Here at Mancil’s, we use a variety of geotextiles based on the specifications of a given project. As I mentioned in our previous blog involving the use of geogrids, geotextiles are made from the same synthetic polymer that is woven, knitted or non-woven. These fabrics are versatile and can be used for roadways, landscaping, drainfields or other engineering purposes. A geotextile is typically any permeable textile material used to sustain soil stability, provide erosion control and aid in drainage. Permeable textile, meaning, that gases and fluids can pass through these fabrics making it suitable for use in situations where a blockade is required, but the transmission of water and air through the barrier is necessary, such as for landscaping purposes. When the fabric is a barrier between plants or crops, the airways allow the plants to grow and in return helps prevent weeds from taking over. Mancil’s rarely uses geotextile fabrics for landscaping purposes, unless it is a requirement for a landscape sub-contractor.
Mancil’s uses these geotextiles more frequently as a filtration layer in septic drainfields consisting of soil or sand and to stabilize roadways, increasing its performance life. Placing a layer of fabric between the soil and stone will allow water and air to pass through, but will keep the soil from passing through the layer of stone. Without this filter fabric, the soil will move through the stone reducing the effectiveness of a drainfield. It is the same for road construction; these geotextiles help as a separator of different aggregates throughout the roadbed. Mancil’s also uses these geotextiles more specifically on slopes in order to hold the soil in place, which helps the passage of water eliminating any buildup of soil water pressure that can destabilize the slope.
Here is a quick overview of the different functions for non-woven fabric and woven fabric in civil applications. Non-woven geotextile fabrics offer superior drainage, filtration and soil reinforcement, which are commonly used in construction projects involving roads, railways and landfills. Woven geotextile fabrics have a better capacity for filtration and are often used in erosion protection, sediment control, paved or unpaved road construction and subsurface drainage. Contact your local suppliers for more information on these products.