Anhui Zhonglu Engineering Materials Co., Ltd.
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Geosynthetic clay liner for heap leach pads
Product Description
Geosynthetic clay liners (GCL) 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. Fibers from the non-woven geotextile are needle punched through the layer of bentonite and incorporated into the other geotextile (either a woven or non-woven). 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.
Technical parameter
| Projects/ Technical data | Specifications | ||
| GCL-NP | GCL-OF | GCL-AH | |
| Weight per unit area(g/m2) | ≥4000g/m2 | ||
| Bentonie swell index(ml/2g) | ≥24 | ≥24 | ≥24 |
| Ethylene blue absorption(g/100g) | ≥30 | ≥30 | ≥30 |
| Tensile strength (N/100mm) | ≥600 | ≥700 | ≥600 |
| Racking strength(N/100mm) (for nonwovwn and woven fabric) |
≥40 | ≥40 | - |
| Racking strength(N/100mm) (for HDPE films and nonwoven fabric) |
≥30 | - | |
| Permeability(m/s) | ≤5.0x110^(-11) | ≤5.0x110^(-11) | |
| Anti-static water pressure |
0.4Mpa,1h, not seepage |
0.6Mpa,1h,not seepage | |
| Filtration loss (ml) | ≤18 | ≤18 | ≤18 |
| Bentonite durability (ml/2g) | ≥20 | ≥20 | ≥20 |
Application