The effect of compressive loading on the residual gas permeability of concrete
| Autor: | Christian La Borderie, Hatem Kallel, Jihad Miah, Hélène Carré, Pierre Pimienta |
|---|---|
| Přispěvatelé: | Centre Scientifique et Technique du Bâtiment (CSTB), Laboratoire des Sciences de l'Ingénieur Appliquées à la Mécanique et au génie Electrique (SIAME), Université de Pau et des Pays de l'Adour (UPPA) |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction Spall Residual Fluid transport 0201 civil engineering Volumetric flow rate Compressive load [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering Permeability (earth sciences) Axial compression 021105 building & construction General Materials Science Composite material ComputingMilieux_MISCELLANEOUS Pressure gradient Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials Construction and Building Materials, Elsevier, 2019, 217, pp.12-19. ⟨10.1016/j.conbuildmat.2019.05.057⟩ |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2019.05.057 |
| Popis: | Concrete permeability is related to pore connectivity and measures the flow rate of gases and liquids through the concrete under a pressure gradient. Information about concrete permeability - both in ordinary environmental conditions and after the exposure to high temperature - is, therefore, badly needed to better understand fluid transport in concrete, with specific reference to high temperature. In fact, permeability influences concrete spalling in fire by favoring pore-pressure build-ups during the heating process. In this research project, two different procedures are adopted to carry out permeability tests on concrete specimens either unloaded or preloaded during the heating process. The results show that concrete permeability strongly depends on crack width and orientation, both are affected by the axial compression or radial confinement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect