Abstract
At present, the treatment of construction waste soil is becoming a large scale environmental problem. The soil improvement method of using the construction waste soil instead of sand for sand compaction pile is expected to encounter above situation.
This paper reveals that the increase of shear strength on the surrounding clay takes place both when sand pile is driving and embankment load is applying independently, by model tests and numeical analyses. Based upon the experimental results, it is also investigated to apply the plastic boad drain for drainage.