### Abstract

Language | English |
---|---|

Pages | 1-10 |

Number of pages | 10 |

Journal | Magazine of Concrete Research |

Volume | 70 |

Issue number | 1 |

Early online date | 4 Dec 2017 |

DOIs | |

State | Published - 1 Jan 2018 |

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### Keywords

- durability
- fracture mechanics
- concrete cracking
- corrosion model

### Cite this

*Magazine of Concrete Research*,

*70*(1), 1-10. DOI: 10.1680/jmacr.17.00153

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*Magazine of Concrete Research*, vol. 70, no. 1, pp. 1-10. DOI: 10.1680/jmacr.17.00153

**Analytical model for non-uniform corrosion-induced concrete cracking.** / Yang, Shangtong; Li, Kefei ; Li, Chun-Qing.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Analytical model for non-uniform corrosion-induced concrete cracking

AU - Yang,Shangtong

AU - Li,Kefei

AU - Li,Chun-Qing

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Corrosion-induced concrete cracking is one of the major deterioration mechanisms for reinforced concrete structures. Evidently, the corrosion process is not uniform along the circumference of the reinforcement. To model the stress distribution in concrete and determine the initiation of concrete cracking, a realistic non-uniform corrosion model needs to be developed. In this paper, a time-dependent corrosion model, producing non-uniform expansion to concrete, is first established. The stresses in concrete are then formulated through the employment of complex functions. The time to initiation of concrete cracking is determined and related to a number of material, geometric and corrosion parameters. The derived analytical model is verified by comparing the results with those from experimental tests in literature. It can be concluded that this model is one of very few analytical models that can determine the stresses in concrete caused by non-uniform corrosion of reinforcement in concrete.

AB - Corrosion-induced concrete cracking is one of the major deterioration mechanisms for reinforced concrete structures. Evidently, the corrosion process is not uniform along the circumference of the reinforcement. To model the stress distribution in concrete and determine the initiation of concrete cracking, a realistic non-uniform corrosion model needs to be developed. In this paper, a time-dependent corrosion model, producing non-uniform expansion to concrete, is first established. The stresses in concrete are then formulated through the employment of complex functions. The time to initiation of concrete cracking is determined and related to a number of material, geometric and corrosion parameters. The derived analytical model is verified by comparing the results with those from experimental tests in literature. It can be concluded that this model is one of very few analytical models that can determine the stresses in concrete caused by non-uniform corrosion of reinforcement in concrete.

KW - durability

KW - fracture mechanics

KW - concrete cracking

KW - corrosion model

UR - http://www.icevirtuallibrary.com/loi/jmacr

U2 - 10.1680/jmacr.17.00153

DO - 10.1680/jmacr.17.00153

M3 - Article

VL - 70

SP - 1

EP - 10

JO - Magazine of Concrete Research

T2 - Magazine of Concrete Research

JF - Magazine of Concrete Research

SN - 0024-9831

IS - 1

ER -