PROBLEM TO BE SOLVED: To provide a method of predicting unconfined compressive strength of modified soil which can be obtained even with different modifiers or dredge soil.SOLUTION: In this method of predicting strength of modified soil, when a modifier containing calcium compounds and dredge soil are mixed and cured to obtain modified soil with improved strength, an elusion amount of hydroxide ion per unit mass of a modifying material in an elusion test using seawater and an elusion amount of silicon ion per unit mass of dredge soil in an elusion test using an alkaline solution of pH12 to 12.5 are used as an indicator for predicting unconfined compressive strength of modified soil that is actually acquired.SELECTED DRAWING: Figure 4
