@article{Ugwu_Egwuagu_2022, title={COMPRESSIVE STRENGTH OF CONCRETE MADE WITH MASHED PERIWINKLE SHELL AS FINE AGGREGATE FOR DISASTER MITIGATION}, volume={6}, url={https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1082}, DOI={10.33003/fjs-2022-0605-1082}, abstractNote={<p>This study presents the suitability of mashed periwinkle shell (MPS) as fine aggregate on concrete compressive strength for disaster mitigation. The effect of mashed periwinkle shell (MPS) at 0%, 10%, 20%, 50% and 100% replacement as fine aggregate was investigated for its concrete compressive strength. Laboratory and non-linear regression mathematical model methods were adopted in this study. Preliminary tests like sieve analysis, specific gravity etc. were performed on the aggregate materials from which a mix ratio of 1:2:4 was obtained. A total of 60 concrete cubes of 150 mm x 150 mm x 150 mm sizes were cast, properly cured and checked for the 7, 14, 21, 28 days compressive strength. The results obtained showed optimum improvement on concrete compressive strength at 10% and 20% MPS replacement as fine aggregate for both the experimental and model methods. The 100% MPS replacement gave a poor strength gain showing that MPS full replacement as sand in concrete might cause failure of the structure. The mathematical model gave a better representation of the concrete strength and the accuracy of the model determined from results of the coefficient of determination gotten as; 0.980, 0.97, 0.986 and 0.989 respectively. Hence this study tends to mitigate against using sub-standard materials in construction and also solves environmental problems that might arise from dumping periwinkle shells.</p>}, number={5}, journal={FUDMA JOURNAL OF SCIENCES}, author={UgwuJuliet N. and EgwuaguOnyekachi}, year={2022}, month={Nov.}, pages={1 - 7} }