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AUTHOR(S): Danial Ranjbarian, Seyedehzahra Mirrahimi
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ABSTRACT This research examines composite materials made from recycled concrete and recycled bricks, comparing their thermal, mechanical, and environmental performance for use in sustainable buildings. The construction industry is currently under pressure due to high embodied carbon, intensive resource consumption, and increasing energy use. Recycling-based materials are a promising response to these issues, but their behavior under simultaneous thermal and mechanical loads is still not fully clarified. To tackle this gap, the study synthesizes results from recent experimental work and numerical simulations. It evaluates how factors such as mix design, use of supplementary materials, and surface treatments affect overall performance. Additives like Phase Change Materials, fly ash, and geopolymer binders are examined as strategies to improve durability and efficiency. The results show that recycled concrete can cut thermal conductivity by up to 76%, stabilize compressive strength by around 20–25%, and reduce Carbon dioxide emissions by about 30–60%. Recycled brick-based composites demonstrate 22–38% lower thermal conductivity, 15–28% higher strength, and 25–40% reductions in embodied carbon. Overall, the findings indicate that carefully optimized combinations of recycled concrete and brick materials can substantially enhance energy efficiency and environmental sustainability in contemporary building design. |
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KEYWORDS Recycled concrete, Recycled brick, Thermal conductivity, PCM, Sustainability |
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Cite this paper Danial Ranjbarian, Seyedehzahra Mirrahimi. (2025) Comparative Assessment of Recycled Concrete and Brick-Based Composites for Thermal, Mechanical, and Environmental Performance in Sustainable Construction. International Journal of Environmental Science, 10, 178-183 |
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