Bentonite Geosynthetic Clay Liner with 6m Width and ≥24ml/2g Swelling Index for Low Permeability Waterproofing

Introduction: Waterproofing Simplified, Performance Maximized
BentoSeal NB Sodium Bentonite Waterproofing Blanket represents a breakthrough in geosynthetic technology, combining natural sodium bentonite with advanced carrier geotextiles to create an intelligent, self-sealing barrier system. This innovative solution delivers unmatched waterproofing performance while significantly reducing installation time and costs compared to traditional methods.

What Makes BentoSeal NB Unique?
Our waterproof blanket features a precisely engineered layer of high-quality sodium bentonite encapsulated between two robust geotextile layers. When hydrated, the bentonite swells to form a continuous, low-permeability gel barrier that automatically seals punctures and seams. This unique self-healing capability ensures long-term reliability even in demanding conditions.

Key Product Advantages:

Superior Waterproofing Performance

• Achieves permeability coefficients as low as 5×10⁻¹¹ m/s

• Withstands hydrostatic pressures exceeding 1.0 MPa

• Provides waterproofing equivalent to 1 meter of compacted clay in just 6mm thickness

Exceptional Self-Healing Capability

• Automatically seals cracks and punctures up to 2mm wide

• Maintains integrity even under structural movement

• Self-sealing properties remain effective throughout the product's lifespan

Rapid Installation & Cost Efficiency

• Simple roll-out installation requires no specialized equipment

• Reduces installation time by up to 50% compared to conventional methods

• Eliminates the need for complex welding or mixing processes

Proven Durability

• Resists chemical degradation and biological attack

• Maintains performance across temperature ranges from -20°C to 60°C

• Excellent UV resistance for extended exposed installation periods

Technical Specifications:

• Standard unit weights: 4000g/m², 4500g/m², 5000g/m²

• Bentonite swell index: ≥24 mL/2g

• Peel strength: ≥65 N/100mm

• Tensile strength: ≥20 kN/m (machine direction)

• Roll widths: Up to 6 meters available

Applications:
Civil Engineering Projects

• Underground structures and basements

• Tunnel and subway systems

• Bridge abutments and foundations

Environmental Protection

• Landfill liners and caps

• Waste containment facilities

• Mining leachate ponds

Water Resources

• Reservoirs and irrigation canals

• Decorative water features

• Roof garden waterproofing

Installation Guidelines:

1. Prepare a smooth, compacted subgrade free of sharp protrusions

2. Unroll blankets with minimum 150mm side overlaps

3. Secure using mechanical fasteners on slopes exceeding 1:3

4. Backfill promptly to prevent UV degradation

Why Choose BentoSeal NB?

• Certified to international standards including ASTM and EN

• 20-year performance warranty available

• Technical support from design through installation

• Sustainable, natural material composition

Request a Sample or Technical Data Sheet Today
Discover how BentoSeal NB can provide reliable, cost-effective waterproofing for your next project. Contact our engineering team for project-specific recommendations and installation guidance.

BentoSeal NB: Intelligent Waterproofing, Installed with Confidence.

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Bentonite Geosynthetic Clay Liner with 6m Width and ≥24ml/2g Swelling Index for Low Permeability Waterproofing Images