Innovative Sustainable Concrete: Fresh and Hardened Properties Incorporating Plastic Waste

Plastic waste generation has become a global environmental crisis that requires immediate, innovative, and sustainable solutioning. Concrete, being one of the most consumed construction materials, may provide a viable route for recycling plastic waste in accordance with the principles of the circular economy. However, the incorporation of plastic into concrete is a big challenge due to its hydrophobic nature and poor interfacial adhesion, which can compromise mechanical properties. This study was investigate the effects of the inclusion of plastic waste on some mechanical and durability properties of concrete. The review has pointed out some critical gaps in the existing literature, such as the lack of comprehensive studies focusing on the optimization of plastic content without compromising structural integrity. A systematic experimental approach was followed wherein plastic waste in various forms, for instance, PET, PP, was used at variable percentage incorporation, and the concrete derived was tested for compressive strength, tensile strength, flexural strength, and durability parameters. The results indicate that while the plastic incorporation increases the ductility and decreases the density of concrete, there is a loss in strength parameters. The novelty of this study is to propose strategies to overcome these drawbacks by surface treatment of plastic particles and optimal mix design. This research underlines the potential of plastic-reinforced concrete as an environmentally sustainable material, offering a dual solution for waste management and resource conservation.