Abstract
The pond at kobe airport is now reclaimed by using the dredged clay. It is urgent matter how to reduce the volume of the dredged clay with super high water content. In this study, the chemical as well as the physical properties of the clay were in detail examined. The variation of elastic shear modulus with water content was also examined in a consolidometer equipped with bender elements. The effects of flocculant to reduce the volume of the clay were examined in the laboratory. Also, the drainage performance of some PBDs was evaluated.