The Alternative Model of Water Vapour Sorption in Porous Building Materials

Mathematical modelling of water sorption in porous building materials is considered. The explanations of inadequacies of both Brunauer–Deming–Deming–Teller model for the high relative humidities range and Frenkel–Halsey–Hill model for the low relative humidities range reported by Pavlík et al. (Tran...

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Bibliographic Details
Published in:Transport in porous media 2012-10, Vol.95 (1), p.21-23
Main Author: Furmaniak, Sylwester
Format: Article
Language:English
Subjects:
Building materials
Civil Engineering
Classical and Continuum Physics
Construction materials
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Engineering geology
Exact sciences and technology
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Hydrology/Water Resources
Industrial Chemistry/Chemical Engineering
Isotherms
Porous materials
Sorption
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Summary:Mathematical modelling of water sorption in porous building materials is considered. The explanations of inadequacies of both Brunauer–Deming–Deming–Teller model for the high relative humidities range and Frenkel–Halsey–Hill model for the low relative humidities range reported by Pavlík et al. (Transp. Porous Med. 91:939–954, 2012 ) are proposed. The generalized D’Arcy and Watt (GDW) model is proposed as a simpler alternative for a procedure of experimental isotherms fitting proposed by Pavlík et al. The suitability of the GDW equation to describe the water sorption isotherms in the building materials for the whole range of relative humidities is confirmed.
ISSN:0169-3913
1573-1634
DOI:10.1007/s11242-012-0030-0