EARTH ROAD AND CONSTRUCTION
When the foundation and wearing surface of the road consists of one or
two compacted layers of an ordinary soil or stabilized soil then such
road is called as “Earth Road’
There are mainly two types of earth roads :
1.Ordinary Earth Road.
2.Stabilized Earth Road.
Construction Procedure of Earth road Work:
There are only 2 materials required for the construction of earth road .Natural soil or the soil that is available locally and suitable stabilizer if required for the given conditions.
1. First of all proper survey of the site is done.selection of area for borrow pits is kept outside the land with of earth road. Center line is fixed and pegs are driven for reference of verticals profile of road.
2. Before excavation the site is totally cleaned from shrubs, trees, grass and other organic matter.
3. After the excavation process, the sub-grade of road is prepared. It is provided with sufficient camber and proper gradient. Generally the thickness of the pavement construction decides the depth of sub-grade.
4. After the preparation of the sub-grade it is properly compacted by rolling operation with the help of rollers. Sufficient amount of water is sprinkled along with rolling operation for proper compaction.
5. After the compaction another layer of graded soil is laid after sprinkling of water. The thickness of this layer is kept between 8-12 cm.
6. After the final work the camber of the earth road is properly checked and if found faulty it is then needed to be corrected.
7. After the construction of earth road, it is needed to be cured with sufficient amount of water for 4-5 days.
8. After proper curing is done the earth road is allowed to dry for minimum of 3 days and then it is opened for traffic.
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