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영어

The viscosity of high-flowability paste is very high compared to ordinary concrete for the low water-binder ratio(W/B).
Therefore, high-flowability concrete is positively necessary to high-range water reducing agent. High-Flowability paste can make much higher fluidity with no occurrence of segregation, by its higher viscosity and lower yield value than ordinary concrete.
The flowability of high-flowability paste must be evaluated not only by convention consistency test such as slump test but also by the base of the rheological properties of the fresh concrete.
The purpose of this study is to analyze the physical properties of high-flowability paste according to the replacement ratio of the Polycarboxylate high-range water reducing agent.; high-flowability paste is considered as Bingham plastic fluid with the rheology parameters of the plaste viscosity and yield value.