SUSTAINABLE INFRASTRUCTURE DEVELOPMENT USING RECYCLED CONSTRUCTION MATERIALS

Abstract

The transition toward sustainable infrastructure demands transformative approaches that minimize environmental impact while maintaining structural integrity and economic efficiency. This study presents an integrated evaluation of recycled construction materials as high-performance substitutes for conventional resources in modern infrastructure systems. Focusing on recycled concrete aggregates, reclaimed asphalt pavement, and industrial by-products, the research develops a multi-criteria framework combining mechanical characterization, durability assessment, life cycle analysis, and cost–benefit evaluation. The results reveal that optimized recycled material blends not only achieve equivalent or enhanced mechanical properties but also reduce embodied carbon emissions by up to 35%, alongside substantial reductions in landfill burden and virgin resource extraction. Advanced processing techniques, including material pre-treatment and grading optimization, are shown to significantly improve consistency and long-term performance. Furthermore, the incorporation of circular economy principles demonstrates enhanced sustainability indices across infrastructure life cycles. The study provides a robust scientific foundation for scaling the adoption of recycled materials, offering strategic insights for engineers, policymakers, and industry stakeholders to accelerate the development of resilient, eco-efficient, and future-ready infrastructure systems globally.