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Performance Evaluation of Coir Geotextile for Stabilization of Subgrade and Subbase Soil In Rural Roads Construction


Vishwanath , Guru Nanak Dev Engineering College, Bidar; MD Nawaz Pasha, Guru Nanak Dev Engineering College, Bidar; Poojarani Reddy, Guru Nanak Dev Engineering College, Bidar; Ragini Bacha, Guru Nanak Dev Engineering College, Bidar; Ritu Rathod, Guru Nanak Dev Engineering College, Bidar


Black Cotton (BC) soil, Coir Geotextile (CGT), Subgrade, Granular Subbase (GSB), Rural RoadS


Considerable length of roads planned to be constructed in India under various programmes require construction over poor subgrade soils. The performance of a road largely depends on properties of the subgrade soil. One such subgrade soil often encountered is the black cotton (BC) soil. It is inorganic clay of medium to high compressibility, high shrinkage and swelling property, very hard when dry, but lose its strength completely when in wet condition. As a result of wetting and drying process, vertical movement takes place in the soil mass leading to failure of pavement, in the form of settlement, heavy depression, cracking and unevenness. In order to improve the performance of roads on such soils Coir textile has scope as reinforcement. It is expected that with the inclusion of coir geotextile layer below Granular Subbase (GSB) layer would be helpful in restricting the movement of upper pavement layers due to seasonal moisture variation in subgrade expansive, shrinkable soil. A pilot project plan for implementing the idea has been proposed in the paper.

Other Details

Paper ID: IJSRDV8I110019
Published in: Volume : 8, Issue : 11
Publication Date: 01/02/2021
Page(s): 46-49

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