Utilization of Crushed Ceramic Waste Tiles as a Partial Replacement of Coarse Aggregate in Cement Concrete Making
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Date
2023-02
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Addis Ababa University
Abstract
The main goal of sustainable construction can be greatly advanced by using waste materials in the production of concrete. Ceramic materials are being used more frequently in new projects as electrical insulators, sanitary fitting, and tiles, among other things. However, ceramic materials produce a significant amount of waste during production, transportation, and installation due to their fragility. As a result, this research outlines an experimental investigation of utilization of crushed ceramic waste tiles in cement concrete making by substituting the coarse aggregate. Before undergoing the ceramic wastes through the fundamental physical tests, they were manually crushed with a Ball-peen hammer and sieved.
As part of the research, concrete-making materials (coarse aggregate, fine aggregate and crushed ceramic tiles) were tested in the material laboratories. Concrete mix designs for the C-20 and C-25 grades of concrete were produced using the ACI 211.1 mix design procedure. Each concrete grade’s natural coarse aggregate was replaced with crushed waste ceramic tiles at weights of 10%, 20%, and 30%.To compare test results with those obtained by partial substitution. A control mix of 0% crushed and sieved ceramic tiles was made. For the C-20 and C-25 classes of concrete, a total of eight concrete mixes including the control samples were produced.
Each grade of fresh concrete was subjected to a slump test and fresh concrete density. Compressive strength, conducted on the seventh, fourteenth and twenty-eighth day, whereas the flexural strength, and splitting tensile strength tests were done on the twenty- eighth day.
The results of the partial replacement of ceramic waste tiles tests were obtained to be marginally higher than those obtained by the control mix. After examining the results, it was established that the percentage of residual ceramic tiles to incorporate into the concrete mix that results the highest strength is 20% for C20 and C25 concrete classes. The overall findings of the results showed that incorporating waste ceramic tiles partially as coarse aggregate improved the compressive strength, split tensile strength and flexural strength.
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sustainable, ceramic wastes, slump, compressive strength, split tensile strength, Flexural strength