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J. Korean Ceram. Soc. > Volume 39(6); 2002 > Article
Journal of the Korean Ceramic Society 2002;39(6): 540.
doi: https://doi.org/10.4191/kcers.2002.39.6.540
임피던스 측정에 의한 혼합재를 포함한 포틀랜드 시멘트의 수화
송종택, 김훈상, 배승훈
단국대학교 재료공학과
Hydration of Portland Cement Containing Blending Components by Impedance Spectroscopy
In this work, the hydration behaviour of portland cement pastes containing fly ash, blast-furnace slag and silica fume is investigated by Impedance Spectroscopy(IS). As fly ash or blast-furnace slag was added to portland cement, the values of R$_{t(s+1)}$ and R$_{t(s+1)}$ were decreased in the early hydration period. It showed that hydration of cement containing blending components was slower than it of the reference cement paste with the same W/C ratio. However, the cement paste containing silica fume had a large value of R$_{t(s+1)}$ and R$_{t(int)}$due to very rapid pozzolanic reactivity of silica fume in the hydration time. In OPC-fly ash system, a characteristic plateau region appeared between straight-line and semicircle. The plateau region continued to grow in range with the content of fly ash and the hydration time.
Key words: Impedance specroscopy, Hydration behaviour, Fly ash, Blast-furnace slag, Silica fume
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