Abstract
This paper presents the study of potential of bagasse ash with quarry dust to stabilize the clay soil. The evaluation involves the determination of the geotechnical properties of clay (CL&CI) soil in its natural state and also when mixed with various proportions of bagasse ash with quarry dust. The parameters tested include the specific gravity, particle size distribution, Atterberg’s limits, compaction characteristics, California bearing ratio (CBR) and the unconfined compressive strength (UCS). The strength test was repeated after curing period 0 day, 7days, 14days, and 28days of the treated samples. Results reveal that by addition of bagasse ash the geotechnical parameters of clay are improved as free swell index reduced by 89% for CL type soil and 60% for CI type soil. UCS increased by 56% and 11% for CL and CI type soil respectively. On addition of bagasse ash with quarry dust, soaked CBR increased 87%. Result also shows that curing improves strength of bagasse ash treated clay. These results imply that bagasse ash can be effectively used as an admixture to stabilize the clay soil as an alternative for soil sub grade in pavement of highway.
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