Coir is a 100% organic fibre, from a renewable source…the coconut husk. Naturally resistant to rot, moulds and moisture, it needs no chemical treatment. Hard and strong, it can be spun and woven into matting. They also have the right strength and durability to protect the slopes from erosion,while allowing vegetation to flourish. They can dissipate the energy of flowing water and absorb the excess solar radiation.
on-site applications for coir geotextiles
coir geo-textiles used for material separation
Separation is the basic use of geotextiles and is widely practised in road works and railway constructions.
coir geo-textiles used for filtration
The characteristic opening size of coir geotextiles is designed to retain particles while allowing free movement of water, making it possible to separate two layers during intense hydraulic activity.
coir geo-textiles used for drainage
Excess water is drained off the construction by flowing in the plane of the geotextile.
coir geo-textiles used for protection
Geotextiles are widely used for protection in waste disposal systems and tunnel constructions to ensure the integrity of a sealing material (e.g. geomembrane) when fill material and/or loads are applied
two shaft woven geotextiles
Two shaft woven geotextiles are used primarily for erosion control; this is the simplest form of geotextiles.
Available in 10 varieties with fixed quality specifications of international standards
Which product is right for which application depends on five criteria:
Rainfall
Type of soil
Slope
Climate
Purpose for use – (just a covering or revegetation)
stages of coir geotextile installation for erosion control
coir geotextile applications
Water course protection including stream bank protection
Shoreline stabilization
Storm water channels
Slope stabilization in railway cutting and embankments
Water course protection
Separation application in rural roads, railways, parking and storage areas
Reinforcement of rural unpaved roads, temporary walls Providing sub base layer in road pavement
Filtration in road drains and land reclamation
Containment of soil and concrete as temporary seeding etc.
Concrete column curing
Fly ash dump waste protection and greening Forestry revegetation
Highway cut and fill slopes
Control of shallow mass waste and gully erosion
As sound barrier
UV protection for under earth crops
Roof top greening
Protection from wind erosion
Storm shuttering
Mulching, antiweed, vegetative water channels
Mine site reclamation
Dune rehabilitation
Wetland environments
Landscaping
Plant and tree protective systems
Mud wall reinforcement
Soil stabilization
Why use coir geotextiles?
Coir Geotextiles offer:
100 % Natural fibre, extracted from coconut husk
Adds organic material to soil
Promotes vegetative growth
100% Bio-degradable and environmentally friendly
Tough, durable, versatile and resilient
High tear-strength resistance
Easy to install / maintain / patch-up.
Follows the contour of the soil surface.
Hygroscopic properties
(absorbing or attracting moisture from the air)
High tensile strength
Coir geotextiles – the natural erosion controller
Coir geotextiles are classified as woven, meshes and nets and non woven, as the blanket held by coir threads.
Coir geotextile nets have varying densities depending on their application, but as a whole they serve as slope stabilization agents prior to revegetation.
Coir geotextiles promote new vegetation by absorbing water and preventing top soil from drying out. Coir geotextiles absorb solar radiation just like natural soil, and unlike geosynthetic materials, it provides good soil support for up to three years, allowing natural vegetation to become established.
The greater the geotextile density, the steeper the embankments it can be utilized on. Applications have included ski slopes and bottom reinforcing material in water courses. (Under water the degradation of coir is slower).
Over a period of time, coir which is ecofriendly and biodegradable, completely disintegrates leaving only humus.
coir blankets can be succesfully utilised in controlling even the steepest of slopes from erosion
Seeding or planting with coir matting is a simple process due to the blankets natural ability to retain moisture and protect from the suns radiation
