Probabilistic analysis of reinforcement corrosion due to the combined action of carbonation and chloride ingress in concrete

Xingji Zhu, Goangseup Zi, Wonwoo Lee, Soye Kim, Jun g Sik Kong

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

This paper presents a comprehensive probabilistic model for the corrosion initiation of steel reinforcement due to the combined action of carbonation and chloride ingress in reinforced concrete structures. The coupled mechanism of the transport of carbon dioxide, chloride ions, heat and moisture is taken into account in this model. A minimum number of random variables were chosen from a sensitivity analysis to reduce the computational cost. The corrosion is assumed to be initiated when either the concentration of the free chloride ion exceeds its threshold value or the pH of the pore solution decreases to below 11. According to this model, the probability of the corrosion initiation in the above-mentioned combined action of carbonation and chloride ingress is almost two times higher than the case in which the two mechanisms are considered separately. The Kolmogorov-Smirnov test indicates that the time of corrosion initiation approximately follows a log-normal distribution in this combined action.

Original languageEnglish
Pages (from-to)667-680
Number of pages14
JournalConstruction and Building Materials
Volume124
DOIs
Publication statusPublished - 2016 Oct 15

Fingerprint

Carbonation
Chlorides
Reinforcement
Concretes
Corrosion
Ions
Steel
Normal distribution
Random variables
Concrete construction
Carbon Dioxide
Sensitivity analysis
Reinforced concrete
Carbon dioxide
Moisture
Costs

Keywords

  • Carbonation
  • Chloride ingress
  • Combined action
  • Corrosion
  • Reinforced concrete
  • Reliability

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

Probabilistic analysis of reinforcement corrosion due to the combined action of carbonation and chloride ingress in concrete. / Zhu, Xingji; Zi, Goangseup; Lee, Wonwoo; Kim, Soye; Kong, Jun g Sik.

In: Construction and Building Materials, Vol. 124, 15.10.2016, p. 667-680.

Research output: Contribution to journalArticle

@article{3a4cda544e944483ae7334c8efc4edf9,
title = "Probabilistic analysis of reinforcement corrosion due to the combined action of carbonation and chloride ingress in concrete",
abstract = "This paper presents a comprehensive probabilistic model for the corrosion initiation of steel reinforcement due to the combined action of carbonation and chloride ingress in reinforced concrete structures. The coupled mechanism of the transport of carbon dioxide, chloride ions, heat and moisture is taken into account in this model. A minimum number of random variables were chosen from a sensitivity analysis to reduce the computational cost. The corrosion is assumed to be initiated when either the concentration of the free chloride ion exceeds its threshold value or the pH of the pore solution decreases to below 11. According to this model, the probability of the corrosion initiation in the above-mentioned combined action of carbonation and chloride ingress is almost two times higher than the case in which the two mechanisms are considered separately. The Kolmogorov-Smirnov test indicates that the time of corrosion initiation approximately follows a log-normal distribution in this combined action.",
keywords = "Carbonation, Chloride ingress, Combined action, Corrosion, Reinforced concrete, Reliability",
author = "Xingji Zhu and Goangseup Zi and Wonwoo Lee and Soye Kim and Kong, {Jun g Sik}",
year = "2016",
month = "10",
day = "15",
doi = "10.1016/j.conbuildmat.2016.07.120",
language = "English",
volume = "124",
pages = "667--680",
journal = "Construction and Building Materials",
issn = "0950-0618",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Probabilistic analysis of reinforcement corrosion due to the combined action of carbonation and chloride ingress in concrete

AU - Zhu, Xingji

AU - Zi, Goangseup

AU - Lee, Wonwoo

AU - Kim, Soye

AU - Kong, Jun g Sik

PY - 2016/10/15

Y1 - 2016/10/15

N2 - This paper presents a comprehensive probabilistic model for the corrosion initiation of steel reinforcement due to the combined action of carbonation and chloride ingress in reinforced concrete structures. The coupled mechanism of the transport of carbon dioxide, chloride ions, heat and moisture is taken into account in this model. A minimum number of random variables were chosen from a sensitivity analysis to reduce the computational cost. The corrosion is assumed to be initiated when either the concentration of the free chloride ion exceeds its threshold value or the pH of the pore solution decreases to below 11. According to this model, the probability of the corrosion initiation in the above-mentioned combined action of carbonation and chloride ingress is almost two times higher than the case in which the two mechanisms are considered separately. The Kolmogorov-Smirnov test indicates that the time of corrosion initiation approximately follows a log-normal distribution in this combined action.

AB - This paper presents a comprehensive probabilistic model for the corrosion initiation of steel reinforcement due to the combined action of carbonation and chloride ingress in reinforced concrete structures. The coupled mechanism of the transport of carbon dioxide, chloride ions, heat and moisture is taken into account in this model. A minimum number of random variables were chosen from a sensitivity analysis to reduce the computational cost. The corrosion is assumed to be initiated when either the concentration of the free chloride ion exceeds its threshold value or the pH of the pore solution decreases to below 11. According to this model, the probability of the corrosion initiation in the above-mentioned combined action of carbonation and chloride ingress is almost two times higher than the case in which the two mechanisms are considered separately. The Kolmogorov-Smirnov test indicates that the time of corrosion initiation approximately follows a log-normal distribution in this combined action.

KW - Carbonation

KW - Chloride ingress

KW - Combined action

KW - Corrosion

KW - Reinforced concrete

KW - Reliability

UR - http://www.scopus.com/inward/record.url?scp=84982740644&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84982740644&partnerID=8YFLogxK

U2 - 10.1016/j.conbuildmat.2016.07.120

DO - 10.1016/j.conbuildmat.2016.07.120

M3 - Article

AN - SCOPUS:84982740644

VL - 124

SP - 667

EP - 680

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

ER -