Bentonite Water Swellable Bar 20x25mm

About Bentonite Water Swellable Bar 20x25mm

A Bentonite Water Swellable Bar (20mm x 25mm) is a type of waterstop used in construction, particularly for waterproofing joints in concrete structures. The bar is made from bentonite, a natural clay material that swells when it comes in contact with water. This swelling action helps to create a tight seal, preventing water from seeping through the joint.

Key Features:

1. Material:

   • Made from sodium bentonite, a highly absorbent clay.

   • The bentonite has the ability to swell when exposed to moisture, which helps in blocking the passage of water.

2. Dimensions:

   • The 20mm x 25mm size you mentioned refers to the bar's width and height, which indicates its ability to fit into specific construction joints.

3. Usage:

   • Commonly used in construction joints (e.g., between precast concrete panels, walls, slabs, and foundations).

   • Ideal for areas where water pressure is expected, such as underground structures, basements, and water tanks.

   • It can be used in both horizontal and vertical joints.

4. Functionality:

   • The bar swells when exposed to water, forming an airtight and waterproof seal.

   • This swelling action allows the waterstop to accommodate some movement in the joint while maintaining its sealing function.

5. Installation:

   • Typically installed in the joint before pouring concrete, either by embedding the bar directly into the formwork or fixing it along the joint's perimeter.

   • It may be attached using adhesive or mechanical fasteners depending on the design requirements.

Advantages:

• Effective Waterproofing: It helps to ensure that water does not penetrate the joint, protecting the structure from potential damage caused by water ingress.

• Durable: Bentonite is highly resistant to water, and the swellable nature of the bar ensures that it maintains its effectiveness over time.

• Cost-Effective: Compared to some other waterproofing systems, bentonite-based waterstops are generally more affordable and easy to use.

Would you like more information on how to install it, or perhaps recommendations for suppliers? Let me know how I can assist you further!