• Geotextiles
• Products
• Functions
• Reinforcement and stabilization
• Separation
• Protection
• Filter and drainage
• Applications
• Advantages
• Storage & Installation
• References
• Manual & Brochure
• Roofing
• Home & Garden
• Surface Protection
• Mattresses
• Upholstered forniture
• Carpets
• Medicals
• Automotive
• Specials

Geotextiles > Functions

Separation

Separation is the function of a geotextile used to prevent mixing of a subgrade or sub-base soil and an aggregate cover material (sub-base, base, select embankment) in civil engineering  works as road and railways constructions .

This is the most important geotextile function for roads, particularly when building on weak to moderate strength subgrade soils. When weaker soils and/or wet conditions are encountered, higher strength nonwoven Tessilbrenta geotextiles are commonly used for roadway stabilization. Therefore, equally as important as separation, a properly selected stabilization geotextile and the overlying free draining base layer can improve "filtration and drainage" of the subgrade providing a means for dissipating excess pore water pressures.

» Hipertex® » Perdura®		» ROADS » RAILROADS » DEWATERING TRENCHES » PAVEMENTS