Waste plastic in concrete: Review andstate of the art

The rapid increase of global plastic waste has been of serious concern for environmental scientists, and it has been a motivating factor for many researchers toward new innovations regarding its recycling and management. The construction industry being one of the largest consumers of natural resources and biggest waste generating industry, and hence it could be the biggest player in utilizing plastic waste into the production of concrete to attenuate this menace. This review investigates the mechanical properties of concrete incorporating different types of waste plastics and their potential application in rigid pavements. The principal objective of the paper is to review and investigate the influence of Polyethylene Terephthalate (PET), High-Density Polyethylene (HDPE), Low-Density Polyethylene (LDPE), Polyvinyl Chloride (PVC), and Polypropylene (PP) as partial replacements of fine aggregates in concrete mixes developed for rigid pavement applications. To evaluate the workability of concrete introduced with waste plastic as a viable partial replacement to fine aggregates and to contribute a sustainable solution to the environment. This paper reviews the current state of research concerning waste plastics in concrete. The review noted variation in the specific outcomes of concrete with plastic waste properties regarding it’s the various related mechanical properties. It also pointed to a gap in the line of research regarding issues related to long-term performance and environmental impacts on waste plastic in concrete applications