Three Year Performance of Sacrificial Anode Cathodic Protection System in the Reinforced Concrete Bridge Structures

Abstract:

The aim of this study was to obtain special cathodic protection (CP) behavior in coastal bridge structures. This bridge structure was located to the area where repetition between fresh water and sea water taken place due to ebb and flood tide. In this study, zinc-mesh anode was used as a sacrificial anode. Thus, it was a good opportunity to verify the effectiveness of sacrificial anode CP (SACP) in this special location. Measurement was conducted for three years. Test Factors were corrosion potential, CP potential, 4 hour depolarization potential, and CP current. Moreover, resistivity and corrosion rate were measured by the multi-functional corrosion monitoring sensor (DMS-100, Conclinic Co. Ltd) that could measure potential, galvanic current, corrosion rate, concrete resistivity, and temperature. After three years from installation of CP, it could confirm that although some pier showed low depolarization potential less than 100mV, most piers showed good protection both electrochemical and physical aspects.

• Periodical: Advanced Materials Research (Volumes 753-755)
• Pages: 467-475
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.753-755.467
• Online since: August 2013
• Authors: Jin A Jeong, Chung Kuk Jin
• Keywords: Cathodic Protection (CP), Corrosion Rate, Potential, Reinforced Concrete (RC), SACP

References

[1] M. Saleem, M. Shameem, S.E. Hussain, M. Maslehuddin, Effect of moisture, chloride and sulphate contamination on the electrical resistivity of Portland cement concrete, Construction and Building Materials 10 (1996) 209-210.

DOI: 10.1016/0950-0618(95)00078-x

[2] B. Sederholm, J. Almqvist, Corrosion Properties of Stainless Steels as Reinforcement in Concrete in Swedish Outdoor Environment, NACE International Paper No. 09203 (2009) 1-2.

[3] G. Blancoa, A. Bautistaa, H. Takenoutib, EIS study of passivation of austenitic and duplex stainless steels reinforcements in simulated pore solutions, Cement & Concrete Composites 28 (2006) 212-213.

DOI: 10.1016/j.cemconcomp.2006.01.012

[4] J.P. Broomfield, Corrosion of steel in concrete, Second ed., Taylor & Francis, London and New York, (2007).

[5] S. Fajardoa, D.M. Bastidasa, M. Criadoa, M. Romerob, J.M. Bastidasa, Corrosion behaviour of a new low-nickel stainless steel in saturated calcium hydroxide solution, Construction and Building Materials 25 (2011) 4090-4091.

DOI: 10.1016/j.conbuildmat.2011.04.056

[6] O.T.D. Rincóna, Y. Hernández-Lópeza, A. D. Valle-Morenob, A.A. Torres-Acostab, F. Barriosa, P. Monteroa, P. Oidor-Salinasb, J.R. Monteroc, Environmental influence on point anodes performance in reinforced concrete, Construction and Building Materials 22 (2008).

DOI: 10.1016/j.conbuildmat.2006.11.014

[7] A.A. Sagüés, R.G. Powers, Sprayed-zinc sacrificial anodes for reinforced concrete in marine service, Corrosion 52 (1996) 508-510.

DOI: 10.5006/1.3292141

[8] M. Funahashi, W.T. Young, Three year performance of aluminum alloy galvanic cathodic protection system, NACE International Paper No. 99550 (1999) 1-3.

[9] L. Bertolini, E. Redaelli, Throwing power of cathodic prevention applied by means of sacrificial anodes to partially submerged marine reinforced concrete piles: Results of numerical simulations, Corrosion Science 51 (2009) 2218-2220.

DOI: 10.1016/j.corsci.2009.06.012

[10] L. Bertolini, F. Bolzoni, P. Pedeferri, T. Pastore, Three year tests on cathodic prevention of reinforced concrete structures, NACE International Paper No. 97244 (1997) 1-5.

[11] NACE Standard SP0290, Impressed current cathodic protection of reinforced steel in atmospherically exposed concrete structures, (2007).