Abstract:
Reduction of natural resources is occurring worldwide due to increase of urbanization and industrialization rapidly. In view of this, people have started searching for suitable other feasible alternative materials for concrete so that the existing natural resources could be preserved to the possible extent, for the future generation. As Bangladesh is a developing country, we have to consider the resources that we can get low of cost. The study reports on behaviour of partially replacement of coarse aggregate with broken tiles for concrete production. After doing the Mix Design for concrete, we get the value of material ratio as cement, fine aggregate and coarse aggregate C:FA:CA is 1:2.6:3.8 batched by volume with water – cement ratio of 0.45 were used. The percentage replacement varied from 0% to 50% at intervals of 10%. The slump test has used to assess the workability of the fresh concrete. The compressive strengths and densities of cured concrete cylinder of sizes 8inch x 4inch.This study aims in achieving an acceptable ordinary strength concrete with ceramic waste as substitute of conventional coarse aggregates. The ceramic waste to be adopted is broken tiles from construction site. Ceramic waste concrete has been made with these tiles at 0%, 10%, 20%, 30%, 40%, 50%. A water cement ratio of 0.45 has been maintained for the concrete mixes. The characteristics properties of concrete such as workability for fresh concrete, also compressive strength will be found out in this study at 7, 14, 21 and 28 days for each percentage of replacement. Increase in the percentage replacement of concrete with broken tiles lowered workability and compressive strength. Compressive strength tests showed that upto 30% of the broken tiles in replacement for coarse aggregate is quite satisfactory with no compromise in compressive strength requirement. To decrease the pollution and reuse the material, the present study is carried out. Thus, broken waste ceramic is an excellent substituent of coarse aggregate as it is cheaper than coarse aggregate.
Authors: Islam T.
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