Bond Deterioration between Corroded Reinforcing Bars with Variable Diameters and Concrete at Elevated Temperatures
Publication: Journal of Structural Engineering
Volume 149, Issue 10
Abstract
The fire resistance of corroded reinforced concrete has attracted extensive attention, mainly due to the frequent occurrence of fires in old structures. However, using the postfire bond strength to predict structural capacity during fires leads to inaccurate results. Thus, in this study, an accelerated corrosion test and an eccentric pullout test were performed under steady-state conditions from 20°C to 800°C. The test results indicated that compared with the bond strength at 20°C, the bond strength at 200°C decreased by 6% for the corroded specimen (corrosion level below 4.3%) and increased by 11% for the uncorroded specimen. When the temperature exceeded 500°C, the storage modulus and bond strength decreased 55%. Increasing the rebar diameter reduced the bond strength by approximately 29% and made the descending section of the curve steeper during exposure to fire. The energy dissipation at 100°C was larger than that at other temperatures, and the bond stiffness at 600°C was 12.5% of that at 20°C. The reduction in bond stiffness postponed the development of splitting cracks, restricted the crack width, and prevented splitting failure. Subsequently, temperatures dependence was analyzed and methods were proposed for the calculation of bond strengths at elevated temperatures. The results obtained with the proposed continuous bond-slip model were in satisfactory agreement with the pullout test results. Finally, the comparison of integral absolute error indicated that the model could be used to make accurate calculations of bond strengths during fires.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work was conducted with financial support from the National Natural Science Foundation of China (Grant No. 52178487), the Natural Science Foundation of Shandong Province (Grant No. ZR2021ME228), and China Postdoctoral Foundation (Grant No. 2018M632640). Their support is gratefully acknowledged.
References
Alhawat, M., and A. Ashour. 2020. “Bond strength between corroded steel and recycled aggregate concrete incorporating nano silica.” Constr. Build. Mater. 237 (Mar): 117441. https://doi.org/10.1016/j.conbuildmat.2019.117441.
Avadh, K., P. Jiradilok, J. E. Bolander, and K. Nagai. 2021. “Direct observation of the local bond behavior between corroded reinforcing bars and concrete using digital image correlation.” Cem. Concr. Compos. 123 (May): 104180. https://doi.org/10.1016/j.cemconcomp.2021.104180.
Ba, G., J. Miao, W. Zhang, and C. Liu. 2016. “Influence of cracking on heat propagation in reinforced concrete structures.” J. Struct. Eng. 142 (7): 04016035. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001483.
Ba, G., X. Weng, C. Liu, and J. Miao. 2021. “Bond strength of corroded reinforcements in concrete after high-temperature exposure.” Constr. Build. Mater. 270 (Feb): 121400. https://doi.org/10.1016/j.conbuildmat.2020.121400.
Dai, L., H. Bian, L. Wang, M. Potier-Ferry, and J. Zhang. 2020. “Prestress loss diagnostics in pretensioned concrete structures with corrosive cracking.” J. Struct. Eng. 146 (3): 04020013. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002554.
Fang, C., K. Lundgren, L. Chen, and C. Zhu. 2004. “Corrosion influence on bond in reinforced concrete.” Cem. Concr. Res. 34 (11): 2159–2167. https://doi.org/10.1016/j.cemconres.2004.04.006.
Feng, Q., P. Wei, K. Zhao, and R. Xu. 2022. “Experimental investigation of stirrup confinement effects on bond-slip responses for corner and middle bars.” Constr. Build. Mater. 314 (Jan): 125629. https://doi.org/10.1016/j.conbuildmat.2021.125629.
Fu, C., N. Jin, H. Ye, X. Jin, and W. Dai. 2017. “Corrosion characteristics of a 4-year naturally corroded reinforced concrete beam with load-induced transverse cracks.” Corros. Sci. 117 (Mar): 11–23. https://doi.org/10.1016/j.corsci.2017.01.002.
Gong, W., Q. Chen, and J. Miao. 2021. “Bond behaviors between copper slag concrete and corroded steel bar after exposure to high temperature.” J. Build. Eng. 44 (Sep): 103312. https://doi.org/10.1016/j.jobe.2021.103312.
