Numerical Simulation of Chloride-Induced Corrosion Initiation in Reinforced Concrete Structures with Cracks

Leung, Christopher Kin Ying; Hou, Dongwei

doi:10.1061/(asce)mt.1943-5533.0001057

Cited by 15 publications

(16 citation statements)

References 9 publications

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“…The literature survey described above shows that most of existing numerical transport models applied for concrete with cracks [13][14][15][16][17][18] did not consider the interaction of ionic species involved in the concrete pore solution. It has been shown that the models with multi-species coupling controlled by Poisson's equation, which represents the true electrochemistry law for determining electrostatic potential in the transport medium, can provide more accurate results than those with only single ionic species or those consider multi-species in the pore solution but use the assumption of electro-neutrality condition [28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 98%

“…Hence, with respect to the abovementioned issues, as well as the fast advance of computer science and progress of computational mathematics, today's researchers tend to adopt the numerical technique to gain a better understanding of the mechanism of chloride transport in cracked concrete [13][14][15][16][17][18]. For example, Leung and Hou [13] developed a 2-D single-phase concrete model with cracks for investigating the chloride-induced reinforcement corrosion.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Leung and Hou [13] developed a 2-D single-phase concrete model with cracks for investigating the chloride-induced reinforcement corrosion. Marsavina cracks on the chloride penetration in concrete using a 3-D finite element analysis model.…”

Section: Introductionmentioning

confidence: 99%

“…The locations of the cracks are assumed in the middle of the geometry, which represents the concrete, that had cracks but its surface has been repaired and thus the cracks inside of the concrete remain. Additionally, in consideration of that all existing cracking models only focus on a single crack and any adjacent cracks are probably assumed to be sufficiently far away from each other [13][14][15][16][17][18], the interactive effect caused by multiple cracks is also added into the second category of the models. Note that all models used in the present study are two-dimensional.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A numerical study on chloride migration in cracked concrete using multi-component ionic transport models

Liu

Yang

Xia

et al. 2015

Computational Materials Science

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A numerical study on chloride migration in cracked concrete using multi-component ionic transport models

Liu

Yang

Xia

et al. 2015

Computational Materials Science

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“…Some studies have addressed the loss of cross-sectional area of reinforcing rebars (e.g., [17][18][19]). Anderson-Wile et al [20] conducted a comprehensive investigation to study the corrosion of some metals such as stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Corroded Reinforced SCC-RAP Members with CFRP

Abdel-Mohti

Shen

2016

Fibers

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Corrosion is one of the major problems affecting the durability of reinforced concrete (RC) structures. This paper investigates the effect of rebar corrosion on the performance of reinforced self-consolidating concrete (SCC) members and the effectiveness of repair. A control RC member, which has no corrosion problem, was prepared to compare against corroded and repaired members. A number of reinforced concrete members having up to 50% corrosion level were constructed and tested to study the effect of corrosion on the structural performance of RC members. The beams with corrosion problem were repaired using carbon fiber reinforced polymer (CFRP) sheets and U-wraps. All of the beams constructed, which are either not repaired or repaired, in this study were tested under two static line loads until failure. The effect of corrosion and effectiveness of repairing technique were assessed by evaluating the performance in terms of load carrying capacity, deflection, and ductility. Test results revealed that as the corrosion level increases, the loss in load carrying capacity increases. Repairing using CFRP improved the performance of corroded members. For example, when 50% corrosion level was achieved, the beam lost approximately 57% of its load carrying capacity, but when it was repaired, it recovered about 42% of its load carrying capacity.

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Probabilistic service life prediction of cracked concrete using numerical and engineering models

L. Schultheiß,

Patel,

Dehn

2023

ce papers

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Chloride ingress induced depassivation of reinforcing steel leading to corrosion is a major durability concern for concrete structures. The influence of the presence of cracks commonly occurring in concrete structures on chloride ingress should be accounted to improve the accuracy of service life predictions. This study investigates the depassivation probability of the reinforcement in both cracked and uncracked concrete using both analytical and 1D numerical models. The probabilistic service life prediction is realized using the Monte Carlo simulation to incorporate the uncertainty and variability in the input variables. For uncracked concrete the result of the numerical model agreed well with the fib chloride model. For cracked concrete, the numerical simulation suggests that the optimal engineering approach to account for cracks in a service life analysis is the adaptation of crack depth. Although, the approach could lead to an overestimation of chloride concentration because the 1D numerical simulation did not consider lateral diffusion in cracked concrete.

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Numerical Simulation of Chloride-Induced Corrosion Initiation in Reinforced Concrete Structures with Cracks

Cited by 15 publications

References 9 publications

A numerical study on chloride migration in cracked concrete using multi-component ionic transport models

A numerical study on chloride migration in cracked concrete using multi-component ionic transport models

Strengthening of Corroded Reinforced SCC-RAP Members with CFRP

Probabilistic service life prediction of cracked concrete using numerical and engineering models

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