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Comparative Studies Of Rice Husk Ash And Cow Bone Ash Mixed As Partial Replacement Of Cement In Concrete
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The mixture of Rice Husk Ash (RHA) and Bone Ash (BA) were used as partial replacement for cement in concrete production. The percentage composition of (SiO2 + Al2O3 + Fe2O3) of Rice Husk Ash and Bone Ash present is greater than 70% which makes the mixture suitable to be used as a pozzolana. In this paper, the replacement of cement by RHA and BA varied from 2% to 10% in a mix ratio of 1:2:4.
Cubes cast comprise the control and specimen samples with various tests considered, and the results showed that workability were consistent within the described values for lightweight concrete. The maximum compressive strength was obtained to be 17.45N/mm2 at 28 days for control (0%) while maximum value was obtained to be 13.78 N/mm2 with 2% replacement of cement with rice husk ash and bone ash at 28 days curing with the mixed ash content. The value was found to be within the range acceptable for concrete; particularly light weight (lean mix) concrete. Substitution of the mixture should not be more than 10% for the best result in the concrete production for structures.
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ABSRACT -- [Total Page(s) 1]
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