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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.
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:
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 |