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=== Carbon Capture and Utilization ===
AOD slag has shown promising potential for usage as a carbon-capture construction material due to its high capacity for CO2 and its low cost. Carbonation curing, a process utilizing CO2 as a curing agent in concrete manufacturing, enhances the chemical properties of stainless steel slag by stabilizing it. During carbonation, g-C2S (di-calcium silicate) in the slag reacts with CO2 to produce compounds like calcite and silica gel, resulting in increased compressive strength and improved durability of cementitious materials. The incorporation of AOD slag as a replacement material in ordinary Portland cement (OPC) during carbonation curing has been studied, demonstrating positive effects on strength and reduced porosity.<ref>{{cite journal |last1=Moon
=== Cementitious Activity and Modifiers ===
AOD slag exhibits cementitious activity, but its properties can be changed by modifiers. Studies have focused on the impact of modifiers, such as B2O3 and P2O5 on preventing the crystal transition of β-C2S and improving the cementitious activity of the slag. Addition of B2O3 and P2O5 has shown curing effects and increased compressive strength. These findings suggest that proper selection of modifiers can enhance the performance of stainless steel slag in cementitious applications.<ref>{{cite journal |last1=Baciocchi
=== Chromium Leachability and Carbonation ===
Another aspect of AOD slag research is its carbonation potential and its impact on chromium leachability. Carbonation of the dicalcium silicate in AOD slag leads to the formation of various compounds, including amorphous calcium carbonate, crystalline calcite, and silica gel. The carbonation ratio of the slag affects the mineral phases, which subsequently influence chromium leachability. Optimal carbonation ratios have been identified to minimize chromium leaching risks during carbonation-related production activities.<ref>{{cite journal |last1=Wang
== References ==
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