Corrosion and electrochemical behavior of steel in hardening concrete

• I.A. Gedvillo, A.S. Zhmakina, N.N. Andreev and S.S. Vesely

A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow, 119071 Russian Federation

Abstract: It has been shown using corrosion and electrochemical methods that reinforcing steel is subject to pitting during the initial period of concrete hardening. It is intensified if chlorides are present in the tempering water and/or if corrosion products exist on the metal surface. IFKhAN-80 inhibitor added with tempering water hinders pit formation on steel during concrete hardening, up to complete suppression of this process. Even at high chloride concentrations and in the presence of corrosion products on the metal surface, reinforcing steel in concrete is passivated some time after concrete tempering.

Keywords: corrosion in concrete, corrosion inhibitors in concrete, reinforced concrete

Int. J. Corros. Scale Inhib., 2017, 6, no. 1, 82–90 PDF (1 898 K)
doi: 10.17675/2305-6894-2017-6-1-7

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