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Determination of the Compressive Strength of Concrete from Binary Cement and Ternary Aggregates

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Document pages: 18 pages

Abstract: One ofthe most active fields of research embraced by many disciplines, includingcivil engineering, is material reuse. It is known that ceramics wastes fromvarious construction and demolition sites and manufacturing processes aredumped away into the environment, resulting in the pollution that threatensboth agriculture and public health. Therefore, the utilization of ceramic wastein construction industries would help to protect the environment from suchpollutions. This paper presents the results of an experimental analysis of theeffects of partial replacement of coarse aggregates, fine aggregates, andordinary Portland cement with the ceramic waste, at percentage levels of 0 , 5 ,10 , and 20 ; and the assessment of the strength property of the concreteproduced with optimum combination of the constituents. Compressive strengths ofthis concrete were determined at 7, 28, and 56 days of curing using 150 × 150 × 150 mm cube specimens. Test results showed that the compressive strengthof the concrete decreased as the content of ceramic waste present in theconcrete increased. Thus, concrete produced from the partial replacement ofordinary Portland cement with ground ceramics gave compressive strengths of16.6 N mm2 and 13.4 N mm2 at 5 and 20 replacementlevels respectively. Similarly, the compressive strengths of concrete from thepartial replacement of sand with fine ceramics were 13.8 N mm2 and10.9 N mm2 for 5 and 20 replacements respectively. For 5 and 20 replacement levels of granite with crushed ceramics in concrete gave acompressive strength of 11.6 N mm2 and 9.7 N mm2,respectively. For concrete derived from the partial replacement of stone dustwith fine ceramics, the compressive strengths were 19.6 N mm2 and18.10 N mm2 respectively for 5 and 20 . For concrete produced fromthe partial replacement of bush gravel with crushed ceramics, the compressivestrengths obtained were 10.9 N mm2 and 8.98 N mm2 respectively for 5 and 20 replacements. Finally, the concrete derived fromthe optimal combination of binary cement, ternary fine, and coarse aggregatehad a compressive strength of 22.20 N mm2 which is higher than thecompressive strength of the control mixture at 18.10 N mm2. Theresult of the ANOVA carried out showed that the compressive strength obtainedfor each partial replacement of different components is statisticallysignificant at 5 , i.e. the change inthe compressive strength of the concrete produced is due to the presence ofceramic waste.

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