Geotextiles

BY:Ashutosh Vatsa

What is Geotextile?

• Permeable geosynthetics comprised solely of textiles.

Or it could be defined as:

• Permeable fabrics which, when used in association with soil, have the ability to separate, filter, reinforce, protect, or drain.

Types of Geotextiles

• Typically made from polypropylene, polyethylene, polyamides or polyester.

• Geotextiles could be woven as well as non-woven.o woven (looks like mail bag sacking)o Non-woven

needle punched (looks like felt) heat bonded (looks like ironed felt)

Functions of Geotextiles

• Separation• Stabilization• Filtration

• Geotextile composites - geogrids and meshes have been developed.

• These materials are referred to as geosynthetics and each configuration -geonets, geogrids and others can yield benefits in geotechnical and environmental engineering design.

Applications of Geotextiles

• Roadways, parking lots, loading areas and construction sites

• Prevent drainage systems from clogging with fine particles

• Fluid transmission• For waterway erosion control• Reduce soil piping and embankment erosion• Prevention of weed growth (in horticulture

applications)• Moisture conservation (in horticulture applications)

• Civil engineering applications including roads, airfields, railroads, embankments, retaining structures, reservoirs, canals, dams, bank protection use Geotextiles as raw materials.

• Geotextiles can improve soil strength at a lower cost than conventional soil nailing.

Geotextiles: The fabric of Erosion Control

• Coir (Geotextile) is a popular solution for erosion control, slope stabilization and bioengineering, due to the fabric's substantial mechanical strength.

• Coir last approximately 3 to 5 years depending on the fabric weight. The product degrades into humus, enriching the soil.

Geotextiles replacing Hydroseeding

Hydroseeding is a process of planting grass that is fast, efficient and economical on sloppy surfaces where soil erosion is a major problem.Geotextiles are superior than hydroseeding• when the growing season is short and plants

cannot stabilize the slope quickly, • At high altitudes • where major storms are a frequent occurrence.