High-performance Water Swellable Bar 25x25mm

About High-performance Water Swellable Bar 25x25mm

A Water Swellable Bar 25x25mm is a high-performance hydrophilic sealing strip made from bentonite clay or rubber-based swellable materials designed to prevent water ingress in concrete joints, pipe penetrations, and other vulnerable areas in construction. The 25x25mm size indicates a larger cross-section, ideal for sealing wider or deeper joints and handling higher water pressures.

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Product Overview Water Swellable Bar 25x25mm

Dimensions:

• Width: 25mm

• Height/Thickness: 25mm

• This larger size provides greater swelling capacity and stronger water resistance, ideal for critical sealing zones.

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Key Properties:

1. Swelling Capability:

   • Swells up to 300%400% of its dry volume when exposed to water.

   • Forms a tight, pressure-resistant seal inside joints and cracks.

2. Composition Options:

   • Bentonite-Based: Natural clay that swells on water contact.

   • Rubber-Based (Hydrophilic Rubber): Offers elasticity and chemical resistance in addition to swelling.

3. Self-Sealing:

   • Automatically activates on contact with waterno primer or external treatment required.

4. Flexible & Durable:

   • Accommodates minor structural movements without losing sealing performance.

5. Chemical Resistance:

   • Resistant to a wide range of chemicals found in groundwater or construction environments.

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Applications:

• Construction Joints in concrete (vertical or horizontal)

• Basement Walls & Foundations

• Tunnels, Dams, Reservoirs

• Water Tanks & Sewage Treatment Plants

• Pipe and Duct Penetrations through concrete

• Precast Elements joints and lift shafts

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Advantages:

• High Swell Volume: Fills voids efficiently even in large or uneven joints.

• No Maintenance Required

• Simple Installation

• Cost-Effective Waterproofing

• Long Service Life

• Environmentally Friendly (especially bentonite versions)

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Installation Tips:

1. Surface Preparation:

   • Clean the concrete surface of dust, oil, and loose particles before placing the bar.

2. Fixing Method:

   • Use nails, adhesive glue, or mesh wire to secure the bar to the concrete surface or formwork.

   • Ensure full contact with the joint surface.

3. Joint Overlaps:

   • Overlap ends by at least 50mm or use a butt joint with adhesive to prevent water bypassing.

4. Concrete Cover:

   • Ensure a minimum 50mm concrete cover around the bar to allow for safe expansion and containment.

5. Avoid Premature Swelling:

   • Protect bars from water exposure before concrete pouring (cover with plastic if needed).

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Would you like to compare bentonite vs. hydrophilic rubber water swellable bars, or need a spec sheet for 25x25mm bars for a tender or site use?

Superior Waterstopping for Concrete Joints

Engineered to deliver high swelling capacity, the 25x25mm Water Swellable Bar ensures comprehensive sealing performance in concrete construction joints. Its remarkable swelling behavior upon water contact guarantees reliable waterstopping even in challenging conditions, offering lasting protection against infiltration.


Engineered for Versatility and Durability

With its wide temperature tolerance and exceptional elongation properties, this water swellable bar remains resilient and effective through seasonal changes. Manufactured from premium synthetic rubber polymer, each bar offers superior durability, making it the preferred choice for diverse infrastructure projects across India.