Enhancing material performance using rice husk ash using comparative method

Abstract

This experimental study aimed to compare two types of concrete: one with rice husk ash (RHA) added and one without. The results indicated that the addition of RHA had minimal impact on the concrete's performance based on the tests conducted. In terms of density, the result shows that the concrete without RHA was 3387 kg/m³, while the concrete with RHA had a density of 3385 kg/m³. The difference was statistically insignificant (t-stat = 1.56, P > 0.05). For compressive strength the concrete without RHA was 20.96 MPa, and for the RHA-added sample, it was 21.02 MPa and result was statistically insignificant (t-stat = 1.24, P > 0.05). For Flexural Strength, the average flexural strength for the concrete without RHA was 8.39 MPa, while the sample with RHA had a value of 8.61 MPa and result was statistically insignificant (t-stat = 1.53, P > 0.05). In conclusion, the results suggest that the addition of rice husk ash to concrete does not lead to significant differences in most of the performance characteristics tested.

Keywords: Experiment, Compressive Strength, Flexural Test.