(GCL) is a new type of environmentally friendly anti-seepage material. It uses highly expansive sodium-based bentonite as the core raw material and is made into a blanket-like structure by fixing bentonite particles between two layers of geotextiles (non-woven fabric + woven fabric) through needle punching or adhesive processes.
Its core waterproof principle is ingenious: when exposed to water, bentonite expands rapidly to form a dense colloidal waterproof layer, which can even self-heal small damages, resulting in very stable anti-seepage performance.
Core Advantages
- Natural and environmentally friendly: Bentonite is a natural inorganic material, non-toxic and harmless, and will not pollute soil and groundwater.
- Strong self-healing property: It can automatically repair small damages when expanded by water, making anti-seepage more reliable.
- Simple construction: It can be directly laid on the base layer without complex equipment, and has strong adaptability to foundation deformation.
- Long service life: It is resistant to aging and corrosion, and can maintain stable anti-seepage performance for a long time.
Main Applications
- Environmental solid waste engineering: Anti-seepage liners and closure covers for landfills and hazardous waste treatment sites to prevent leachate from polluting soil and groundwater.
- Water conservancy and waterscape engineering: Anti-seepage for artificial lakes, landscape pools, reservoirs, rivers and canals, replacing traditional clay anti-seepage layers with better anti-seepage effects.
- Municipal and underground engineering: Anti-seepage for the bottom slabs/side walls of basements, underground garages, tunnels and subways to prevent groundwater penetration.
- Other scenarios: Anti-seepage for tailings ponds, underground oil storage tanks, roof gardens, sponge city rainwater collection systems, etc.
Compared with traditional waterproof membranes, bentonite waterproof blankets do not require open flame construction, which is safer and more efficient, making them suitable for large-area anti-seepage projects.
