Bonding Behavior of Textile Reinforced Concrete (TRC)-Confined Concrete and Reinforcement under Chloride Erosion Environment

Abstract

The improved effect of the bonding behavior of concrete and reinforcement is a critical indicator for estimating the validity of strengthening measures. The bonding behavior of unconfined or textile reinforced concrete (TRC)-confined concrete and a plain or deformed reinforcement was comparatively analyzed via the pull-out tests, and the influence of chloride wet-dry cycles also was considered on the bonding behavior. Moreover, the bonding behavior was further revealed from the view of energy. The study results indicated that the bonding failure of specimens with a deformed reinforcement was changed after TRC confinement, showing a certain ductile failure characteristic, and the integrity of the confined specimens was ensured at failure. The impact of chloride attack on the bonding behavior of concrete and a plain or deformed reinforcement was different under the unconfined or TRC-confined condition. The deterioration mechanism of the bonding behavior needs to be further investigated when the reinforcement is corroded seriously. The results from the energy analysis are consistent with the pull-out test results.

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Acknowledgements

Thanks for the support from Fundamental Research Funds for the Central Universities (2017XKQY053).

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Correspondence to Shiping Yin.

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Jing, L., Yin, S. & Lv, H. Bonding Behavior of Textile Reinforced Concrete (TRC)-Confined Concrete and Reinforcement under Chloride Erosion Environment. KSCE J Civ Eng 24, 826–834 (2020). https://doi.org/10.1007/s12205-020-0711-0

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Keywords

  • Textile-reinforced concrete
  • Bonding behavior
  • Pull-out test
  • Wet-dry cycle
  • Energy analysis