The swelling waterproof blanket is a kind of geosynthetic material specially used to prevent leakage in artificial lakes, landfills, underground garages, roof gardens, pools, oil depots and chemical yards. It is made of high swelling sodium-based bentonite filled between special composite geotextile and non-woven fabrics. The bentonite anti-seepage mat made by needle punching method can form many small fiber spaces. Bentonite particles cannot flow in one direction. When encountering water, a uniform and high-density colloidal waterproof layer is formed in the mat.
Product Features:
High performance-price ratio and very versatile. The product range can reach 6 meters, which greatly improves the construction efficiency.
Scope of application and application conditions: Suitable for municipal administration (Landfill )、Water conservancy, environmental protection, artificial lake and building underground waterproofing and anti-seepage projects.
Construction requirements:
1、Before the construction of bentonite waterproof blanket, the base layer should be checked. The base layer should be tamped and flat, free of potholes, water, stones, roots and other sharp objects.
2、During the handling and construction of bentonite waterproof blanket, vibration and impact should be avoided as much as possible, and large curvature of the blanket body should be avoided. It is best to put it in place at one time.
3、In GCL After installation and acceptance, backfill work should be carried out as soon as possible. If it is cooperated HDPE The geomembrane should be paved and welded in a timely manner to prevent it from getting wet or broken by rain.
The waterproofing mechanism is: the sodium-based particle bentonite selected for the bentonite waterproofing blanket can expand more than 24 times when exposed to water, making it form a uniform colloidal system with high viscosity and low filtration loss. Under the restriction of two layers of geotextile, the bentonite changes from disorder to orderly expansion, and the result of continuous water absorption expansion is that the bentonite layer itself becomes dense, thus having waterproof effect.
Post time: Feb-17-2025
