Use of Impedance Spectroscopy for the Characterization of the Microstructure of Alkali Activated SiMn Slag: Influence of Activator and Time Evolution

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Títol: Use of Impedance Spectroscopy for the Characterization of the Microstructure of Alkali Activated SiMn Slag: Influence of Activator and Time Evolution
Autors: Navarro Martínez, Rosa María | Zornoza, Emilio | García Alcocel, Eva María | Sánchez, Isidro
Grups d'investigació o GITE: Durabilidad de Materiales y Construcciones en Ingeniería y Arquitectura
Centre, Departament o Servei: Universidad de Alicante. Departamento de Ingeniería Civil | Universidad de Alicante. Departamento de Construcciones Arquitectónicas
Paraules clau: SiMn slag | Alkali activation | Pastes | Microstructure | Impedance spectroscopy
Data de publicació: 13-de desembre-2022
Editor: Springer Nature
Citació bibliogràfica: Journal of Nondestructive Evaluation. 2023, 42:8. https://doi.org/10.1007/s10921-022-00918-6
Resum: The impedance spectroscopy technique has been used to study the microstructure of the binder resulting from the alkaline activation of SiMn slag. Two alkaline activators were used: waterglass and NaOH. Three different concentrations were analysed for both activators: 3.0, 3.5 and 4.0% Na2O for NaOH; and 4.0, 4.5 and 5.0% Na2O for waterglass with a constant SiO2/Na2O ratio of 1.0. The time evolution of the microstructure has been followed up using the non-destructive technique of impedance spectroscopy. This technique has been proved to be effective describing the microstructural changes in alkali activated pastes, and also can help predicting the mechanical behavior of mortars. The use of the resistivity itself seems to be deficient, but the analysis of the electrical parameters calculated from the impedance spectra measured gives a complete idea of the evolution in the material.
Patrocinadors: Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. The paper is founded by the research project granted by the Spanish Ministry of Science and Innovation for project funding (PID2020-118322RB-I00) through the “Programa Estatal de I + D + i Orientada a los Retos de la Sociedad” included in the “Plan Estatal de Investigación Científica y Técnica y de Innovación 2017–2020”.
URI: http://hdl.handle.net/10045/130338
ISSN: 0195-9298 (Print) | 1573-4862 (Online)
DOI: 10.1007/s10921-022-00918-6
Idioma: eng
Tipus: info:eu-repo/semantics/article
Drets: © The Author(s) 2022. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Revisió científica: si
Versió de l'editor: https://doi.org/10.1007/s10921-022-00918-6
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