The construction industry is facing significant environmental challenges, including the high carbon footprint of cementproduction and the escalating problem of plastic waste management. This study investigates the potential of partially replacingcement with plastic residue generated through pyrolysis of plastic waste. The source project evaluates a 0.5% cement-replacementlevel in concrete and reports material characterization, workability, compressive strength, split tensile strength, and durability-relatedobservations. The project concludes that partial replacement has a negligible impact on compressive strength while improvingworkability and durability. The present manuscript reorganizes the project into a concise IEEE-style research paper while preservingthe reported numerical results and experimental terminology. Where original tables are blank, the available graphical results areexplicitly treated as graphical observations rather than reconstructed exact measurements.Index Terms: plastic residue, cement replacement, M20 concrete, workability, compressive strength, split tensile strength,sustainability, waste management