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Repair of Fire-Damaged Reinforced Concrete Flexural Members: A Review

Author

Listed:
  • Wenxian Ma

    (College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Chunxiang Yin

    (College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Jun Zhou

    (College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Lu Wang

    (College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China)

Abstract

The mechanical properties of both concrete and steel reinforcement, and the load-bearing capacity of reinforced concrete (RC) structures are well known to be temperature-sensitive, as demonstrated by the severe damage that major fires cause in buildings, followed—in extreme cases—by their collapse. Since in most cases RC structures survive a fire, retrofitting fire-damaged RC members is a hot subject today. In this paper, after a recall on the performance of RC beams and slabs in fire, different repair techniques are considered, among them externally bonded reinforcement, near surface-mounted fiber-reinforced polymers (FRP), bolted side plating, jacketing with high- and ultra-high performance concretes or mortars, and damaged-concrete replacement. Last but not least, the design equations aimed at evaluating the residual load-bearing capacity after repairing are also presented and discussed.

Suggested Citation

  • Wenxian Ma & Chunxiang Yin & Jun Zhou & Lu Wang, 2019. "Repair of Fire-Damaged Reinforced Concrete Flexural Members: A Review," Sustainability, MDPI, vol. 11(19), pages 1-14, September.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:19:p:5199-:d:269706
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    References listed on IDEAS

    as
    1. Jun Zhou & Lu Wang, 2019. "Repair of Fire-Damaged Reinforced Concrete Members with Axial Load: A Review," Sustainability, MDPI, vol. 11(4), pages 1-16, February.
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    Cited by:

    1. Alaa Fahad Mashshay & S. Komeil Hashemi & Hamidreza Tavakoli, 2023. "Post-Fire Mechanical Degradation of Lightweight Concretes and Maintenance Strategies with Steel Fibers and Nano-Silica," Sustainability, MDPI, vol. 15(9), pages 1-16, May.

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