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 journalArticlepeer-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 languageEnglish
    Pages (from-to)327-340
    Number of pages14
    JournalMagazine of Concrete Research
    Volume71
    Issue number7
    DOIs
    Publication statusPublished - 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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