Geotextile are permeable fabrics, made from either polypropylene or polyester. When used in several different applications, mainly associated with soil, geotextiles have the ability to separate, filter, reinforce, protect, or drain. Geotextile fabrics come in three basic forms: non- woven geotextiles, woven geotextiles (needle punched), or heat bonded geotextiles (structural woven).
To provide effective filtration, drainage and separation of engineering materials in a variety of construction structures associated with a range of transportation and associated infrastructure activities, the use of geotextiles has gained tremendous acceptance over the last 30 years. Geotextile materials, when selected appropriately, allow for the replacement of traditional granular filter and drainage layers, providing a significant environmental and economic benefit.
Geotextile are a relatively inexpensive product that, when designed and installed correctly, can replace traditional granular treatments with significant cost savings, both in aggregate quantities used and traditional labor costs to install such aggregate systems.