Abstract
For expeditious and large construction of antiwashout underwater concrete such as the foundation of main towers of the Akashi Kaikyo Bridge, it is important to understand the condition of confluence and horizontal joints due to the pouring of concrete.
In this study, the effect of material composition and the placing method of long-scale pouring has been examined in addition to implementing large-scale experiments based on the results of the examination. As a result, the experiments confirmed the results of the examination.
Thus, it was made clear that a large and rapid construction of antiwashout underwater concrete can be constructed by using adequate materials, mix and placing and treatment of horizontal joints.
