GCLs ( Bentonite Clay Liners)

GCLs ( ref JGCL and JSGCL) and composite GCLs with HDPE liners laminated onto the GCLs (our ref no. JHM-JCL & JHM-SGCL)

Bentonite Geosynthetic clay liners (GCL) consist of  bentonite, woven between two geotextile layers. This lining mechanism uses the properties of bentonite and the material to which it is bonded holds the clay in place.GCLs require soil cover of at least 300mm to provide sufficient normal force to confine the expansion of the bentonite core layer. The bentonite swells and extrudes through the geotextile fabric at the overlap, forming a seal by producing a dense and uniform clay barrier with the same hydraulic qualities in all parts of the clay liner.

We have GCLs ( ref JGCL and JSGCL) and composite GCLs with HDPE liners laminated onto the GCLs (our ref no. JHM-JCL & JHM-SGCL)

MODEL	JGCL	JSGCL	JHM-GCL	JHM-SGCL
WIDTH	5.8M	2.9M	5.8M	2.9M
LENGTH PER ROLL	30M	5M	30M	5M
MASS WEIGHT OF BENTONITE	3.6KG/SQM- 4.8KG/SQM	3.6KG/SQM-4.8KG/SQM	3.6KG/SQM-4.8KG/SQM	3.6KG/SQM-4.8KG/SQM
THICKNESS OF HDPE LINER	N/A	N/A	0.1MM-0.3MM	0.1MM-0.3MM
CAPACITY OF 20CTR	3480SQM-4524SQM	3480SQM-4524SQM	3132SQM-4176SQM\	3132SQM-4176SQM

 

Technical Data

Items Testing Method Required values Bentonite Swell Coefficient ASTMD5890 ≥ 24mL/2g Fluid Loss ASTMD5891 ≤ 18mL Bentonite Weight per unit ASTMD5993 ≥4.8kg/m2 Tensile Strength ASTMD4632 ≥400N Peeling Strength ASTMD4632 ≥65N Indicating Flowmeter ASTMD5887 ≤1 × 10-8m3/m2/sec Permeability Coefficient ASTMD5887 ≤5 × 10-9cm/sec Tensile Strength after soaking ASTMD5321 ≥24kPa typical

GCLs ( Bentonite Clay Liners)