Geotextile fabric is also known as landscape fabric, geofabrics, filter fabric, geo fabric, is a water-permeable geosynthetics made of synthetic fibers by needle punching or weaving. Geotextile is one of the new geosynthetics, the finished product is cloth-like and generally has a width of 4-6 meters and a length of 50-100 meters.
Geofabrics are widely used in infrastructure construction such as roads, railways, water conservancy, water transportation, airports, and environmental protection. They play a role in filtration, drainage, protection, isolation and crack prevention in engineering.
Types of Geofabrics
Geotextiles are divided into: woven geotextile, non-woven geotextile, geocomposite (composite geotextile) and wet-laid geotextile.
According to different materials, geofabrics are also divided into the following types:
- Polyester staple fiber needled nonwoven geotextile;
- Polypropylene staple fiber needled nonwoven geotextile;
- Polyester filament spunbonded needled nonwoven geofabrics;
- Polypropylene filament woven geofabrics;
- Polyester filament woven geo fabric;
- Basalt fiber woven geo fabric;
- Polypropylene split film machine woven geotextile;
- Plastic flat wire woven geotextile;
- Polyester glass fiber wet non-woven geotextile.
Specication:
| Mass per unit area(g/m2) |
100 |
150 |
200 |
250 |
300 |
350 |
400 |
450 |
500 |
600 |
800 |
| Deviation of mass per unit area, % |
-8 |
-8 |
-8 |
-8 |
-7 |
-7 |
-7 |
-7 |
-6 |
-6 |
-6 |
| Thickness, mm ≥ |
0.9 |
1.3 |
1.7 |
2.1 |
2.4 |
2.7 |
3.0 |
3.3 |
3.6 |
4.1 |
5.0 |
| Width deviation, % |
-0.5 |
| Breaking strength, kN/m≥ |
2.5 |
4.5 |
6.5 |
8.0 |
9.5 |
11.0 |
12.5 |
14.0 |
16.0 |
19.0 |
25.0 |
| Elongation at break, % |
25~100 |
| CBR breaking force, kN≥ |
0.3 |
0.6 |
0.9 |
1.2 |
1.5 |
1.8 |
2.1 |
2.4 |
2.7 |
3.2 |
4.0 |
| Equivalent aperture O90, mm |
0.07~0.2 |
| Tearing strength, kN |
0.08 |
0.12 |
0.16 |
0.20 |
0.24 |
0.28 |
0.33 |
0.38 |
0.42 |
0.46 |
0.60 |
- Excellent isolation effect: Utilize good air permeability and water permeability of geotechnical cloth, so that the flow of water through, and effectively retain the sand and soil.
- Good water guide and drainage: The geotechnical cloth has good water conductivity, it can form a drainage channel in the soil, and discharge excess liquid and gas out of the soil structure.
- Best creep resistance: By using the geotextile to enhance the soil's tensile strength and anti deformation ability, enhance the stability of the building structure, play the role of reinforcement so as to improve the quality of the soil.
- Protect soil body: Effectively make the concentrated stress diffusion, transmit or decomposition, prevent the soil from being destroyed by external forces.
- Good isolation effect: Prevent the upper and lower layers of gravel, soil and concrete mixed.
- The mesh is not easy to be blocked: Due to unshaped fibrous tissue forms mesh structure has the characteristics of flexibility and Athletic performance.
- High permeability: Under the pressure of the soil and water, it still can maintain good water permeability.
- Corrosion resistance: Polypropylene or polyester fiber as raw material, acid and alkali resistance, no corrosion, no worm damage, antioxidant.
- Convenient construction: Lightweight, easy to use, construction is simple.
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