Summary of the principle of use of bentonite waterproof blanket and points for attention
RELEASE TIME :
2022-03-07 17:35
As we all know, bentonite waterproof blankets are widely used in artificial lake landscapes, artificial ponds, underground gardens, underground garages and other places. Bentonite waterproof blanket has good waterproof effect. Why is the bentonite waterproof blanket waterproof? So, what is its use principle? Next, the editor will take you to learn more about it!
After bentonite particles swell with water, they form a uniform colloidal system. Under the interaction of 20% geotextile, the bentonite changed from disordered expansion to ordered expansion. The bentonite layer with continuous water absorption has a good waterproof effect. Bentonite waterproof blanket has a certain sugar resistance, which can meet the conditions for us to use geotextiles in the process of use.
As a new type of geosynthetic material, bentonite waterproof blanket can be used in what ways? What is the use?
Bentonite waterproof blanket is mainly used for underground waterproof and anti-seepage projects in municipal engineering, road construction, water conservancy projects, environmental protection undertakings and industrial migrant workers' buildings. So what should be paid attention to during the construction process? Xiaobian will give you a brief introduction.
1. The material of the bentonite waterproof blanket is relatively heavy, and it is necessary to use a bucket to carry and lay the lifting equipment for the waterproof blanket.
2. The bentonite waterproof blanket should be connected and lapped;
3. When the waterproof blanket is laid on a slope of more than 10%, the number of connections of the waterproof blanket should be minimized along the slope, and the depth of bentonite on the slope should exceed 150cm from the footline of the slope.
4. It should be noted that the paved bentonite waterproof blanket prohibits mechanical equipment from running on it, and the peripheral temperature of the bentonite waterproof blanket must not exceed 40 degrees or lower than 0 degrees.
5. Tighten the edges of the bentonite waterproof blanket exposed with sandbags or other heavy objects to avoid strong winds. The bentonite tarpaulin flew off or was unloading surrounding anchors.
6. Make sure that the bentonite waterproof blanket is in direct contact with the underground foundation without wrinkles. Wrinkling, folding or swelling can affect the material around the soil layer, in order to avoid this, lay, cut and repair the earthwork material according to the drawings and technical instructions to avoid or solve this problem.
The waterproof blanket has a particularly strong expansion and crack repair function, and is an ideal anti-leakage material for the first underground layer. The bentonite waterproof blanket is made of waterproof sodium bentonite and high-strength geotextiles by knitting. Where free expansion is restricted, sodium-based bentonite can form a water-swellable impermeable layer, and after installation, the bentonite can repair itself even if pointed substances penetrate. In addition, the concrete cracks caused by uneven settlement and shrinkage cracks in expansive soil can be filled by themselves. Mainly suitable for basement floors, structural walls, drop-offs, subway stations, underground continuous wells, maintenance piles, etc.
The above is a summary of the principle of use of the waterproof blanket and the points for attention. If you have any unclear points, you can leave a message!
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