The effect of organic core-shell corrosion inhibitors on corrosion performance of the reinforcement in simulated concrete pore solution

摘要

Corrosion inhibitor is widely used to mitigate corrosion damage of reinforced concrete. The objective of this study is to clarify the inhibition effect of organic core-shell corrosion inhibitors (CSCI) on the corrosion performance of the reinforcement in simulated concrete pore solution. The results indicated that the corrosion rate of the reinforcement was significantly reduced by the core-shell corrosion inhibitors. When the concentration of BTA-containing CSCI was higher than 2.27 x 10(-3) wt%, the inhibition efficiency was above 93%. The inhibitors were efficiently adsorbed on the reinforcement surface and formed [Fe-n(BTA)(p)](m) complex, which was beneficial for corrosion protection of the reinforcement. (C) 2020 Elsevier Ltd. All rights reserved.