Incorporating Recycled PVC and Construction Debris as Sustainable Components in Concrete Mix Design
摘要
The construction industry is a major contributor to environmental degradation due to its extensive consumption of natural resources and generation of waste. In response to these challenges, this study investigates the incorporation of recycled polyvinyl chloride (PVC) and construction debris as sustainable alternatives in concrete mix design. Recycled PVC was processed into granular form, while construction debris was cleaned and crushed to suitable sizes for use in concrete at varying proportions. The research evaluated key performance indicators such as compressive strength, tensile strength, modulus of elasticity, water absorption, and resistance to chemical degradation. To enhance bonding between the recycled components and the cement matrix, admixtures and surface treatments were applied. The results indicate that the use of recycled PVC and debris is feasible for non-structural and selected structural applications when the mix design is properly optimized. Although some reductions in mechanical performance were observed, these were compensated through the use of supplementary cementitious materials and adjustments in mix composition. Furthermore, the environmental assessment revealed notable reductions in carbon emissions and raw material extraction, supporting the goals of sustainable construction. This study highlights the potential of recycled PVC and construction debris in promoting circular economy practices and lays a foundation for future research aimed at improving the performance and applicability of waste-based concrete in sustainable building projects.