How do the properties of woven and non-woven geotextiles differ in terms of their applications in road construction?

by AGU

Woven and non-woven geotextiles have distinct properties that make them suitable for different applications in road construction. Here’s a comparison of their properties and applications:

1.Structure and Manufacturing:

Woven Geotextiles: Woven geotextiles are manufactured by interlacing polypropylene or polyester yarns in a woven pattern. They have a regular structure with visible pores between the yarns.
Non-woven Geotextiles: Non-woven geotextiles are produced by mechanically bonding or needle-punching synthetic fibers together. They have a random fiber orientation and a more homogeneous structure compared to woven geotextiles.

2.Strength and Load Distribution:

Woven Geotextiles: Woven geotextiles have high tensile strength and stiffness, making them suitable for applications that require load distribution, reinforcement, and stabilization. They can withstand relatively higher loads without significant deformation.
Non-woven Geotextiles: Non-woven geotextiles have lower tensile strength compared to woven geotextiles. However, they offer excellent resistance to puncture and tearing. Non-woven geotextiles are typically used for applications that require filtration, separation, and erosion control.

3.Filtration and Drainage:

Woven Geotextiles: Woven geotextiles have relatively larger pore sizes between the woven yarns. While they provide some filtration and drainage capabilities, their primary function is often separation and reinforcement.
Non-woven Geotextiles: Non-woven geotextiles exhibit excellent filtration properties due to their random fiber orientation and smaller pore sizes. They allow water to pass through while retaining fine particles, making them suitable for filtration and drainage applications in road construction.

In summary, woven geotextiles are commonly applied in road construction for functions such as separation, reinforcement, and stabilization, while non-woven geotextiles are preferred for filtration, drainage, erosion control, and soil retention.