Abstract
There are a lot of experiences of using granulated blast furnace slag for port area. At the beginning of the utilization, there are a lot of unknown factors about the long term characteristics of the material. Solidification problem is one of the most interested unknown factors. In this study, geotechnical investigations have done in several sites and discussions as to the change of mechanical characteristics of the material in long term has done. It is clarified from this study that there are some large variance in mechanical characteristics of this material in-situ and this material will solidify if it is under the water table, its solidified strength is 85-1760kN/m2 and the internal friction angle is more than 37 degree in residual condition. The permeability of the material in the solid state is 10-3cm/sec.
