Bentonite Waterproof Mat

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A膨润 waterproofing geotextile is a type of geosynthetic material used for preventing leakage in artificial lakes, landfill sites, underground parking garages, rooftop gardens, ponds, oil storage chemical yards, and other applications. It is filled with highly expandable sodium bentonite in a specially formulated compositeGeotextileBetween non-woven materials, geotextile pads made by needle-punching form numerous small fiber spaces, preventing the bentonite particles from flowing in one direction. When encountering water, they create a uniform, high-density gel-like waterproof layer within the pad, effectively preventing water leakage. Bentonite waterproof geomembranes can be categorized by production technology into: needle-punched sodium bentonite waterproof geomembrane, needle-punched coated sodium bentonite waterproof geomembrane, and adhesive sodium bentonite waterproof geomembrane. The needle-punched coated sodium bentonite waterproof geomembrane is a non-woven geotextile coated with high-density polyethylene on the outer surface of the needle-punched sodium bentonite waterproof geomembrane.Geotextile membrane。

Performance Features:

Compactness - Sodium-based bentonite forms a high-density diaphragm under hydraulic pressure. At a thickness of approximately 3mm, its permeability is below &×10ˉ11 m/sec, equivalent to 100 times the compactness of 30cm thick clay, and exhibits strong self-water retention properties.

Our waterproof performance is durable due to the inorganic nature of sodium-based bentonite, which does not undergo aging or corrosion even after a long time or changes in the surrounding environment.

Easy installation, short construction time – Compared to other waterproofing materials, installation is relatively simple and does not require heating or pasting. Just connect and secure with bentonite powder, nails, washers, etc. No special inspection is needed after installation, and it's easy to repair if any waterproofing defects are found.

Unaffected by temperature - will not become brittle in cold climates.

Integrated - Waterproofing Materials and Objects Integration: Sodium bentonite has an expansion capacity of 20-28 times when it meets water. Even if concrete structures undergo vibration and settlement, the bentonite within the GCL can repair cracks on the concrete surface up to 2mm in width.

——Bentonite is an inorganic material, harmless to humans and has no special impact on the environment, with excellent properties.

High performance-to-price ratio, with a wide range of applications. The product range can reach 6 meters, significantly enhancing construction efficiency.

Application Scope and Conditions: Suitable for municipal (landfill), hydraulic, and artificial lake construction, as well as underground waterproofing and seepage prevention projects.

Operable at sub-zero temperatures (-20℃) where traditional waterproofing materials cannot be applied; can be used on damp substrates (without standing water); not suitable for construction during rain or snow; not suitable for permeation prevention by strong acidic or alkaline solutions; due to its inorganic nature, bentonite offers better durability than organic waterproofing materials.

Application:

Civil engineering (basement, green roof) waterproofing and seepage prevention

Engineering (Landfill) Liner for Leachate Prevention

Water Engineering (artificial lakes, dams) - Seepage Prevention
Product Specifications:
Unit area ≥ 4000g/m², width 4m-6m.
Bentonite Waterproof Mat Technical Standards:

Bentonite expansion coefficient (ml/2g) ≥ 24

GCL unit area quality (g/m²) ≥ 4000

GCL longitudinal tensile strength (KN/m) ≥ 6

GCL Lateral Fracture Strength (KN/m) ≥ 6

GCL longitudinal tensile elongation (%) ≥10

GCL lateral tensile elongation (%) ≥10

GCL vertical permeability coefficient (cm/s) ≤ 5×10^-11

GCL剥离 strength (N/100mm) ≥ 40; GCL hydrostatic resistance test 0.4MPa, 1 hour, no leakage.