CONSOLIDATION AND REBOUND CHARACTERISTICS OF EXPANSIVE SOIL BY USING LIME AND BAGASSE ASH

A.T.Manikandan, M.Moganraj

Abstract: In this paper, the test results such as index properties, proctor compaction, unconfined compression strength, cationic exchange capacity obtained on expansive clays mixed at different proportions of Bagasse ash (2%,4%,6%) and hydrated lime (1%,2%,3%) are mixed into 9 mixes, which were presented and discussed along with the consolidation behaviour of the soil. From the results, it is observed that at optimum mixes 3L+6B, 3L+2B, 2L+2B, 3L+4B, the swelling of expansive clay is almost controlled and also noticed that there is a marked improvement in the strength of soil and change of molecular structure. The combination of Bagasse ash and hydrated lime is more effective than the addition of Bagasse ash alone to the expansive soil in controlling the consolidation characteristics. All the test results with clear reasons for increment / decrement in values are explained in this paper.

Keywords: Bagasse Ash, Lime, Index Properties, Strength, Consolidation Behaviour, Molecular Structure

DOI: https://doi.org/10.15623/ijret.2014.0304073