Abstract
It is important to calculate quantity of water in designing the mix proportion of self-compacting concrete precisely. From such a point of view, this study deals with what kind of physical properties of powder influence paste flow. The water layer model which involves flocculation of powder is proposed in this study. It was examined the relation of water layer thickness which is calculated using water layer model from the water powder volume ratio to paste flow.
The results indicated that paste flow and water layer thickness correspond directly, and a water powder volume ratio of paste is calculated from the size distribution of powder.
