RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00383398" target="_blank" >RIV/68407700:21110/25:00383398 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1038/s41529-025-00596-5" target="_blank" >https://doi.org/10.1038/s41529-025-00596-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41529-025-00596-5" target="_blank" >10.1038/s41529-025-00596-5</a>

Result language
angličtina
Original language name
RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking
Original language description
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.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering

Project
<a href="/en/project/EH22_008%2F0004590" target="_blank" >EH22_008/0004590: Robotics and advanced industrial production</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)