Bentonite Waterproof Mat

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Geosynthetic clay liner is a soil engineering material used for preventing leakage in artificial lakes, landfill sites, underground parking garages, rooftop gardens, ponds, oil storage chemical yards, and more. It is made by filling high-expansive sodium bentonite into specially formulated composite materials.GeotextileBetween non-woven materials, the needle-punched bentonite waterproofing pads can 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 waterproofing mats can be categorized by production process into: needle-punched sodium bentonite waterproofing mats, needle-punched coated sodium bentonite waterproofing mats, and adhesive sodium bentonite waterproofing mats. The needle-punched coated sodium bentonite waterproofing mat is a non-woven geotextile coated with high-density polyethylene on the outer surface of the needle-punched sodium bentonite waterproofing mat.Geotextile膜。

Performance Features:

Integrity – Sodium-based bentonite forms a high-density diaphragm under hydraulic conditions. At a thickness of approximately 3mm, its permeability is below &×10ˉ11m/sec, equivalent to the compactness of 100 times a 30cm thick clay layer, and possesses strong self-water-retaining properties.

The 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 project timeline—Compared to other waterproofing materials, it is relatively easy to install without the need for heating or adhesive. Simply connect and secure using bentonite powder, nails, washers, etc. No special inspection is required after installation, and it is also easy to repair any waterproofing defects that may be found.

Unaffected by temperature - will not crack in cold weather conditions.

Integrated - Waterproofing Materials and Objects Integration: Sodium bentonite has an expansion capacity of 20-28 times when in contact with 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 the environment, with excellent properties.

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

Applicable Range and Conditions: Suitable for municipal (waste landfill), hydraulic, artificial lake construction, underground waterproofing, and seepage prevention projects.

It can be applied even in sub-zero temperatures (-20℃) where traditional waterproofing materials cannot be used; it can also be applied on moist substrates (without standing water); however, it should not be applied during rain or snow. It is not suitable for applications that require resistance to strong acidic or alkaline solutions. Due to its inorganic nature, bentonite offers superior durability compared to organic waterproofing materials.

Application:

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

Engineering (Landfill) Liner for Leak Prevention

Water Conservancy Engineering (artificial lakes, dams) - Seepage Control
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 tensile 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, 1h, no leakage.