Bentonite Geosynthetic Clay Liner (GCL)
Needle Punched GCL | ASTM D5993 & GRI-GCL1 Standard | Factory Direct Supply
Product Overview
Dezhou Shengyuan New Materials Technology Co., Ltd. is a leading manufacturer and supplier of high-performance Geosynthetic Clay Liner (GCL), also known as Bentonite Waterproof Blanket. Our GCL is an innovative composite anti-seepage material, which is manufactured by sandwiching 100% pure natural sodium bentonite between two layers of non-woven geotextile and woven geotextile, combined with advanced needle punching technology to form a stable and durable waterproof structure.
Once the bentonite particles absorb water, they will expand rapidly and form a uniform gel-like waterproof layer with ultra-low permeability, which can effectively prevent liquid leakage. Our GCL products fully comply with ASTM D5993, GRI-GCL1 and other international standards, featuring excellent self-healing ability, high tensile strength and long-term durability. It is widely recognized as the most cost-effective anti-seepage solution for global environmental protection, water conservancy, civil engineering and mining projects.
Key Features & Advantages
Technical Specifications (International Standard)
| Item | Unit | Test Standard | Specification Index | |||
|---|---|---|---|---|---|---|
| Unit Mass | g/m² | ASTM D5993 | 4000 | 4500 | 5000 | 6000 |
| Bentonite Content | kg/m² | ASTM D5993 | 4.0 | 4.5 | 5.0 | 6.0 |
| Tensile Strength | kN/m | ASTM D4533 | ≥8.0 | ≥10.0 | ≥12.0 | ≥15.0 |
| Peeling Strength | N/cm | ASTM D5993 | ≥1.5 | |||
| Permeability Coefficient | cm/s | ASTM D6766 | ≤5×10⁻¹¹ | |||
| Hydrostatic Pressure Resistance | m | ASTM D5993 | ≥0.5 | |||
| Expansion Index | mL/2g | ASTM D2980 | ≥24 | |||
| Width | m | - | 4.0 - 6.0 | |||
| Length | m/roll | - | 10 - 30 | |||
Field of Applications
Our Bentonite Geosynthetic Clay Liner (GCL) is widely used in various anti-seepage engineering projects around the world, providing reliable waterproof solutions for infrastructure construction and environmental protection projects:
Why Choose Dezhou Shengyuan GCL?
✅ Premium Raw Materials: We only use high-purity natural sodium bentonite with high expansion index, ensuring the best anti-seepage performance.
✅ International Certification: All products comply with ASTM D5993, GRI-GCL1 and other global standards, with complete quality inspection reports.
✅ Factory Direct Supply: As a professional manufacturer with 15+ years of experience, we provide competitive ex-factory price and stable supply capacity.
✅ Customized Service: Support customized production of unit mass, width, length and packaging according to customer project requirements.
✅ Self-healing Waterproof Performance: Unique bentonite expansion technology, automatic repair of material damage, permanent anti-seepage effect.
✅ Professional Technical Support: Provide free engineering design, construction guidance and after-sales service, solving all project problems for customers.
✅ Strict Quality Control: Full inspection from raw material to finished product, ensuring 100% qualified products delivered to customers.