Experimental study on use of E-waste plastics as coarse aggregate in concrete with manufactured sand

Abstract

Abstract E-waste is the fastest growing waste with an annual growth of 3–4% in the world and it is estimated that this will be increasing approximately to 55 million tonnes per annum by 2025. It comprises of different materials and chemicals such as lead, cadmium, mercury, beryllium, and plastics including polychlorinated biphenyls, poly vinyl chloride, and polystyrene, many of which are toxic and are likely to create serious problems for the environment and human health if not handled properly. One of the most important constituents of e-waste is plastics which accounts for 20%. India, with a population of over 1 billion, is a rapidly growing economy and showing increased rate in electronic appliances consumption and reuse of e-waste plastics not only helps in getting them utilized in concrete and other construction materials, it helps in reducing the cost of concrete manufacturing but mainly protecting the environment from possible pollution effects. Efforts have been made in the concrete industry to use e-waste plastics as a partial replacement of the coarse or fine aggregates. The present study is focused on replacing conventional coarse aggregate ranging from 0 to 12.5% with e-waste plastic for M 20 grade concrete using manufacturing sand. It has been found that the compressive strength of concrete replacing e-waste is high compared to conventional concrete with 10% of replacement, flexural strength is high compared to conventional concrete with 10% of replacement and the split tensile test is high compared to conventional concrete with 12.5% replacement.