Geosynthetics clay liner : 1. Improved leakage performance 2. Permanent waterproof performance 3. Simple construction

Geosynthetic clay liner(GCL):

We manufacture geosynthetic clay liner(GCL),have three layers for needle punchend,  up is needle punched pp non-woven geotextileinside is natural sodium bentonite and bottom is woven geotextile and thenneedle punched together, it has higher waterproof for construction, landfill, man-madelake and other projects, our product is warmly welcomed by inernationalcustomers! we have a special waterproof technique team and competitive priceand best service for you!

1. Environment friendly

 

It is raw and natural materials,;aging and corrosion seldom happen. It can keep its quality and then it does not cause any injuries and pollution for human and the environment. It is not only waterproof, but also has good ventilation performance. It can stick up for the exchange of the ecological environment. It is a pure natural, new, green waterproof material.

 

2. Permanent waterproof, excellent performance

 

Its waterproof properties are much more durable than that of the buildings. Sodium bentonite would transform to high density septum under hydro pressure. When The thickness is 3mm, the permeability is below a*10-11/sec(a=1~9), which equals to the density of 100 times of the clay with 30 mm thickness. Water retention performance is evident.

 

3. Easy to construct

 

Bentonite powder, nails and washers are enough for connection and fixation. Construction is not constrained by weather conditions and it could be taken under cold or wet conditions. Bentonite powder is spread on overlap point. When water comes, GCL would be overlapped automatically. It is so far the only material that starts the waterproof effect by water in the world. It is not necessary to take additional examination when the construction is completed. The repair works are easy in case of waterproof defects. Among the existing waterproof materials, GCLs construction period is the shortest and its operation is the easiest. It has an eminent effect on shortening the construction period as well as saving the cost.

 

 

4. Strong Self-Restore Capacity

 

The integration between waterproof material and its target enables GCL a 20~28 times swelling volume. Even if concrete structure trembles or subsides, the bentonite in GCL would restore the crack of 2mm or below on the concrete structure immediately. Even if the diameter of perforation reaches 30 mm, the restoration will be finished within 15 days completely.

 

 

Disposal of subgrades:

 

1.the subgrades must be tamped before paving the GCLs, the surface should be smooth. And it should not have the obvious hollow space.

2.the surface should be dry.

3.the minimum angle of land surface exposed to the sun should be more than 30cm.

4.the construction of GCLs should be begin until checking out the foundation

 

Preparation before paving the GCLs:

 

1.drawing the GCLs paving order

2.examining the GCLs appearance quality

3.the construction of GCLs should be processed under the weather with no rain and snow

Date Sheet ofGCL (4.2kg Bentonite)

Property	Test Method	Unit	Value
Geotextile layers:
Cover layer
Geotextile type			Polypropylene nonwoven
Mass per unit area	ASTM D 5261	g/m2	≥220
Carrier layer:
Geotextile type			Polypropylene woven
Mass per unit area	ASTM D 5261	g/m2	≥130
Bentonite layer:
Type			Natural Sodium bentonite
Mass per unit area	ASTM D 5993	g/m2	≥4200
Swell Index	ASTM D 5890	ml/2g	≥24
Fluid Loss	ASTM D 5891	ml	≤18
Water Content	DIN 18121(5hrs, 105)	%	10*
Geosynthetic Clay Liner:
Mass per unit area	ASTM D 5993	g/m2	≥4500
Thickness	ASTM D 5199	mm	6.0
Max. tensile strength	ASTM D 4595	Kn/m	14, Machine Direction 12, Cross Machine Direction
Elongation at break	ASTM D 4595	%	10.0
Max. Peel strength	ASTM D 6496	N/10cm	≥60
Peel strength	ASTM D 6496	N/m	≥360
Permeability/Hydraulic Conductivity	ASTM D 5887	M/s	≤2×10-11
Index Flux	ASTM D 5887	M3/m2.s	≤5×10-9
Puncture force	EN ISO 12236	N	2400

GCL(geosynthetic clay liner) is used to anti-seepage of man-made lake , ASTM standard