Geotextile is a thin, flexible, permeable sheet of synthesis used for stabilization and soil improvement attributed to civil engineering work. Utilization of geotextiles is a modern way of trying to soft soil reinforcement. For more information about geotextile, you can see at http://www.maccaferri.com/my/products/geotextile-mactex/.
Some function from geotextiles are:
- for soft soil reinforcement.
- for the construction of civil engineering having a long enough plan life and supporting large loads such as rail and retaining walls.
- as a field separator, filter, drainage and as a protective layer.
Geotextile can be used as retrofitting of soil in case:
- Soil deposits on soft soil
- Dredge on pile foundation
- Dumps on subsidence-prone land
The use of retrofit construction on wetlands was first reported using stainless steel under heap construction in tidal areas in France. Comparison of stockpiles on peat soils in Africa with and without reinforcement is reported. It was stated that in addition to woven polypropylene fabric, the tensile stresses of all geotextile types taken for example from the previous year’s installation were reduced from 25% to 36% of the initial tensile stress, although they did not have much effect on their function.
Implementation of road construction on wetland with geotextile reinforcement may prevent local collapse in soft soil due to low soil bearing capacity. The advantage of mounting geotextiles on the implementation of roads over soft soils is the speed at which the execution and cost are relatively cheaper compared to conventional stockpiling methods
Type of geotextile is 2, that is;
- Woven Geotextile
- Non-Woven Geotextile
The use of Woven Geotextile will give better results because the direction of the force can be adjusted with the direction of the fiber, so that deformation can be controlled properly.
In non-Woven Geotextile the direction of fiber in geotextile structure is not directed, so that when burdened, it will happen a very large deformation, and difficult to control.
In the use of geotextiles we must establish the reinforcement of what is required, along with the factors to be considered;
- The type of geotextile to be used
- The nature of the relationship and strain, it is necessary for the deformation that occurs in the construction of small reinforcement.
- Load properties, Strengthening on soft soil, larger embankment loads will require retrofitting with greater tensile strength.
- Environmental conditions, Changes in weather, sea water, acid or base conditions and micro-organisms such as bacteria will reduce the strength of geotextile.
- Material embankment to be used
Installation of Goetextile
Geotextile on the road serves as a reinforcement layer as well as a separator between the pile material and the ground so that the road construction becomes stable, not wavy and flat on its surface.
Some advantages of using geotextiles, including:
- Prevent subbase and base aggregate contamination by soft bottom soils and distribute effective traffic load through layers of embankment.
- Eliminate the loss of aggregate stockpiles into soft base soils and minimize the costs and additional needs of ‘wasted aggregate layers’.
- Reduce the thickness of trench stripping and minimize preparatory work.
- Increase the aggregate resistance of the embankment to local collapse at the load site by strengthening the embankment.
- Reduce the uneven decline and deformation and deformation of the finished structure.
Method / Method of Installation of Geotextiles;
- Geotextile should be deployed above ground in a state without waves or wrinkles.
- The geotextile connection of each sheet is mounted overlapping to the next sheet.
- In the curve-mounting area (eg road curves), geotextiles are fitted in the direction of the curve.
- Do not overlap or stitch the area in the direction of the wheel load (traffic load).
- If Geotextile is installed for direct exposure to sunlight then used black colored geotextile.