The safety and service life of the railway, highway and other transportation infrastructure projects are closely related to their own drainage system, in which geosynthetic materials are an important part of the drainage system. Three-dimensional composite drainage network is a new type of geosynthetic material, three-dimensional composite drainage network is a new type of geosynthetic material, three-dimensional composite drainage network is a new type of geosynthetic material. Three-dimensional composite geodrainage network consists of three-dimensional structure of plastic mesh double-sided bonded permeable geotextile, can replace the traditional sand and gravel layer, mainly used for landfill, roadbed and tunnel inner wall drainage.
Tri-dimension composite geonet for drainage is made of a unique tri-dimension geonet coated with geotextile on both sides. It has the property of geotextile(filtration) and geonet (drainage and protection) and provide a function system of “filtration-drainage-protection”. The tri-dimension structure can bear higher load in construction and remain certain thickness, strength and excellent in water conductivity.
■ Primary Applications
- Landfill drainage
- Highway subgrade and pavement drainage
- Railway soft ground drainage reinforcement
- Railway subgrade drainage, railway ballast and ballast drainage, tunnel drainage
- Underground structure drainage
- Retaining wall back drainage
- Gardens and playgrounds drain
| Item |
Unit |
Value |
| Unit weight |
g/㎡ |
750 |
1000 |
1300 |
1600 |
| Thickness |
㎜ |
5.0 |
6.0 |
7.0 |
7.6 |
| Hydraulic conductivity |
m/s |
K×10-4 |
K×10-4 |
K×10-3 |
K×10-3 |
| Elongation |
% |
﹤50 |
| Net tensile strength |
kN/m |
8 |
10 |
12 |
14 |
| Gotextile unit weight |
PET needle punched geotextile |
g/㎡ |
200-200 |
200-200 |
200-200 |
200-200 |
| Filament non woven geotextile |
| PP high strength geotextile |
| Peel strength between geotextile and geonet |
kN/m |
3 |
Frequently Asked Questions
What is a three-dimensional composite drainage network?
It is a new type of geosynthetic material composed of a three-dimensional plastic mesh structure with double-sided bonded permeable geotextile. It replaces traditional sand and gravel layers for infrastructure drainage.
What functions does the tri-dimension composite geonet provide?
It offers a comprehensive "filtration-drainage-protection" function system, combining the filtration properties of geotextiles and the drainage and protective capabilities of the inner geonet.
How does the structure perform under heavy construction loads?
The unique three-dimensional layout is designed to bear high structural loads during construction while maintaining its thickness, strength, and excellent water conductivity.
What are the main engineering applications for this material?
It is widely used in landfill drainage, highway subgrade/pavement systems, railway soft ground reinforcement, tunnel wall drainage, underground structures, retaining walls, and playgrounds.
What is the standard peel strength between the geotextile and geonet?
According to the technical specifications, the peel strength between the geotextile and the inner geonet structure is 3 kN/m, ensuring robust lamination under structural pressure.
What are the available thickness options for these drainage networks?
The composite geonets are available in varying thicknesses, typically ranging from 5.0 mm to 7.6 mm, matching different structural requirements and load-bearing demands.
Hongyue
