor joint movement.

• Good resistance to aging and repeated wetdry cycles.

• Easy installation using adhesive and mechanical fixing where required. (Sandhyaflex India Pvt Ltd)

Applications

• Basements

• Water tanks and reservoirs

• Lift pits

• Retaining walls

• Tunnels

• Sewage treatment plants

• Dams

• Pipe penetrations

• Concrete construction joints and cold joints (sandhyaenterprises.co.in)

Available Sizes

Typical Technical Properties

• Material: Hydrophilic polymer/rubber compound

• Density: Approximately 1.361.40 g/cm

• Hardness: 50 5 Shore A

• Tensile Strength: 30 kg/cm

• Elongation at Break: 200%

• Swelling Pressure: > 600 kPa after 48 hours

• Water Absorption: 10% (Sandhyaflex India Pvt Ltd)

Installation

1. Clean and dry the concrete surface.

2. Apply the recommended adhesive.

3. Press the water swellable bar firmly onto the joint.

4. Secure with nails or clips if necessary.

5. Pour the next concrete layer after the adhesive has set. (Sandhyaflex India Pvt Ltd)

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