Waterproof Sodium Bentonite Geosynthetic Clay Liner For
Geoengineering Needs
Product Introduction
Sodium bentonite waterproof blanket (GCL) is a new type of
geosynthetic material, widely used in water conservancy,
environmental protection, transportation, railway, civil aviation
and other civil engineering. Its main components are graded natural
sodium bentonite particles and corresponding admixtures, which are
made by fixing the bentonite particles between two layers of
geotextile and plastic woven cloth by needling process.
Product Properties
1. Excellent waterproof performance: Sodium bentonite has a strong
water absorption, can absorb water equivalent to several times its
own weight, and expand to form a gel, effectively prevent water
penetration.
2. Low permeability: The permeability coefficient of sodium
bentonite waterproof blanket is very low, usually far below 1×10^-9
cm/s, which can provide long-term reliable waterproof effect.
3. Versatility: In addition to being waterproof and impermeable,
the sodium-bentonite waterproof blanket can also be used as a
geosynthetic material for other geoengineering applications such as
reinforcement, isolation and filtration.
4. Economy: Compared with other waterproof materials, sodium
bentonite waterproof blanket has a higher cost performance and can
reduce engineering costs.
Product Application
Sodium bentonite waterproof blanket is widely used in various
engineering projects because of its excellent waterproof and
impermeable properties. It can be used for the foundation treatment
and capping of landfill sites, the seepage prevention of artificial
lakes, reservoirs, channels, rivers, roof gardens, and the seepage
prevention of underground buildings such as basements, subways,
tunnels and underground passages. In addition, it is also suitable
for municipal engineering, subway, building underground engineering
and roof reservoir seepage prevention, as well as domestic waste
landfill, sewage treatment, industrial waste treatment, rivers and
lakes reservoir dam seepage prevention, plugging,reinforcement,
garden artificial lake golf course pond seepage prevention. At the
same time, in some projects in petrochemical, mining, agriculture
and other fields, sodium bentonite waterproof blankets are also
used as anti-seepage, anti-corrosion, anti-leakage, reinforcement
materials.
Product Specification
* Unit Weight: ≥4000g/㎡ (customized request accept)
* Width: 4m~6m
* Roll Length:
PS: Customized request accept for all above.
Product Specification and Technical Index (JG/T 193-2006)
| ITEM | GCL-NP
(Needle Puched Process GCL) | GCL-OF
(Needle Puched and Cocoon Process GCL) | GCL-AH
(Viscose Process GCL) |
| Unit Weight (g/㎡) | ≥4000
Not less than the specified value | ≥4000
Not less than the specified value | ≥4000
Not less than the specified value |
| Bentonite Swell Index (ml/2g) | ≥24 | ≥24 | ≥24 |
| Blue Clay (g/100g) | ≥30 | ≥30 | ≥30 |
| Tensile Strength (N/mm) | ≥600 | ≥700 | ≥600 |
| Elongatio At Max Load (%) | ≥10 | ≥10 | ≥8 |
Peel Strength
(N/100mm) | No-woven Geotextile&
Woven Geotextile | ≥40 | ≥40 | - |
PE Geomembrane &
No-woven Geotextile | - | ≥30 | - |
| Pesistance Hydraulic Pressure (m/s) | ≤5.0X10ˉ11 | ≤5.0X10ˉ12 | ≤1.0X10ˉ12 |
| Resistance Hydraulic Pressure | 0.4MPa,1h,No Leakage | 0.6MPa,1h,No Leakage | 0.6MPa,1h,No Leakage |
| Fluid Loss (m/L) | ≤18 | ≤18 | ≤18 |
| Durability Of Bentonite (mL/2g) | ≥20 | ≥20 | ≥20 |
