Abstract
Hydraulic experiments were conducted using two-dimensional wave flume to clarify the characteristics of clay slip-out behavior under mixed sediments with different wave conditions and clay fraction. The results showed the mixed sediments exhibit the similar behavior of pure clay in the high clay fraction condition. From the results, it was implied that there is a threshold of clay fraction between pf =0.10 and pf = 0.20 to determine whether clay- or sand-dominant behavior. Moreover, the formations of a flow path near the surface and sublayers in the bed was confirmed with the vibration of different cycle according to the wave period in the case of pf = 0.20, and this flow path accelerate slip-out phenomenon of clay. Therefore, the significance of considering clay slip-out phenomenon is suggested to analyze characteristics of dynamic behavior of mixed sediments.
