Product Overview

The GCL Sodium Bentonite Geosynthetic Clay Liner (GCL) is a high-performance composite material made from sodium bentonite clay sandwiched between two layers of geotextiles. This combination offers superior impermeability and strength, making it an ideal solution for preventing the migration of liquids in applications such as landfills, ponds, and wastewater treatment systems. The sodium bentonite clay naturally swells when hydrated, creating a self-healing, impermeable barrier that ensures the long-term protection of surrounding environments from leachate and other contaminants.

Product Features

• Exceptional Leak Protection: The sodium bentonite clay swells and forms a dense, impermeable barrier when hydrated, preventing water or leachate from passing through.
• Self-Healing Properties: Minor punctures and damage are automatically sealed by the swelling of the bentonite, ensuring the liner's integrity is maintained over time.
• High Durability: Reinforced with nonwoven geotextiles, the GCL offers high tensile strength, tear resistance, and durability under mechanical stress, even in harsh environmental conditions.
• Chemical Resistance: The GCL is resistant to a variety of chemicals, making it suitable for landfill, hazardous waste containment, and industrial applications where chemical resistance is essential.
• UV and Environmental Protection: The liner is designed to withstand prolonged exposure to UV rays, ensuring long-term performance in outdoor environments.
• Eco-Friendly: Made from natural, non-toxic materials, the GCL provides an environmentally sustainable solution for a variety of containment applications.

Product Specifications

• Material Composition: A layer of sodium bentonite clay encapsulated between two layers of nonwoven geotextiles for strength, water resistance, and mechanical reinforcement.
• Thickness: Typically, the bentonite layer is between 5mm and 10mm, with the overall thickness of the GCL ranging from 8mm to 15mm, depending on the project requirements.
• Width: Available in rolls up to 6 meters wide, ideal for large-scale installations such as landfills, ponds, and reservoirs.
• Permeability: The GCL has a permeability coefficient of 10^-9 cm/s or lower, making it highly effective at preventing water or leachate migration.
• Tensile Strength: Typically ranges from 8-15 MPa, depending on the reinforcement of the geotextiles and application requirements.
• Weight: The GCL weighs between 4-5 kg/m², which makes it lightweight and easy to handle during transportation and installation.

Applications

• Landfills: Used in municipal and industrial landfills to line the base and sides, preventing the leakage of leachate into surrounding soil and groundwater.
• Ponds and Reservoirs: Ideal for lining artificial ponds, lakes, and reservoirs, ensuring water retention and preventing leakage.
• Hazardous Waste Containment: Suitable for the containment of hazardous and toxic materials in waste disposal sites, providing an effective barrier against contaminant migration.
• Mining Waste: Used in mining operations, such as tailings ponds and heap leach pads, to control water seepage and prevent contamination of surrounding ecosystems.
• Wastewater Treatment: Lining treatment ponds, lagoons, and basins, preventing the seepage of wastewater and protecting the surrounding environment.
• Soil and Groundwater Protection: Ideal for projects requiring protection of soil and groundwater from contamination, such as environmental remediation sites.

Construction Recommendations

1. Site Preparation: Ensure the installation area is smooth, level, and free from sharp objects or debris that could puncture the liner. The subgrade should be compacted to provide stable support for the GCL.

2. Installation Method: Unroll the GCL Sodium Bentonite Geosynthetic Clay Liner in a uniform, wrinkle-free manner. Ensure adjacent sections overlap by 15-30 cm and properly align the seams to ensure a continuous, impermeable barrier.

3. Seam Sealing: Properly stitch or bond seams using appropriate techniques to ensure that the liner remains watertight. Overlapping seams ensures that there are no gaps where leakage can occur.

4. Protection During Installation: Avoid walking on the liner with shoes that may damage it, and use non-abrasive equipment when handling the material. Take care not to expose the liner to prolonged UV exposure before it is covered.

5. Backfilling: After installation, cover the liner with a protective layer of soil or gravel to shield it from UV rays, physical damage, and environmental elements. This also helps to secure the liner and prevent movement during operation.

6. Quality Control: Regularly inspect the liner for signs of damage or defects during installation. Perform tests, such as permeability and seam integrity checks, to ensure the GCL meets the required specifications and performs as intended.