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PROJECT TOPIC: COMPARATIVE STUDIES OF RICE HUSK ASH AND COW BONE ASH AS PARTIAL REPLACEMENT OF CEMENT IN CONCRETE

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It is seen that the rising of construction materials in developing countries has necessitated research into the use of alternative materials civil engineering construction. In this study, a concrete mix of 1:2:4 was used as control, while cow bone ash and rice husk ash were used to replaced cement in concrete by weight. 57 cubes were produced the workability and compressive strength were evaluating at 7days, 14days and 28days. The compressive strength of concrete decrease as the percentage of replacement increased. Concrete produced by 0%, 5%, 15% and 20% replacement attained for 28days are as follow: 26.43N/mm2, 25.50N/mm2, 20.70 N/mm2, 19.29 N/mm2, 13.24 N/mm2 for RHA and 26.43N/mm2, 25.61N/mm2, 21.60N/mm2 20.67N/mm2, 14.05N/mm2 for CBA. Corresponding to the compressive strength of the control value. The result of the study showed that concrete produced by replacing it by 5% and 10% of RHS and CBA can be used concrete, reinforcement concrete construction. The use of RHA and CBA as partial replacement of cement in concrete should be encouraged as an environmental protection and reduced cost of measurement.


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