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.

Founded in 2008, Jianyi group  is a large production base of solid waste safe landfill and engineering protective materials in China. The company has participated in the major infrastructure construction of the country and the "the Belt and Road", the construction of emergency epidemic prevention projects in Wuhan Huoshen mountain, Leishen mountain and Guangzhou Eighth People's Hospital, the national strategy for special treatment of heavy metals, the landfill and incineration of urban domestic waste, industrial waste, hazardous waste disposal and other environmental protection projects, provided a large number of high-quality new geotechnical environmental protection materials for the partners, and provided overall solutions for the project.

corporate culture

[Vision]

Become a world-class engineering safety system solution service provider!

[mission]

Make the project safer and the environment better!

[core values]

Integrity, innovation, pragmatism and efficiency! Professional and enterprising, achieving customers!