Decalcification of cement mortars: Characterisation and modelling

Segura Pérez, Ignacio and Molero Armenta, Miguel Angel and Aparicio, Sofia and Anaya Velayos, José Javier and 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.

Description

Title: Decalcification of cement mortars: Characterisation and modelling
Author/s:
  • Segura Pérez, Ignacio
  • Molero Armenta, Miguel Angel
  • Aparicio, Sofia
  • Anaya Velayos, José Javier
  • Moragues Terrades, Amparo
Item Type: Article
Título de Revista/Publicación: Cement and Concrete Composites
Date: January 2013
Volume: 35
Subjects:
Freetext Keywords: Microstructure; Decalcification; Characterisation; Modelling; Mortar; Ultrasound
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Construcción
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (3MB) | Preview

Abstract

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%.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBIA 2009-14395-C04-01DHOREDENDJosé Javier Anaya VelayosStudy of concrete durability using destructive and non-destructive techniques

More information

Item ID: 29158
DC Identifier: http://oa.upm.es/29158/
OAI Identifier: oai:oa.upm.es:29158
DOI: 10.1016/j.cemconcomp.2012.08.015
Official URL: http://www.sciencedirect.com/science/article/pii/S0958946512001795
Deposited by: Memoria Investigacion
Deposited on: 23 May 2017 12:55
Last Modified: 23 May 2017 12:55
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM