| Issue |
MATEC Web Conf.
Volume 282, 2019
4th Central European Symposium on Building Physics (CESBP 2019)
|
|
|---|---|---|
| Article Number | 02040 | |
| Number of page(s) | 6 | |
| Section | Regular Papers | |
| DOI | https://doi.org/10.1051/matecconf/201928202040 | |
| Published online | 06 September 2019 | |
Characterization of the diffusivity function through water-uptake tests
1 University of Innsbruck, Unit for Energy Efficient Buildings, Technikerstrasse 13, 6020 Innsbruck, Austria.
2 KU Leuven, Department of Civil Engineering, Building Physics Section, Kasteelpark Arenberg 40, 3001 Leuven, Belgium.
* Corresponding author: michele.janetti@uibk.ac.at
A method is proposed to determine the moisture diffusivity of capillary active materials by means of water-uptake tests performed with different initial water contents. The method is based on an analytical approach, in which the diffusivity is approximated as a multiple step function of the water content. Contrary to other well-established techniques, the method proposed here requires neither the knowledge of the water content distribution in the absorbing sample, nor the application of numerical simulations. Experiments are carried out on calcium silicate samples.
© The Authors, published by EDP Sciences, 2019
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