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논문 기본 정보

자료유형
학술저널
저자정보
Minjeong Kim (Kyonggi University) Yootaek Kim (Kyonggi University)
저널정보
한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제22권 제2호
발행연도
2021.1
수록면
158 - 168 (11page)

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초록· 키워드

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Integrated gasification combined cycle (IGCC) slags and Si sludges were used as the raw material and bloating material forobtaining lightweight geopolymers, respectively. When Si sludge was used for the bloating reaction to obtain ultra-lightweightgeopolymers, the specimens have large pores an inhomogeneous pore distribution, resulting in adverse effects on themechanical properties of lightweight geopolymers. Three curing temperatures and two different curing methods wereinvestigated for the control of the microstructure and pore distribution of lightweight geopolymers. Compressive strengths, pHchanges, FT-IR spectra, microstructure observations, and ICP results before and after immersion were compared for thespecimens obtained with different curing temperatures and methods. The highest compressive strength after immersion wasobtained for the specimen cured at 123 oC in an autoclave because the degree of geopolymerization of this specimen was higherthan for any other specimens as found from the analysis of the pH changes, FT-IR spectra, microstructure observation, andICP results. In conclusion, curing at high temperature (123 oC) with an autoclave is the optimal curing for maintaining stablemechanical properties in a wet service environment.

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