Investigation of the strength and deformation characteristics of concrete with recycled polyethylene terephthalate (pet) granules

The quality of concrete, viewed through the prism of its durability, physical and mechanical properties, is of key importance to the construction sector. At the same time, the financial and environmental costs associated with its production have sparked increasing interest in sustainable solutions. The use of waste polyethylene terephthalate (PET), primarily from recycled plastic bottles in the form of granules as a replacement for fine aggregate in concrete, offers a number of advantages. It contributes to the reduction of landfill waste and associated environmental pollution, decreases dependence on natural resources such as sand and gravel, and in certain cases, enhances the mechanical properties of the final product. This study investigates the properties of concrete incorporating recycled PET granules as a partial replacement for fine aggregate, as well as the influence of the water-to-cement (w/c) ratio. Through a two-factor experimental design, key characteristics such as density, compressive strength, elastic modulus, splitting tensile strength, and flexural strength are evaluated.