Environmental impact assessment of red mud utilization in concrete production: a life cycle assessment study

Saeed Morsali () and Feriha Yildirim ()
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Saeed Morsali: Gazi University
Feriha Yildirim: Gazi University

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2024, vol. 26, issue 5, No 50, 12219-12238

Abstract: Abstract This study aims to evaluate the environmental impact of using red mud (RM) as a partial replacement for cement in concrete production. Using industrial byproducts such as red mud as a raw material in concrete can reduce the environmental impacts of concrete and alumina industries. Red mud can also provide a sustainable solution for its disposal problem, while also improving the durability and strength of concrete. Life cycle assessment methodology was applied using Simapro© software. A cradle-to-gate analysis was carried out. The results were analyzed based on the Ecoinvent 3.8 database and ReCiPe method for 18 impact categories. The results show that the use of RM in concrete production also had a significant positive impact on all environmental impact categories, including freshwater ecotoxicity and human carcinogenic toxicity, compared to traditional concrete production. On the other hand, disposing of RM in landfills had been analyzed and from the results RM disposal showed significant negative impacts on the environment, including human carcinogenic toxicity, freshwater eutrophication, and marine ecotoxicity. These reductions vary between 0.2% (water consumption category) and 939.7% (Human carcinogenic toxicity). This study presents a significant contribution to the aluminum and construction industries by shedding light on the possibility of utilizing RM as a sustainable raw material in concrete production, leading to a reduction in environmental impact. By analyzing the properties of various concrete samples containing different percentages of RM, this study also highlights the potential for enhancing the mechanical properties of concrete through the incorporation of RM in certain amounts.

Keywords: Life cycle assessment; Red mud; Reuse of bauxite residue; Environmental impact; Sustainable concrete (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10668-023-03767-z

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