Volume 7, Issue 1

Stabilization of Soil Subgrade Using Natural Geosynthetics for Flexible Pavements.

Author

Naveen Kumar A. B*

Abstract

Abstract:

The quality of a pavement depends on the strength of its sub-grade, improving the quality of natural weak subgrade to enhance its strength and load bearing capacity is essential. If the natural soil is very soft it needs some improvement to act as a sub-grade. It is therefore, needed to replace the natural soil by stabilization with improved strength and compressibility characteristics. The Experimental works have been carried out with natural geosynthetics material like Jute Fiber individually mixed with soil and also in combination with different percentage of Hydrated Lime with several mix proportions to study improvement of weak road subgrade. 1, 2, 3 and 4 percentages of Jute Fiber were mixed with soil and stabilized with 1, 2, 3 and 4 percentage of lime is tested for California Bearing Ratio (CBR). The study reveals that the CBR value increases with the increase in Jute Fiber and Lime reaches to a desirable CBR value for subgrade of pavement. Normally soaked CBR value is considered for pavement design. Experimentally it is found that the addition of Jute Fiber with Lime in the soil results in the improvement of soaked CBR value from 2.23 % to 8.10 %. The maximum CBR is obtained while using 3% Jute Fiber and 3% Lime with the natural soil.

DOI

https://doi.org/10.62226/ijarst20180126

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