Application Cases of Spunbond Nonwoven Geotextiles
Application Cases of Spunbond Nonwoven Geotextiles
1. Road and Railway Construction
Project: Highway Reinforcement in Texas, USA
Challenge: Weak subgrade soil prone to erosion and differential settlement.
Solution: A 200 g/m² spunbond nonwoven geotextile was installed between the subgrade and aggregate base layer.
Results:
· Improved load distribution and reduced rutting.
· Prevented soil migration, extending the road’s lifespan by 30%.
· Reduced maintenance costs by 25% over 5 years.
Key Benefits: Separation, filtration, and reinforcement.
2. Landfill Liners and Caps
Project: Municipal Solid Waste Landfill, Germany
Challenge: Protecting groundwater from leachate contamination.
Solution: A 300 g/m² spunbond geotextile was used as a protective layer above the geomembrane liner and below the drainage layer.
Results:
· Enhanced puncture resistance for the geomembrane.
· Improved drainage efficiency while filtering particulates.
· Compliance with EU environmental regulations.
Key Benefits: Protection, filtration, and durability in harsh chemical environments.
3. Coastal Erosion Control
Project: Shoreline Stabilization, Netherlands
Challenge: Wave action eroding sandy coastal areas.
Solution: Spunbond geotextile tubes (500 g/m²) filled with local sand were deployed as breakwaters.
Results:
· Reduced wave energy by 40%, preserving the coastline.
· Vegetation regrowth observed within 12 months.
· Cost-effective compared to concrete structures.
Key Benefits: Permeability, UV resistance, and adaptability to dynamic environments.
4. Drainage Systems
Project: Urban Stormwater Management, Singapore
Challenge: Clogging of subsurface drainage pipes due to fine soil particles.
Solution: Spunbond geotextile (150 g/m²) wrapped around perforated drainage pipes.
Results:
· Sustained hydraulic conductivity over 8 years.
· Reduced sedimentation in pipes by 90%.
· Minimal maintenance required.
Key Benefits: Long-term filtration and anti-clogging performance.
5. Slope Stabilization
Project: Mountain Highway Slope, China
Challenge: Landslide risks due to heavy rainfall.
Solution: Layered spunbond geotextile (250 g/m²) combined with vegetation (grass planting).
Results:
· Slope stability achieved within 6 months.
· Erosion reduced by 70%.
· Aesthetic integration with the natural landscape.
Key Benefits: Biodegradability (optional), tensile strength, and erosion control.
Conclusion
Spunbond nonwoven geotextiles demonstrate versatility across infrastructure, environmental, and geotechnical projects. Their key advantages include:
· High tensile strength and elongation.
· Excellent permeability and filtration properties.
· Resistance to biological degradation and chemicals.
· Cost-effectiveness and ease of installation.
For customized solutions, engineers should select geotextile specifications (weight, thickness, permeability) based on site-specific load and hydraulic conditions.
