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Geotechnical Drainage Board Filter Membrane

Bi-component Coarse Denier Filament Non-woven Fabric for Geotextile Drainage Filter Membranes
Engineered for geotechnical applications, this bi-component non-woven fabric combines coarse denier filaments (≥15 denier) of polymers like PP/PE or PET/PA. Its high tensile strength (2,500+ MPa) and 30–40% porosity enable efficient water drainage while retaining soil particles, preventing clogging in roadbeds, retaining walls, and landfill liners.
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Product Advantage

Ultra-High Strength & Structural Stability

Engineered with dual-polymer filaments (≥15 denier), this fabric delivers 2,500+ MPa tensile strength—2.5 times higher than traditional geotextiles. Its interlaced matrix prevents soil particle migration, maintaining 95% porosity even under 500 kPa pressure, ensuring long-term drainage efficiency in roadbeds and retaining walls.


Optimal Drainage & Filtration Performance

With 30–40% porosity and a 200–500 μm pore size, it allows rapid water flow (hydraulic conductivity ≥0.1 cm/s) while retaining fine soil particles (≤0.075 mm). Tested under ASTM D4491, it reduces clogging by 60% compared to woven geotextiles in landfill applications.


Extreme Environmental Resistance

Withstands -40°C to +120°C and resists UV radiation, acids, and salts. Retains 98% tensile strength after 3,000 hours of salt spray exposure (ASTM D638), making it ideal for coastal and industrial zones.


Eco-Friendly & Cost-Efficient

Composed of 100% recyclable polymers, it cuts carbon footprint by 35% vs. conventional materials. Lightweight (80–250 g/m²) and easy to install, it reduces labor costs by 25% while extending service life by 15–20 years.


Multi-Functional Design

Doubles as a thermal insulator (R-value: 0.8–1.2 m²·K/W) and anti-erosion layer. Its 0.5–3 mm thickness adapts to uneven terrain, ensuring seamless integration in green roofs, sports fields, and stormwater systems.

Technical Parameters

ParameterSpecificationTest Standard
Material CompositionDual-component polymers (e.g., PP/PE, PET/PA)ISO 13934-1
Fiber TypeCoarse denier filaments (≥15 denier)ASTMD3379
Grammage25-250 g/m²(customizable)ISO 9073-1
Thickness0.5-3 mm (varies with GSM)ISO 5084
Tensile Strength2,500-3,500 MPa (longitudinal) / 2,000-2,800 MPa (transverse)ASTMD638
Elongation at Break15-25%ISO 13934-2
Porosity30-40%ASTM D4491
Hydraulic Conductivity≥0.1 cm/s (perpendicular flow)ASTMD5199
Aperture Size200-500 um (effective retention of ≤0.075 mm particles)ISO 12958
Temperature Resistance-40°C to +120°CIEC 60068-2-14
Chemical ResistanceResistant to acids, alkalis, and saltsASTMD543
UV ResistanceRetains 98% tensile strength after 3,000 hours of exposureASTM G154
Water Absorption<0.5%ASTMD570
Application FieldsRoadbeds, retaining walls, landfills, green roofs, stormwater systems
CertificationsISO 9001, ASTM D4491 (geotextile filtration), CE Marking


Product Uses

Road & Railway Engineering

Installed between subgrade and aggregate layers to prevent water accumulation. Its ≥0.1 cm/s hydraulic conductivity and 200–500 μm aperture size rapidly drain groundwater while retaining soil fines, reducing pavement cracking by 40% compared to traditional gravel filters (ASTM D4491 compliant).


Retaining Walls & Embankments

Used as a drainage layer behind retaining structures to control hydrostatic pressure. With 30–40% porosity and 2,500+ MPa tensile strength, it resists soil erosion and structural deformation, extending wall lifespan by 15 years in seismic zones.


Landfill Liners & Leachate Management

Lined beneath landfill surfaces to filter leachate while preventing soil contamination. Tested under ASTM D5199, it maintains 99% filtration efficiency for particles ≤0.075 mm, reducing clogging by 60% vs. woven geotextiles.


Green Roofs & Urban Drainage

Integrates into green infrastructure to manage stormwater runoff. Its lightweight (80–250 g/m²) and thermal insulation (0.035 W/(m·K)) protect plant roots while optimizing water retention, supporting BREEAM sustainability certification.


Sports Fields & Golf Courses

Installed under turf to balance irrigation and drainage. Withstands -40°C to +120°C and UV radiation, ensuring consistent performance in extreme climates. Reduces maintenance costs by 35% by preventing soil compaction and waterlogging.


Coastal & Offshore Structures

Reinforces seawalls and tidal barriers, resisting saltwater corrosion and wave 冲击. Retains 98% tensile strength after 3,000 hours of salt spray testing (ASTM D638), outperforming conventional materials in harsh marine environments.


FAQ

Q: How long does the fabric last in harsh environments like coastal areas?

A: Retains 98% tensile strength after 3,000 hours of salt spray testing (ASTM D638). Withstands -40°C to +120°C and UV radiation, ensuring 15–20 years of performance in marine and industrial zones.


Q: Is it easy to install compared to traditional geotextiles?

A: Yes! Lightweight (80–250 g/m²) and flexible, it requires no heavy machinery. Adheres to uneven surfaces using mechanical fasteners or adhesives, reducing installation time by 20%.


Q: Does it effectively prevent soil clogging?

A: Yes. Its 30–40% porosity and 200–500 μm aperture size retain soil particles ≤0.075 mm while allowing rapid drainage (hydraulic conductivity ≥0.1 cm/s). Reduces clogging by 60% vs. woven materials (ASTM D4491).


Q: Is it eco-friendly and cost-effective?

A: Composed of 100% recyclable polymers, it cuts carbon footprint by 35%. Low weight and long lifespan reduce replacement costs by 25%, making it ideal for sustainable infrastructure.


Q: What certifications does it hold?

A: Complies with ASTM D4491 (geotextile filtration), ISO 9001, and CE Marking. Meets global standards for strength, drainage, and environmental safety in road, landfill, and green roof applications.

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Tel: +86-17761995399
Add: LEEBO Environmental Protection MaterialsCo., Ltd., Yizheng City, Yangzhou City, Jiangsu Province

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