Abstract
The workability of high-strength concrete with high-performance AE water reducing agent or various kinds of admixture cannot be evaluated only by conventional slump test because of its high viscosity. Therefore, it is important to establish a method for evaluating quantitatively workability of such concrete based on rheological properties such as yield value and plastic viscosity. In this report, apparent yield values and plastic viscosity of various concretes have been measured by means of Two-Point Method which had been made clear to be applicable to high-strength concrete. As a result, the effects of mix proportion factors on rheological properties have been clarified and flow properties among various concretes have been classified in terms of yield value and plastic viscosity.
