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Segura Pérez, Ignacio; Molero Armenta, Miguel Angel; Aparicio, Sofia; Anaya Velayos, José Javier y Moragues Terrades, Amparo (2013). Decalcification of cement mortars: Characterisation and modelling. "Cement and Concrete Composites", v. 35 (n. 1); pp. 136-150. ISSN 0958-9465. https://doi.org/10.1016/j.cemconcomp.2012.08.015.
Título: | Decalcification of cement mortars: Characterisation and modelling |
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Autor/es: |
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Tipo de Documento: | Artículo |
Título de Revista/Publicación: | Cement and Concrete Composites |
Fecha: | Enero 2013 |
Volumen: | 35 |
Materias: | |
Palabras Clave Informales: | Microstructure; Decalcification; Characterisation; Modelling; Mortar; Ultrasound |
Escuela: | E.T.S.I. Caminos, Canales y Puertos (UPM) |
Departamento: | Ingeniería Civil: Construcción |
Licencias Creative Commons: | Reconocimiento - Sin obra derivada - No comercial |
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This paper presents the results of a thorough microstructural characterisation of a set of cement mortars (made with three w/b ratios and five different cement types), degraded by the ammonium nitrate method. Both destructive and ultrasonic non-destructive techniques were used to characterise the samples. The initial calcium content of the samples plays a dominant role in both the advance of the degradation process and the degradation grade of the samples. In addition, the decalcification process kinetics and the degradation grade are modelled, using Fick’s second law of diffusion and the shrinking unreacted- core model. Two parametric equations are presented and used to estimate the decalcification process kinetics and the degradation grade using accessible microstructural parameters of the native mortars, such as the initial CaO content, the open porosity, and the cementitious matrix volume fraction. Furthermore, the degraded depth in the samples is measured using ultrasonic testing with an average error of about 10%.
Tipo | Código | Acrónimo | Responsable | Título |
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Gobierno de España | BIA 2009-14395-C04-01 | DHOREDEND | José Javier Anaya Velayos | Study of concrete durability using destructive and non-destructive techniques |
ID de Registro: | 29158 |
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Identificador DC: | http://oa.upm.es/29158/ |
Identificador OAI: | oai:oa.upm.es:29158 |
Identificador DOI: | 10.1016/j.cemconcomp.2012.08.015 |
URL Oficial: | http://www.sciencedirect.com/science/article/pii/S0958946512001795 |
Depositado por: | Memoria Investigacion |
Depositado el: | 23 May 2017 12:55 |
Ultima Modificación: | 23 May 2017 12:55 |