Abstract

The aim of this study is to investigate the effect of 0.1 M nitrite ions on the corrosion of the reinforcing steel and the compressive strength of the concrete. The electrochemical tests of the corrosion resistance of steel and reinforced concrete in 3.5% NaCl and 3.5% NaCl + 0.1 M NaNO2 solutions was examined for 90 days. In the presence of 0.1 M nitrite ions polarization resistance (Rp) values of reinforced concrete were higher than those without Sodium nitrite. AC impedance spectra revealed the similar results with Rp measurements. The compressive strength of concrete specimens containing 0.1 M nitrite ions was measured and an increase of 14.7-38.9% was observed.