Venturing into the exploration of the enduring strength of recycled concrete aggregates (RCA), this study delves into the intricate realm of durability, where sustainable construction meets the test of time. Durability aspects of cement concrete pavements by incorporating 50% RCA, aiming to address environmental concerns is presented. The study focuses on sulfate resistance, chemical durability, moisture transport properties, and fatigue resistance through comprehensive testing methodologies. Literature review indicates that up to 30% RCA has minimal effect on concrete strength, but beyond that, a gradual reduction occurs. Few studies suggest using 50% RCA in durability studies, highlighting the need for comprehensive investigations into durability aspects. Methodology involves initial characterization of RCA, mechanical testing, and subsequent detailed studies on optimal 50% RCA replacement. The findings from this study reveal that 50% RCA replacement demonstrate acceptable compressive strength and viability in sustainable concrete practices, without compromising structural integrity. Sorptivity rates vary with RCA content, indicating differences in water absorption characteristics. Fatigue analysis highlights lower performance with 100% RCA replacement, emphasizing the need for balanced considerations in utilizing recycled materials in concrete formulations. Recommendations include further exploration of RCA use in concrete, reassessment of blending thresholds, and development of novel mix design methodologies for sustainable construction practices. Future research should focus on optimizing mix quality, conducting additional fatigue tests, and enhancing the practical applicability of RCA in construction for effective material usage and long-term sustainability. This study contributes to the ongoing discourse on sustainable construction practices by providing insights into the performance of RCA-based cement concrete pavements.