Degradation mechanisms of reinforcing iron rebars in monuments: the role of multiscale porosity in the formation of corrosion products investigated by X-ray tomography

Jacot-Guillarmod, Mathieu; Rozenbaum, Olivier; L'Hostis, Valérie; Dillmann, Philippe; Neff, Delphine; Gervais Wüst, Claire Justine (2015). Degradation mechanisms of reinforcing iron rebars in monuments: the role of multiscale porosity in the formation of corrosion products investigated by X-ray tomography Journal of Analytical Atomic Spectrometry, 30(3), pp. 580-587. 10.1039/C4JA00388H

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Monuments in stone often contain metallic reinforcements, the stability and degradation state of which determines the entire integrity of the edifice. Understanding their long-term corrosion process is thus an essential step towards a safe and efficient conservation strategy. In this study, we show that combining laboratory and synchrotron tomography at different scales is efficient for getting an overall three-dimensional picture of the iron corrosion products found in iron rebars from Orléans cathedral. We demonstrate that beside chemical characterization of the corrosion products, the study of the shape of the corrosion products, their spatial distribution within the stone binder and their relationship with the porosity of the binder can bring significant insights into the corrosion process, and particularly help in understanding the multiple roles that porosity plays in corrosion.

Item Type:

Newspaper or Magazine Article

Division/Institute:

Bern University of the Arts
Bern University of the Arts > Institute Materiality in Art and Culture

Name:

Jacot-Guillarmod, Mathieu;
Rozenbaum, Olivier;
L'Hostis, Valérie;
Dillmann, Philippe;
Neff, Delphine and
Gervais Wüst, Claire Justine

Language:

English

Submitter:

Admin import user

Date Deposited:

31 Jan 2020 11:55

Last Modified:

07 Oct 2020 11:08

Publisher DOI:

10.1039/C4JA00388H

Related URLs:

ARBOR DOI:

10.24451/arbor.5899

URI:

https://arbor.bfh.ch/id/eprint/5899

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