The addition of plastic waste in self-compacted concrete: A critical review

This paper intends to review past studies regarding the addition of waste plastic in self-compacted concrete. SCC is one of the ingenuities products in concrete technology. It is also a special type of highly flowable concrete that does not require vibration for placing and compaction. Mixture proportion could be done by adding a different material to SCC mixtures to improve the properties of SCC. Innovative materials are generally used for partial replacement of cement, sand and a combination of two or more items. The use of plastic waste materials in concrete is a common solution for waste disposal and also serves an economic purpose. Different research studies have been conducted on the use of plastic waste as creative material to produce good quality concrete. The result shows that using waste plastic as a fine aggregate improves the workability and reduces the density and the compressive strength of concrete containing between 10% and 20% of waste by 10% to 24 % respectively. In addition, when used as a coarse aggregate, the properties such as compressive as well as tensile strength are reduced, and the thermal conductivity of concrete is reduced, but the best usage of waste plastic was as a fiber because of its high compressive and flexural strength.