JETI Admin2
Abstract
This project is aimed to determine the impact of Palm kernel shell (PKS) and stone dust waste (SDP) as a local material in improving poor soil, in order to reduce the cost of expensive materials in road construction and to help to provide good strength for the sub grade and sub base material. Sieve Analysis, Atterberg Limit, Moisture Content, Specific Gravity, Compaction and California Bearing Ratio (CBR) were conducted on natural and stabilized soil mixture. The natural soil (A-7-6) was blended with stone dust waste (SDP) and palm kernel shell (PKS) at varying proportion of 2%, 4%, 6%, 8%, and 10% by dry weight of soil respectively. Inclusion of additives increase the Maximum Dry Density (MDD) at 6 and 8% while it predominantly decreases the Optimum Moisture Content (OMC) values of the stabilized soil mixture. The plasticity index of samples decreased from 2 % to 8 % which indicates that the additives of SDP and PKS improves the engineering characteristics of deficient soil and reduces its plasticity index at 8 %. The trend of variation of CBR with an increase in percentage of SDP and PKS showed a decrease in CBR from 0 to 2 %, after which the values increased at 4 to 8% and reduced at 10 % of SDP and PKS. Soil blended with 8% SDP and PKS offered the best result with increase in MDD (1.920 g/cm3) and CBR (34 %). The potential of these additives improves soil properties and reduces construction cost of road as a cheap stabilizing agent for lateritic soil for sub-grade purposes.
References
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