MATEC Web of Conferences
Volume 6, 2013Concrete Spalling due to Fire Exposure: Proceedings of the 3rd International Workshop
|Number of page(s)||2|
|Section||Moisture, Pore Pressure and Innovative Technics|
|Published online||17 September 2013|
Permeability of concrete under thermal and compressive stress influence; an experimental study
Material Technology Innsbruck (MTI), University of Innsbruck, Technikerstraße 13, 6020 Innsbruck, Austria
In recent years the permeability was found as one of the main parameters affecting the durability of concrete. Especially in concrete at high temperatures in case of fire loading, the interaction of thermal/mechanical loading and fluid transfer strongly influences degradation of mechanical properties within concrete and spalling of near-surface concrete layers. To understand the change in transport properties of concrete, a new experimental setup was developed, allowing us to conduct permeability tests under uniaxial compressive loading up to 20 MPa and thermal condition up to 350 °C. Based on the obtained results, the effect of both mechanical and thermal loading on the effective transport properties is highlighted and relations to more simplified test setups, disregarding mechanical loading and/or conducting the permeability test at room temperature giving the residual permeability, are established.
© 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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