Waterproof Plastic Dam 1.5mm HDPE Geomembrane Double Sided Textured
Surface
Rough geomembrane is an anti-seepage material with a rough texture
on the surface through a special process. It is mainly used to
enhance the stability of engineering structures.
Definition and classification
1. Basic composition
Using high-density polyethylene (HDPE) or linear low-density
polyethylene (LLDPE) as raw materials, it is manufactured through
processes such as blow molding and calendering, and the surface
presents a uniform granular or columnar texture.
2. Main types
- Single rough surface: only one side has a rough texture, and the
other side is smooth;
- Double rough surface: both sides have a rough texture;
- Columnar rough surface: the surface is distributed with a raised
columnar structure, divided into single/double columnar types.
Production process and standards
Manufacturing process
Use special formula resin, through film blowing or calendering
process, some products add nitrogen blowing to enhance surface
friction performance.
Implementation standards
National standard GB/T17643-2011, urban construction standard
CJ/T234-2006, some products are equivalent to American standard
GRI-GM13.
Key performance advantages
1. High friction coefficient
The rough surface design increases the friction coefficient by
30%-50%, which is suitable for steep slopes (>1:3) and vertical
anti-seepage projects to prevent slippage between geomembranes and
soil.
2. Mechanical properties
The tensile strength can reach 35MPa, the elongation at break is
≥100%, and the environmental stress cracking resistance is
excellent.
3. Chemical stability
It is resistant to acid, alkali, oil, and ultraviolet aging, with a
service life of more than 50 years, suitable for corrosive
environments such as landfills and chemical sewage pools.
1. Environmental protection projects
Landfill base/slope anti-seepage, sewage pool lining, hazardous
waste closure.
2. Water conservancy projects
Reservoir dam slope, river slope protection, tailings pond
anti-seepage, especially suitable for steep terrain.
3. Agriculture and breeding
Fish ponds, lotus ponds, biogas pools anti-seepage, to prevent soil
erosion.
Comparison with smooth geomembrane
| FEATURE | ROUGH | SMOOTH |
| Surface texture | Rough/pillar-shaped | Smooth and flat |
| Friction coefficient | High(0.4-0.6) | Low(0.2-0.3) |
| Applicable scenarios | Steep slope, vertical anti-seepage, anti-slip scenes | Scenarios requiring flat surface anti-seepage and low friction |
| Welding Difficulty | Special equipment is required (such as a large pressure welder) | Ordinary hot melt welding |
Construction precautions
1. Laying direction
Extend from high position to low position, leaving 1.5% margin to
accommodate settlement deformation.
2. Welding process
High-pressure welding equipment is required for rough surface
areas, and the weld overlap width is ≥10cm to avoid impurity
contamination.
3. Edge treatment
Some products are designed with smooth edges (width 10-30cm) to
facilitate traditional welding processes.
QUICK CONTACT
If you need to consult the price, please contact the business
department by E-mail:
cathy@geogrid-cn.com
Whatapp: 0086 139 0153 8890
