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Mechanical Performance of Corroded TMT Steel Rebars Under Post-Fire Conditions

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Abstract

The paper presents an experimental investigation on estimating the residual mechanical properties of Thermo-Mechanically Treated (TMT) steel bars under combined effect of corrosion and high temperature. In the test program, TMT rebars of grade Fe 550D are exposed to different levels of corrosion up to 30%, through accelerated corrosion, and elevated temperatures range from room temperature to 900 °C. Further, the mechanical properties of the corroded and pre-heated rebars are tested through tensile tests at room temperature. Based on the test results, the effect of corrosion and elevated temperatures on the behavior of steel bars was found to be deteriorated significantly, particularly on the yield stress and ultimate strength, while no significant reduction was observed in the elastic modulus. The results of the experimental investigations were well documented in the paper.

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Acknowledgments

We acknowledge the support for providing testing facilities at the Department of Civil Engineering, Indian Institute of Technology, Guwahati, India.

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No funding was received for this work.

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Authors and Affiliations

  1. Civil and Infrastructure Engineering Department, Indian Institute of Technology Jodhpur, Rajasthan, 342030, India

    Ankit Kumar Maurya & Tekcham Gishan Singh

  2. Civil Engineering Department, Indian Institute of Technology Guwahati, Assam, 781039, India

    Suman Kumar Mushahary & Konjengbam Darunkumar Singh

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  1. Ankit Kumar Maurya
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  2. Suman Kumar Mushahary
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  3. Tekcham Gishan Singh
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  4. Konjengbam Darunkumar Singh
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Contributions

AKM was involved in experimental investigation, data curation, formal analysis, investigation, and writing—original draft. SKM helped with experimental investigation. TGS participated in conceptualization, methodology, visualization, supervision, resource, hardware, project administration, and writing—review and editing. KDS helped with resource, hardware, and writing—review and editing.

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Correspondence to Tekcham Gishan Singh.

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Maurya, A.K., Mushahary, S.K., Singh, T.G. et al. Mechanical Performance of Corroded TMT Steel Rebars Under Post-Fire Conditions. J. Inst. Eng. India Ser. A (2024). https://doi.org/10.1007/s40030-024-00795-4

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