Influence of Partial Replacement of Cement with Waste Materials on Mechanical Properties of Concrete
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Abstract
Cement serves a crucial function as a fundamental ingredient in concrete manufacturing. However, over-reliance on cement contributes to adverse environmental consequences. Utilizing locally available waste materials as substitutes for cement holds considerable promise in mitigating environmental impact, particularly within the construction sector, thereby promoting cleaner production practices. The objective of this research is to investigate the effectiveness of replacing cement with coconut fiber ash and glass powder in enhancing specimens performance. Concrete specimens were manufactured using various dosages (i.e., 0, 10, 20, 30, 40, 50, 60, 70, and 80%) of coconut fibre ash and 0, 10, 20 and 30% of glass powder. To evaluate the performance of these concrete specimens, a series of tests including compressive strength, split tensile strength, and flexural strength were conducted across various combinations of coconut fiber ash and glass powder percentages. The concrete specimens underwent testing at intervals of 7, 14, and 28 days to assess their properties. Partial substitution of waste materials is used in concrete along with cement is conducted with the goal of attaining desired concrete properties such as strength, durability, and workability. The results of all tests revealed that, maximum strength were achieved at 20% of coconut fibre ash and 10% of glass powder.