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Coir Geotextiles

Another notable coir-based product you can source from Sri Lanka is coir geotextile which is increasingly used for bioengineering in civil infrastructure projects. Coir geotextile is a blanket made out of coir fibre.

It is widely used to prevent soil erosion on the road and railway embankments, riverbanks, leisure grounds and in industrial areas as well as in cultivation areas.

Coir geotextiles have the mechanical strength required to hold soil in place and prevent erosion. The nettings break up the runoff and dissipate the energy of flowing water. The coir geotextile replaces polymer fabric such as Polypropylene, Polyester and Nylon, etc. reducing its impact on the environment.  On top of being 100% organic and biodegradable, coir also provides an ecological niche for the establishment of new vegetation by absorbing water and preventing drying out of the topsoil and seeds.

How does Geotextile work? 

Geotextiles are anchored into place to provide a continuous sheet over the exposed slope or surface. This sheeting reduces raindrop impact, runoff velocity and surface erosion on disturbed soils. It also protects new vegetation and induces the growth and establishment of vegetation by blocking the evaporation of soil moisture.

Different Varieties of Coir Geotextiles

Sri Lankan Coir geotextiles manufacturers produce both woven and non-woven varieties for bioengineering, including:

  • Geo meshes
  • Girds
  • Geo beds
  • Anti-weed blankets
  • Needled felts
  • Erosion control blankets
  • Coir/ water logs

Why use Coir Geotextile?

Here are a few good reasons to go for coir geotextile.

  • 100% organic & bio-degradable
  • Boasts the highest longevity among the natural ones (effective lifespan up to 5 years)
  • Forms humus and enriches the soil when it degrades after 5 years or so
  • Naturally resistant to rot & mould requiring no chemical treatments
  • Retains water and prevents drying out of the topsoil. Absorbs soil radiation as much as natural soil so that saplings won’t get heated excessively.

Common Applications of Geotextile

Here are a few common applications of geotextile among hundreds of others.

  • Unpaved and paved roads in airport runways
  • Landfills and stone base courses
  • Sidewalks and sand drainage layers
  • Parking lots and curb areas
  • Green areas and recreational facilities
  • Retaining wall structures
  • Duct banks and pipe trenches
  • Coastal Protection structures

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