Abstract
Epoxy coatings are one of the effective methods of physical protection to protect metal from corrosion in aggressive media. In order to maximize the longevity of concrete structures as much as feasible by minimizing corrosion, the current work focuses on enhancing the performance of epoxy coatings applied to reinforcing bars in concrete. This is achieved through the utilization of a synergistic blend of graphene derivatives, including graphene oxide (GO) and reduced graphene oxide (rGO), with carbon nano-tubes (CNTs). The performance evaluation of prepared epoxy-coated samples was conducted using various assessment techniques: non-destructive testing (NDT) monitoring of corrosion current, ultrasonic-guided wave measurement, and visual inspection dictating coatings’ efficacy. In addition to the non-destructive evaluation methods, the results of the epoxy-coated samples were further substantiated through destructive testing (DT). This involved conducting tests for mass loss and residual tensile strength on the corroded reinforcing bars. The combination of NDT and DT results provides compelling evidence that incorporation of nano-filler in the epoxy matrix leads to a substantial augmentation in corrosion inhibition of the coating as opposed to pure epoxy coatings. GO/CNT provides the superior inhibition, as after subjecting the samples to accelerated corrosion testing for over 150 days, the noteworthy outcome was the absence of any indication of corrosion initiation. It point towards remarkable inhibition of corrosion offered by hybrid modification using GO with CNT and is a step towards the goal to reach sustainable construction.
Similar content being viewed by others
References
Chen Y, Xia C, Shepard Z, Smith N, Rice N, Peterson A M, and Sakulich A, ACS Sustain Chem Eng 5 (2017) 3955. https://doi.org/10.1021/acssuschemeng.6b03142
Koch, G. H. Historic congressional study: corrosion costs and preventive strategies in the United States; 2002. https://trid.trb.org/view/590710
Chen J Effect of reinforcement corrosion on the serviceability of reinforced concrete structures (Doctoral dissertation, University of Dundee) (2004).
Wang X H, Chen B, and Tang P, Constr Build Mater 189 (2018) 612. https://doi.org/10.1016/j.conbuildmat.2018.09.010
Mittal G, Dhand V, Rhee K Y, Park S J, and Lee W R, J Ind Eng Chem 21 (2015) 11. https://doi.org/10.1016/j.jiec.2014.03.022
George J S, Paduvilan J K, Salim N, Sunarso J, Kalarikkal N, Hameed N, and Thomas S, Prog Org Coat 162 (2022) 106571. https://doi.org/10.1016/j.porgcoat.2021.106571
Sharma N, Sharma S, Sharma S K, Mahajan R L, and Mehta R, Constr Build Mater 322 (2022) 126495. https://doi.org/10.1016/j.conbuildmat.2022.126495
Ghauri F A, Raza M A, Baig M S, and Ibrahim S, Corrosion study of the graphene oxide and reduced graphene oxide-based epoxy coatings. Mater Res Express 4 (2017) 125601. https://doi.org/10.1088/2053-1591/aa9aac
Zheng W, Chen W G, Feng T, Li W Q, Liu X T, Dong L L, and Fu Y Q, Prog Org Coat 138 (2020) 105389. https://doi.org/10.1016/j.porgcoat.2019.105389
Gupta R K, Malviya M, Verma C, and Quraishi M A, Mater Chem Phys 198 (2017) 360. https://doi.org/10.1016/j.matchemphys.2017.06.030
Yan Z, Peng Z, Casillas G, Lin J, Xiang C, Zhou H, and Tour J M, ACS Nano 8 (2014) 5061. https://doi.org/10.1021/nn501132n
Nyanor P, El-Kady O, Yehia H M, Hamada A S, Nakamura K, and Hassan M A, Metals Mater Int 27 (2021) 1315. https://doi.org/10.1007/s12540-019-00445-6
Liu J, Yu Q, Yu M, Li S, Zhao K, Xue B, and Zu H, J Alloys Compd 744 (2018) 728. https://doi.org/10.1016/j.jallcom.2018.01.267
Aneja K S, Böhm H M, Khanna A S, and Böhm S, FlatChem 1 (2017) 11. https://doi.org/10.1016/j.flatc.2016.08.003
Ramezanzadeh B, Raeisi E, and Mahdavian M, Int J Adhes Adhes 63 (2015) 166. https://doi.org/10.1016/j.ijadhadh.2015.09.007
Sharma N, Sharma S, Sharma S K, and Mehta R, Constr Build Mater 259 (2020) 120278. https://doi.org/10.1016/j.conbuildmat.2020.120278
Sharma N, Sharma S, Sharma S K, Mahajan R L, and Mehta R, J Build Eng 70 (2023) 106368. https://doi.org/10.1016/j.jobe.2023.106368
Sharma A, Sharma S, Sharma S, and Mukherjee A, Cem Concr Compos 90 (2018) 89. https://doi.org/10.1016/j.cemconcomp.2018.03.014
Sharma S, and Mukherjee A, Res Nondestr Eval 24 (2013) 63. https://doi.org/10.1080/09349847.2012.699609
Sharma S, and Mukherjee A, Struct Health Monit 9 (2010) 555. https://doi.org/10.1177/1475921710365415
Acknowledgements
The research is sponsored by Centre of Excellence in Emerging Materials (CEEMS, TIET-VT Centre), Thapar Institute of Engineering and Technology, Patiala, India.
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Sharma, N., Sharma, S., Sharma, S.K. et al. Nano-Modified Epoxy Coatings for Enhanced Corrosion Inhibition in Reinforcing Bars. Trans Indian Inst Met 77, 1423–1431 (2024). https://doi.org/10.1007/s12666-023-03057-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12666-023-03057-2