Impact of Recycled Aggregate Proportion on the Mechanical Properties and Durability of Concrete for Sustainable Construction

Abstract

This research investigates the impact of recycled aggregate (RA) proportion on the mechanical properties and durability of concrete for sustainable construction. The construction industry faces environmental challenges due to the extensive use of natural aggregates, leading to resource depletion and increased carbon emissions. The aim of this study is to evaluate the potential of using recycled aggregates as a substitute for natural aggregates in concrete production, focusing on its effects on compressive strength, tensile strength, and durability. A literature review was conducted, analyzing data from relevant scientific journals, books, and technical reports on recycled aggregate concrete (RAC). The findings suggest that while the use of recycled aggregates generally results in a reduction in compressive strength and durability, these effects can be mitigated through proper mix design, the use of supplementary cementitious materials, and improved processing of the recycled aggregates. The study concludes that with proper quality control and mix adjustments, RAC can serve as a sustainable alternative to conventional concrete, particularly in non-structural applications, and contribute to reducing the environmental impact of the construction industry. Further research is needed to refine guidelines for recycled aggregate use and enhance the performance of RAC in diverse construction applications.