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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제20권
- 발행연도
- 2019.1
- 수록면
- 36 - 45 (10page)
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A novel microcapsule-based self-healing system was developed in Guangdong Key Laboratory of Durability in Coastal CivilEngineering to prolong the concrete service life, in which lead sulfate is used as the shell material of the microcapsules. Theself-healing system is triggered by the reaction of lead sulfate with chloride ion. In this study, the effect of lead sulfate onchloride ion transport in cement-based materials was investigated. The bulk diffusion and rapid chloride migration tests werecarried out. The time dependence of chloride diffusion was analysed based on the results of the Bulk diffusion test. The changein the microstructure of cement-based materials upon incorporation of lead sulfate was observed and analysed via mercuryintrusion porosimetry and scanning electron microscopy. Results showed that chloride-binding was prevalent at an immersionperiod of less than 90 days, while sulfate attack superseded after 90 days. Therefore, the impact of both factors needs to beconsidered when utilizing lead sulfate as a shell material in cementitious materials.
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