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Non-woven Geotextile | |||||||||
Specification | g/m2 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 |
Mass deviation per unit area | % | -5 | |||||||
Thickness | mm | 0.8 | 1.2 | 1.6 | 1.9 | 2.2 | 2.5 | 2.8 | 3.1 |
Amplitude deviation | % | -0.5 | |||||||
Breaking strength | KN/m≥ | 4.5 | 7.5 | 10.0 | 12.5 | 15.0 | 17.5 | 20.5 | 22.5 |
Elongation at break | % | 40-80 | |||||||
CBR bursting strength | KN≥ | 0.8 | 1.6 | 1.9 | 2.2 | 2.9 | 3.4 | 3.9 | 4.7 |
Equivalent aperture | mm | 0.05-0.20 | |||||||
Vertical penetration system | cm/s | Kx(10-3-10-2) K=1.0-9.9 | |||||||
PP Geotextile Tear strength | KN≥ | 0.14 | 0.21 | 0.28 | 0.35 | 0.42 | 0.49 | 0.56 | 0.63 |
The key to the superior drainage capability of needle punched nonwoven geotextile is its high void space. This is the space between the fibers in the fabric, which allows for efficient flow of water and air. Because the fabric is made up of millions of small fibers, the void space is maximized, allowing for rapid drainage even in the presence of heavy rainfall or flooding.
Another important factor contributing to the good drainage capability of needle punched nonwoven geotextile is its resistance to clogging. Unlike other materials used in construction, such as gravel or sand, needle punched nonwoven geotextile does not become clogged and obstructed over time. This means that it can continue to effectively drain water even in the long term, reducing the risk of costly and disruptive maintenance or replacement.