Acknowledgement
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government(MSIT) (No. NRF-2018R1A5A1025137).
Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)
- 2022.11a
- /
- Pages.111-112
- /
- 2022
Application of waste biomass as ecological corrosion inhibitors for steel rebar embedded in cement mortar
시멘트 모르타르에 매립된 철근의 생태학적 부식방지제로서 폐기물 바이오매스의 적용
Abstract
In this present study, the corrosion mitigation effect of conifer cone extract (CC) was examined in the cement mortar to improve the steel rebar (SR) corrosion resistance. The corrosion inhibition properties of the SR embedded in cement mortar (CM) admixed with different percentage (0, 0.5, 1.0, 1.5, 2.0 %) of CC was studied by open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) tests. This result confirms that the CM with 0.5% of CC added has better corrosion resistance than the blank specimen (0 % of CC). Although, the percentage of CC increase above 0.5%, the CC could yield a negative impact on CM properties in terms of reducing the corrosion resistance due to the reduction of cement hydration reaction. It was highlighted that the SR embedded in CM containing 0.5% of CC had increased corrosion resistance.