Predicting the corrosion rate of steel in cathodically protected concrete using potential shift

Goyal, Arpit; Pouya, Homayoon Sadeghi; Ganjian, Eshmaiel; Olubanwo, Adegoke; Khorami, Morteza

doi:10.1016/j.conbuildmat.2018.10.153

Cited by 36 publications

(15 citation statements)

References 18 publications

(23 reference statements)

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“…Hence, Butler Volmer equation was improved as given in eq 3, which can be used for CP performance assessment. The detailed analysis of the method is given in author's previous work (Goyal et al, 2019).…”

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confidence: 99%

“…Out of various preventive techniques, cathodic protection (CP) technique has been shown to be highly effective to prevent corrosion of steel in chloride contaminated concrete (Goyal et al, 2018). The technique is based upon delivering required DC current to the steel to be protected to shift its potential to negative direction such that corrosion rate is either significantly reduced or steel reaches its passivation (Goyal et al, 2019;Marcassoli et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the effectiveness of Butler-Volmer equation to predict corrosion rate in cathodically protected structures

Goyal¹,

Pouya²,

Ganjian³

2019

Sustainable Construction Materials and Technologies (SCMT)

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Various reinforced concrete structure around the world, such as bridges are exposed to aggressive chloride environment, hence, start to corrode after short service period. The main reason for the deterioration of these structures is corrosion of steel reinforcement due to chlorides. Poor quality concrete and low cover are contributory factors. The cost of repairing or replacing the deteriorated structure has become the major concern for the asset owners. One of the most successful and substantiated techniques of protecting structure from corrosion is cathodic protection (CP). The BS EN ISO 12696 performance criteria followed for monitoring CP efficiency is evolved from the experimental analysis and may not be always correct. This paper suggests an improved method for monitoring corrosion rate through Butler Volmer equation using the polarization data. This method has been applied to one year CP monitoring data from a viaduct site. It was observed that corrosion rate was reducing with time, showing the effectiveness of CP to protect the steel in structure. Prediction of corrosion rate of the steel from potential shift forms the basis for the improved CP performance criterion for reinforced concrete structures. Information about the actual corrosion rate would be beneficial to predict the true state of steel reinforcement and accordingly apply a suitable repair technique to extend the service life of RC structures.

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confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of the effectiveness of Butler-Volmer equation to predict corrosion rate in cathodically protected structures

Goyal¹,

Pouya²,

Ganjian³

2019

Sustainable Construction Materials and Technologies (SCMT)

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“…How to optimize the forced current cathodic protection effect? The parameters of the auxiliary anode system are critical in the grounding grid [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

The Optimization Algorithm of the Forced Current Cathodic Protection Base on Simulated Annealing

et al. 2019

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The grounding grid of a substation is important for the safety of substation equipment. Especially to address the difficulty of parameter design in the auxiliary anode system of a grounding grid, an algorithm is proposed that is an optimization algorithm for the auxiliary anode system of a grounding grid based on improved simulated annealing. The mathematical model of the auxiliary anode system is inferred from the mathematical model of cathodic protection. On that basis, the parameters of the finite element model are optimized with the improved simulated annealing algorithm, thereby the auxiliary anode system of a grounding grid with optimized parameters is structured. Then the algorithm is proven as valid through experiments. The precision of the optimized parameters is improved by about 1.55% with respect to the Variable Metric Method and the Genetic Algorithm, so it can provide a basis for parameter design in the auxiliary anode system of a grounding grid.

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“…Choice of the most suitable protection method depends on many factors as cost, nature of the structure, and the required level of protection. Surface coatings of steel and concrete surfaces and concrete admixtures used reduce corrosion rate are considered the most widely used direct protection techniques used [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Wrapping Reinforced Concrete Surface with FRP Sheets on Corrosion Resistance

Masoud¹,

Ebid²

2019

IJEAT

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Fiber Reinforced Plastics (FRP) sheets are widely used now in the field of repair and strengthening of reinforced concrete structures. The presence of FRP sheets on reinforced concrete surface for repair and strengthening provides some level of protection for reinforced concrete against corrosion. This kind of protection can be considered as an indirect protection because the main purpose is not for protection but for repair and strengthening. Two fibers/resin systems were considered in the experimental program; the first is glass/polyester system with one, two, and three layers of glass fibers and the second is carbon/polyester system with one layer of carbon fibers. Effectiveness of the indirect method was evaluated through comparing them with the well-known direct protection methods (coating of steel surface, coating of concrete surface, and by using concrete admixtures). A total of 16 accelerated corrosion cells were tested in order to measure the total mass loss of the reinforcing steel bars which expresses the effectiveness of all direct and indirect protection methods

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Predicting the corrosion rate of steel in cathodically protected concrete using potential shift

Cited by 36 publications

References 18 publications

Assessment of the effectiveness of Butler-Volmer equation to predict corrosion rate in cathodically protected structures

Assessment of the effectiveness of Butler-Volmer equation to predict corrosion rate in cathodically protected structures

The Optimization Algorithm of the Forced Current Cathodic Protection Base on Simulated Annealing

Effect of Wrapping Reinforced Concrete Surface with FRP Sheets on Corrosion Resistance

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