This paper first illustrates the production processes, properties, and applications of steel slag, and then summarizes the key findings of the environmental benefits for steel slag utilization using life cycle assessment from the reviewed literature. This paper also identifies the limitations of quantifying the environmental benefits using …
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Carbon capture, utilization, and storage (CCUS) is one of the most prominent emerging technologies for mitigating global climate change. In this study, a comparative evaluation for CO2 fixation by carbonation of steelmaking slag was performed by life cycle assessment (LCA) using Umberto 5.5.4 software, with the Swiss Eco-invent 2.2 …
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The Life Cycle Analysis consists of three sub-classifications: Life cycle carbon emission assessment (LCCO2A), Life Cycle Energy Assessment (LCEA) ... Utilization of steel slag as an eco-friendly material in concrete for construction. J. Green Eng. (JGE), 10 (2020), pp. 2408-2419.
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Steel fibers can enhance the anti-sulfate resistance, and the compressive strength of UHPGC-SF2 can still reach 148.6 MPa even after 15 cycles. The steel slag exhibits favorable resistance to sulfate erosion in the later stages. (3) The larger the dosage of steel slag, the worse the freeze-thaw cycle resistance.
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If as efficient as possible processing of the solid steel slag material is desired, the ammonium chloride concentration in the calcium extraction stage should exceed the stoichiometric requirements defined by Eq. ... Life cycle impact assessment results per impact category for three different PCC production methods, and also …
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In addition, the incorporation of steel slag is shown to reduce CO 2 emissions by approximately 40 kg/m 3, as determined through life cycle assessment software, while simultaneously enhancing flowability when compared to UHPC incorporating natural aggregate. Although the compressive and tensile strength of UHPC with steel …
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Towards the co-benefits of carbon capture, utilization and sequestration: A life cycle assessment study for steel slag disposal. 2024, Journal of Cleaner Production. Show abstract. Achieving decarbonization in the steel industry is of paramount importance for global carbon neutrality. Given the unavoidable generation of calcium-containing …
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The steel slag is used as a secondary cementitious binder or aggregates for road construction. The slag aggregate is an ideal replacement to natural aggregate to utilize in the base course and subbase course [13]. It can easily transfer heavy loads, its rough texture can avoid skidding of vehicles, and can prevent the water penetrating the ...
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Using the life cycle assessment (LCA) methodology, the impacts of the primary steel production via the blast furnace route and the scrap-based secondary steel …
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The life cycle assessment shows that the global warming potential of AC of steel slag is ~96.2-24.9 kg CO2-eq/t steel slag, which can offset the carbon emissions due to further grinding.
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1. Introduction. China is the world's largest carbon emitter and steel producer. In 2022, China's CO 2 emissions reached 12.1 Gt, accounting for 33% of the global total (IEA, 2023).Additionally, China's crude steel production reached 1.018 billion tonnes, 53.9% of the global share (WSA, 2023a).The steel industry is one of the vital foundational …
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Industrial wastes such as coal bottom ash, paper sludge ash, and biomass fly ash have also been studied. Recently, other types of slags, including copper slag, steel slag, and electric arc furnace ...
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Overall, the introduced treatment methods can consume f-CaO during the total life cycle of steel slag. In the hot slag stage, hot steam aging equipment and molten slag converting equipment can be installed on the steel slag production line to treat the fresh steel slag according to its characteristics. For the steel slags stockpiling in slag ...
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Influence of steel slag and steel fiber on the mechanical properties, durability, and life cycle assessment of ultra-high performance geopolymer concrete. Author links open overlay panel Zikai Xu a b, Jiupeng Zhang a b, Jiajun Zhang a, Qiquan Deng a, Zhijia Xue a, Guojing Huang a b, Xiaoming Huang c.
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Testing physical and mechanical properties of nontraditional concrete with steel slag as a substitute for natural aggregates of 4/8 mm and 8/16 mm fractions confirmed the possibility of using slag ...
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Our research evaluates the environmental improvements of a plant generating and recovering the steel slag by using the Organizational Life Cycle Assessment methodology (O-LCA) and moving the attention from the product incorporating the steel slag, already investigated in the scientific literature, to the plant generating the steel slag ...
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The Life Cycle Assessment (LCA) conducted in this study provided a comprehensive evaluation of an innovative asphalt mixture that incorporates Steel Slag …
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Steel slag (SS) is regarded as a potentially promising alternative material for road construction, which could ameliorate the shortage of high-quality aggregate and …
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The internal recycling process of BOF slag which is one of the huge solid wastes from iron and steel industry was emphasized. Based on the four scenarios of different internal recycling strategies ...
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Rutting was not significantly different from the control section when steel slag was used in the base and/or subbase pavement structure. Rutting increased from 12.5 to 17.9 mm at the end of design life when slag was used in the WC layer. Further increase in rutting resulted when the steel slag was introduced in the BBC layer.
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With the large portions of alkaline silicate mineral content, steel slag can also be used as a suitable material for carbon capture to mitigate global warming. This article comprehensively reviews the environmental performance of steel slag utilization, especially emphasizing quantitative evaluation using life cycle assessment.
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The data from the production of the three construction blocks have been collected and used to perform a life cycle assessment (LCA) study, comparing SSS-block production with …
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This paper analyses the environmental impact of replacing high-quality coarse aggregates by electric arc furnace (EAF) steel slag. A Life Cycle Assessment (LCA) was performed on three asphalt mixtures containing different aggregates: namely ophite, slag 1 and slag 2. The inventory gaps were filled by performing several …
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In the context of sustainable road construction, this study conducts a Life Cycle Assessment (LCA) to evaluate the environmental impact of an innovative asphalt mixture incorporating Steel Slag Aggregate (SSA) and Reclaimed Asphalt (RA), with a specific focus on the production phase.
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This paper compares the environmental impact of artificial steel slag aggregates and steel slag block via life cycle assessment. The global warming …
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1. Introduction. Electric arc furnace slag (EAFS) is a by-product generated in the semi-integrated steelmaking process, which uses metal scrap as the basic raw material, and for that reason has been considered the most competitive and sustainable process for steel production, representing over 40% of the steel produced worldwide (Pellegrino et …
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The final CO 2 sequestration capacity of steel slag is closely related to the reaction parameters (i.e., reaction duration, reaction temperature, CO 2 vol concentration, and liquid-solid ratios) of mineralization. The reaction parameters may have synergistic effects on the ability of steel slag to sequestrate CO 2. Therefore, the single-factor ...
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Based on the four scenarios of different internal recycling strategies for BOF slag, life cycle assessment (LCA) as a valuable tool for industrial solid waste …
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Steel slag is a by-product obtained through the separation of molten steel from impurities in steel-making furnaces. It can be produced by different types of furnaces (blast, basic oxygen, electric arc, ladle furnaces). The reuse of metallurgical slags in road pavements can pursue aims of recycling and environmental sustainability. Based on the …
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The internal recycling process of BOF slag which is one of the huge solid wastes from iron and steel industry was emphasized. Based on the four scenarios of different internal recycling strategies for BOF slag, life cycle assessment (LCA) as a valuable tool for industrial solid waste management was applied to analyze the …
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