Geosynthetic clay liner is called the sodium bentonite waterproofing blanket(pad). there are two kinds of them, GCL-NP and GCL-OF.

GCL-NP : the upper of it is the non-woven fabric, the middle is the impermeable sodium base bentomite, and the lower level is the woven fabric. it is suitable for the artificial lake(river), the trash landfill, the roof garden, the basin and other ordinary basic level to impermeably process.

GCL-OF : the top layer is the high-density polyethylene(HDPE) thin film and other are same as GCL-NP. it is suitable for the tunnel, the subway, the basement, the underground channel, and other project which has the rich ground water resources.

Weight: 4000g-5500g/sq m
Width: 5.85m
Length: 30m

 

Projects/technical data		GCL-NP	GCL-OF	GCL-AH
Unit area quality(g/)		≥4000 and not less than the regulated value
Bentonite swell index(ml/2g)		≥24	≥24	≥24
Ethylene blue absorption		≥30	≥30	≥30
Tensile strength(N/100mm)		≥600	≥700	≥600
Tensile stretch under peak load(%)		≥10	≥10	≥8
Racking strength	The non-woven and woven fabrics	≥40	≥40	------------------
	The PE films and non-woven fabrics	--------------------	≥30	-------------------
Permeability		≤5.0×10-11	≤5.0×10-11	≤1.0×10-12
Anti-static water pressure		0.4MPa,1h	0.6MPa,1h	0.6MPa,1h
Filtration loss		≤18	≤18	≤18
Bentonite durable		≥20	≥20	≥20