A round robin campaign on the hygric properties of porous building materials

Research output: Contribution to conferencePaper – Annual report year: 2019Researchpeer-review

  • Author: Feng, Chi

    KU Leuven, Belgium

  • Author: Guimarães, Ana Sofia

    University of Porto, Portugal

  • Author: Ramos, Nuno

    University of Porto, Portugal

  • Author: Sun, Lixin

    China Academy of Building Research, China

  • Author: Gawin, Dariusz

    Lodz University of Technology, Poland

  • Author: Konca, Piotr

    Lodz University of Technology, Poland

  • Author: Zhao, Jianhua

    Technische Universität Dresden, Germany

  • Author: Grunewald, John

    Technische Universität Dresden, Germany

  • Author: Hansen, Kurt Kielsgaard

    Materials and Durability, Department of Civil Engineering, Technical University of Denmark, Brovej, 2800, Kongens Lyngby, Denmark

  • Author: Hall, Christopher

    University of Edinburgh, United Kingdom

  • Author: Fredriksson, Maria

    Lund University, Sweden

  • Author: Pavlík, Zbyšek

    Czech Technical University in Prague, Czech Republic

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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.
Original languageEnglish
Publication date2019
Number of pages6
Publication statusAccepted/In press - 2019
Event4th Central European Symposium on Building Physics - Prague, Czech Republic
Duration: 2 Sep 20195 Sep 2019
Conference number: 4
https://www.cesbp2019.org/

Conference

Conference4th Central European Symposium on Building Physics
Number4
CountryCzech Republic
CityPrague
Period02/09/201905/09/2019
Internet address

ID: 176817307