Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/38267

TítuloSimulation of humidity fields in concrete: experimental validation and parameter estimation
Autor(es)Oliveira, Mateus António Nogueira
Azenha, Miguel
Lourenço, Paulo B.
EditoraJapanese Concrete Institute
RevistaJournal of Advanced Concrete Technology
CitaçãoOliveira, M. A., Azenha, M., & Lourenço, P. B. (2015). Simulation of humidity fields in concrete: Experimental validation and parameter estimation. Journal of Advanced Concrete Technology, 13(4), 214-229. doi: 10.3151/jact.13.214
Resumo(s)The moisture content in concrete structures has an important influence in their behavior and performance. Several vali-dated numerical approaches adopt the governing equation for relative humidity fields proposed in Model Code 1990/2010. Nevertheless there is no integrative study which addresses the choice of parameters for the simulation of the humidity diffusion phenomenon, particularly in concern to the range of parameters forwarded by Model Code 1990/2010. A software based on a Finite Difference Method Algorithm (1D and axisymmetric cases) is used to perform sensitivity analyses on the main parameters in a normal strength concrete. Then, based on the conclusions of the sensi-tivity analyses, experimental results from nine different concrete compositions are analyzed. The software is used to identify the main material parameters that better fit the experimental data. In general, the model was able to satisfactory fit the experimental results and new correlations were proposed, particularly focusing on the boundary transfer coeffi-cient.
Versão da editoraThe original publication is available in http://www.j-act.org/
Arbitragem científicayes
Aparece nas coleções:ISISE - Artigos em Revistas Internacionais

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