A probabilistic threshold for the onset of carbonation-induced corrosion

Duprat, Frédéric; Vu, Ngoc Tru

doi:10.1080/19648189.2013.791071

Cited by 6 publications

(8 citation statements)

References 11 publications

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“…The experimental investigation aimed to analyze the conditions of effective onset of carbonation‐induced corrosion for small steel rebar embedded in concrete at controlled cover depth . For the sake of clarity, the main features are recalled here.…”

Section: Experimental Investigationmentioning

confidence: 99%

Section: Experimental Investigationmentioning

confidence: 99%

“…Unfortunately, its measurement is rather complex and laborious, and it thus be performed only under laboratory conditions. Derived from the concepts of probability of detection and probability of false alarm an approach was proposed assessing the probabilities of right or wrong alarm to establish a correlation between the effective state of corrosion, measured by the iron mass loss, the polarization resistance

R_{p}

and/or corrosion potential

E_{corr}

. Thanks to this approach, threshold values for these electrochemical properties were suggested so that the probability of a right alarm (PRA) was maximum, allowing the effective onset of corrosion to be identified with a minimum probability of a wrong alarm (PWA).…”

Section: Distinction Between Active and Passive Corrosion Statesmentioning

confidence: 99%

“…The latter condition can be seen as the effective onset event provided that iron mass loss is cumulatively determined and not expressed as a corrosion rate. The results obtained in Duprat and Vu were completed in the present study by adding the second set of data identified in the cited study by a principal component analysis. They are reported in Table .…”

Section: Distinction Between Active and Passive Corrosion Statesmentioning

confidence: 99%

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Quantification of Tafel coefficients according to passive/active state of steel carbonation‐induced corrosion in concrete

Duprat

Larrard

2019

Materials & Corrosion

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Statistical quantification of Tafel coefficients is investigated in this study for isolated steel rebar embedded in concrete. The survey is supported by a wide experimental campaign carried out earlier to characterize the passive and active states of carbonation‐induced corrosion of steel. Electrochemical measurements (polarization resistance, corrosion potential, Tafel coefficients) and gravimetric estimations of iron loss were regularly conducted over 417 days on 108 concrete specimens. The statistical analysis reveals that the mean value of Tafel coefficients, both cathodic and anodic, is higher under active corrosion, which seems to contradict the general tendency found for chloride‐induced corrosion, while their coefficient of variation is smaller. The statistical inference was based on the first step of distributions fitting the experimental data and then on the second step of goodness‐of‐fit tests. The most suitable of the distributions proposed were the Burr, Rayleigh, and Gamma distributions. A similar analysis was made for the corrosion potential and polarization resistance. The findings of the study will be valuable for probabilistic approaches to corrosion where probabilistic distributions are required.

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Section: Experimental Investigationmentioning

confidence: 99%

Section: Experimental Investigationmentioning

confidence: 99%

R_{p}

and/or corrosion potential

E_{corr}

Section: Distinction Between Active and Passive Corrosion Statesmentioning

confidence: 99%

Section: Distinction Between Active and Passive Corrosion Statesmentioning

confidence: 99%

See 2 more Smart Citations

Quantification of Tafel coefficients according to passive/active state of steel carbonation‐induced corrosion in concrete

Duprat

Larrard

2019

Materials & Corrosion

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“…Corrosion modeling of reinforcing steel is one of the methods that has been gaining increasing interest in the last two decades [4,[26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41]. Modeling the corrosion process will allow the assessment of the current state of the existing RCS, improve the stability and help to extend the service life of RCS.…”

Section: Prediction Of the Service Life Of Rcsmentioning

confidence: 99%

Electrochemical Sensors for Monitoring the Corrosion Conditions of Reinforced Concrete Structures: A Review

Figueira¹

2017

Applied Sciences

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Several methods for corrosion monitoring of reinforced concrete structures (RCS) have been proposed in the last few decades. These systems may be used either in new, existing or repaired structures. The corrosion monitoring can be performed by different methodologies. These may or may not be destructive, use different degrees of complexity and cost, and provide information on the progression and kinetics of the corrosion phenomena. The destructive methods are limited to sampling. Therefore, these may not be representative of the whole structure, which is extremely important in RCS with large heterogeneities both in terms of materials used and in terms of the exposure environment. Within this context, non-destructive methods have been widely developed, which are intended to provide quick information about the entire structure. Ideally, these systems should be able to detect the corrosion state of the steel inside the concrete, the main causes of corrosion and the evolution of corrosion phenomena over time. This manuscript reviews and summarizes the actual state of the art and the main achievements in the field of electrochemical sensors based on non-destructive methods for corrosion monitoring of RCS in the last few years. The challenges and perspectives in this field will also be discussed.

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Bayesian-Network-Based Evaluation for Corrosion State of Reinforcements Embedded in Concrete by Multiple Electrochemical Indicators

Guo,

Fan,

Feng

et al. 2024

J Nondestruct Eval

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A probabilistic threshold for the onset of carbonation-induced corrosion

Cited by 6 publications

References 11 publications

Quantification of Tafel coefficients according to passive/active state of steel carbonation‐induced corrosion in concrete

Quantification of Tafel coefficients according to passive/active state of steel carbonation‐induced corrosion in concrete

Electrochemical Sensors for Monitoring the Corrosion Conditions of Reinforced Concrete Structures: A Review

Bayesian-Network-Based Evaluation for Corrosion State of Reinforcements Embedded in Concrete by Multiple Electrochemical Indicators

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