Self-Healing Sodium Bentonite Waterproof Blanket with 4-6m Width and ≥24ml/2g Swelling Index

Our sodium bentonite waterproof blanket (Geosynthetic Clay Liner, GCL) is a high-performance natural inorganic anti-seepage composite material. Professionally manufactured by encapsulating high-purity sodium bentonite particles between reinforced geotextiles using a special needle-punching process, this product features unique water-swelling and self-repairing functions that deliver permanent and stable anti-seepage effects without chemical adhesives.

This eco-friendly, cost-effective solution offers long-service seepage control and is widely recognized in global civil and environmental engineering projects.

• Superior Self-Healing & Ultra-Low Permeability: High-quality sodium bentonite expands 15-20 times in volume when encountering water, automatically filling punctures, construction gaps, and foundation cracks to form a dense colloidal waterproof layer.
• Permanent Durability & Environmental Adaptability: As a pure natural inorganic mineral material, it resists aging, corrosion, and degradation, maintaining stable performance in extreme weather with a service life exceeding 50 years.
• Simple Construction & Cost Efficiency: Lightweight and flexible design adapts to various surface shapes without heating, glue spraying, or complex processes, reducing construction time and maintenance costs.
• Green & Eco-Friendly: Non-toxic, harmless raw materials conform to international environmental standards, preventing secondary pollution to soil and groundwater.