Paper Details

In India, most of the flexible pavements are need to be constructed over weak sub-grade soil having lowmodulus values. This Study examined the basic engineering and geotechnical properties of poor sub-grade soils usinggeosynthetics like Woven Geotextile to improve its strength. CBR tests were carried out by placing the Woven Geotextilein single layer at depths 0.33H, 0.66H and 0.8H (H- height of mould in CBR test) from bottom of mould under soakedcondition to determine the strength of the soil. Flexible pavement was designed for both fatigue and rutting life of100MSA at 90% reliability, when the Woven Geotextile was placed at three different depth in subgrade soil The criticalstrain value for both fatigue and rutting life were analyzed by IITPAVE software and the allowable strain values werecomputed by IRC: 37-2012. The result shows that the strength of subgrade soil was considerably increased byintroducing Woven Geotextile reinforcement in the soil. From this study, single layer of Woven Geotextile introduced atthe depth of 0.8H from the bottom of the mould shows better performance as compared to those when Geotextile wasplaced at other depth of mould. Pavement thickness and Cost for Construction of Pavement reduces when Geotextile wasplaced at different depth of subgrade soil with minimum being when Geotextile placed closer to top of mould.

Rupinderpal Singh, Dr. Pardeep Kumar Gupta, “APPLICATION OF GEOSYNTHETICS IN FLEXIBLE PAVEMENT”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 5, Issue 1, pp. 448-452, January 2018.