Hou, L., S. Guo, B. Zhou, S. Xu, and D. Chen. 2018. “Bond-slip behavior of corroded rebar embedded in ultrahigh toughness cementitious composite.” J. Mater. Civ. Eng. 30 (7): 04018132. https://doi.org/10.1061/(ASCE)MT.1943-5533.0002324.
Jiang, C., H. Ding, X. L. Gu, and W. P. Zhang. 2022. “Failure mode-based calculation method for bending bearing capacities of normal cross-sections of corroded reinforced concrete beams.” Eng. Struct. 258 (Aug): 114946. https://doi.org/10.1016/j.engstruct.2022.114113.
Jin, L., Y. Lan, R. Zhang, and X. Du. 2019. “Impact performances of RC beams at/after elevated temperature: A meso-scale study.” Eng. Fail. Anal. 105 (Jul): 196–214. https://doi.org/10.1016/j.engfailanal.2019.07.002.
Jin, L., X. Li, R. Zhang, and X. Du. 2021. “Bond-slip behavior between concrete and deformed rebar at elevated temperature: Mesoscale simulation and formulation.” Int. J. Mech. Sci. 205 (Jun): 106622. https://doi.org/10.1016/j.ijmecsci.2021.106622.
Kodur, V. K. R., and A. Agrawal. 2017. “Effect of temperature induced bond degradation on fire response of reinforced concrete beams.” Eng. Struct. 142 (Jul): 98–109. https://doi.org/10.1016/j.engstruct.2017.03.022.
Li, X., J. Zhao, and X. Zhang. 2021. “A mechanical bond model for reinforcing bar in concrete subjected to monotonic and reversed cyclic loading.” J. Build. Eng. 44 (Jul): 102912. https://doi.org/10.1016/j.jobe.2021.102912.
Lin, H., Y. Zhao, P. Feng, H. Ye, J. Ozbolt, C. Jiang, and J. Q. Yang. 2019a. “State-of-the-art review on the bond properties of corroded reinforcing steel bar.” Constr. Build. Mater. 213 (Jul): 216–233. https://doi.org/10.1016/j.conbuildmat.2019.04.077.
Lin, H., Y. Zhao, J. Ozbolt, P. Feng, C. Jiang, and R. Eligehausen. 2019b. “Analytical model for the bond stress-slip relationship of deformed bars in normal strength concrete.” Constr. Build. Mater. 198 (Feb): 570–586. https://doi.org/10.1016/j.conbuildmat.2018.11.258.
Lin, H., Y. Zhao, J. Ožbolt, and R. Hans-Wolf. 2017. “The bond behavior between concrete and corroded steel bar under repeated loading.” Eng. Struct. 140 (Jun): 390–405. https://doi.org/10.1016/j.engstruct.2017.02.067.
Ma, Y., Z. Guo, L. Wang, and J. Zhang. 2017. “Experimental investigation of corrosion effect on bond behavior between reinforcing bar and concrete.” Constr. Build. Mater. 152 (Oct): 240–249. https://doi.org/10.1016/j.conbuildmat.2017.06.169.
Mancini, G., and F. Tondolo. 2014. “Effect of bond degradation due to corrosion—A literature survey.” Struct. Concr. 15 (3): 408–418. https://doi.org/10.1002/suco.201300009.
Mousavi, S. S., M. Dehestani, and K. K. Mousavi. 2017. “Bond strength and development length of steel bar in unconfined self-consolidating concrete.” Eng. Struct. 131 (Jan): 587–598. https://doi.org/10.1016/j.engstruct.2016.10.029.
Natino, M. R. L., Y. Yang, H. Nakamura, and T. Miura. 2021. “Experimental study on bond behavior of corroded rebars coated by anti-corrosive materials in polymer cement mortar.” Constr. Build. Mater. 300 (Jul): 124228. https://doi.org/10.1016/j.conbuildmat.2021.124228.
Özkal, F. M., M. Polat, M. Yağan, and M. O. Öztürk. 2018. “Mechanical properties and bond strength degradation of GFRP and steel rebars at elevated temperatures.” Constr. Build. Mater. 184 (Sep): 45–57. https://doi.org/10.1016/j.conbuildmat.2018.06.203.
