sodium bentonite soil sealant

Principle of Sealing With Bentonite

The key to designing Bentonite liners and vertical cut-off barriers lies in understanding clay chemistry. Bentonite is a clay mineral made of hydrous aluminosilicate sheets or plates. Unsatisfied charges within its crystal structure resulting from the substitution of aluminium by magnesium atoms cause a net negative surface charge. To counteract this charge imbalance, bentonite has…