An Overview the Function of Coir Geotextiles

Coconut geotextile is a natural material and a permeable textile material used to improve soil characteristics. It has the ability to separate, filter, strengthen, protect and drain when used in combination with soil. Coconut Geotextile is an ideal material for many infrastructure works such as roads, ports, landfills, drainage facilities and other civil projects.

Coconut geotextile is very useful for soil reinforcement at a relatively low cost compared to other soil reinforcement methods. In addition, in molds with good resistance, so that the earth does not sink easily. Coir geotextile is a natural solution to prevent large-scale erosion/degradation of soil quality.

Coir geotextile is made from coconut fiber, which is processed by shredding it in a coir shredding machine. The coconut fiber is cut into small pieces and then sifted with a coconut fiber sifter to obtain individual fibers. This fiber is then spun on a spinning machine, the diameter of which can be adjusted as needed.

Categories of Coconut Geotextile

Coconut geotextile is made from coconut fiber that has gone through various processes. Being a natural product, coconut geotextile is biodegradable and environmentally friendly. According to the method of preparation, they are divided into 2 categories:

  • Coconut Woven Geotextile
  • Non-Woven Coir Geotextile

1. Coconut Woven Geotextile

This form is the simplest. Coconut geotextiles are traditionally handcrafted using the twin-rod weaving technique. This form is mainly used for erosion control. Most of these variations are made depending on the intensity of precipitation, soil type and surface slope. Each variety can be identified by weight per m2 and yarn type.

2. Non-woven coconut geotextile

Coir type geotextile is often referred to as coconut fiber filter cloth. It is made from the same materials as coconut non-woven geotextile in the form of felt, not weaving. Coconut fibers are pressed and heated with a special adhesive.

Generally, both types of coir geotextile perform the same function. That’s just their use depends on the type of soil and the purpose of the structure being built.

Uses and Functions of Coconut Coir Geotextile

How coconut geotextile performs in any application is defined by three separate functions:

1. Filters

Coco geotextile has high permeability properties, so it is able to drain water through the coco geotextile. The flow of water will carry soil particles, so the coir geotextile acts as a filter or filter through which water can still flow, but the soil particles do not penetrate the coir geotextile.

2. Separator

Coconut geotextile is known to be effective in preventing soft ground from mixing with subgrades, such as in road construction on soft ground. Often the soft soil of the foundation rises. The role of the coconut geotextile is to prevent loose soil from rising up onto the pavement.

Firstly, the advantage of coconut geotextile is that it has good extensibility and can withstand the resulting frictional force, so it is very convenient to use as a separator between soft soil and the pavement above.

3. Sealing

A layer of non-woven coconut geotextile is impregnated between the existing and new asphalt layers. The geotextile absorbs asphalt to form a waterproofing membrane, minimizing vertical water flow in the pavement structure.

The scope of coconut geotextile in the field of mechanical engineering is very wide. The application of coir geotextile is given under the heading “Nature of work”.

  • Stabilization of sloping soils serves to enhance and control erosion.
  • Ground wall reinforcement serves for reinforcement and drainage
  • Road stabilization features for filtration, drainage, separation, reinforcement and containment
  • Railway, channel stabilization function for filtering, separating, strengthening localization
  • Backfilling over soft soil is used for filtering, separation, and reinforcement and erosion control.
  • Landfill functions for filtration, drainage, separation, protection and sealing
  • Slope erosion control is used for erosion control and containment
  • The reclaimed soil is used for filtration, separation and reinforcement.
  • Reinforcement of river banks serves to filter, separate and control erosion.

It can be seen from the above coco geotextile and features that there is a big difference between features and applications. These various functions can be performed mainly by coir geotextiles.

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