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Alkali-activated binders based on the coarse fraction of municipal solid waste incineration bottom ash Maldonado Alameda, Alex Giró Paloma, Jessica Mañosa Bover, Jofre Formosa Mitjans, Joan Chimenos Ribera, Josep Ma. Incineració Residus Ciment pòrtland Incineration Waste products Portland cement The potential of the least polluted fraction (from 8 to 30mm) of municipal solid waste incineration (MSWI) weathered bottom ash (WBA) as an alkali-activated cement precursor was evaluated. Alkali-activated WBA binders (AA-WBA) formulations were prepared through alkali-activation of WBA as sole precursor. Sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) mixtures with different pH's were used as alkali-activator solution. The effect of alkali-activator solution pH on the final properties was assessed. Results showed the hydrolytic stability of allformulations. The selective chemical extractions and physicochemical characterisation revealed the formation of the C-S-H, C-A-S-H, and (N,C)-A-S-H gels. The promising compressive strength results demonstrated the potential of AA-WBA binders. The increase of pH in the alkali-activated solution promotes the formation of gel reaction products and enhance mechanical properties. This investigation promotes the green cements manufacturing and the use of secondary resources to reduce the impact of natural resources extraction used for the ordinary Portland cement (OPC) production. 2023-03-28T17:23:22Z 2023-03-28T17:23:22Z 2021-01-23 2023-03-28T17:23:22Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 0366-3175 https://hdl.handle.net/2445/196119 706271 eng Reproducció del document publicat a: https://doi.org/10.1016/j.bsecv.2020.12.002 Boletin de la Sociedad Española de Ceramica y Vidrio, 2021, vol. 61, num. 4, p. 1-12 https://doi.org/10.1016/j.bsecv.2020.12.002 cc-by-nc-nd (c) Sociedad Española de Ceramica y Vidrio, 2021 https://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess 12 p. application/pdf Consejo Superior de Investigaciones Científicas (CSIC) Articles publicats en revistes (Ciència dels Materials i Química Física)