Geosynthetic Clay Liner

By admin on Mar 27 in Geosynthetic Clay Liner.

Geosynthetic Clay Liner (GLCs) is the high performance needle punched environmental reinforced composites which combines two durable geotextile outer layers with a uniform core of natural sodium bentonite clay to form a hydraulic barrier.  Geosynthetic clay liner is often mechanically held together by needling, stitching or chemical adhesives.

 Geosynthetic clay liners are widely used as a replacement for compacted clay liners. Upon hydration, the bentonite in the GCL can swell automatically to form a low permeability clay layer with the equivalent hydraulic protection of several feet of compacted clay when hydrated under confining load.  The geosynthetic clay liner can provide approximately the same hydraulic protection as compacted clay can. The excellent tensile and peel strength properties make the geosynthetic clay liner ideal for composite liner systems, landfill composite base liners and backfilled seepage control liners, etc.

Description

Geosynthetic Clay Liner (GLCs) is the high performance needle punched environmental reinforced composites which combines two durable geotextile outer layers with a uniform core of natural sodium bentonite clay to form a hydraulic barrier.  Geosynthetic clay liner is often mechanically held together by needling, stitching or chemical adhesives.

 Geosynthetic clay liners are widely used as a replacement for compacted clay liners. Upon hydration, the bentonite in the GCL can swell automatically to form a low permeability clay layer with the equivalent hydraulic protection of several feet of compacted clay when hydrated under confining load.  The geosynthetic clay liner can provide approximately the same hydraulic protection as compacted clay can. The excellent tensile and peel strength properties make the geosynthetic clay liner ideal for composite liner systems, landfill composite base liners and backfilled seepage control liners, etc.

Geosynthetic Clay Liner Specifications

Properties Unit Test Method Frequency Value
GCL Property
Bentonite mass per unit area g/m2 ASTM D 5993 4000m2 3600g/m2  MARV 
Tensile Strength kN/m ASTM D 6768 4000m2 6kN/m MARV 
Peel Strength  N ASTM D 4632 4000m2 65N MARV
Hydraulic conductivity  cm/s ASTM D 5887 periodically 5×102cm/sec MARV 
Shear Strength kPa  ASTM D 6243 periodically  24 kPa Typical
  Geotextitle Property
Cap nonwoven geotextile  g/m2 ASTM D 5261 20,000m2 200 g/m2 MARV
Cap woven geotextile g/m2 ASTM D 5261 20,000m2  200 g/m2 MARV
Bentonite property
 Swell index  Kg  ASTM D 5890 50,000Kg 24ml/2g  MARV
Moisture content %  ASTM D 4643 50,000Kg 12% max
Fluid loss ml ASTM D 5891 50,000Kg 18ml max
 Roll Dimensions
 Width*Length m  Typical each roll 5.8×30
 Area Per Roll  m2 Typical each roll  174
Packaged Weight kg Typical each roll  935
 20GP loading roll Typical each roll  20
20GP loading Note:
1. variation allowed 2% .
2. GCL Unit weight can be 5000g/m2,5500g/m2 6000g/m2.
3. Nonwoven Geotextile can be PP or PET material.

Geosynthetic Clay Liner Features

  • Better hydraulic performance
  • Compacted clay liner replacement
  • Wider temperature spectrum
  • Consistent quality
  • Granular bentonite providing consistent hydraulic performance
  • Durable Needle punched reinforcement and shear strength
  • Reduced carbon footprint
  • Simple overlap seams

Geosynthetic Clay Liner Applications

Geopro brand geosynthetic clay liner is widely used in waste landfill capping and cutoff walls to contain pollution, mining base seals, canal and dam liners, lakes and other waterproofing projects.

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