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A two-phased modelling approach for corrosion-induced concrete cracking and bond deterioration in reinforced concrete
https://orcid.org/0000-0002-3497-3615
https://orcid.org/0000-0001-9732-3858
https://orcid.org/0000-0002-5297-7652
Abstract Bond deterioration is one of the major consequences of reinforcement corrosion in reinforced concrete (RC) structures. In this paper, a two-phased numerical modelling approach is presented that aims to determine the constitutive behaviour (bond–slip) at the reinforcement-concrete interface at a certain corrosion level. The novelty of the approach is that it consists of a crack model and a bond model, and that the flow of corrosion products into the pores and corrosion-induced cracks as well as the effect of the bonded length and concrete cover are taken into account in the 2D crack model. The resulting expansion of corrosion products from the crack model is used as input in the 3D bond model. The combination of both models leads to a procedure that balances computational time and modelling detail. The model is validated on a substantial amount of experimental pull-out test results. A good agreement is obtained between the experimental data and the models for different corrosion levels in terms of crack width, crack pattern, corrosion-induced bond loss, and failure mode.
Highlights A model for corrosion-induced concrete cracking and bond deterioration is developed. The flow of corrosion products in pores and corrosion-induced cracks is incorporated. A novel approach includes the effect of confinement due to a different bond length. The crack model correctly represents the crack pattern and crack width. The bond model allows to simulate the shift in failure mode and bond strength.
A two-phased modelling approach for corrosion-induced concrete cracking and bond deterioration in reinforced concrete
https://orcid.org/0000-0002-3497-3615
https://orcid.org/0000-0001-9732-3858
https://orcid.org/0000-0002-5297-7652
Abstract Bond deterioration is one of the major consequences of reinforcement corrosion in reinforced concrete (RC) structures. In this paper, a two-phased numerical modelling approach is presented that aims to determine the constitutive behaviour (bond–slip) at the reinforcement-concrete interface at a certain corrosion level. The novelty of the approach is that it consists of a crack model and a bond model, and that the flow of corrosion products into the pores and corrosion-induced cracks as well as the effect of the bonded length and concrete cover are taken into account in the 2D crack model. The resulting expansion of corrosion products from the crack model is used as input in the 3D bond model. The combination of both models leads to a procedure that balances computational time and modelling detail. The model is validated on a substantial amount of experimental pull-out test results. A good agreement is obtained between the experimental data and the models for different corrosion levels in terms of crack width, crack pattern, corrosion-induced bond loss, and failure mode.
Highlights A model for corrosion-induced concrete cracking and bond deterioration is developed. The flow of corrosion products in pores and corrosion-induced cracks is incorporated. A novel approach includes the effect of confinement due to a different bond length. The crack model correctly represents the crack pattern and crack width. The bond model allows to simulate the shift in failure mode and bond strength.
A two-phased modelling approach for corrosion-induced concrete cracking and bond deterioration in reinforced concrete
https://orcid.org/0000-0002-3497-3615
https://orcid.org/0000-0001-9732-3858
https://orcid.org/0000-0002-5297-7652
Abstract Bond deterioration is one of the major consequences of reinforcement corrosion in reinforced concrete (RC) structures. In this paper, a two-phased numerical modelling approach is presented that aims to determine the constitutive behaviour (bond–slip) at the reinforcement-concrete interface at a certain corrosion level. The novelty of the approach is that it consists of a crack model and a bond model, and that the flow of corrosion products into the pores and corrosion-induced cracks as well as the effect of the bonded length and concrete cover are taken into account in the 2D crack model. The resulting expansion of corrosion products from the crack model is used as input in the 3D bond model. The combination of both models leads to a procedure that balances computational time and modelling detail. The model is validated on a substantial amount of experimental pull-out test results. A good agreement is obtained between the experimental data and the models for different corrosion levels in terms of crack width, crack pattern, corrosion-induced bond loss, and failure mode.
Highlights A model for corrosion-induced concrete cracking and bond deterioration is developed. The flow of corrosion products in pores and corrosion-induced cracks is incorporated. A novel approach includes the effect of confinement due to a different bond length. The crack model correctly represents the crack pattern and crack width. The bond model allows to simulate the shift in failure mode and bond strength.
A two-phased modelling approach for corrosion-induced concrete cracking and bond deterioration in reinforced concrete
Van Steen, C. (author) / Van Beirendonck, T. (author) / Vrijdaghs, R. (author) / Hendriks, M.A.N. (author) / Verstrynge, E. (author)
Engineering Structures ; 294
2023-07-15
Article (Journal)
Electronic Resource
English
Lattice modelling of corrosion induced cracking and bond in reinforced concrete
| Online Contents | 2011
| British Library Online Contents | 1999