Abstract
The water retention curve, which represents the relation of water content and suction value of soils, cannot be uniquely specified even in the same material. It shows the hysteresis loops between the drying and the wetting process. And also it varies depending on initial conditions. In this paper, the dependency of the water retention curve on void ratio is examined. The void ratio dependency dominantly influences the air and the water entry characteristics of unsaturated soils. Finally an attempt to quantitatively express the water retention curve is made considering the void ratio dependency. The model proposed in this paper can be applied to prediction of unsaturated soil behaviors.
