Influence of Natural Fibres in Strengthening of Black Cotton Soil

Abstract

The expansive soil like black cotton soil spread over southern Indian terrain. As a fast-growing nation like India, the need for infrastructure activities quickly takes place. For better structural capacity the geotechnical features are important. The soil stabilization is a technique in the part of improving the soil engineering properties like California Bearing Ratio (CBR), shear strength and compaction factors. In the present study, the black cotton soil stabilized with fibres to improve the engineering properties of soil. The study carried with natural fibres like sisal, banana and jute fibres. The ratio of 0.2%, 0.4% and 0.6% added in the dry weight of soil fraction with the soil for the strength gaining. The addition fibres increase the strength in the reasonable value for CBR up to 21.55% in 0.4% of banana, 0.6% of sisal and 0.6% of jute fibre combination. Optimum Moisture Content (OMC) increased up to 20% for the same combination. The results provide the combined scattered fibre effect to increase the strength parameters of soil.