what is geotextile fabric
Geotextile fabric, also known as geofabric or geotextile, is a permeable textile material used in various civil engineering and construction applications. It is made from synthetic fibers, typically polypropylene or polyester, and is designed to have specific characteristics to address soil erosion, filtration, drainage, separation, and reinforcement needs.
Geotextile fabric has the following main features and applications:
- Erosion control: Geotextiles can be used to stabilize soil on slopes and prevent erosion caused by water flow or wind. They help to retain soil particles while allowing water to pass through.
- Filtration: Geotextiles act as filters by allowing water to flow through while preventing the movement of fine soil particles. They are used in drainage systems to prevent clogging and maintain the integrity of the system.
- Drainage: Geotextiles with high permeability are used in drainage applications to facilitate water flow, prevent waterlogging, and maintain the stability of the surrounding soil.
- Separation: Geotextiles are used to separate different layers of soil or aggregates with varying characteristics, such as separating subsoil from aggregate materials in road construction. This helps to prevent the mixing and migration of particles, maintaining the integrity and performance of the different layers.
- Reinforcement: Geotextiles can provide reinforcement to soil structures, such as retaining walls and embankments. They enhance the soil’s strength and stability, improving the overall performance and longevity of the structure.
Geotextile fabric comes in various forms, including woven and non-woven varieties. Woven geotextiles are made by weaving fibers together, and have higher strength and stiffness, suitable for reinforcement and separation applications. Non-woven geotextiles are made by bonding or stitching fibers together, and have higher flexibility and permeability, suitable for filtration and drainage applications.
It is very important to choose the appropriate type and weight of geotextile fabric according to the specific application and site conditions. Consulting a geotechnical engineer or a professional in the field can help you determine the most suitable geotextile fabric for your project.
