STRENGTH PREDICTION MODEL FOR DREDGED SOIL IMPROVED BY BASIC OXYGEN FURNACE SLAG

Abstract

 This study aims to build a strength prediction model for dredged soils improved by basic oxygen furnace slag. The mechanism for improving the strength of dredged soils is considered that amorphous silica in dredged soils and portlandite in basic oxygen furnace slag dissolve, and H₄SiO₄(aq) and Ca⁺⁺ form calcium silicate hydrate (C-S-H). Based on this hypothesis, equations to calculate reaction mass of C-S-H are proposed. The relationship between calculated reaction mass of C-S-H and uniaxial compressive strength of improved soils cured for 91 days shows a good correlation.