FILLING MATERIAL OF CAISSON USING COMPOSITE SLAG

摘要

Disclosed is a filling material of a caisson using composite slag which can reduce the lateral stress against an inner wall of a caisson and can adequately adjust a property of the filling material. The filling material of a caisson is filled in a void space in the hollow caisson body; has immersion expansion ratio of 1.5% or less, unit volume weight of 1500 kg/m^3 or more, unit volume weight of 900 kg/m^3 or more under water, and internal friction angle of 30-40°; applies 1/3-1/5 of allowable inner wall stress against an inner wall of a caisson; and includes a steel slag which is age-treated for more than six months and a blast furnace slag which is age-treated for more than three months that are mixed at a ratio of 7:3 to 9:1 by weight%.