The introduction and performance of bentonite compound waterproof cushion(GCL):
1.GCL is a new type of geosynthetic materials.
2.GCL widely used in municipal, roads, railways, water conservancy, environmental protection, and industrial and civil building construction of underground waterproofing seepage control.
3.Application:
1)Used in Lord of the landfill geomembrane lining layer
2)Used in The Times of landfill geomembrane lining layer
3)Used in a landfill geomembrane under the clay and layers
4)Used for covering layer of landfill geomembrane next
5)With a wall of water of ramus osteotomy geomembrane adjacent
6) GCL on geomembrane , used to prevent aggregates will geomembrane punctured
7)Used for underground storage Wells second lining layer
The spec and property indexes of GCL:
Test Method | Technique Data | |
Expansion coefficient | ASTM D 5890 | 24 mL/2g min |
Mass per unit bentonite | ASTM D 5993 | 3.6kg/m2 min |
Tensile strength | ASTM D 4632 | 400 N marv |
Peel strength | ASTM D 4632 | 65 N min |
GCL index flux | ASTM D 5887 | 1×10-8 m3/m2/sec max |
Permeability | ASTM D 5887 | 5×10-9 cm/sec max |
GCL hydrated internal shear strength | ASTM D 5321 | 24kPa typical |
Bentonite swell index | ASTM D 5891 | 18mL max |
