Abstract
There is an increasing focus on the possibilities of utilizing the absorptive ability of porous materials
to create passive control of relative humidity (RH) variations in the indoor air.This has led to the need for determination
of a newparameter that can be used for characterization of materials.The dynamic nature of the buffering
phenomena makes it difficult to use the standard hygrothermal material properties directly for this purpose.
In this paper some experimental results on aerated cellular concrete are used for pointing out the methodological
and experimental use of dynamic tests for determination of the moisture buffer value of building materials.
Special focus is given to the significance of e.g. the equilibrium state, the step size in the RH and whether one
is studying absorption or desorption steps. In addition, the paper summarizes shortly the experience until now
of studying the moisture buffer phenomenon.
In the experiments the material samples were exposed to a sudden change in the RH of the ambient air which
were either consecutive absorption and desorption steps or periodically varying cyclic steps.
Original language | English |
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Title of host publication | Research in Building Physics and Building Engineering : 3rd International Building Physics Conference |
Editors | Paul Fazio, Hua Ge, Jiwu Rao, Guylaine Desmarais |
Publisher | Taylor & Francis |
Publication date | 2006 |
Pages | 19-26 |
ISBN (Print) | 04-1541-675-2 |
Publication status | Published - 2006 |
Event | 3rd International Building Physics Conference: Research in Building Physics and Building Engineering : - Montreal, Canada Duration: 27 Aug 2006 → 31 Aug 2006 Conference number: 3 |
Conference
Conference | 3rd International Building Physics Conference |
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Number | 3 |
Country/Territory | Canada |
City | Montreal |
Period | 27/08/2006 → 31/08/2006 |