Versatile Compound Geomembrane The Optimal Construction Solution
Product Introduction
Compound geomembrane is a compounded geosynthetic material
compositing of two or more materials of geotextiles (or fiber),
polymer materials (such as PE film, EVA, etc.). It is formed via
the calender, hot melt coating,which geotextiles being guide water
and polymer materials as the impervious layer. Having special
seepage control, protection and reinforcement, drainage, isolation,
and other functions, its high toughness and excellent chemical
attack resistance, anti-aging performance are greater than the
simple geotextile or simple gemomembrane. Aslo it is convenient to
construction for wider applicastions range.
Product Properties
The composite geomembrane has a certain amount of deformation, and
the stress transfer and dispersion speed of the concave and convex
defects of the base cushion are fast, and the strain capacity is
strong. The pore pressure and buoyancy on the interface between
composite geomembrane and soil are easy to dissipate. It has a
certain heat preservation effect, increased the soil frost heave on
the destruction of geomembrane and HDPE geomembrane, thus
increasing the soil deformation. In addition, the composite
geomembrane has excellent anti-aging function and engineering
maintenance and other advantages
Product Application
Product Application
* Earth-rock dams, rockfill dams, laying bricks dams, roller
compacted concrete dams.
* Channels, liquid storage pool (pits, mines)
* To be the waterproof layer of expansive soil and collapsible
loess.
* Cofferdam construction.
* Lining seepage control of subways, basements, and tunnels.
Construction
* For laying geomembrane, edge welding bead lap width 80mm-100mm,
juncture place cannot have dirt, moisture, dust, etc
* Adjust two sides of geomembrane before welding seams ,keep a
certain wedling width, and smooth without creasing.
* More details refer geomembrane construction scheme
Product Specification
Product Specification and Technical Index (GB/T 17642-2008)
| Item | Specifications | Remark |
| Geotextile Unit Weight (g/㎡) | 300 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | |
| Geomembrane Thickness (mm) | 0.25-0.35 | 0.30-0.50 | |
| Nominal Fracture Strength (KN/m) | 2.50 | 7.50 | 10 | 12 | 14 | 16 | 18 | 20 | |
| Breaking Strength (KN/m,≥,LD/TD) | 2.50 | 7.50 | 10 | 12 | 14 | 16 | 18 | 20 | |
| Standard Intensity Corresponding Elongation Rate (%) | 30~100 | |
| CBR Burst Strength (KN,≥) | 0.70 | 1.50 | 1.90 | 2.20 | 2.50 | 2.80 | 3.00 | 3.20 | |
| Longitudinal Tear Strength (KN,≥) | 0.05 | 0.25 | 0.32 | 0.40 | 0.48 | 0.56 | 0.62 | 0.70 | |
| Hydrostatic Pressve (Mpa) | See List Below | |
| Peel Strength (N/cm,≥) | 6 | |
| Vertical Permeability Coefficient (cm/s) | According to design or contract mentioned. | |
| Width Variation (%) | -1.00 | |
|
Specification
Item | Geomembrane Thickness (mm) | Remark |
| 0.20 | 0.30 | 0.40 | 0.50 | 0.60 | 0.70 | 0.80 | 1.00 |
| Hydrostatic Pressve (Mpa) | One geotextiles with one geomembrane | 0.40 | 0.50 | 0.60 | 0.80 | 1.00 | 1.20 | 1.40 | 1.60 | |
| Two geotextiles with one geomembrane | 0.50 | 0.60 | 0.80 | 1.00 | 1.20 | 1.40 | 1.60 | 1.80 | |
