A natural anti-seepage material used in artificial lake construction is the sodium bentonite waterproof blanket. This product is made from sodium bentonite particles, which are known for their excellent impermeability and high expansion capacity. As a high-standard and environmentally friendly material, it serves as a natural and sustainable waterproof layer.
The sodium-based swelling waterproof blanket relies on the unique property of sodium bentonite to expand when exposed to water. When it comes into contact with moisture, the bentonite can expand up to 24 times its original volume, forming a thick colloidal system with high viscosity and low fluid loss. Confined between two layers of geotextile, the bentonite expands in an orderly manner, resulting in a dense and compact layer that effectively prevents water penetration. This process gives the sodium bentonite waterproof blanket a certain level of shear strength, making it a true natural waterproof solution.
Due to its outstanding environmental protection properties, excellent tensile strength, and strong lining performance, the sodium-based bentonite waterproof blanket is widely used in environmental engineering projects such as waste landfills, underground reservoirs, and infrastructure construction. It efficiently addresses issues related to sealing, isolation, and leakage prevention, offering reliable performance and strong resistance to damage.
The quality of the sodium bentonite waterproof blanket largely depends on the quality of the bentonite particles used. Some types of bentonite have a high expansion coefficient, reaching over 24 times when hydrated, making them ideal for use in anti-seepage applications. However, others may have a lower expansion capacity and are not suitable for this purpose. At our company, we source high-quality sodium bentonite particles from Jianping County, Liaoning Province. These particles are uniform in size, have excellent texture, and a high expansion coefficient, ensuring they meet the highest standards for producing sodium-based bentonite waterproof blankets.
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