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Abstract

Archaeology & Anthropology: Open Access

WStabilization of Expansive Soil using Dolochar and Lime

Submission: November 30, 2017; Published: April 17, 2018

DOI: 10.31031/AAOA.2018.01.000521

ISSN: 2577-1949
Volume1 Issue5

Abstract

An experimental investigation is carried out to study the stabilization of local expansive soil by using dolochar and lime. Dolochar is added to the expansive soil from 5% to 30% by weight of total dry soil mixture with an increment of 5%. The geo-technical properties such as consistency, swelling, compaction and strength characteristic like California bearing ratio (CBR) of stabilized soil are studied. From the above study, the optimum dolochar content is found to be 30%. The lime (quick lime) is then added at low percentages i.e., 1% to 5% with an increment of 1% to the optimum soil-dolochar mixture. The mixed samples (soil-dolochar-lime) are soaked for 4, 7, 14, 21, 28 and 56 days to determine the CBR values. From the test results, it is seen that the maximum strength is achieved at the proportion of 70:30:4 for the soil-dolochar-lime mixture samples. The 4 days soaked CBR at 30% dolochar and 4% lime content of the expansive soil is increased by 672% as compared to soil alone. Further, it is observed that the concentrations of heavy metals leached from the stabilized soil with optimum mixture are found to be within the acceptable limits.

Keywords: California bearing ratio; Dolochar; Free swell index; Leachate characteristics; Lime; Stabilization

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