Water vapor adsorption in porous building materials: experimental measurement and theoretical analysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F12%3A00188791" target="_blank" >RIV/68407700:21110/12:00188791 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s11242-011-9884-9" target="_blank" >http://dx.doi.org/10.1007/s11242-011-9884-9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11242-011-9884-9" target="_blank" >10.1007/s11242-011-9884-9</a>

Result language
angličtina
Original language name
Water vapor adsorption in porous building materials: experimental measurement and theoretical analysis
Original language description
An experimental and theoretical analysis of the water vapor adsorption in several types of porous building materials is presented. For the measurement of adsorption isotherms, a DVS-Advantage water sorption device is used. The experimental data is analyzed using theoretical formulas based on the BET, BSB, BDDT, and FHH isotherms, assuming a mono- as well as multi-layer water vapor adsorption. The BSB equation is found to provide a good approximation for the relative humidities below 0.6 - 0.7, whereas the FHH equation shows a sufficient accuracy for the relative humidities above 0.4 - 0.5. Based on a combination of BSB and FHH isotherms, a semi-empirical formula is proposed that allows one to obtain a very accurate approximation of experimental data for all analyzed materials and all values of the relative humidity.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JN - Civil engineering
OECD FORD branch
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Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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