The top layer of the coated waterproof blanket is a high-density polyethylene (HDPE) film and the lower layer is a non-woven fabric. The sodium bentonite waterproof blanket with better waterproof effect is fixed between high-strength geotextiles using a special needle punching method and then placed on the non-woven fabric. A layer of high-density polyethylene (HDPE) film is adhered to it. Bentonite waterproof blanket has stronger waterproof and anti-seepage capabilities than ordinary bentonite waterproof blanket. The waterproofing mechanism is that bentonite particles expand when exposed to water, forming a uniform colloid system. Under the restriction of two layers of geotextile, the bentonite expands from disorder to order. The result of continuous water absorption and expansion is to make the bentonite layer itself dense. , thus having a waterproof effect.
Physical characteristics of coated waterproof blanket:
1. It has excellent waterproof and anti-seepage properties, the anti-seepage hydrostatic pressure can reach more than 1.0MPa, and the permeability coefficient is 5×10-9cm/s. Bentonite is a natural inorganic material that will not undergo aging reaction and has good durability; and it will not Any adverse impact on the environment is an environmentally friendly material
2. It has all the characteristics of geotextile materials, such as separation, reinforcement, protection, filtration, etc. It is easy to construct and is not restricted by the construction environment temperature. It can also be constructed below 0℃. During construction, you only need to lay the GCL waterproof blanket flat on the ground. When constructing on the facade or slope, fix it with nails and washers, and overlap it as required.
3. Easy to repair; even after the waterproofing (seepage) construction is completed, if the waterproofing layer is accidentally damaged, as long as the damaged part is simply repaired, the intact waterproofing performance can be regained.
4. The performance-price ratio is relatively high and it has a wide range of uses.
5. The product width can reach 6 meters, which matches the international geotextile (membrane) specifications, greatly improving construction efficiency.
6. It is suitable for anti-seepage and leakage treatment in areas with higher waterproofing and anti-seepage requirements, such as tunnels, subways, basements, underground passages, various underground buildings and waterscape projects with rich groundwater resources.
Post time: Nov-08-2023