what are types of geotextiles
The main types of geotextiles are:
- Non-woven geotextiles – Made of thermally or chemically bonded fibers, these are versatile and common. They have low to moderate strength and filtration properties.
- Woven geotextiles – Made by interlacing fibers or yarns, they have higher tensile strength and durability. Often used in road construction.
- Knitted geotextiles – Produced by interlocking fibers or yarns, knitted geotextiles have good permeability and flexibility for drainage applications.
- Spunbonded geotextiles – Continuous filaments are sprayed and bonded together for high strength soils separation layers.
- Needlefelted geotextiles – Fibers are mechanically bonded by barbed needles for tensile strength and drainage performance.
- Geogrids – Plastic grids made by stretching and bonding polymer sheets, used for reinforcement under roadways.
- Geomembranes – Very impermeable plastic sheets used for lining landfills, ponds or where no fluid transmission is wanted.
- Geocomposites – Prefabricated multilayer mats combining geotextiles with other materials like drainage nets or plastic cores.
Selection depends on the specific engineering properties required – tensile strength, permeability, filtration, toughness, longevity, chemical resistance, and project specifications. Proper identification ensures the right geotextile performs as needed.
