Utilization of Concrete Road Debris as a Coarse Aggregate for Concrete Mix Used in Construction

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Concrete, a widely used building material, faces challenges due to high demand, strain on resources, and environmental impact. As a result, the construction sector is shifting towards renewable resources and creative use of recycled materials. Construction and demolition waste, including concrete, wood, asphalt, and metals, contributes significantly to waste production. Using construction and demolition waste as aggregate in concrete production could be a potential solution to mitigate environmental impact and resource scarcity. This research aimed to provide an alternative approach for construction by experimenting with recycled coarse aggregates from concrete road pieces to determine high-performing mix proportion for concrete. The goal was to create a durable and cost-effective structure with comparable compressive strength, flexural strength, and water absorption to natural concrete. The study conducted tests on concrete cylinders and beams with different percentages (50%, 75%, and 100%) of recycled concrete road debris as coarse aggregate. The results demonstrated that mixtures with 50% and 75% of concrete road debris exhibited comparable strength and durability to conventional concrete. However, a mix with 100% concrete road debris showed a significant decrease in performance and was not recommended. This research underscored the possibility of utilizing recycled concrete road debris as a partial replacement for natural aggregates.

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139-144

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July 2026

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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