MATEC Web of Conferences
Volume 6, 2013Concrete Spalling due to Fire Exposure: Proceedings of the 3rd International Workshop
|Number of page(s)||8|
|Section||Moisture, Pore Pressure and Innovative Technics|
|Published online||17 September 2013|
Combined NMR moisture, temperature and pressure measurements during heating
1 Department of Applied Physics, Eindhoven University of Technology, Eindhoven, The Netherlands
2 CSTB Centre Scientifique et Technique du Bâtiment, Paris, France
3 SIAME, University of Pau and Pays de l'Adour, Anglet, France
For model validation, quantitative measurements of the evolution of moisture, temperature, and pressure distributions in time are needed. For this purpose, we have developed an NMR setup to measure the moisture transport in heated building materials. The measured combined moisture content and temperature profiles give a unique insight in the moisture transport and dehydration kinetics inside concrete during fire. These measurements give the first quantitative proof for the build-up of a moisture peak due to the vapor pressure build-up. In this study we have also combined for the first time the measurement of the moisture and temperature profiles with the measurement of the pressure at one position, which show that the pressure build up is directly related to the moisture profiles.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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