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Scientia Africana

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Partial replacement of coarse aggregate with crushed ceramic tiles in concrete

A.W. Otunyo, J.O. Ofem

Abstract


This paper investigated and reported the improvement of concrete properties by partial replacement of coarse aggregate with crushed waste ceramic tiles (CWCT). Compressive strength tests were conducted using 150x150x1250mm cube specimens. CWCT were used to replace coarse aggregate at 0%, 30%, 40% and 70% replacement levels in the concrete. Compressive strengths at 7, 14 and 28 days curing age was determined at all levels of replacement of coarse aggregate with CWCT. The compressive strength at 7, 14 and 28 days increased as the content of the CWCT was increased between 0%- 30%. At 40% waste ceramic tiles content, the values start to decrease. The optimum replacement value of crushed waste ceramic tile is 30%.

Keywords: crushed waste ceramic tiles, coarse aggregate, compressive strength, concrete




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