The introduction and application of pp non-woven geotextile:
Application:
1) Inverted filter: can do dam, the river canal, coast, concrete slope and retaining walls of inverted filter layer, such as in preventing soil particles through at the same time, allowing water or gas free to go through.
2) Isolation: can do railway roadbed, slag and ways of roadbed and soft foundation, airport and parking, different surface and foundation of the isolation, between dams material of two kinds of different size and foundation soil sand, stone away or other structures.
3) Reinforcement effect : used for highway, railway, the earth-rock dam, airports, prevent slope, backfill soil retaining wall, slope projects, distribution, prevent soil mass stress move, improve soil soil lateral stability.
4) Protective effect: for the banks, can prevent the wave of scour, and used for rain, protect bottom, revetment to prevent soil erosion.
5) Composite effect : used in compound in drainage board, drainage nets and geomembrane etc material.
The spec and property indexes of pp non-woven geotextile:
100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 800 | Notes | |
Mass per unit deviation (%) | -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 | |
Breadth 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 | |
breaking elongation rate (%) | 25-100 | Vertical and horizontal | ||||||||||
CBR bursting strength (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(O95) mm | 0.07-0.20 | |||||||||||
Vertical permeability coefficient (cm/s) | K×(10-1 -10-3) | K= 1.0-9.9 | ||||||||||
(KN≥) | 0.08 | 0.12 | 0.16 | 0.20 | 0.24 | 0.28 | 0.33 | 0.38 | 0.42 | 0.46 | 0.60 | Vertical and horizontal |
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