A simplified probabilistic model for the combined action of carbonation and chloride ingress

Xingji Zhu; Goangseup Zi; Lianfang Sun; Ilhwan You

doi:10.1680/jmacr.18.00140

A simplified probabilistic model for the combined action of carbonation and chloride ingress

Xingji Zhu
, Goangseup Zi^*
, Lianfang Sun
, Ilhwan You

^*Corresponding author for this work

Department of Rural Construction Engineering

Harbin Institute of Technology
Korea University
China University of Petroleum (East China)

Research output: Contribution to journal › Journal article › peer-review

10 Scopus citations

Abstract

This paper presents an improved numerical model for the reliability analysis of corrosion initiation due to the combined action of carbonation and chloride ingress. The coupled mechanism of carbon dioxide, chloride ions, heat and moisture is considered in the model. The probability of corrosion initiation is evaluated by means of a single limit state function in which the critical concentration of chloride ions depends on the degree of carbonation. In addition, the coupled diffusion coefficients are interpolated linearly depending on the degree of carbonation in order to simplify the structure of the model without compromising accuracy.

Original language	English
Pages (from-to)	327-340
Number of pages	14
Journal	Magazine of Concrete Research
Volume	71
Issue number	7
DOIs	https://doi.org/10.1680/jmacr.18.00140
State	Published - 2019.04.1

Keywords

carbonation
cement
cementitious materials
durability-related properties

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abstract = "This paper presents an improved numerical model for the reliability analysis of corrosion initiation due to the combined action of carbonation and chloride ingress. The coupled mechanism of carbon dioxide, chloride ions, heat and moisture is considered in the model. The probability of corrosion initiation is evaluated by means of a single limit state function in which the critical concentration of chloride ions depends on the degree of carbonation. In addition, the coupled diffusion coefficients are interpolated linearly depending on the degree of carbonation in order to simplify the structure of the model without compromising accuracy.",

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AU - Zhu, Xingji

AU - Zi, Goangseup

AU - Sun, Lianfang

AU - You, Ilhwan

PY - 2019/4/1

Y1 - 2019/4/1

N2 - This paper presents an improved numerical model for the reliability analysis of corrosion initiation due to the combined action of carbonation and chloride ingress. The coupled mechanism of carbon dioxide, chloride ions, heat and moisture is considered in the model. The probability of corrosion initiation is evaluated by means of a single limit state function in which the critical concentration of chloride ions depends on the degree of carbonation. In addition, the coupled diffusion coefficients are interpolated linearly depending on the degree of carbonation in order to simplify the structure of the model without compromising accuracy.

AB - This paper presents an improved numerical model for the reliability analysis of corrosion initiation due to the combined action of carbonation and chloride ingress. The coupled mechanism of carbon dioxide, chloride ions, heat and moisture is considered in the model. The probability of corrosion initiation is evaluated by means of a single limit state function in which the critical concentration of chloride ions depends on the degree of carbonation. In addition, the coupled diffusion coefficients are interpolated linearly depending on the degree of carbonation in order to simplify the structure of the model without compromising accuracy.

KW - carbonation

KW - cement

KW - cementitious materials

KW - durability-related properties

UR - https://www.scopus.com/pages/publications/85062844774

U2 - 10.1680/jmacr.18.00140

DO - 10.1680/jmacr.18.00140

M3 - Journal article

AN - SCOPUS:85062844774

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SP - 327

EP - 340

JO - Magazine of Concrete Research

JF - Magazine of Concrete Research

IS - 7

ER -

A simplified probabilistic model for the combined action of carbonation and chloride ingress

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Keywords

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