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J. Korean Ceram. Soc. > Volume 46(1); 2009 > Article
Journal of the Korean Ceramic Society 2009;46(1): 58.
doi: https://doi.org/10.4191/kcers.2009.46.1.058
분쇄된 플라이애시를 혼합한 3성분계 시멘트의 유동특성
박효상, 유동우1, 변승호, 송종택
단국대학교 신소재공학과
1군산대학교 신소재공학과
Rheological Properties of Ordinary Portland Cement - Blast Furnace Slag - Fly Ash Blends Containing Ground Fly Ash
Hyo-Sang Park, Dong-Woo Yoo1, Seung-Ho Byun, Jong-Taek Song
Department of Materials Science and Engineering, Dankook University
1Major of Materials Science and Engineering, Kunsan National University
In this study, rheological properties of ternary system cement containing ground fly ash(F3, Blaine specific surface area $8,100;cm^2/g$) were investigated using mini slump, coaxial cylinder viscometer and conduction calorimeter. In the results, the segregation resistance was observed at high W/B and PC area while the replacement ratio of F3 was increasing. The 2:5:3 system was shown in higher fluidity and lower hydration heat than 3:4:3 system. The segregation range of cement pastes occurred over 175 mm in average diameter by mini slump and below $10;dynesec/cm^2$ of the plastic viscosity or below 50 cP of the yield stress by coaxial cylinder viscometer. It was observed that even if BFS and FA blended together admixture properties would remaine as they were separately. The properties of admixture would not be changed. On the above results, the decreased replacement ratio of OPC and increased replacement ratio of admixtures would be possible.
Key words: Fly ash, Blast furnace slag, Rheological properties, Blended cement, Fluidity
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