Bentonite Waterproof Mat

Phone:18053450611
Geosynthetic waterproofing blanket is a type of soil engineering material used for preventing leakage in artificial lakes, landfill sites, underground garages, rooftop gardens, ponds, chemical storage yards, and more. It is filled with highly expandable sodium bentonite in a specially formulated composite.GeotextileBetween non-woven materials, the needle-punched bentonite waterproofing mat forms numerous small fiber spaces, preventing the bentonite particles from flowing in one direction. When encountering water, it creates a uniform, high-density gel-like waterproof layer within the mat, effectively preventing water leakage. Bentonite waterproofing geotextiles can be categorized by production process into: needle-punched sodium bentonite waterproofing geotextile, needle-punched film-coated sodium bentonite waterproofing geotextile, and adhesive sodium bentonite waterproofing geotextile. The needle-punched film-coated sodium bentonite waterproofing geotextile is a non-woven geotextile with a layer of high-density polyethylene applied to the outer surface of the needle-punched sodium bentonite waterproofing geotextile.Geotextile membrane。

Performance Features:

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

Its waterproofing performance is durable because sodium-based bentonite is an inorganic material; it does not undergo aging or corrosion even after a long time or changes in the surrounding environment.

Easy installation, short construction period – 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's easy to repair any waterproofing defects if found.

Unaffected by temperature - will not脆break under cold climate conditions.

Integrated - Waterproof materials and objects integration: Sodium bentonite has an expansion capability of 20-28 times when it meets water. Even if the concrete structure vibrates or settles, 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 particular impact on the environment, with excellent properties.

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

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

Operable at sub-zero temperatures (-20℃) where traditional waterproofing materials cannot be applied; also applicable on damp substrates (without standing water); not suitable for construction during rain or snow; not recommended for use with strong acidic or alkaline solutions for seepage prevention; due to its inorganic nature, bentonite offers superior durability compared to organic waterproofing materials.

Application:

Civil engineering (basements, green roofs) waterproofing and seepage prevention

Engineering (Landfill) Liner for Leachate Prevention

Water 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 penetration coefficient (cm/s) ≤ 5×10^-11

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