Utilize este identificador para referenciar este registo: https://hdl.handle.net/10216/101579
Autor(es): N. M. M. Ramos
J. M. P. Q. Delgado
V. P. Freitas
Título: Anomalous diffusion during water absorption in porous building materials - experimental evidence
Data de publicação: 2008
Resumo: The sorption and transport of water in two porous building materials, clay brick and autoclaved aerated concrete, was studied in detail. The evolution of the distribution of liquid in the porous medium was analysed in terms of the Boltzmann transform method and anomalous diffusion equation proposed by Küntz and Lavallée [1]. The apparent moisture diffusion coefficients of water were determined from the total water profiles using a modified Boltzmann-Matano analysis, and a good agreement with literature values was found. The application of anomalous diffusion model to building materials indicates that the previous 1/ 2 t relation is not entirely accurate to estimate the volume of absorbed water. This result has particular relevance for evaluating the durability of building structures.
Assunto: Engenharia civil, Outras ciências da engenharia e tecnologias
Civil engineering, Other engineering and technologies
Áreas do conhecimento: Ciências da engenharia e tecnologias::Outras ciências da engenharia e tecnologias
Engineering and technology::Other engineering and technologies
URI: https://hdl.handle.net/10216/101579
Tipo de Documento: Artigo em Revista Científica Internacional
Condições de Acesso: restrictedAccess
Aparece nas coleções:FEUP - Artigo em Revista Científica Internacional

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94403.2.pdf
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Anomalous Diffusion during Water Absorption in Porous Building Materials - Experimental Evidence113.34 kBAdobe PDF    Request a copy from the Author(s)
94403.1.pdf
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Anomalous Diffusion during Water Absorption in Porous Building Materials - Experimental Evidence75.27 kBAdobe PDF    Request a copy from the Author(s)
94403.pdf
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443.38 kBAdobe PDF    Request a copy from the Author(s)


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