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State-of-the-art Review: Concrete Made of Recycled Waste Pet As Fine Aggregate

It is well known that the foremost environmental sustainability concern derives from the abundance of the plastic waste. The growing problem of the plastic waste originates from the presence of Polyethylene terephthalate (PET) from plastic bottles. Nevertheless, the versatile performance of PET in terms of its lightweight, strong, flexible, moisture-resistant, and cheap can make it a replacement substance for aggregates in green concrete. On the other hand, PET replacement has mostly been restricted to non-structural uses, generally due to its lower strength/stiffness, larger creep and shrinkage, poorer durability associated to natural aggregate concrete (NAC). This paper presents a comprehensive review of the published studies on waste recycled plastic by means of fine aggregate replacements. Parameters including fresh concrete properties (workability and density) and the hardened concrete properties (compressive strength and splitting strength) have been considered. After a detailed review it was found that most of the studies conducted in the area of using PET as a fine replacement outlined the adherence between concrete and PET.