Performance Evaluation Of Recycled Concrete Aggregate In Pavement

Abstract

The growing volume of construction and demolition waste poses a significant challenge in terms of environmental sustainability and resource management. This study investigates the feasibility of using recycled concrete aggregates (RCA) as a partial or full replacement for natural aggregates in concrete pavement applications. A series of laboratory tests—including workability, impact resistance, and compressive strength evaluations—were conducted to assess the physical and mechanical properties of RCA. The concrete mixes were designed according to IS standards with various replacement levels. Results showed that while RCA exhibited lower density and higher porosity compared to natural aggregates, the mix achieved satisfactory compressive strength, especially with adjusted water-cement ratios. The study highlights the viability of RCA in structural concrete applications and underscores the need for updated construction standards to facilitate its wider adoption.