Product Overview

The Coated Bentonite Waterproof Blanket is a composite geosynthetic product designed for use in waterproofing and containment applications. It consists of a layer of sodium bentonite clay, which is encapsulated by a durable geomembrane coating, typically made of HDPE (High-Density Polyethylene) or PVC (Polyvinyl Chloride). This combination provides superior waterproofing performance, offering a reliable barrier against water infiltration and soil contamination. The bentonite layer expands when exposed to water, creating a self-sealing effect that ensures a tight and impermeable barrier.

This product is particularly beneficial in applications where high water retention and long-term performance are critical. The Coated Bentonite Waterproof Blanket is used in landfills, ponds, reservoirs, and other containment systems that require both waterproofing and resistance to environmental stressors such as chemicals, UV exposure, and mechanical wear.

Product Features

• Self-Sealing: The sodium bentonite layer swells and forms a seal when in contact with water, effectively preventing water leakage and enhancing the impermeability of the system.
• Waterproofing Performance: Offers excellent resistance to water infiltration, making it ideal for projects that require efficient waterproofing solutions.
• Chemical Resistance: The geomembrane coating provides protection against a wide range of chemicals, oils, and solvents, ensuring the longevity and effectiveness of the product in harsh environments.
• Durability: The combination of bentonite and geomembrane coating creates a robust, long-lasting product that can withstand mechanical stresses, punctures, and UV degradation.
• Easy Installation: Lightweight and easy to handle, this waterproof blanket can be quickly and efficiently installed in various applications.
• Environmental Protection: The Coated Bentonite Waterproof Blanket is environmentally friendly, providing a non-toxic solution for groundwater and soil protection.
• Versatile: It can be used in various applications, including landfills, ponds, reservoirs, and artificial lakes, for both temporary and permanent waterproofing solutions.

Product Specifications

• Material: The Coated Bentonite Waterproof Blanket is composed of sodium bentonite clay encapsulated in a geomembrane coating made of HDPE (High-Density Polyethylene) or PVC (Polyvinyl Chloride).
• Thickness: Typically ranges from 5 mm to 15 mm, with varying thicknesses based on application requirements and performance standards.
• Width: Available in standard widths of 2 meters to 4 meters, with custom widths available based on project needs.
• Length: Rolls are usually available in lengths of 20 meters to 100 meters, depending on the application scale and specific project requirements.
• Tensile Strength: Tensile strength typically ranges from 10 MPa to 20 MPa, offering excellent mechanical strength for installation and long-term use.
• Elongation at Break: Usually ranges from 20% to 30%, allowing for flexibility during installation without compromising the membrane’s integrity.
• Permeability: Low permeability (less than 1 x 10^-11 cm/s) ensures effective waterproofing and prevention of water seepage.
• Color: Typically black or grey for UV resistance and to limit algae growth, although custom colors may be available for specific project requirements.

Applications

• Landfills: Used as a liner in landfills to prevent leachate from contaminating the surrounding environment and groundwater.
• Ponds & Reservoirs: Provides waterproofing for artificial ponds, lakes, and reservoirs, ensuring water retention and preventing leakage.
• Artificial Lakes: Ideal for the construction of artificial lakes in parks, golf courses, and recreational areas, providing reliable water containment and long-term protection.
• Agriculture: Used in irrigation ponds and agricultural reservoirs to maintain water levels and prevent water loss due to seepage.
• Mining: Applied in mining projects for tailings ponds and leachate containment, ensuring the safe disposal of mining by-products.
• Wastewater Treatment: Used to line wastewater treatment ponds and lagoons, preventing contamination and ensuring safe containment of waste materials.
• Stormwater Management: Effective in stormwater detention basins and retention ponds, where water retention and containment are critical for managing runoff.

Construction Recommendations

1. Site Preparation: Prepare the base of the installation area by removing sharp objects, debris, and uneven surfaces. The substrate should be smooth and compacted to ensure proper adhesion and prevent damage to the membrane.

2. Installation Method: Unroll the Coated Bentonite Waterproof Blanket over the prepared surface, ensuring that it is laid out flat and free of wrinkles or folds. The product can be cut to fit the specific shape of the project site.

3. Seam Welding: If multiple sheets are required, the seams should be welded using compatible welding techniques to ensure an impermeable joint. For geomembrane seams, extrusion or heat welding is commonly used.

4. Edge Treatment: Secure the edges of the membrane by burying them in a trench or using anchors to prevent movement. The edges must be sealed to avoid water seepage along the perimeter.

5. Backfilling and Covering: After installation, cover the Coated Bentonite Waterproof Blanket with a protective layer such as sand or soil to protect it from UV damage, physical wear, and environmental factors. This covering will also help in preventing damage from external stresses such as animals or foot traffic.

6. Inspection and Maintenance: Regularly inspect the blanket for signs of damage, punctures, or wear. Repair any damage immediately using compatible patching materials or re-welding seams to maintain the integrity of the waterproofing system.