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Corrosion-Fatigue Life Prediction Modeling for RC Structures under Coupled Carbonation and Repeated Loading

Author

Listed:
  • Chenxing Cui

    (School of Civil Engineering, Central South University, Changsha 410075, China
    National Engineering Laboratory for High Speed Railway Construction, Changsha 410075, China)

  • Li Song

    (School of Civil Engineering, Central South University, Changsha 410075, China
    National Engineering Laboratory for High Speed Railway Construction, Changsha 410075, China)

  • Jinliang Liu

    (School of Civil Engineering, Central South University, Changsha 410075, China
    National Engineering Laboratory for High Speed Railway Construction, Changsha 410075, China)

  • Zhiwu Yu

    (School of Civil Engineering, Central South University, Changsha 410075, China
    National Engineering Laboratory for High Speed Railway Construction, Changsha 410075, China)

Abstract

The coupled action of concrete carbonation and repeated loading strongly influences the safety of reinforced concrete (RC) structures and substantially reduces service life. A novel corrosion-fatigue life prediction model for RC structures under coupled carbonation and repeated loading was developed. The effect of fatigue damage on concrete carbonation and carbonation-induced corrosion rate was considered, and the acceleration of fatigue damage accumulation due to reinforcement corrosion was considered in this approach. The proposed corrosion-fatigue life prediction model was illustrated by a 6 m-span RC slab in a simply supported slab bridge for the highway, and the effects of traffic frequency, overloading, carbonation environment grade, and environmental temperature and relative humidity on corrosion-fatigue life were discussed. The results indicate that the proposed model can predict the corrosion-fatigue life of RC structures simply and conveniently. Traffic frequency, overloading, carbonation environment grade, and environmental temperature and relative humidity can decrease the corrosion-fatigue life of the RC slab by up to 66.86%, 58.90%, 77.45%, and 44.95%, respectively. The research is expected to provide a framework for the corrosion-fatigue life prediction of RC structures under coupled carbonation and repeated loading.

Suggested Citation

  • Chenxing Cui & Li Song & Jinliang Liu & Zhiwu Yu, 2021. "Corrosion-Fatigue Life Prediction Modeling for RC Structures under Coupled Carbonation and Repeated Loading," Mathematics, MDPI, vol. 9(24), pages 1-18, December.
    • Handle: RePEc:gam:jmathe:v:9:y:2021:i:24:p:3296-:d:705459
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    References listed on IDEAS

    as
    1. Hyung-Min Lee & Han-Seung Lee & Sang-ho Min & Seungmin Lim & Jitendra Kumar Singh, 2018. "Carbonation-Induced Corrosion Initiation Probability of Rebars in Concrete With/Without Finishing Materials," Sustainability, MDPI, vol. 10(10), pages 1-15, October.
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    Cited by:

    1. Chenxing Cui & Fan Feng & Xiandong Meng & Xiang Liu, 2022. "Fatigue Life Assessment of Intercity Track Viaduct Based on Vehicle–Bridge Coupled System," Mathematics, MDPI, vol. 10(10), pages 1-18, May.

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