Study on the Anti- Corrosion Properties of Organic and Inorganic Inhibitor by Electrochemical Treatment in Aqueous Solution

Abstract:

The various methods for improving chloride penetration resistance in the reinforced concrete have been developed. Among the related general ways, using of corrosion inhibitor became very common. Therefore, in this study, in order to comprehend performance of corrosion inhibitor, the experiment study was conducted about corrosion characteristic of 3 steps(0.0, norm 1/2, norm) compared to organic corrosion inhibitor standard use of liquid and molar 3 steps(0.0, 0.3, 0.6%) of Chloride by added amount of inorganic corrosion inhibitor by the corrosion inhibitor types about 2.4kg/m³, 4.8kg/m³ based on Chloride ion content 1.2kg/m³ for service life prediction of concrete structure by using Poteniostat. As results, in the case of inorganic nitrous acid corrosion inhibitor, it was confirmed that anti-corrosive performance of Chloride ion content 1.2kg/m³ by corrosion Ecorr -0.30V in more than molar ratio 0.3%, and it also was confirmed that anti-corrosive performance of 2.4kg/m³, 4.8kg/m³ in more than molar ratio 0.6%. In addition, the excellent anti-corrosive performance of organic corrosion inhibitor was shown in 1/2(0.42kg/m³) of norm regardless of Chloride ion content, and it can be seen that absorption types organic corrosion inhibitor has excellent anti-corrosive performance compared to the inorganic nitrous acid corrosion inhibitor by the added amount of corrosion inhibitor.

• Periodical: Advanced Materials Research (Volumes 415-417)
• Pages: 2070-2073
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.415-417.2070
• Online since: December 2011
• Authors: Hwa Sung Ryu, Han Seung Lee
• Keywords: Chloride Threshold Level (CTL), Corrosion Ecorr, Corrosion Icorr, Corrosion Inhibitor, Electrochemical Treatment, Lithium Nitrate

References

[1] Song, H. W., Lee C. H., and Ann, K. Y., Factors Influencing Chloride Transport in Concrete Structures Exposed to Marine Environment, Cem Concr Comp, Vol. 30, I. 2, 2008, p.113~121.

DOI: 10.1016/j.cemconcomp.2007.09.005

[2] Song, H. W. And Ann, K. Y., Chloride Threshold Level for Corrosion of Steel in Concrete, Corros Sci., Vol. 49, 2007, p.4113~4133.

DOI: 10.1016/j.corsci.2007.05.007

[3] Glass, G. K. and Buenfeld, N. R., The Pressentation of the Chloride Threshold Level for corrosion of Steel in Concrete, Corros Sci., Vol. 39 1997, p.1003~1013.

DOI: 10.1016/s0010-938x(97)00009-7

[4] Saraswathy. V. and Song, H. W, Performance of Galvanized and Stainless Steel Rebars in Concrete under Macrocell Corrosion Conditions, Mat Corrosm Vol. 56, No. 10, 2005, p.685~691.

DOI: 10.1002/maco.200503888

[5] Lee, Han-Seung, An, Jong-Moon, Shin, Sung-Woo, Study on the evalustion of corrosion protectioneffect with LiNO2, inhibitor", Journal of the Korea S.M. I, s, Vol. 6, No2, 2002, p.339~342.

[6] Song, Ha-Won, Lee, Chang-Hong, Lee, Kewn-Chu, Ann, Ki-Yong, A Study om Chloride Threshold Level of Blended Cement Mortar Using Polarization Resistance Method, Journal of the Korea Concrete Institute Vol. 21, No. 3, p.245~253, June, (2009).

DOI: 10.4334/jkci.2009.21.3.245

[7] Ann, K. Y., Enhancing the Chloride Threshold Level for Steel Corrosion in Concrete, Imperial College, UK, Doctoral Thesis, 2005, p.1~254.

[8] Song, H. W., Ann, K. Y., Lee, C. H., and Lee, K. C., corrosion of Steel in Mortars Containing OPC, PFA, GGBS and SF with Chlorides in Cast, The 4th Civil engineering Conference in the Asian Region, Taipei, Taiwan, June 2528. 2007, p.46~53(In CD).

[9] So, Hyoung-seok, Environmental Influences and Assesment of corrosion Rate of Reinforcing Bars using the Liner Polarization Resistance Technique, Journal of the Architectural Institute of Korea, Vol. 22, No. 2, February, (2006).

[10] Ki-Yung Ann., Song, H. W, "Chloride threshold level for corrosion of steel in concrete, Corrosion Science 49(2007) 4113-4133.

DOI: 10.1016/j.corsci.2007.05.007

[11] Ki-Yung Ann., H.S. Jung, H.S. kim, S.S. Kim, H.Y. Moon, "Effect of calcium nitrite-based corrosion of embedded steel in concrete, Cement and Concrete Reserch 36(2006), 530-535.

DOI: 10.1016/j.cemconres.2005.09.003