Mechanical and hydraulic properties of pervious concrete incorporating waste PET plastic

Abstract

These days, building sustainable infrastructure requires human endurance. In this sense, the idea of combining PET (polyethylene terephthalate) with pervious concrete is an intriguing field of study. On the one hand, by enabling water to percolate through voids and lowering surface runoff, pervious concrete helps to replenish groundwater levels. Conversely, waste PET plastic, which is produced more frequently these days, is recycled in building projects. Consequently, this leads to two main benefits: concrete’s mechanical and hydraulic qualities are changed, and plastic waste is effectively managed. This study looks at using leftover PET plastic fibres in varying amounts to create pervious concrete and assesses the mechanical properties (compressive strength, flexural strength, split. Porosity and permeability were also found to be correlated. Finally, an abrasion resistance test was conducted. Various percentages of PET plastic fibres, specifically 0%, 5%, 10%, 15%, and 20% by volume were used in place of natural coarse aggregates in this investigation while maintaining a constant water-to-cement ratio of 0.34. Compressive strength, flexural strength, and split tensile strength are all decreased when the amount of PET plastic in the concrete mix is increased. This decline in trend was notable for compressive strength at 20% replacement and for flexure strength at 10% replacement. Porosity, permeability, and abrasion resistance all indicated a progressive increase for different replacement percentages at the same time. The results of the experiment revealed that the porous concrete had an aggregate-to-binder ratio of 0.34 and a weight-to-cement ratio of 0.34.