Durability properties of concrete made with polyethylene terepthalate and polypropylene as replacement of fine aggregate

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Polyethylene Terephthalate (PET) and Polypropylene (PP) is mostly used materials for making items like water bottles, food containers and many other plastic products in all fields of life. Due to the scarcity of natural aggregates for making concrete, it is required to go for alternative material, this type of plastic is one of the materials for replacement of fine aggregate in concrete. An objective of this paper is to study the feasibility of this recycled PET and PP plastic waste to be used as a building material in manufacturing of concrete which is replaced in fine aggregate. Polyethylene Terephthalate and Polypropylene is used in various percentages like 5%, 10%, 15% and also various tests like workability and compressive strength, Sorptivity, water absorption, acid attack and sulphate attack tests are conducted. From the results the PP shows good workability but low compressive strength than PET. From the durability point of view, the concrete made with PET and PP have given better results compared to conventional concrete of M30 grade. In PET and PP concrete, PET resists the acid, sulphate and water over the long period much better than the PP. So, PET can be replaced up to 10% in fine aggregate, whereas PP is allowed up to 5% replacement of fine aggregate.