Definition - What does Geotextile mean?

Geotextiles refers to a permeable synthetic textile material. Generally it is produced from polyester or polypropylene polymers. Geotextiles are used to increase soil stability, provide erosion control or aid in drainage.

An array of geotextiles can be produced using varied polymers and manufacturing processes that make them useful in a variety of civil construction applications. Geotextile and geosynthetics products such as geogrids, geonets and others are also suitable in geotechnical and environmental engineering design.

Corrosionpedia explains Geotextile

Geotextiles are permeable textiles or fabrics used to separate, filter, reinforce, protect, or drain. In roads and rail applications, they allow filtration and separation of granular layers. They are also used to protect membranes in landfill applications and in coastal defense applications. Geotextiles are high in strength to allow for maximum slope support, stabilization and erosion control. There are three types of geotextiles: non-woven, woven or knitted.

Non-woven geotextiles - mostly known as filter fabrics - are typically used in aggregate drains, asphalt pavement overlays and erosion control.

Woven geotextiles have a planar textile structure that may be either flat slit films or round monofilaments. Woven slit-film geotextiles are typically used where high strength properties are needed and filtration requirements are less critical. Woven monofilament geotextiles get priority where both strength and filtration needs to be considered e.g., shoreline rip rap applications.

Knitted geotextiles are manufactured using a knitting process. In this process, an interlocking series of loops of yarn is made.

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