Numerical simulation of humidity fields in concrete considering the model code formulation

Author(s): Mateus Oliveira, Miguel Azenha, Paulo B. Lourenço
Paper category: Proceedings
Book title: Proceedings on International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Moisture in Materials and Structures
Editor(s): Kurt Kielsgaard Hansen, Carsten Rode and Lars-Olof Nilsson
ISBN: 978-2-35158-178-0
e-ISBN: 978-2-35158-179-7
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 226 - 235
Total Pages: 10
Language : English

Abstract: The influence of moisture content in the behavior and performance of construction materials, such as concrete is well identified in the literature. For concrete structures, the humidity content is influenced by the processes of drying and self-desiccation that should be reasonably predicted in design stages for several reasons. This work focuses on the formulation for the relative humidity field presented in Model Codes 1990/2010, and provides an evaluation of its feasibility in view of existing data in the literature. This adoption was done because of the relative simplicity of the modelling and the comprehensiveness of the Model Code itself. Considering this formulation, an implementation was made through the use of the finite difference method. The implemented model was used for simulation of experimental results from two references in which relative humidity profiles were measured. In general terms, the model could fairly fit the experimental results, in spite of the need to specifically address the proposal of a boundary transfer coefficient to achieve successful simulations.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00