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A platform for research: civil engineering, architecture and urbanism
A phase-field chemo-mechanical model for corrosion-induced cracking in reinforced concrete
https://orcid.org/0000-0002-3761-8790
https://orcid.org/0000-0001-5795-9587
https://orcid.org/0000-0003-2736-4050
https://orcid.org/0000-0002-1562-097X
Abstract We present a new mechanistic framework for corrosion-induced cracking in reinforced concrete that resolves the underlying chemo-mechanical processes. The framework combines, for the first time, (i) a model for reactive transport and precipitation of dissolved and ions in the concrete pore space, (ii) a precipitation eigenstrain model for the pressure caused by the accumulation of precipitates (rusts) under pore confinement conditions, (iii) a phase-field model calibrated for the quasi-brittle fracture behaviour of concrete, and (iv) a damage-dependent diffusivity tensor. Finite element model predictions show good agreement with experimental data from impressed current tests under natural-like corrosion current densities.
Graphical abstract Display Omitted
Highlights A new chemo-mechanical model for corrosion-induced cracking of concrete is proposed. Phase-field is used to attain robust fracture predictions and damage-transport coupling. Concrete fracture is found to be driven by constrained accumulation of rusts in the pore space. A very good agreement is attained with experimental data from natural-like corrosion current densities.
A phase-field chemo-mechanical model for corrosion-induced cracking in reinforced concrete
https://orcid.org/0000-0002-3761-8790
https://orcid.org/0000-0001-5795-9587
https://orcid.org/0000-0003-2736-4050
https://orcid.org/0000-0002-1562-097X
Abstract We present a new mechanistic framework for corrosion-induced cracking in reinforced concrete that resolves the underlying chemo-mechanical processes. The framework combines, for the first time, (i) a model for reactive transport and precipitation of dissolved and ions in the concrete pore space, (ii) a precipitation eigenstrain model for the pressure caused by the accumulation of precipitates (rusts) under pore confinement conditions, (iii) a phase-field model calibrated for the quasi-brittle fracture behaviour of concrete, and (iv) a damage-dependent diffusivity tensor. Finite element model predictions show good agreement with experimental data from impressed current tests under natural-like corrosion current densities.
Graphical abstract Display Omitted
Highlights A new chemo-mechanical model for corrosion-induced cracking of concrete is proposed. Phase-field is used to attain robust fracture predictions and damage-transport coupling. Concrete fracture is found to be driven by constrained accumulation of rusts in the pore space. A very good agreement is attained with experimental data from natural-like corrosion current densities.
A phase-field chemo-mechanical model for corrosion-induced cracking in reinforced concrete
https://orcid.org/0000-0002-3761-8790
https://orcid.org/0000-0001-5795-9587
https://orcid.org/0000-0003-2736-4050
https://orcid.org/0000-0002-1562-097X
Abstract We present a new mechanistic framework for corrosion-induced cracking in reinforced concrete that resolves the underlying chemo-mechanical processes. The framework combines, for the first time, (i) a model for reactive transport and precipitation of dissolved and ions in the concrete pore space, (ii) a precipitation eigenstrain model for the pressure caused by the accumulation of precipitates (rusts) under pore confinement conditions, (iii) a phase-field model calibrated for the quasi-brittle fracture behaviour of concrete, and (iv) a damage-dependent diffusivity tensor. Finite element model predictions show good agreement with experimental data from impressed current tests under natural-like corrosion current densities.
Graphical abstract Display Omitted
Highlights A new chemo-mechanical model for corrosion-induced cracking of concrete is proposed. Phase-field is used to attain robust fracture predictions and damage-transport coupling. Concrete fracture is found to be driven by constrained accumulation of rusts in the pore space. A very good agreement is attained with experimental data from natural-like corrosion current densities.
A phase-field chemo-mechanical model for corrosion-induced cracking in reinforced concrete
Korec, Evžen (author) / Jirásek, Milan (author) / Wong, Hong S. (author) / Martínez-Pañeda, Emilio (author)
2023-05-25
Article (Journal)
Electronic Resource
English
| UB Braunschweig | 2015
| TIBKAT | 2015
Corrosion Induced Cracking of Reinforced Concrete
| Springer Verlag | 2014