Abstract
The deterioration of the highway and bridge infrastructure has received significant attention in recent years. A major contributing factor to this deterioration is the reinforcing steel corrosion. Electrochemical impedance spectroscopy and linear polarization techniques were used to study 5-year-old lollipop-like concrete specimens containing sodium nitrite and dinitrobenzoic acid. An equivalent circuit model considering the physical characteristics of the rebar/concrete (RC) interface was used to simulate the impedance spectra. The RC parameters obtained from the impedance spectra simulation including the maximum phase angle shift and polarization resistance were used to characterize the rebar corrosion. The effectiveness of the corrosion-inhibiting additives in the presence and absence of chloride ions was evaluated. The corrosion current densities estimated by impedance measurement were confirmed by those determined using linear polarization techniques. The purpose of this study was to evaluate the long-term performance potential of sodium nitrite and dinitrobenzoic acid used as the corrosion-inhibiting additives in chloride contaminated reinforced concrete.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
