Electrochemical Performance of Concrete Conductive Anode Paint Used as an Impressed Current Anode Material
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 7
Abstract
The impressed current cathodic protection (ICCP) technique is a widely accepted technique to control corrosion of steel in reinforced concrete structures exposed to a high chloride environment. With the growing applicability of the technique, this research focused on developing a new anode material for the system. The author’s previous zinc-rich paint (ZRP) anode is further modified to improve its properties and its performance to be suitable for ICCP. The new concrete conductive anode paint (CAP) was evaluated for various concrete elements with varying steel: concrete ratios. Results showed that concrete CAP possesses excellent electrical conductivity as the anode for the ICCP system irrespective of specimen size. Compared with other available commercial anode paint materials and ZRP anode, concrete CAP is more promising as an ICCP anode material and satisfies the required polarization requirement. Polarization performance showed anode is capable to protect reinforced concrete structure with varied steel: concrete or steel: anode ratio. With an anode current density of , the service life was evaluated as 45 years.
Practical Applications
Cathodic protection is one of the most succesfull and widely accepted technique to control corrosion in chloride contaminated reinforced concrete. However, the commercially available coating anode materials offer the advantage of easy application and good performance compared to other anodes but lacks in its durability and shorter service life. The present manuscript introduces a new paint anode for Impressed Current Cathodic Protection System which offers advantage over currently available anodes in terms of application, performance and durability. Thus, the results of this research can be directly used by contractors, practitioners and highway agencies to make an informed decision on selection of correct anode type for repairing corroded reinforced structures.
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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.
References
Anwar, M. S., B. Sujitha, and R. Vedalakshmi. 2014. “Light-weight cementitious conductive anode for impressed current cathodic protection of steel reinforced concrete application.” Constr. Build. Mater. 71 (8): 167–180. https://doi.org/10.1016/j.conbuildmat.2014.08.032.
ASTM. 2012. Standard test method for pull-off adhesion strength of coatings on concrete using portable pull-off adhesion testers. ASTM D7234-12. West Conshohocken, PA: ASTM.
Bennett, J., J. B. Bushman, J. Costa, and P. Noyce. 2000. Field application of performance enhancing chemicals to metallized zinc anodes. Houston: NACE International.
Broomfield, J. P., and S. El Belbol. 2006. Impressed current anodes for the cathodic protection of atmospherically exposed reinforced concrete—Technical note 11. Bordon, UK: Corrosion Prevention Association.
Brueckner, R., R. Cobbs, and C. Atkins. 2022. “A review of developments in cathodic protection systems for reinforced concrete structures.” MATEC Web Conf. 361 (10): 02001. https://doi.org/10.1051/matecconf/202236102001.
BSI (British Standard Institution). 2004. Products and systems for the protection and repair of concrete structures—Definitions, requirements, quality control and evaluation of conformity. Part 2: Surface protection systems for concrete. BS EN 1504-2. London: BSI.
BSI (British Standard Institution). 2016. Cathodic protection of steel in concrete. BS EN ISO 12696. London: BSI.
Cheng, X., J. Xia, R. Jie Wu, W. Liang Jin, and C. Gen Pan. 2022. “Optimisation of sacrificial anode cathodic protection system in chloride-contaminated reinforced concrete structure.” J. Build. Eng. 45 (Jul): 103515. https://doi.org/10.1016/j.jobe.2021.103515.
Cramer, S. D., B. S. Covino, G. R. Holcomb, S. J. Bullard, W. K. Collins, R. D. Govier, R. D. Wilson, and H. M. Laylor. 1999. “Thermal sprayed titanium anode for cathodic protection of reinforced concrete bridges.” J. Therm. Spray Technol. 8 (1): 133–145. https://doi.org/10.1361/105996399770350665.
Darowicki, K., J. Orlikowski, S. Cebulski, and S. Krakowiak. 2003. “Conducting coatings as anodes in cathodic protection.” Prog. Org. Coatings 46 (3): 191–196. https://doi.org/10.1016/S0300-9440(03)00003-1.
Das, S. C., H. S. Pouya, and E. Ganjian. 2015. “Zinc-rich paint as anode for cathodic protection of steel in concrete.” J. Mater. Civ. Eng. 27 (11): 1–9. https://doi.org/10.1061/(ASCE)MT.1943-5533.0001243.
