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Coir erosion control blanket can be either woven or non-woven. Woven ECB is an open weave structure with large / small open mesh.
Non-woven ECB is either needle punched or stitch bonded.These materials are useful in erosion control and re-vegetation on slopes less than 50 degrees or in channels, where water flow rates are between 1 and 4 m/s.
The hairy nature of the yarn used for making the blanket breaks the falling raindrop into droplets, thus decreasing their erosive action. The material absorbs water, around 3 times its own weight. Coir geotextile lasts for 3 to 5 years and degrades to form humus which is useful for plant growth.
Application:
Prod | Wt. (G/sqm) | Tensile strength Dry Kn/m | Length X Width m | Recommended | Water Flow (m/sec) |
---|---|---|---|---|---|
FC-400 | 400 | 2 | 50X2 | Err:510 | <2.0 |
FC-700 | 700 | 3 | 50X2 | 30 to 40 degree slope length < 10 m, Canal lining, landfill capping | <3.0 |
FC-701 | 700 | 5 | 50X2 | 30 to 40 degree slopes length >10 to 25 m, landfill capping | <3.0 |
FC-900 | 900 | 5 | 50X2 | Road over soft soil, Canal lining | <4.0 |
Weight | Width (m) | Length (m) | Tensile strength (klSI/m) | Water Flow Velocity (m/sec) | Shear Stress (kg/sq.m) |
---|---|---|---|---|---|
350 - 400 | 2.4 | 42 | >10 | 4 | 1 |