Issue |
MATEC Web Conf.
Volume 282, 2019
4th Central European Symposium on Building Physics (CESBP 2019)
|
|
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Article Number | 02011 | |
Number of page(s) | 6 | |
Section | Regular Papers | |
DOI | https://doi.org/10.1051/matecconf/201928202011 | |
Published online | 06 September 2019 |
A round robin campaign on the hygric properties of porous building materials
1 KU Leuven, Department of Civil Engineering, Building Physics Section, 3001 Leuven, Belgium
2 CONSTRUCT-LFC, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
3 China Academy of Building Research, Institute of Building Environment and Energy, 100013 Beijing, China
4 Łódź University of Technology, Department of Building Physics and Building Materials, 90-924 Łódź, Poland
5 Technische Universität Dresden, Institute of Building Climatology, 01069 Dresden, Germany
6 Technical University of Denmark, Department of Civil Engineering, Materials and Durability Section, 2800 Kgs. Lyngby, Denmark
7 School of Engineering, The University of Edinburgh, EH9 3JL Edinburgh, UK
8 Lund University, Department of Building and Environmental Technology, SE-221 00 Lund, Sweden
9 Czech Technical University in Prague, Faculty of Civil Engineering, Department of Materials Engineering and Chemistry, 166 29 Prague, Czech Republic
* Corresponding author: fengchi860602@gmail.com
The reliable determination of the hygric properties of porous building materials is important. In earlier round robin campaigns large discrepancies of measured hygric properties were found among different labs. Later studies indicated that differences in lab conditions and more importantly, personnel’s operation procedures and data processing methods, might have the greatest impact. To gain further insight, a new round robin campaign has been launched by KU Leuven (Belgium), to which another eight institutes contributed. A relatively stable and homogeneous ceramic brick is tested, and 3 standard tests are performed: the vacuum saturation test, the capillary absorption test and the cup test. During the campaign, two rounds of measurements are performed. In the 1st round, tests are performed according to participants’ respective experimental protocols. Next, a strict and detailed common protocol is prescribed. This paper reports on the results obtained in the 1st round of measurements. Results show that not much progress has been made since the EC HAMSTAD project: the vacuum saturation test leads to the most consistent results, while the cup test produces the largest discrepancies, most probably originating from sample sealing and humidity control.
© The Authors, published by EDP Sciences, 2019
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