Affiliation:
1. Department of Civil Engineering , Jimma Institute of Technology , Jimma University , Jimma , Ethiopia .
Abstract
Abstract
This study was to evaluate the engineering properties of cement stabilized expansive clay soils. This study considered an experimental program to determine Atterberg limits, free swell index, compaction characteristics, California Bearing Ratio (CBR), and swell of the mixtures. The collected expansive soils were stabilized using 10, 12, 14, and 16 % of cement by weight. The laboratory results showed that the soils have low shear strength and high swelling potential, which indicates the soils are weak for subgrade without improvement. The improvement of some of the engineering properties of expansive soil stabilized by 14 % cement was 15 % for liquid limit, 23 % for plastic limit, 73 % for plasticity index, 9 % for optimum moisture content, 6 % for maximum dry density, 55 % for the free swell index, 1332 % for California Bearing Ratio, and 88 % for swell. The analysis results indicated that 14 % cement stabilization is very effective for the improvement of expansive soil strength.
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