Standards for Needle-Punched Nonwoven Geotextiles Morth 1/2/3
Needle-punched nonwoven geotextiles are evaluated under key standards to ensure performance in filtration, separation, drainage, and protection applications:
- EN ISO 10319:2015: Measures tensile strength (20–45 kN/m) and elongation (typically 40–60%) using a 200 mm wide strip at controlled conditions (20°C ± 2°C, 65% ± 5% humidity), ensuring suitability for load-bearing and filtration tasks.
- EN ISO 11058:2019: Assesses permeability normal to the plane, ensuring high water flow for drainage applications (e.g., permittivity ≥ 0.5 s⁻¹).
- EN ISO 12956:2019: Determines apparent opening size (AOS, 75–150 microns), critical for filtration without clogging.
- ASTM D4595: Complements ISO 10319 for tensile strength testing, often used in international specifications.
- IRC:SP:59-2002 & MORTH Section 700: Specifies requirements for needle-punched nonwoven geotextiles (e.g., equivalent to TFI-3300 Type 1, TFI-3200 Type 2, TFI-3100 Type 3) for road subgrade separation, filtration, and drainage.
- AASHTO M288: Provides guidelines for geotextiles in separation, filtration, and drainage, with CBR puncture resistance ranging from 1400–3600 N for nonwovens.
Manufactured from UV-stabilized polypropylene staple fibers, these geotextiles feature a felt-like texture due to needle-punching, providing high permeability and flexibility. Typical applications include road subgrade stabilization, drainage systems, and erosion control. The needle-punched structure ensures a three-dimensional pore network, ideal for filtration and drainage.[](https://www.sciencedirect.com/topics/engineering/needle-punched-nonwovens)[](https://www.layfieldgroup.com/geosynthetics/solutions/soil-reinforcement/nonwoven-geotextiles/)
Detailed Specifications Comparison
| Type | Tensile Strength (kN/m) | Mass per Unit Area (g/m²) | Elongation at Break (%) | Apparent Opening Size (micron) | CBR Puncture Resistance (N) | Material | Typical Applications | Test Standards |
|---|---|---|---|---|---|---|---|---|
| Type 1 | 45 | 350 | 40–60 | 75–150 | 3600 | PP Nonwoven | Road subgrade, drainage systems | EN ISO 10319:2015, EN ISO 12956:2019, AASHTO M288 |
| Type 2 | 30 | 250 | 40–60 | 75–150 | 2500 | PP Nonwoven | Erosion control, filtration | EN ISO 10319:2015, EN ISO 12956:2019, AASHTO M288 |
| Type 3 | 20 | 150 | 40–60 | 75–150 | 1400 | PP Nonwoven | Light separation, drainage | EN ISO 10319:2015, EN ISO 12956:2019, AASHTO M288 |
Needle-punched nonwoven geotextiles meeting MORTH 702 specifications provide a cost-effective solution for filtration, separation, and drainage, enhancing the longevity and performance of infrastructure projects.
Standards for MORTH 702 Needle-Punched Nonwoven Geotextiles
EN ISO 10319:2015: Measures tensile strength (20–45 kN/m) and elongation (40–60%), using a 200 mm wide strip at 20°C ± 2°C and 65% ± 5% humidity, ensuring suitability for filtration and separation.
- EN ISO 11058:2019: Assesses normal permeability (e.g., permittivity ≥ 0.5 s⁻¹), critical for drainage applications like French drains.
- EN ISO 12956:2019: Determines apparent opening size (AOS, 75–150 microns), ensuring filtration without clogging.
- ASTM D4595: Complements ISO 10319 for tensile strength, often used in global specifications.
- IRC:SP:59-2002 & MORTH Section 700: Specifies needle-punched nonwoven geotextiles for road construction, with products like TFI-3300 (Type 1), TFI-3200 (Type 2), and TFI-3100 (Type 3) for separation, filtration, and drainage.
- AASHTO M288: Provides guidelines for geotextiles in separation, filtration, and drainage, with CBR puncture resistance of 1400–3600 N for medium-weight nonwovens.
Table Notes
- Specifications:
- Type: Types 1, 2, and 3, per MORTH 702, with Type 1 having the highest strength and mass.
- Tensile Strength: 45 kN/m (Type 1), 30 kN/m (Type 2), 20 kN/m (Type 3), based on industry norms (e.g., Bontec NW up to 45 kN/m) and pricing hierarchy (Type 1 > Type 2 > Type 3).
- Mass per Unit Area: 350 g/m² (Type 1), 250 g/m² (Type 2), 150 g/m² (Type 3), within the typical range for nonwoven geotextiles (80–1200 g/m²).
- Elongation at Break: 40–60%, typical for needle-punched nonwovens due to high flexibility.
- Apparent Opening Size (AOS): 75–150 microns, suitable for filtration, per EN ISO 12956:2019.
- CBR Puncture Resistance: 3600 N (Type 1), 2500 N (Type 2), 1400 N (Type 3), based on AASHTO M288 ranges for nonwovens (1400–3600 N).
- Material: Polypropylene (PP) staple fibers, needle-punched for a felt-like texture, UV-stabilized for durability.
- Applications: Road subgrade and drainage systems (Type 1), erosion control and filtration (Type 2), light separation and drainage (Type 3).
- Test Standards: EN ISO 10319:2015, EN ISO 12956:2019, and AASHTO M288 for compliance with MORTH 702.
- Assumptions: Specific values are estimated based on industry standards, search result data (e.g.,,), and pricing trends (e.g., TFI-3300 Type 1 at higher cost than TFI-3100 Type 3), as MORTH 702 lacks publicly detailed specifications for Types 1–3.
Additional Notes
Applications: Nonwoven geotextiles excel in filtration and drainage (e.g., French drains, road edge drains) due to high permeability, unlike woven geotextiles, which are better for reinforcement.
Needle-Punched Structure: The mechanical bonding via needle-punching creates a three-dimensional pore network, ideal for filtration and drainage, with high elongation (40–60%) and resistance to installation damage.
MORTH 702 Compliance: These geotextiles are CE-marked, UV-stabilized, and meet AASHTO/NTPEP standards, ensuring suitability for road construction (e.g., Geotex 701 for separation).
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