Journal article
RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking
- Abstract:
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The collapse of reinforced autoclaved aerated concrete (RAAC) panels has attracted considerable public and academic interest. As detailed experimental data are not yet available and replicating the natural corrosion process requires years or decades, computational modelling is essential to understand under which conditions corrosion remains concealed. The very high porosity of RAAC is widely suspected to be a major contributing factor. However, current corrosion-induced cracking models are known to struggle with capturing the role of concrete porosity. To remedy this critical deficiency, we propose to enrich corrosion-induced cracking modelling with the analytical solution of reactive transport equations governing the precipitation of rust and a porosity-dependent description of diffusivity. With this, the corrosion concealment in RAAC panels is studied computationally for the first time, revealing that RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking and allowing to map the conditions most likely to result in sudden collapse.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.6MB, Terms of use)
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- Publisher copy:
- 10.1038/s41529-025-00596-5
Authors
- Funder identifier:
- https://ror.org/001aqnf71
- Grant:
- MR/V024124/2
- MR/V024124/1
- Publisher:
- Springer Nature
- Journal:
- npj Materials Degradation More from this journal
- Volume:
- 9
- Issue:
- 1
- Article number:
- 44
- Publication date:
- 2025-05-07
- Acceptance date:
- 2025-04-23
- DOI:
- EISSN:
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2397-2106
- Language:
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English
- Pubs id:
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2122357
- Local pid:
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pubs:2122357
- Deposit date:
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2025-05-08
- ARK identifier:
Terms of use
- Copyright holder:
- Korec et al
- Copyright date:
- 2025
- Rights statement:
- © The Author(s) 2025. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
- Licence:
- CC Attribution (CC BY)
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