FIELD EXPERIMENT ON TURBIDITY DIFFUSION DURING DUMPING IMPROVED DREDGED SOIL BY STEELMAKING SLAG IN STRONG TIDAL CURRENT AND DEEP SEA AREA

Abstract

 Converter steelmaking slag is a reforming material with component and particle size adjustment, and improved dredged soil, which is a mixture of the reforming material and dredged soil generated by harbor works, develops strength by solidification. The improved dredged soil, which effectively combines natural and man-made materials, has been used effectively in environmental restoration projects. On the other hand, there are deepened sea areas caused by sand mining scattered in Seto Inland Sea, and these areas have not been restored naturally. In this study, we conducted field experiment where there are few past result of dumping sediment, to determine the feasibility and effectiveness of using the improved dredged soil in environmental restoration project (raising of sea bottom). At the same time, we conducted various field survey to understand turbidity diffusion etc.