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Aplicación de la caracterización eléctrica al estudio de las fases hidratadas de cemento con adición de escorias de centrales térmicas

Authors: Menéndez Méndez, Esperanza; Frutos Vaquerizo, José de; Álvaro, A.M.;

Aplicación de la caracterización eléctrica al estudio de las fases hidratadas de cemento con adición de escorias de centrales térmicas

Abstract

[ES] En este trabajo, se estudia la evolución desde su inicio de las fases de hidratación de materiales cementicios a los que se incorporan cenizas volantes y escorias procedentes de centrales térmicas. Mediante medidas de espectroscopía de impedancia eléctrica (EIS), y de difracción de rayos X (XRD), se analiza el proceso desde la etapa inicial visualizando los cambios que se producen. Se consideran diferentes elementos de sustitución y se determina para cada uno de ellos cuando se inician los procesos, cuando se completan y los cambios que sufren durante el mismo. Se relacionan los valores de EIS con los de DRX para determinar las fases que se transforman, y se indica para cada sustitución como se modifica la transformación de las fases en función del tiempo y en comparación con el material de referencia. Se pone de manifiesto que la utilización de EIS, trabajando en función de la frecuencia y con los parámetros eléctricos adecuados es una herramienta muy potente para hacer el seguimiento a tiempo real de estos procesos.

[EN] The present paper investigates the influence of using Bottom and Fly Ash as partial replacement of cement in the hydration process. Through measurements of electrical impedance spectroscopy (EIS) and X -ray diffraction (XRD), we analyze from the early stages to the hydration process to the end. Values of EIS, XRD and its relation, are used to determine transformation of hydrated phases, and for each of the substitutions, is indicated as modified the hydrated phase as a function of time and compared it with the reference material. It also proves the relevance of using EIS measures in real time, and as non–destructive testing to characterize the hydration process of these materials.

Este trabajo está financiado por el proyecto MAT2010-21088-C03-03 (España).

Peer reviewed

Country
Spain
Keywords

Bottom ash, electrical characterization, microstructure, Clay industries. Ceramics. Glass, Proceso de hidratción, proceso de hidratación, Microestructura, propiedades químicas, Electrical characterization, bottom ash, proceso de hidratación., Ceniza de fondo, Cenizas de fondo, hydration process, Microstructure, microestructura, Telecomunicaciones, Materiales, Chemical properties, ceniza de fondo, TP785-869, Propiedades químicas, Hydration process, chemical properties

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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