Abstract

In order to explore the application of metakaolin and lime as substitute materials for lateritic soil stabilization, this study investigates the geotechnical characteristics of lateritic soil stabilized with metakaolin and lime. Liquid Limit (LL), Plasticity Index (PI), Maximum Dry Density (MDD), Optimum Moisture Content (OMC), Particle Size and Specific Gravity were the geotechnical properties taken into consideration. In order to assess these qualities, a lateritic soil sample was combined with metakaolin and lime in amounts of 2, 4, and 6% by soil weight. The mixture was then homogeneously mixed and put through laboratory tests for specific gravity, compaction, particle size distribution, and Atterberg limits. LL, PI, MDD, OMC, fines, sand, and gravel were found to range in levels from 26 to 32%, 2 to 16%, 1850 to 1982 kg/m 3 , 9.92 to 12.10%, 0.10 to 2,84%, 14.18 to 15.30%, 82.98 to 84.60%, and 2.00 to 2.60, respectively, according to the results. The percentages of specific gravity and fine particles increased along with the admixture content (lime + metakaolin), while all other parameters decreased. The soil sample that was taken before treatment is suitable as subgrade material, while after treatment, it becomes suitable as base and subbase courses materials. This study demonstrated that lateritic soil could be stabilized by using metakaolin and lime. It indicated that the ideal admixture quantity to be utilized was 6% lime + 6% metakaolin. However, further research is required in other to find out how to raise the MDD of lateritic soil while increasing the admixture