Dixit, M., and A. K. Gupta. 2021. “A review of different assessment methods of corrosion of steel reinforcement in concrete.” Iran. J. Sci. Technol. Trans. Civ. Eng. 2021 (1): 6789. https://doi.org/10.1007/s40996-021-00644-5.
El Maaddawy, T. A., and k. A. Soudki. 2003. “Effectiveness of impressed current technique to simulate corrosion of steel reinforcement in concrete.” J. Mater. Civ. Eng. 15 (1): 41–47. https://doi.org/10.1061/(ASCE)0899-1561(2003)15:1(41).
Goyal, A., E. K. Olorunnipa, H. S. Pouya, E. Ganjian, and A. O. Olubanwo. 2020. “Potential and current distribution across different layers of reinforcement in reinforced concrete cathodic protection system—A numerical study.” Constr. Build. Mater. 262 (20): 120580. https://doi.org/10.1016/j.conbuildmat.2020.120580.
Goyal, A., H. S. Pouya, and E. Ganjian. 2019. “Performance assessment of specialist conductive paint for cathodic protection of steel in reinforced concrete structures.” Constr. Build. Mater. 223 (1): 1083–1094. https://doi.org/10.1016/j.conbuildmat.2019.07.344.
Marchebois, H., C. Savall, J. Bernard, and S. Touzain. 2004. “Electrochemical behavior of zinc-rich powder coatings in artificial sea water.” Electrochim. Acta 49 (17–18): 2945–2954. https://doi.org/10.1016/j.electacta.2004.01.053.
NACE. 2007. Test method testing of embeddable impressed current anodes for use in cathodic protection of atmospherically exposed steel-reinforced concrete. Houston: NACE.
NACE. 2016. Evaluation of coatings containing conductive carbon pigmentation for use as an anode on atmospherically exposed reinforced concrete. Houston: NACE.
Orlikowski, J., S. Cebulski, and K. Darowicki. 2004. “Electrochemical investigations of conductive coatings applied as anodes in cathodic protection of reinforced concrete.” Cem. Concr. Compos. 26 (6): 721–728. https://doi.org/10.1016/S0958-9465(03)00105-7.
Poltavtseva, M., G. Ebell, and J. Mietz. 2015. “Electrochemical investigation of carbon-based conductive coatings for application as anodes in ICCP system of reinforced concrete structures.” Mater. Corros. 2015 (7): 12696. https://doi.org/10.1002/maco.201407680.
Qiao, G., B. Guo, Y. Hong, and J. Ou. 2015. “Multi-scale carbon-admixtures enhanced cementitious anodic materials for the impressed current cathodic protection of RC structures.” Int. J. Electrochem. Sci. 10 (10): 8423–8436.
The Concrete Society. 2011. Cathodic protection of steel in concrete—Appendices. Crowthorne, UK: The Concrete Society.
Xu, J., and W. Yao. 2011. “Electrochemical studies on the performance of conductive overlay material in cathodic protection of reinforced concrete.” Constr. Build. Mater. 25 (5): 2655–2662. https://doi.org/10.1016/j.conbuildmat.2010.12.015.
Zhang, W., R. S. Blackburn, and A. A. Dehghani-Sanij. 2007. “Effect of carbon black concentration on electrical conductivity of epoxy resin–carbon black–silica nanocomposites.” J. Mater. Sci. 42 (18): 7861–7865. https://doi.org/10.1007/s10853-007-1670-2.
Zhou, Y., X. Zheng, F. Xing, L. Sui, Y. Zheng, and X. Huang. 2020. “Investigation on the electrochemical and mechanical performance of CFRP and steel-fiber composite bar used for impressed current cathodic protection anode.” Constr. Build. Mater. 255 (25): 119377. https://doi.org/10.1016/j.conbuildmat.2020.119377.
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Published In
Journal of Materials in Civil Engineering
Volume 35 • Issue 7 • July 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Sep 2, 2022
Accepted: Nov 28, 2022
Published online: Apr 27, 2023
Published in print: Jul 1, 2023
Discussion open until: Sep 27, 2023
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