Study on Optimal Ratio of Compound Corrosion Inhibitors for Reinforcing Steel

Abstract:

In this paper, the anticorrosive effects of two types of corrosion inhibitors (anodic inhibitors and cathodic inhibitors) on rebars immersed in the simulated concrete pore solution with 3.5%( wt) NaCl were studied by the static weight loss method . The results are as following: firstly, all of the inhibitors had an anticorrosive effect on the rebars and sodium nitrite performed best. Besides, the higher the concentration, the more obvious effect .Secondly, diethanolamine had the best performance in the cathodic inhibitors. Thirdly, sodium nitrite had a good coordination effect with diethanolamine instead of being used alone. In this way, it can exist synergy and reduce the activity of cathode and anode by the formation of consecutively protective film on the surface of the rebars.

• Periodical: Applied Mechanics and Materials (Volume 507)
• Pages: 245-248
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.507.245
• Online since: January 2014
• Authors: Yi Jiang, Chao Yi Zheng, Jun Zhe Liu
• Keywords: Coordination Effect, Inhibitor, Sodium Nitrite, Steel Corrosion

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