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Home> Product > Geosynthetic Clay Liner > Geosynthetic Clay Liner
Geosynthetic Clay Liner
  • Specification 4000-6000g/sqm
  • Size 1-6m*10-30m
  • Material Sodium Bentonit
  • Model BPMGCL
  • Standard China
  • Certificate ISO, BV
Function & Application
Technical Para
Production & Package
BPM Geosynthetic Clay Liners are high performance needle punched environmental reinforced composites which combine two durable geotextile outer layers with a uniform core of natural sodium bentonite clay to form a hydraulic barrier. For different projects,it can combine HDPE liner for better waterproof.
Function : When hydrated under a confining load, the bentonite swells to form a low permeability clay layer with the equivalent hydraulic protection of several feet of compacted clay. The excellent properties of tensile and peel strength make the products ideal for many projects.
Application : Geosythetic Clay Liners are widely used in waste landfill capping and cutoff walls to contain pollution,mining base seals, canal and dam liners, lakes and other waterproofing projects.
Property ASTM Test Method Reinforced GCL Non-Reinforced GCL Testing Frequency
GT-Related GT Polymer Coated GM-GF Related GT Polymer Coated GT Polymer Coated GM-GF Related
Geotextiles (as received )                
cap fabric (nonwoven)-mass/unit area(g/m2)(2) D5261 200 200 200 100 100 n/a/100 20,000m2
cap fabric (woven)-mass/unit area(g/m2) D5261 100 100 100 100 100 100 20,000m2
carrier fabric (nonwoven composite)-mass/unit area(g/m2) D5261 240 240 240 100 100 n/a/100 20,000m2
carrier fabric (woven)-mass/unit area(g/m2) D5261 100 100 100    20,000m2
coating-mass/unit area(g/m2)(3) D5261 n/a 100 n/a n/a 100 n/a 4,000m2
Geomembrane/Geofilm ( as received )                
thickness(4) (mm) D5199/D5994 n/a n/a 0.40/0.50/0.10 n/a n/a 0.40/0.75/0.10 20,000m2
density (g/cc) D1505/D792 n/a n/a 0.92 n/a n/a 0.92 20,000m2
break tensile strength,MD&XMD(kN/m) D6693 n/a n/a n/a n/a n/a 6.0 20,000m2
break tensile strength ,MD(kN/m) D882 n/a n/a 2.5 n/a n/a 2.5 20,000m2
GCL (as manufactured)                
mass of GCL (g/m2)(5) D5993 4000 4050 4100 4000 4050 4100 4,000m2
mass of bentonite (g/m2)(5) D5993 3700 3700 3700 3700 3700 3700 4,000m2
moisture content(1)(%) D5993 35 35 35 35 35 35 4,000m2
tensile str.,MD (kN/m) D6768 4.0 4.0 4.0 4.0 4.0 4.0 20,000m2
peel strength (N/m) D6496 360 360 360 n/a n/a n/a 4,000m2
permeability (1)(m/sec),"or" D5887 5×10-11 n/a n/a 5×10-11 n/a n/a 25,000m2
flux(1)(m3/sec-m2) D5887 1×10-8 n/a n/a 1×10-8 n/a n/a 25,000m2
GCL permeability (1),(6)(m/sec)(max.at 35kPa) D6766 1×10-8 n/a n/a 1×10-8 n/a n/a yearly
GCL permeability (1),(6)(m/sec)(max.at 500kPa) D6766mod 5×10-10 n/a n/a 5×10-10 n/a n/a yearly
Component Durability                
geotextile and reinforcing yarns(7)(%strength retained) See §5.6.2 65 65 n/a 65 65 n/a yearly
geomembrane See §5.6.3 n/a n/a GM Spec(8) n/a n/a GM Spec(8) yearly
geofilm/polymer treated(7)(%strength retained) See §5.6.4 n/a 85 85 n/a 85 80 yearly
Production: With bentonite particles and corresponding admixture mixed as raw material, through the acupuncture technology and equipment, fixed bentonite particles between geotextile and plastic woven cloth and blanket made of waterproofing materials.
Packing: PE film inside ,woven geotextile outside with double strength belt .