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Bentonite has the property of swelling in contact with water

Bentonite waterproof blanket is a kind of geosynthetic material, specially used in artificial lake landscape, landfill, underground garage, roof garden, swimming pool, oil depot and chemical plant. It is made of wholesale bentonite geosynthetic clay liner with high swelling properties and filled between special composite geotextile and non-woven fabric. The bentonite impermeable pad made by needle punching can form many small fiber spaces. The bentonite particles cannot flow in one direction, and form a uniform high-density gel-like waterproof layer on the cushion, effectively preventing water leakage. According to its chemical composition, the mineralogical name of bentonite is montmorillonite. Natural bentonite is mainly divided into sodium and calcium.

Bentonite has the property of swelling in contact with water

Bentonite has the property of swelling in contact with water. When high quality GCL geosynthetic clay liner calcium swells, its swelling amount is only about 3 times its own volume, while sodium-based bentonite absorbs 5 times its own weight when exposed to water, and its volume swells 15-17 times. Bentonite is locked between the two layers of geosynthetics to protect and strengthen GCL, which has a certain overall shear strength. Sodium bentonite forms a high-density membrane under water pressure. When the thickness is about 3 mm, its water permeability is less than 10×11 m/s, which is equivalent to 100 times the compactness of 30 cm thick clay. It has a strong self-power. Because sodium bentonite is a natural inorganic material, it will not age or corrode even after a long time or changes in the surrounding environment, so its waterproof performance is durable.

Bentonite is a kind of natural inorganic material, which is harmless to human body and has no special impact on the environment. It has good environmental performance. However, the material of GCL geosynthetic clay liner manufacturers waterproof blanket is heavier and should be transported and laid with a shovel and waterproof blanket spreader.

When installing the bentonite waterproof blanket, the outdoor temperature shall not be lower than 0℃ or higher than 40℃. # 5. All exposed edges of the bentonite waterproof blanket must be immediately squeezed with sandbags or other heavy objects to prevent the bentonite waterproof blanket from being blown away by the wind or being pulled out of the surrounding fixed ditch. The bentonite waterproof blanket cannot be used in windy weather to prevent it from being blown away.

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