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

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

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
Publication status	Published - 2019 Apr 1

Bibliographical note

Funding Information:
This work was supported by grants from the Regional Development Research Program funded by the Ministry of Land, Infrastructure and Transport of the Korean government (17RDRP-B134576) and the National Natural Science Foundation of China (51678208). Xingji Zhu is grateful for the support of the Natural Science Foundation of Shandong Province (ZR2018BEE044).

Keywords

carbonation
cement
cementitious materials
durability-related properties

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

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10.1680/jmacr.18.00140

Cite this

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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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author = "Xingji Zhu and Goangseup Zi and Lianfang Sun and Ilhwan You",

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AU - Zi, Goangseup

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AU - You, Ilhwan

N1 - Funding Information: This work was supported by grants from the Regional Development Research Program funded by the Ministry of Land, Infrastructure and Transport of the Korean government (17RDRP-B134576) and the National Natural Science Foundation of China (51678208). Xingji Zhu is grateful for the support of the Natural Science Foundation of Shandong Province (ZR2018BEE044).

PY - 2019/4/1

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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.

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KW - cementitious materials

KW - durability-related properties

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

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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