In this study, Corrosion behavior in mortar was observed by the passage of time by using EIS method. As a result of EIS experiment, equivalent circuit and changes of Impedance parameter could be observed. In addition, it was confirmed that impedance of rebar in concrete and corrosion rate according to the amount of NaCl and LiNO2 were different.

• 이한승(한양대학교 ERICA 건축학부 교수) | Lee, Han Seung Corresponding author
• 박장현(한양대학교 대학원 건축시스템공학과, 박사과정) | Park, Jang Hyun