Abstract
In this study, rheological properties of ternary system cement containing ground fly ash(F3, Blaine specific surface area 8,100 ㎠/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 ㎜ in average diameter by mini slump and below 10 dynesec/㎠ 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.
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