2026-04-13T02:37:24Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1963112025-12-04T20:54:09Zcom_2072_1057col_2072_478796col_2072_478917

Fluidised-bed incineration bottom ash as the sole precursor of alkali-activated binders: A comparison with bottom ash from grate incinerators Maldonado Alameda, Alex Mañosa Bover, Jofre Miro-Escola, J. Quintero-Payan, Alex C. Chimenos Ribera, Josep Ma. Incineració Materials de construcció Residus Incineration Building materials Waste products The novel formulation of alkali-activated binders (AABs) using incineration bottom ash (IBA) from fluidised bed (FB) combustion technology as a sole precursor was assessed. In addition, IBA-FB was compared with IBA from moving grate (IBA-MG) combustion technology. The AABs formulated with IBA-FB (AAB-FB) and IBA-MG (AAB-MG) were also evaluated from a physicochemical, mechanical, and environmental perspective. The results revealed that specific surface area in IBA-FB hinders the retention of kneading water of fresh pastes, affecting the workability, consistency, porosity, and mechanical strength of AAB-FB. Moreover, the low calcium content of IBA-FB requires that the formulated AABs must be cured at higher curing temperatures to ensure the formation of (N,C) ASH gels, while the high calcium content of IBA-MG promotes the formation of CSH gels at room temperature. The compressive strength results demonstrated that AAB-MG (≈ 11 MPa) and AAB-FB (≈ 8 MPa) could be used for non-structural purposes. 2023-03-31T14:00:13Z 2023-03-31T14:00:13Z 2022-12-13 2023-03-31T14:00:13Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: https://doi.org/10.1016/j.conbuildmat.2022.130001 Construction and Building Materials, 2022, vol. 364, p. 1-12 https://doi.org/10.1016/j.conbuildmat.2022.130001 cc-by-nc-nd (c) Maldonado Alameda, Alex et al., 2022 https://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Elsevier Articles publicats en revistes (Ciència dels Materials i Química Física)