ABSTRACT
This study was intended to examine effect of quarry dust on the engineering properties of lateritic soils. This study was guided by the following objectives; to investigate the natural engineering properties of lateritic soil samples, to study the effort of the lateritic soil on the quarry dust, to determine the feasibility of using quarry dust as latarite soil stabilize and to determine the optimum improvement quantity and proportion needed for improving lateritic soil with quarry dust. The laterite used for this research work will be collected at Osogbo. The sample will be subjected to laboratory tests at the Civil Engineering Department Laboratory Futa, Akura and Osun State Ministry of Works and Transport, Osogbo. The tests will be carried out on both the natural sample and the improved sample and will include: moisture content, specific gravity, grain size distribution, Atterberg’s limits, compaction and California Bearing Ration (CBR) tests both before adding quarry dust and after adding a varying percentage and proportion of quarrying dust. The study findings revealed that clay fraction in the mixture is decreased due to increase in quarry which earlier on was done by the clay fraction at lower percentage of quarry dust on the laterite quarry dust mixtures; based on the findings from the study, it should be noted that granite in the quarry dust adds strength and rigidity to the mixtures the quantity of the quarry dust increases.
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