USE OF ARTIFICIAL LIGHT WEIGHT MATERIALS (TREATED SOIL WITH AIR FORM) FOR PORT FACILITIES

Abstract

Recently, it has been difficult to secure a large disposal area to store removed soft clay. The recycle of dredged soil including soft clay is coming a social concern. The quays of caisson type in Kobe Sea Portwere destroyed by Hanshin-Awaji great earthquake. In the reconstruction, it was important consideration to reduce the earth pressure at the earthquake time, artificial light weight material (treated soil with air form) should be applied to back fill in the sea water. The authors carried out laboratory and field tests, and developed a new construction system. The new material was clarified to satisfy the design condition by the tracking tests.