THE DRAGGING BEHAVIOR OF WASTE BY PILE DRIVING THROUGH THE BARRIER CLAY LAYER ON CONTROLLED COASTAL LANDFILL SITE

Abstract

 Up to now, utilization of the coastal waste landfill site remains at low level. In the advanced use of these sites by large structures, it is necessary to drive some foundation piles through the barrier clay layer. But in the actual field, there is concern that waste will be pulled into the clay layer or leaked to outside by piling. So in this research, we conducted a series of experiments examining the effect of pull-in prevention on pile tip shape and coat the absorbent polymer to pile surface by model experiment and X-Ray CT scanning. According to the experiments results, it was found that the pulled-in waste can be reduced by sharpening the tip of the pile. Also, on a pile that has an outer edge at the tip like a pile that has reinforcement band, it was found that the pulled-in waste can be reduced by coating the swelling material on pile surface.