Fenaux, M.; Reyes, E.; Gálvez, J.C.; Moragues, A.; Bernal, J. On the Tortuosity-Connectivity of Cement-Based Porous Materials. Appl. Sci.2021, 11, 5812.
Fenaux, M.; Reyes, E.; Gálvez, J.C.; Moragues, A.; Bernal, J. On the Tortuosity-Connectivity of Cement-Based Porous Materials. Appl. Sci. 2021, 11, 5812.
Fenaux, M.; Reyes, E.; Gálvez, J.C.; Moragues, A.; Bernal, J. On the Tortuosity-Connectivity of Cement-Based Porous Materials. Appl. Sci.2021, 11, 5812.
Fenaux, M.; Reyes, E.; Gálvez, J.C.; Moragues, A.; Bernal, J. On the Tortuosity-Connectivity of Cement-Based Porous Materials. Appl. Sci. 2021, 11, 5812.
Abstract
In this work, the transport equations of ionic species in concrete are studied. First, the equations at the porescale are considered, which are then averaged over a representative elementary volume. The so obtained transport equations at the macroscopic scale are thoroughly examined and each term is interpreted. Furthermore, it is shown that the tortuosity-connectivity does not slow the average speed of the ionic species down. The transport equations in the representative elementary volume are then compared with the equations obtained in an equivalent pore. Lastly, comparing Darcy’s law and the Hagen-Poiseuille equation in a cylindrical equivalent pore, the tortuosity-connectivity parameter is obtained for four di erent concretes. The proposed model provides very good results when compared with the experimentally obtained chloride profiles for two additional concretes.
Keywords
Tortuosity; Microscale-Macroscale; Averaging; Equivalent Pore; Ion Transport; Concrete
Subject
Engineering, Automotive Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
