Issue |
MATEC Web Conf.
Volume 282, 2019
4th Central European Symposium on Building Physics (CESBP 2019)
|
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Article Number | 02083 | |
Number of page(s) | 6 | |
Section | Regular Papers | |
DOI | https://doi.org/10.1051/matecconf/201928202083 | |
Published online | 06 September 2019 |
Investigation of thermal, moisture, and mechanical properties of wet and dry fired clay materials to assess frost damage risk
1 Kyoto University, Graduate School of Engineering, 615-8540 Kyoto, Japan
2 Hokkaido Research Organization, 078-8801 Asahikawa, Japan
* Corresponding author: be.fukui-k1820@archi.kyoto-u.ac.jp
Frost action is one of the main causes for deterioration of porous building materials under defined hygrothermal conditions. For an accurate assessment of the frost damage risk under various environmental conditions, thermal, moisture, and mechanical properties should be considered; the hygrothermal properties affect the distribution of temperature and amount of frozen water in the material, whereas the mechanical properties are necessary to predict deformation and damage. Moreover, the dependency of these properties on the moisture content should be understood. Therefore, in this study, thermal, moisture, and mechanical properties of wet and dry fired clay materials were measured. The fired clay materials were sintered at two different temperatures, 1000 °C and 1100 °C (samples T10 and T11, respectively) for comparison. The measured thermal and mechanical properties are considerably different in the wet state compared to the dry state. Freeze–thaw tests were conducted to investigate the relation between the material properties and the frost resistance under a simple experimental condition. As expected, based on the pore structure and obtained mechanical properties, T10 exhibited lower frost resistance than T11 in the freeze–thaw test. Finally, frost damage risk was assessed under various environmental conditions based on the obtained hygrothermal and mechanical properties.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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