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논문 기본 정보

자료유형
학술저널
저자정보
Hwa-Sung Ryu (Hanyang Experiment and Consulting Co) Deuck-Mo Kim (Hanyang Experiment and Consulting Co) Sang-Heon Shin (Hanyang Experiment and Consulting Co) Won-Jun Park (Kangwon National University) Seung-Jun Kwon (Hannam University)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.12 No.2
발행연도
2018.2
수록면
249 - 257 (9page)

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초록· 키워드

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Calcium acetate, which can be used in concrete to shorten the construction period and to improve productivity, was manufactured using limestone sludge and acetic acid. Calcium acetate contains a carboxyl group, and it can provide anticorrosive properties by forming a complex with the steel surface. We evaluated the basic performance of a carboxylic early-strength agent produced from industrial by-products (limestone sludge and acetic acid) as a corrosion inhibitor. A comparative evaluation was performed using calcium nitrate, which is a conventional early-strength agent; the corrosion area ratio, corrosion state, and electrochemical performance of a steel plate immersed in aqueous solutions were evaluated. A steel plate immersed in calcium acetate was not substantially corroded. The electrochemical investigations showed a high corrosion potential based on the impedance characteristics. The corrosion current showed anodic values, and no corrosion occurred on the surface of the steel plate because of the adsorption of carboxyl groups. Scanning electron microscopy indicated that the steel plate was covered by a crystalline coating, which suppressed corrosion. We show that it is possible to develop an environmentally friendly recycling method as an early-strength agent and corrosion inhibitor when manufacturing calcium acetate using limestone sludge.

목차

Abstract
1. Introduction
2. Experiment
3. Results and Discussion
4. Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2018-532-001807887