2020 Volume 76 Issue 2 Pages I_624-I_629
The mixture with dredged soil and converter steelmaking slag has the solidification property. However, the solidification strengths vary according to the differences in the clayey soil. The important factor of the strength improvement of the dredged soil mixed with steelmaking slag was considered as calcium silicate hydrate causes, C-S-H, which was formed by the reaction between portlandite in the steelmaking slag and amorphous silica in the clayey soil. This study aims to determine the effect of the amorphous silica contents in clay on the undrained shear properties of clayey soil mixed with steelmaking slag. The clayey soil containing different ratios of amorphous silica content were prepared by mixing kaolin clay and metakaolin. As a result, where the amorphous silica content ratio in clayey soil was 20% or less, the qmax increased as the amorphous silica contents in clay increased at the same curing time. In addition, when the mixture was solidified, the residual angle of internal friction φ0’res was 49 to 52 degrees.
