Bentonite waterproof blanket (GCL)
Bentonite waterproof blanket (GCL)

Bentonite composite waterproof material
GCL (Geosynthetic Clay Liner) is a new type of geosynthetics, consisting of a layer of bentonite sandwiched between two layers of geotextiles. It has excellent anti-seepage performance, self-healing ability and durability, and is widely used in various anti-seepage projects.
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Product Description

Mainly composed of bentonite and other materials, it has many advantages:

Excellent waterproof performance: It can effectively prevent moisture infiltration and form a durable and reliable waterproof layer.

Strong adaptability: able to adapt to different terrains and grassroots conditions.

Self repair ability: Small cracks and damages can automatically repair when exposed to water.

This material is commonly used in the following scenarios:

Underground building waterproofing: such as basements, underground parking lots, etc.

Tunnel engineering: ensuring the dryness and structural safety inside the tunnel.

For example, in the construction of a large commercial basement, the use of bentonite composite waterproof materials can ensure that the basement is not invaded by groundwater even under complex geological conditions; In tunnel construction, the use of this material can effectively prevent leakage of tunnel walls and reduce the impact on tunnel structure and functionality.


Projects/ Technical data

Specifications

GCL-NP

GCL-OF

GCL-AH
Weight per unit area(g/m2)

≥4000g/m2

Bentonie swell index(ml/2g)

≥24

≥24

≥24

Ethylene blue absorption(g/100g)≥30

≥30

≥30

Tensile strength (N/100mm)

≥600

≥700

≥600

Racking strength(N/100mm)

(for nonwovwn and woven fabric)

≥40

≥40

Racking strength(N/100mm)

(for HDPE films and nonwoven fabric)


≥30

Permeability(m/s)

≤5.0x110-11

≤5.0x110-11


anti-static water pressur

0.4Mpa,1h,

not seepage

0.6Mpa,1h,not seepage

filtration loss (ml)

≤18

≤18

≤18

Bentonite durability (ml/2g)

≥20

≥20


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