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ABSTRACT
The effects on the recirculation of plastic waste on the compressive strength of concrete has been studied through time by various Researchers, because plastic waste has been found to have interesting properties and characteristics that can help the Construction Industry. Plastic has been used in many ways in modern life both in industry products as well as in domestic use. The waste generated by using plastic poses an enormous threat to the environment due to its non-degradable nature for a very long time. There has been a lot of effort to minimise plastic waste generation and reuse it. However, the plastic waste generation has increased considerably in the past decade. This work presents a potential use of plastic waste as fine aggregate in concrete. Experimental investigations were carried out to determine the strength characteristics of concrete by replacing fine aggregate with 0%, 5%, 10%, 15% and 20% of processed plastic waste, in a grade M25 concrete, cured at 7, 14, 21 and 28 days. Tests were conducted on concrete specimens under compressive loading conditions to understand its behaviour. Although there was a notable reduction in strength characteristics of the concrete specimens, the optimum strength was obtained at 15% sand replacement. The concrete mix prepared using plastic waste can be used for mass concreting and low load-bearing structures such as flooring, sidewalks, and paving blocks. Different tests were carried out on the physical properties of the materials used and the concrete produced. These tests include sieve analysis of both fine aggregate (sand and plastic waste), specific gravity test of sand, granite, cement and plastic waste. A compression strength test was also carried out for the cubes. The results obtained from this experiment are well tabulated and charts/graphs are provided to show the relationships between these results.
