Hydrophilic Swelling Waterstop

Hydrophilic Swelling Waterstop

Hydrophilic WaterSeal – WHL 205

Hydrophilic waterstops are made from unvulcanized thermoplastic elastomer (TPE) and are highly effective for sealing construction joints. These waterstops expand upon contact with water, reaching approximately 400% of their original volume after 14 days. The swelling process begins within 6 hours of water exposure.

A key point about hydrophilic waterstops is that they should only be used in construction joints and must not be applied in expansion joints. These waterstops are composed of water-absorbing materials, preventing water infiltration into critical structural areas.

Key Features and Benefits

• Provides waterproofing for concrete structures under water pressure up to 6 bar
• Reduces installation errors compared to PVC waterstops
• Offers reversible swelling in the presence of water
• Maintains structural integrity even at high temperatures
• Non-toxic and safe for use in potable water reservoirs
• Easy installation with minimal risk of error
• Cost-effective waterproofing solution

Applications

• Suitable for construction joints exposed to groundwater, surface water, and humidity
• Can be applied in both horizontal and vertical construction joints

Physical & Chemical Properties

Property	Value
Color	Black
Swelling Ratio (14 days)	150% (minimum)
Specific Gravity (at 25°C)	1.35 g/cm³
Elongation at Break	300%
Cold Resistance Test	No abnormal deformation
Size	20 × 30 mm
Water Permeability	45 mm
Hydrostatic Resistance	≥ 70 m
Standard Compliance	ASTM D 217

 

Installation Instructions

1. Surface Preparation: Ensure all surfaces are clean, dry, and free of loose particles before installation.
2. Placement: Position the waterstop manually into the designated groove in the concrete.
3. Clearance: Maintain at least 8 cm distance from the waterstop edges.
4. Fixation: Secure the waterstop using adhesive, nails, or screws at 25 cm intervals to prevent displacement.
5. Overlapping Ends: Overlap roll ends by at least 3 cm to ensure a continuous seal.
6. Additional Waterproofing: Apply a cementitious crystalline waterproofing layer to the substrate before installing the waterstop.
7. Joint Configurations:
   • Corner Joints: Cut the waterstop at a 45° angle and overlap the vertical strip over the horizontal strip.
   • Cross (+) Joints: Cut four sections at 45° angles, align them to form a cross, and secure with nails or screws.
   • T-Joints: Place two waterstop strips perpendicular to each other and fix them securely.
8. Concrete Pouring: Complete the concrete pour shortly after installation to maintain effectiveness.

Storage & Shelf Life

• Can be stored for up to 2 years in original packaging under normal environmental conditions.
• Protect from direct sunlight and excessive moisture.

Packaging

• 15-meter rolls