Parulekar, Y. M., D. Dutta, N. Thodetti, and K. Bhargava. 2020. “Performance assessment of corroded reinforced concrete structure considering bond deterioration.” J. Perform. Constr. Facil. 34 (2): 04020009. https://doi.org/10.1061/(ASCE)CF.1943-5509.0001411.
Pham, N. V., T. Miyashita, K. Ohgaki, Y. Hidekuma, and T. Harada. 2021. “Repair method and finite element analysis for corroded gusset plate connections bonded to CFRP sheets.” J. Struct. Eng. 147 (1): 04020310. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002862.
Rossi, C. R. C., D. R. C. Oliveira, M. S. Picanço, B. B. Pompeu Neto, and A. M. Oliveira. 2020. “Development length and bond behavior of steel bars in steel fiber–reinforced concrete in flexural test.” J. Mater. Civ. Eng. 32 (1): 04019333. https://doi.org/10.1061/(ASCE)MT.1943-5533.0002979.
Sharma, A., J. Bošnjak, and M. Tonidis. 2021. “Post-fire performance of RC beams with critical lap splices—Experimental investigation and numerical validation.” J. Build. Eng. 34 (Feb): 102045. https://doi.org/10.1016/j.jobe.2020.102045.
Shi, X., T.-H. Tan, K. H. Tan, and Z. Guo. 2004. “Influence of concrete cover on fire resistance of reinforced concrete flexural members.” J. Struct. Eng. 130 (8): 1225–1232. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:8(1225).
Song, T.-Y., Z. Tao, L.-H. Han, and B. Uy. 2017. “Bond behavior of concrete-filled steel tubes at elevated temperatures.” J. Struct. Eng. 143 (11): 04017147. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001890.
Tariq, F., and P. Bhargava. 2021. “Temperature dependent properties of corroded super ductile tmt steel bars.” Structures 33 (Jul): 4124–4140. https://doi.org/10.1016/j.istruc.2021.07.002.
Tariq, F., and P. Bhargava. 2022. “Bond–slip models for corroded RC members exposed to fire.” J. Struct. Eng. 148 (3): 04021277. https://doi.org/10.1061/(ASCE)ST.1943-541X.0003135.
Tariq, F., M. Gaikwad, and P. Bhargava. 2021. “Analysis of behaviour of corroded RC beams exposed to elevated temperatures.” J. Build. Eng. 42 (Jul): 102508. https://doi.org/10.1016/j.jobe.2021.102508.
Wu, J., L. Guo, L. Jin, and X. Du. 2022. “Experimental investigation of the bond performance between nonuniformly corroded reinforcing bar and concrete.” J. Mater. Civ. Eng. 34 (12): 04022346. https://doi.org/10.1061/(ASCE)MT.1943-5533.0004515.
Yang, O., B. Zhang, G. Yan, and J. Chen. 2018. “Bond performance between slightly corroded steel bar and concrete after exposure to high temperature.” J. Struct. Eng. 144 (11): 04018209. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002217.
Yuan, G., C. Guo, and Z. Lv. 2006. “Experimental study on bond property of reinforced concrete at high temperatures.” Ind. Constr. 36 (2): 7–10.
Zhang, B., H. Zhu, J. Chen, and O. Yang. 2019. “Evaluation of bond performance of corroded steel bars in concrete after high temperature exposure.” Eng. Struct. 198 (Jul): 109479. https://doi.org/10.1016/j.engstruct.2019.109479.
Zhang, X., L. Wang, J. Zhang, and Y. Liu. 2016. “Model for flexural strength calculation of corroded RC beams considering bond–slip behavior.” J. Eng. Mech. 142 (7): 1–11. https://doi.org/10.1061/(asce)em.1943-7889.0001079.
Zhou, Z., J. Huo, and Z. Li. 2019. “Experimental study and analysis on bond behaviour between steel bar and concrete.” Build. Struct. 49 (10): 1–5. https://doi.org/10.19701/j.jzjg.2019.10.015.
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Published In
Journal of Structural Engineering
Volume 149 • Issue 10 • October 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Aug 15, 2022
Accepted: May 10, 2023
Published online: Jul 24, 2023
Published in print: Oct 1, 2023
Discussion open until: Dec 24, 2023
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