A time-saving method to assess the efficiency of corrosion inhibitors by electro osmosis |
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| Authors: | Chun-lei Geng Duan Weng |
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| Affiliation: | 1.Department of Materials Science and Engineering,Tsinghua University,Beijing,China;2.Beijing Building Materials Academy of Sciences Research (State Key Laboratory),Beijing,China |
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| Abstract: | The corrosion inhibitor is one of the most important technologies to enhance the durability of steel-reinforced concrete.
A kind of time-saving method was developed to assess the inhibitor efficiency by using a 32 V electric field to accelerate
chloride ion migration in concrete. Potentiodynamic polarization scanning test was used to evaluate the corrosion states.
The comprehensive efficiency of an inhibitor should be assessed in two aspects: resistance to chloride ion permeability and
inhibiting efficiency. The specimens with different mixing amount of sodium nitrite and migration corrosion inhibitors were
used to verify the accuracy and reliability of this method. The results show the differences in inhibiting efficiency of the
inhibitors clearly, indicating the reliability of this time-saving method. |
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