Overview
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 .