Modeling the influence of pitting corrosion on the mechanical properties of steel reinforcement

Andisheh, Kaveh; Scott, Allan; Palermo, Alessandro

doi:10.1002/maco.201508795

Cited by 21 publications

(23 citation statements)

References 23 publications

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“…Pitting corrosion affects the load‐carrying capacity of a structure and strongly reduces its deformation capacity, as was experimentally verified by several studies 2,6–8 . This effect is mainly caused by strain localisation due to cross‐section loss.…”

Section: Introductionmentioning

confidence: 70%

“…Pitting corrosion affects the load-carrying capacity of a structure and strongly reduces its deformation capacity, as was experimentally verified by several studies. 2,[6][7][8] This effect is mainly caused by strain localisation due to cross-section loss. It is particularly relevant for statically indeterminate structures requiring moment redistributions (e.g., multi-span continuous girders) or in the case of deformation-dependent loading (e.g., earth pressure action on cantilever retaining walls).…”

Section: Introductionmentioning

confidence: 99%

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Corroded Tension Chord Model: Load‐deformation behavior of structures with locally corroded reinforcement

Haefliger

Kaufmann

2021

Structural Concrete

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Localised corrosion may considerably impair the load‐bearing and deformation capacity of reinforced concrete structures. The Corroded Tension Chord Model allows investigating the related effects. The model combines the effects of tension stiffening and strain localisation due to a local cross‐section loss to calculate the load‐deformation behaviour of tension members and entire structural elements containing locally corroded reinforcing bars on a sound mechanical basis. Based on simple equilibrium considerations, the critical loss of cross‐sectional area is introduced, beyond which most of a reinforcing bar's ductility or a structure's deformation capacity, respectively, is lost. For conventional European reinforcing steel, even small cross‐section losses may be sufficient to impair ductility drastically. Illustrative calculations on structural elements with various spatial corrosion distributions but identical mean cross‐section loss reveal that the load‐deformation behaviour strongly depends on the specific corrosion parameters: Structures with few heavily corroded reinforcing bars seem to be less critical regarding strength and deformation capacity than structures with many slightly corroded reinforcing bars.

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Section: Introductionmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Corroded Tension Chord Model: Load‐deformation behavior of structures with locally corroded reinforcement

Haefliger

Kaufmann

2021

Structural Concrete

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“…It rarely accounts for the most severe location of a corrosion pit. It has been shown that the minimum cross section of a local corrosion pit is the most critical site for fatigue crack initiation, propagation, and final fracture due to stress concentration and cyclic fatigue loads [19][20][21]. As a result, the average treatment can introduce additional uncertainty into fatigue life prediction.…”

Section: Introductionmentioning

confidence: 99%

Bayesian Fatigue Life Prediction of Corroded Steel Reinforcing Bars

Wang

Chen

Diao

et al. 2021

Advances in Civil Engineering

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This paper presents a general method for fatigue life prediction of corroded steel reinforcing bars. A fatigue testing on standard specimens with pitting corrosion is carried out to obtain corrosion fatigue data. The maximum corrosion degree (MCD), characterizing the most severe site of the corrosion pit, is identified to have a log-linear relationship with the fatigue life. A fatigue life model incorporating the MCD and the stress range for corroded steel reinforcing bars is proposed. The model parameters are identified using the testing data, and the model is considered as the baseline model. To utilize the proposed model for life prediction of corroded steel reinforcing bars with different geometries and working conditions, the Bayesian method is employed to update the baseline model. The effectiveness of the overall method is demonstrated using independent datasets of realistic steel reinforcing bars.

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“…In addition, the transport mechanism of chloride ions through cement‐based materials has been fully studied . Therefore, it is possible to predict the initial time for the depassivation of steel rebars caused only by chloride ingress …”

Section: Introductionmentioning

confidence: 99%

“…[4] Therefore, it is possible to predict the initial time for the depassivation of steel rebars caused only by chloride ingress. [3,5] For most reinforced concrete buildings, the carbonation process of concrete is inevitable [6][7][8] . And it leads to two major changes in the chemical environment of concrete pore solutions.…”

Section: Introductionmentioning

confidence: 99%

The roles carbonate and bicarbonate ions play on pre‐passive HRB400 rebars in simulated pore solutions of deteriorating concrete

Shang

Meng

et al. 2018

Materials & Corrosion

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To evaluate the corrosion behavior of HRB400 rebars during the aging process of concrete, corresponding simulated concrete pore solutions were proposed. Using electrochemical measurements and XPS analysis, the depassivation conditions, properties of the pre‐passive films, and rebars corrosion rate were discussed. The effects of carbonate and bicarbonate ions, pH and chloride on the corrosion behavior of pre‐passive HRB400 rebars were investigated. Results show that the influence of carbonate and bicarbonate ions on the pre‐passive HRB400 rebars is reversed before and after its depassivation: before depassivation, carbonate and bicarbonate ions are detrimental to the stability of passive film, but beneficial after depassivation.

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Modeling the influence of pitting corrosion on the mechanical properties of steel reinforcement

Cited by 21 publications

References 23 publications

Corroded Tension Chord Model: Load‐deformation behavior of structures with locally corroded reinforcement

Corroded Tension Chord Model: Load‐deformation behavior of structures with locally corroded reinforcement

Bayesian Fatigue Life Prediction of Corroded Steel Reinforcing Bars

The roles carbonate and bicarbonate ions play on pre‐passive HRB400 rebars in simulated pore solutions of deteriorating concrete

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