The action of adding sodium bentonite into cement
Bentonite can be used as waterproof materials, waterproof felt waterproof board, corrugated board with bentonite sandwiched between two layers of non-woven bentonite and a layer of non-woven fabric with a layer of plastic plate sandwiched with bentonite double waterproof plate, the material has been widely used in the subway, the bottom of the dam, the landfill in underground engineering in. Bentonite has high water tightness and self repair recovery function, its waterproof is dense (sodium bentonite in water under the condition of the formation of the diaphragm, the compactness of 30cm thickness of clay thickness about 5mm, equivalent to 100 times the), good performance of water preservation (sodium bentonite and water reaction when has the expansion force, L3l6 times so it can repair the surface of the concrete crack is less than 2mm) and permanent waterproof properties (sodium bentonite does not occur the phenomenon of aging or corrosion) and other characteristics. Bentonite is harmless to human body and has excellent environmental protection performance. Easy construction. Do not need heating and pasting, not affected by temperature. At the same time, the construction period is short, and compared with other waterproof materials, construction is relatively soft and simple. Just nails and washers. No special inspection is required after construction, and it is easy to repair if water proof defects are found.
With the impervious layer of bentonite paved the river, the water can be limited to the distance. Bentonite waterproof layer can be used natural sodium bentonite powder is spread directly, can also use bentonite with local soil compaction, can also be bentonite sandwiched between two layers of fabric waterproof blanket (3) (board), quickly built a reservoir, water reservoir and canal kiln.
The lubrication of bentonite, sealing adhesion, thickening and gelling made of mud, used for lining various operations such as soil seepage, wall construction, grouting, pile, caisson, anti-seepage cement and concrete construction land, additive, solid water transport, sewage treatment and shield lubrication etc..
