Needle Punched Geotextile
High tensile strength: It can withstand a large amount of tension, is not easy to break, and can adapt to different construction environments.
Good water permeability: Allows water to pass through while preventing the loss of soil particles and maintaining structural stability.
Corrosion resistance: Resistant to the erosion of chemical substances such as acids and alkalis, with a long service life.
Convenient construction: Lightweight, easy to cut, can be laid quickly, improving project efficiency.
Isolation and Protection: Separate different materials to prevent mixing and protect the underlying structure.
Product Introduction:
Needle Punched Geotextile is a kind of water - permeable geosynthetic material made from synthetic fibers (such as polyester, polypropylene, etc.) through processes like needle - punching, weaving, or hot - melting. It is widely used in engineering construction.Geotextiles solve problems such as soil deformation, seepage, and erosion in engineering through five core functions of separation, filtration, drainage, anti - seepage, and reinforcement, and are indispensable materials in modern infrastructure construction.
Product Parameters:
project | metric | ||||||||||
| Nominal strength/(kN/m) | |||||||||||
| 6 | 9 | 12 | 18 | 24 | 30 | 36 | 48 | 54 | |||
| 1 | Longitudinal and transverse tensile strength / (kN/m) ≥ | 6 | 9 | 12 | 18 | 24 | 30 | 36 | 48 | 54 | |
| 2 | Maximum elongation at maximum load in longitudinal and transverse directions/% | 30~80 | |||||||||
| 3 | CBR top penetration strength /kN ≥ | 0.9 | 1.6 | 1.9 | 2.9 | 3.9 | 5.3 | 6.4 | 7.9 | 8.5 | |
| 4 | Longitudinal and transverse tearing strength /kN | 0.15 | 0.22 | 0.29 | 0.43 | 0.57 | 0.71 | 0.83 | 1.1 | 1.25 | |
| 5 | Equivalent aperture O.90(O95)/mm | 0.05~0.30 | |||||||||
| 6 | Vertical permeability coefficient/(cm/s) | K× (10-¹~10-), where K=1.0~9.9 | |||||||||
| 7 | Width deviation rate /% ≥ | -0.5 | |||||||||
| 8 | Unit area mass deviation rate /% ≥ | -5 | |||||||||
| 9 | Thickness deviation rate /% ≥ | -10 | |||||||||
| 10 | Thickness coefficient of variation (CV)/% ≤ | 10 | |||||||||
| 11 | Dynamic perforation | Puncture hole diameter/mm ≤ | 37 | 33 | 27 | 20 | 17 | 14 | 11 | 9 | 7 |
| 12 | Longitudinal and transverse fracture strength (grab method)/kN ≥ | 0.3 | 0.5 | 0.7 | 1.1 | 1.4 | 1.9 | 2.4 | 3 | 3.5 | |
| 13 | Ultraviolet resistance (Xenon arc lamp method) | Longitudinal and transverse strength retention rate% ≥ | 70 | ||||||||
| 14 | Ultraviolet resistance (fluorescence UV lamp method) | Longitudinal and transverse strength retention rate% ≥ | 80 | ||||||||
Product Applications:
1. Hydraulic Engineering
Seepage prevention of dams, laying of filter layers to prevent piping and soil erosion; reinforcement of river and reservoir slopes to resist water scouring.
2. Traffic Engineering
Separate the soil layer and gravel layer in the road and railway subgrades to enhance bearing capacity and reduce settlement; reinforce the foundation of airport runways to improve stability.
3. Environmental Protection Projects
Anti-seepage at the bottom and slopes of landfills (in conjunction with HDPE membranes) to prevent pollutant leakage; anti-seepage and filtration of sewage treatment tanks to assist in water purification.
4. Geotechnical and Slope Engineering
Fixing soil in landslide protection, draining and isolating during foundation pit excavation, and preventing tailings from flowing away in mine treatment.
5. Agriculture and Ecology
Anti-seepage and drainage of farmland irrigation channels to improve water resource utilization; water retention and soil fixation in saline-alkali land improvement and desert greening.
