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

Fenaux, Michiel and Reyes Pozo, Encarnación and Moragues Terrades, Amparo and Gálvez Ruiz, Jaime (2013). Modelling of chloride transport in non-saturated concrete : from microscale to macroscale. In: "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.

Description

Title: Modelling of chloride transport in non-saturated concrete : from microscale to macroscale
Author/s:
  • Fenaux, Michiel
  • Reyes Pozo, Encarnación
  • Moragues Terrades, Amparo
  • Gálvez Ruiz, Jaime
Item Type: Presentation at Congress or Conference (Article)
Event Title: 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-8)
Event Dates: 11/03/2013-14/03/2013
Event Location: Toledo (España)
Title of Book: 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
Date: March 2013
ISBN: 978-84-941004-1-3
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Construcción
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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).

More information

Item ID: 28903
DC Identifier: http://oa.upm.es/28903/
OAI Identifier: oai:oa.upm.es:28903
Official URL: http://www.framcos8.org/frontal/default.asp
Deposited by: Memoria Investigacion
Deposited on: 04 Jun 2014 10:34
Last Modified: 01 Jun 2018 12:47
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