Permeable structure
The nonwoven structure allows water to pass through the material while supporting filtration and drainage functions.
Short Fiber Needle-Punched Nonwoven Geotextile
Polyester nonwoven geotextile for separation, filtration, drainage and reinforcement in civil engineering applications.
Manufactured from PET short fibers by needle punching, this nonwoven geotextile is available in a wide range of mass-per-unit-area specifications for infrastructure, drainage and ground-engineering projects.
Product Overview
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Short fiber needle-punched nonwoven geotextile is a permeable geosynthetic material manufactured from PET fibers using a needle-punching process. It is used where separation, filtration, drainage or reinforcement functions are required between soil, aggregate and other construction materials.
Typical applications include highways, railways, dams, drainage systems and other civil-engineering works requiring filtration, separation, drainage or ground reinforcement.
Product facts
- Material
- PET (polyester)
- Structure
- Short-fiber needle-punched nonwoven
- Mass per unit area
- 80–1500 g/m²
- Width
- 1–6.5 m
- Primary functions
- Separation, filtration, drainage and reinforcement
- Applicable standards
- GB/T 17638-1998; GB/T 17638-2017; JT/T 520-2004
Key Features
Separation function
Used between adjacent soil or aggregate layers to help limit material mixing.
Filtration performance
Specified equivalent-opening-size and vertical-permeability requirements support filtration applications.
Mechanical performance
Breaking strength, bursting strength and tearing-strength requirements are defined according to the selected nominal specification.
Material resistance
The technical specification includes reference requirements for acid and alkali resistance, oxidation resistance and UV resistance.
Technical Specifications
Primary technical standard
GB/T 17638-2017
Standard description
Main Technical Performance Indicators of Geotextile
Technical data reference: GB/T 17638-2017.
| Property | Nominal breaking strength — kN/m | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3 | 5 | 8 | 10 | 15 | 20 | 25 | 30 | 40 | |
| Longitudinal and transverse breaking strength — kN/m | ≥ 3.0 | ≥ 5.0 | ≥ 8.0 | ≥ 10.0 | ≥ 15.0 | ≥ 20.0 | ≥ 25.0 | ≥ 30.0 | ≥ 40.0 |
| Elongation corresponding to nominal breaking strength — % | 20–100 | 20–100 | 20–100 | 20–100 | 20–100 | 20–100 | 20–100 | 20–100 | 20–100 |
| Bursting strength — kN | ≥ 0.6 | ≥ 1.0 | ≥ 1.4 | ≥ 1.8 | ≥ 2.5 | ≥ 3.2 | ≥ 4.0 | ≥ 5.5 | ≥ 7.0 |
| Longitudinal and transverse tearing strength — kN | ≥ 0.10 | ≥ 0.15 | ≥ 0.20 | ≥ 0.25 | ≥ 0.40 | ≥ 0.50 | ≥ 0.65 | ≥ 0.80 | ≥ 1.00 |
| Property | Requirement |
|---|---|
| Mass per unit area deviation — % | ±5 |
| Width deviation — % | −0.5 |
| Thickness deviation — % | ±10 |
| Equivalent opening size O90 (O95) — mm | 0.07–0.20 |
| Vertical permeability coefficient — cm/s | K × (10⁻¹ – 10⁻³) K = 1.0–9.9 |
| Property | Requirement type | Requirement |
|---|---|---|
| Acid and alkali resistance — Strength retention, % | Reference requirement | ≥ 80 |
| Oxidation resistance — Strength retention, % | Reference requirement | ≥ 80 |
| UV resistance — Strength retention, % | Reference requirement | ≥ 80 |
Technical Notes
- For specifications between adjacent values listed in the table, the corresponding assessment indicators are calculated by linear interpolation. For specifications outside the listed range, assessment requirements are agreed between supplier and customer.
- Requirements for mass-per-unit-area deviation, width deviation and thickness deviation are determined according to the project design or agreement.
- Tearing strength, acid and alkali resistance, oxidation resistance and UV resistance are reference indicators used for production control. Where specifically required by the customer, acceptance criteria are based on the agreed project requirements.
Discuss your product requirements
Send us your application, required specification, quantity and delivery destination for product review and quotation.
Useful information to provide
- Application
- Required mass per unit area
- Required breaking strength
- Required width
- Quantity
- Project location
- Delivery destination
- Applicable standard or project specification