The waterproof blanket with bentonite is waterproof to the man-made lake, but the seepage is very serious
Before proceeding to the next step, check that the bentonite waterproof layer has been lost. If there is any loss or damage, the sealant or bentonite powder should be used to repair it. 7, in order to increase the moisture content of the cushion area of the bentonite pad, the bentonite powder or bentonite sealant can be used to reinforce it.
After the construction of bentonite waterproof blanket, the construction personnel must pay attention to prevent the damage of bentonite cushion. 5, in order to prevent the early hydration due to rain, cushion construction should be laid 3-5cm thick cement mortar, in order to prevent waterproof layer contact with water and early hydration. General muddy concrete compaction total amount not less than 10cm.
The soil compaction degree of the treated soil shall be no less than eighty-five percent. 2. If the ground has moisture, it should be paved after drainage so as to prevent the early hydration of the bentonite cushion. 3. The lap joint of the bentonite waterproof blanket should be at least 15cm of the main part and the 25cm side, and be fixed at 30cm intervals with nails (also available with bamboo studs) and washers.
Bentonite waterproof blanket seepage and general construction, because the overlap is not in place or on the grass below is not dense, can not lead to expansion of bentonite in water after the cracks completely blocked and seepage because of bentonite waterproof blanket is buried in the underground water seepage and the position to see, waterproof blanket has been water. So it is very difficult for maintenance of bentonite waterproof blanket construction note 1 if ground water to drainage work.
