Geotextiles

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Geotextiles

  1. 1. Geotextiles BY: Ashutosh Vatsa
  2. 2. What is Geotextile? <ul><ul><li>Permeable geosynthetics comprised solely of textiles. </li></ul></ul><ul><li>Or it could be defined as: </li></ul><ul><ul><li>Permeable fabrics which, when used in association with soil, have the ability to separate, filter, reinforce, protect, or drain. </li></ul></ul>
  3. 3. Types of Geotextiles <ul><ul><li>Typically made from polypropylene, polyethylene, polyamides or polyester. </li></ul></ul><ul><ul><li>Geotextiles could be woven as well as non-woven. </li></ul></ul><ul><ul><ul><li>woven (looks like mail bag sacking) </li></ul></ul></ul><ul><ul><ul><li>Non-woven </li></ul></ul></ul><ul><ul><ul><ul><li>needle punched (looks like felt) </li></ul></ul></ul></ul><ul><ul><ul><ul><li>heat bonded (looks like ironed felt) </li></ul></ul></ul></ul>
  4. 4. Functions of Geotextiles <ul><ul><li>Separation </li></ul></ul><ul><ul><li>Stabilization </li></ul></ul><ul><ul><li>Filtration </li></ul></ul>
  5. 5. <ul><ul><li>Geotextile composites - geogrids and meshes have been developed. </li></ul></ul><ul><ul><li>These materials are referred to as geosynthetics and each configuration -geonets, geogrids and others can yield benefits in geotechnical and environmental engineering design. </li></ul></ul>
  6. 6. Applications of Geotextiles <ul><ul><li>Roadways, parking lots, loading areas and construction sites </li></ul></ul><ul><ul><li>Prevent drainage systems from clogging with fine particles </li></ul></ul><ul><ul><li>Fluid transmission </li></ul></ul><ul><ul><li>For waterway erosion control </li></ul></ul><ul><ul><li>Reduce soil piping and embankment erosion </li></ul></ul><ul><ul><li>Prevention of weed growth (in horticulture applications) </li></ul></ul><ul><ul><li>Moisture conservation (in horticulture applications) </li></ul></ul>
  7. 7. <ul><ul><li>Civil engineering applications including roads, airfields, railroads, embankments, retaining structures, reservoirs, canals, dams, bank protection use Geotextiles as raw materials. </li></ul></ul><ul><ul><li>Geotextiles can improve soil strength at a lower cost than conventional soil nailing. </li></ul></ul>
  8. 8. Geotextiles: The fabric of Erosion Control <ul><ul><li>Coir (Geotextile) is a popular solution for erosion control, slope stabilization and bioengineering, due to the fabric's substantial mechanical strength. </li></ul></ul><ul><ul><li>Coir last approximately 3 to 5 years depending on the fabric weight. The product degrades into humus, enriching the soil. </li></ul></ul>
  9. 9. Geotextiles replacing Hydroseeding <ul><li>Hydroseeding is a process of planting grass that is fast, efficient and economical on sloppy surfaces where soil erosion is a major problem. </li></ul><ul><li>Geotextiles are superior than hydroseeding </li></ul><ul><ul><li>when the growing season is short and plants cannot stabilize the slope quickly, </li></ul></ul><ul><ul><li>At high altitudes </li></ul></ul><ul><ul><li>where major storms are a frequent occurrence. </li></ul></ul>

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