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Bentonite waterproof blanket
Shandong yongrun bentonite waterproof cushion (GCL) is a kind of special used in artificial lake water, landfill, underground garage, a roof top garden, and pools, and chemicals such as yard oil leakage of geosynthetic materials, GCL is made from high expansion of sodium bentonite filling in a special composite nonwoven fabric and nonwoven cloth, the upper between the nonwovens fiber through the special knitting legislation will bentonite locked in the compound machine fabric made of fabric shape and phlegm. The legal system with acupuncture into bentonite seepage control pad can form many small fiber space, make the bentonite particles can't in one direction, the water in the pad when formed in high density of uniform adhesive, water head effectively prevent the water leakage.
GCL is a cross between a CCL (site thick compaction of seepage prevention of clay liner) and polymer materials geomembrane between seepage control pad. Mainly used in environmental engineering of waste landfill, underground reservoir, underground infrastructure project, solve the seal, isolation, leakage problem, the effect is good, fight destructive.
1, density of sodium bentonite:
in water pressure formed under the condition of high density diaphragm, thickness of about 3 mm, it's water permeability aX10-11 m/for the SEC, equivalent to 100 times as much as the thickness of the compactness of clay 30 cm, with strong performance since the water
2, have permanent waterproof performance: because sodium bentonite is natural inorganic material, even after a long time or the surrounding environment changes, also won't happen aging or corrosion phenomenon, so waterproof properties is lasting Three, the construction is simple, short construction period: and other waterproof material is relatively simple, construction, do not need to heating and paste, just a bentonite powder and nail, washer and so on were connected and fixed, after construction do not need special inspection, if found defects and easy to maintenance. Waterproof GCL is the existing waterproof material construction period in the shortest.
4, not affected by temperature influence: in cold climates conditions also won't brittle 5, waterproof materials and object integration: sodium bentonite and water response, has 13-16 times the expansion ability, even if the concrete structure in vibration and settlement, within the GCL bentonite also can repair within 2 mm the concrete surface crack 6 and green environmental protection: bentonite for natural inorganic material, harmless to the environment, no special non-toxic influence, has the good environmental protection performance.
1, the connection between the GCL, and the connection between the GCL structure is very simple, and joint sealing also easy to guaranteed.
1.1, simple lap a strip method: in length and width direction GCL lap 25 cm (which the main body part 10 cm, edge part 15 cm), should guarantee the juncture, no noise without drape soil and other materials. In 25 cm from edge points, with artificial or machine shop 10 cm wide, high 1 cm of strip bentonite powder lap in two layers among GCL.
1.2, secret by a joint paste law: general in the seams of compares level with "strip method" directly laid seal, in slope and special point with bentonite cream. (bentonite cream can add in bentonite powder (weight), and continuously even than
1:3 and mixing, until a smooth soft paste).
2, and pipe and structures GCL connection
1. Application "strip method" or "paste method", and carefully sealed structure to connect, the horizontal plane should be careful construction, end GCL guarantee seal.
2. Facade and slope surface laid bentonite pad (GCL), to avoid the sliding, usable pin and to secure its, in addition to cushion in bentonite mat overlap and edge site with the use of steel nail fixed outside, the whole picture of bentonite mat depends on add to nail, flatness bentonite mat solid apply during make-up installed in metope and ground and, when necessary, use bentonite cream touched plasma joint is in wall body. Hole part as a way to deal with.
As need Product principle:
The name of bentonite mineralogy montmorillonite, natural bentonite according to chemical composition and calcium and sodium are divided into two categories. Bentonite has the characteristics of expansion in water, general calcium base bentonite expands, it has expanded their size is only about three times; And sodium bentonite expands, about their size 15 times or so, can absorb 6 times its own weight of water, this expansion of bentonite by the formation of the high density colloid has repels water performance. Use of this performance, people use sodium bentonite to do waterproof materials. For the convenience of construction and transportation, will be locked in the two layers of bentonite geosynthetic materials, and strengthening the protection among the effect, make the whole GCL has certain shear strength.
The actual usage width 5 m (effective width 5.3 m)
Unit area: 5000 g/m2 quality
Bentonite quality: 4500 g/m2
The permeability coefficient of 5 x 10-more than 11 m/SEC
Expansion coefficient acuity 24 ml / 2 g
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