Korec, Evžen and Grassl, Peter and Jirásek, Milan and Wong, Hong S. and Martínez-Pañeda, Emilio (2025) RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking. npj Materials Degradation, 9 (1): 44. ISSN 2397-2106
AI Summary:
The collapse of reinforced autoclaved aerated concrete (RAAC) panels has been studied computationally for the first time. The study reveals that RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking.AI Topics:
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.
Korec, Evžen
Author
Korec, Evžen and Grassl, Peter and Jirásek, Milan and Wong, Hong S. and Martínez-Pañeda, Emilio (2025) RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking. npj Materials Degradation, 9 (1): 44. ISSN 2397-2106
See full publications listGrassl, Peter
Author
Korec, Evžen and Grassl, Peter and Jirásek, Milan and Wong, Hong S. and Martínez-Pañeda, Emilio (2025) RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking. npj Materials Degradation, 9 (1): 44. ISSN 2397-2106
Zhou, Chao and Marlot, Antoine and Grassl, Peter (2024) CDPM2F: a damage-plasticity approach for modelling the failure of strain hardening cementitious composites. Engineering Fracture Mechanics, 308: 110325. ISSN 0013-7944
See full publications listJirásek, Milan
Author
Korec, Evžen and Grassl, Peter and Jirásek, Milan and Wong, Hong S. and Martínez-Pañeda, Emilio (2025) RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking. npj Materials Degradation, 9 (1): 44. ISSN 2397-2106
See full publications listWong, Hong S.
Author
Korec, Evžen and Grassl, Peter and Jirásek, Milan and Wong, Hong S. and Martínez-Pañeda, Emilio (2025) RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking. npj Materials Degradation, 9 (1): 44. ISSN 2397-2106
See full publications listMartínez-Pañeda, Emilio
Author
Korec, Evžen and Grassl, Peter and Jirásek, Milan and Wong, Hong S. and Martínez-Pañeda, Emilio (2025) RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking. npj Materials Degradation, 9 (1): 44. ISSN 2397-2106
See full publications listAvailable under License Creative Commons Attribution.
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