PSI - Issue 67

G. Goracci et al. / Procedia Structural Integrity 67 (2025) 30–38 G. Goracci/ Structural Integrity Procedia 00 (2024) 000 – 000

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The use of carbonated periwinkle shells and steel slag enhances the sustainability of concrete by reducing CO 2 emissions and addressing waste management issues, thereby contributing to a circular economy. The development and deployment of cool cementitious materials can significantly reduce urban temperatures, leading to decreased energy consumption for air conditioning and improved urban livability. Future research should explore the long-term durability and weathering resistance of these materials in real-world applications. Additionally, optimization of carbonation processes is necessary to enhance the efficiency and scalability of CO 2 capture using different industrial by-products. In conclusion, repurposing industrial waste materials for CO 2 sequestration and UHI mitigation presents a viable pathway for combating climate change while fostering sustainable and livable urban environments. References AzariJafari, H., Xu, X., Gregory, J., Kirchain, R., 2021. Urban-Scale Evaluation of Cool Pavement Impacts on the Urban Heat Island Effect and Climate Change. Environ Sci Technol 55, 11501 – 11510. https://doi.org/10.1021/acs.est.1c00664 Chen, Z., Liu, Y., He, B., Jing, X., Cang, D., Zhang, L., 2024. Study on evolution of pores channel in carbonation steel slag samples with fly ash. Constr Build Mater 411, 134471. https://doi.org/10.1016/j.conbuildmat.2023.134471 Dolado, J.S., Goracci, G., Arrese-igor, S., Torres, A., Liberal, I., Beruete, M., Gaitero, J.J., Cagnoni, M., Cappelluti, F., 2023. Radiative Cooling Properties of Portlandite and Tobermorite : Two Cementitious Minerals of Great Relevance in Concrete Science and Technology. https://doi.org/10.1021/acsaom.3c00082 Elyasi Gomari, K., Rezaei Gomari, S., Hughes, D., Ahmed, T., 2024. Exploring the potential of steel slag waste for carbon sequestration through mineral carbonation: A comparative study of blast-furnace slag and ladle slag. J Environ Manage 351, 119835. https://doi.org/10.1016/j.jenvman.2023.119835 Fang, Y., Shan, J., Wang, Q., Zhao, M., Sun, X., 2024. Semi-dry and aqueous carbonation of steel slag: Characteristics and properties of steel slag as supplementary cementitious materials. Constr Build Mater 425, 135981. https://doi.org/10.1016/j.conbuildmat.2024.135981 Goracci, G., Saeed, E., Ogundiran, M.B., Iturrospe, A., Arbe, A., Aymonier, C., Dolado, J.S., 2023. Cool Concrete Incorporating Carbonated Periwinkle Shell: A Sustainable Solution for Mitigating Urban Heat Island Effects. ACS Sustain Chem Eng. https://doi.org/10.1021/acssuschemeng.3c05817 Jiang, Y., Ling, T.C., Shi, C., Pan, S.Y., 2018. Characteristics of steel slags and their use in cement and concrete — A review. Resources, Conservation and Recycling 136, 187 – 197. https://doi.org/10.1016/j.resconrec.2018.04.023 Kousis, I., Pisello, A.L., 2023. Evaluating the performance of cool pavements for urban heat island mitigation under realistic conditions: A systematic review and meta-analysis. Urban Clim 49, 101470. https://doi.org/10.1016/j.uclim.2023.101470 Li, L., Chen, T., Gao, X., 2024. Synergistic effect of CO2-mineralized steel slag and carbonation curing on cement paste. Cem Concr Compos 145, 105357. https://doi.org/10.1016/j.cemconcomp.2023.105357 Li, Q., Fan, Y., Shah, S.P., 2023. Effect of nano-metakaolin on establishment of internal structure of fly ash cement paste. Journal of Building Engineering 77, 107484. https://doi.org/10.1016/j.jobe.2023.107484 Liu, B., Qin, J., Shi, J., Jiang, J., Wu, X., He, Z., 2021. New perspectives on utilization of CO2 sequestration technologies in cement-based materials. Constr Build Mater 272, 121660. https://doi.org/10.1016/j.conbuildmat.2020.121660 Liu, Z., Lv, C., Wang, F., Hu, S., 2023. Recent advances in carbonatable binders. Cem Concr Res 173, 107286. https://doi.org/10.1016/j.cemconres.2023.107286 Liu, Z., Meng, W., 2021. Fundamental understanding of carbonation curing and durability of carbonation-cured cement-based composites: A review. Journal of CO2 Utilization 44. https://doi.org/10.1016/j.jcou.2020.101428 Luo, Y., He, D., 2021. Research status and future challenge for CO2 sequestration by mineral carbonation strategy using iron and steel slag. Environmental Science and Pollution Research 28, 49383 – 49409. https://doi.org/10.1007/s11356-021-15254-x