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Volume List  / Volume 8 (1)

Article

EXPERIMENTAL EVALUATION OF COIR MATS TO ENHANCE THE WEAK SUBGRADE SOIL UNDER REPEATED LOADING CONDITION

DOI: 10.7708/ijtte.2018.8(1).09


8 / 1 / 125-134 Pages

Author(s)

Dev Harinder - Civil Department, National Institute of Technology, Warangal, Telangana, India -

Sabavath Shankar - Civil Department, National Institute of Technology, Warangal, Telangana, India -


Abstract

The performance and service life of the Low-volume roads (LVRs) largely depends on the properties of the subgrade and sub-base soil. The settlement, compressibility and bearing capacity characteristic of the LVRs associate with subgrade soil strength. The low shear strength subgrade soil poses several problems to the pavement service life. Such soil is notice as block cotton (BC) soil. The properties of BC soil are high swelling shrinkage, low bearing capacity and high settlement. The construction of pavement over such soil poses rutting fatigue and reflecting cracks to the pavement. To prevent this problem of pavement many of the conventional technics were adopted and reported their benefits for improving the service life of the pavement. But these techniques are not possible in all the case, than alternate stabilization methods are introduced by using the geosynthetic in pavement form the past few decades. The stabilization of pavement using the geosynthetics has gained universal promises to improve the service life of the pavement form the last four decades. In the present study, focus on the application of coir geotextile mats to improve the bearing capacity, reduce the settlement characteristic and the maintenance cost of LVRs over the weak subgrade soil.


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Keywords:
coir geotextile; subgrade; sub-base; reinforcement; separation; wheel tracking test;


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