Suitable for municipal (garbage landfill), water conservancy, environmental protection, artificial lake and building underground waterproof and anti-seepage projects. Can be used at negative temperatures (-20 ° C) where traditional waterproofing materials cannot be used;
Sources of the above data: Hangzhou Zhiding Technology can also be used on wet bases (but no clear water); it cannot be used in rain and snow; it is not suitable for anti-seepage of strong acid and strong alkaline solutions; its durability is due to bentonite-based inorganic materials Better than organic waterproof materials.
The bentonite particles swell with water to form a uniform colloid system. Under the limitation of two layers of geotextile, the bentonite changes from disordered to ordered expansion. The continuous water absorption expansion results in the bentonite layer itself becoming dense, thus having Waterproof effect.
The mineral name of bentonite is montmorillonite. Natural bentonite is mainly divided into sodium and calcium based on chemical composition. Bentonite has the characteristics of swelling with water. When calcium-based bentonite swells, its expansion is only about three times its own volume, while sodium-based bentonite absorbs five times its own weight of water when it encounters water, and swells to 15-17 times the original. Sodium-based bentonite is locked in the middle of two layers of geosynthetics, which protects and strengthens the GCL, so that it has a certain overall shear strength.