Modelling of chloride transport in non-saturated concrete : from microscale to macroscale

Fenaux, Michiel; Reyes Pozo, Encarnación; Moragues Terrades, Amparo y Gálvez Ruíz, Jaime (2013). Modelling of chloride transport in non-saturated concrete : from microscale to macroscale. En: "8th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-8)", 11/03/2013-14/03/2013, Toledo (España). ISBN 978-84-941004-1-3.

Descripción

Título: Modelling of chloride transport in non-saturated concrete : from microscale to macroscale
Autor/es:
  • Fenaux, Michiel
  • Reyes Pozo, Encarnación
  • Moragues Terrades, Amparo
  • Gálvez Ruíz, Jaime
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-8)
Fechas del Evento: 11/03/2013-14/03/2013
Lugar del Evento: Toledo (España)
Título del Libro: Fracture mechanics of concrete and concrete structures : proceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-8), held in Toledo, Spain, 11-14 March 2013
Fecha: Marzo 2013
ISBN: 978-84-941004-1-3
Materias:
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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Resumen

A model for chloride transport in concrete is proposed. The model accounts for transport several transport mechanisms such as diffusion, advection, migration, etc. This work shows the chloride transport equations at the macroscopic scale in non-saturated concrete. The equations involve diffusion, migration, capillary suction, chloride combination and precipitation mechanisms. The material is assumed to be infinitely rigid, though the porosity can change under influence of chloride binding and precipitation. The involved microscopic and macroscopic properties of the materials are measured by standardized methods. The variables which must be imposed on the boundaries are temperature, relative humidity and chloride concentration. The output data of the model are the free, bound, precipitated and total chloride ion concentrations, as well as the pore solution content and the porosity. The proposed equations are solved by means of the finite element method (FEM) implemented in MATLAB (classical Galerkin formulation and the streamline upwind Petrov-Galerkin (SUPG) method to avoid spatial instabilities for advection dominated flows).

Más información

ID de Registro: 28903
Identificador DC: http://oa.upm.es/28903/
Identificador OAI: oai:oa.upm.es:28903
URL Oficial: http://www.framcos8.org/frontal/default.asp
Depositado por: Memoria Investigacion
Depositado el: 04 Jun 2014 10:34
Ultima Modificación: 22 Sep 2014 11:43
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