Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/86632
Author(s): A. S. Guimarães
J. M. P. Q. Delgado
V. P. de Freitas
A. P. Albuquerque
Title: The effect of salt solutions and absorption cycles in the capillary and drying coefficient of red brick samples with different joints
Issue Date: 2016
Abstract: Rising damp can reduce building's aesthetical value, comfort, and health mark when combined with the existence of soluble saltsin the building components and in the ground water can even lead to material decomposition and compromise its structuralperformance. This research work intended to study the effect of different absorption cycles of two saturated solutions of sodiumsulphate and potassium chloride in the capillary absorption curves obtained through the partial immersion of red brick sampleswithout and with different joints. The results revealed significant differences in the capillary coefficients obtained when sampleswere tested with salt solutions. In the end of this paper an evaluation of the drying kinetics was presented for all the tested samples.Four different first-order kinetics models, available in the literature, were adjusted to describe the drying process and the resultspoint that the Page and Logarithmic models allow the best fit. The apparent molecular diffusion coefficient for solid red bricksamples saturated with different solutions and joints was also estimated.
URI: https://hdl.handle.net/10216/86632
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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