Paper Contents
Abstract
Concrete is the most widely used construction material in the world, forming the backbone of modern infrastructure. Its primary ingredientscement, water, fine and coarse aggregatesare consumed in enormous quantities, placing increasing pressure on natural resources. Among these, coarse aggregates make up a significant portion by volume, and their continuous extraction from natural sources such as riverbeds and quarries has raised serious environmental and ecological concerns, including resource depletion, landscape disruption, and increased carbon emissions. This study investigates the effects of recycled coarse aggregate (RCA) as a partial replacement for natural aggregates in M60 grade concrete. The research focuses on the workability, mechanical strength, and durability performance of concrete incorporating varying RCA percentages. It was observed that the slump value decreased with increasing RCA content due to the rougher texture and higher water absorption capacity of recycled aggregates. However, the use of superplasticizers effectively maintained workability even with up to 30% RCA replacement.
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Copyright © 2025 SAHIL. This is an open access article distributed under the Creative Commons Attribution License.
