The effect of the improvement of stabilized soil using lime and cement, and the collapse situation and the changes in unconfined compression strength after slaking history were experimentally investigated. In the case of a humid curing condition only, the cement-stabilized soil had a higher unconfined compression strength than that of the lime-stabilized soil, and the cement improvement was so effective in satisfying the type 4 construction generated soil standard. On the other hand, the

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... ng rate of the stabilized soil was faster in the lime-stabilized soil than that of the cement-stabilized soil. Next, the lime-stabilized soil had higher slaking resistance than that of the cement-stabilized soil, when the water content and the additive amount of stabilizer were in the same condition. In addition, from the results of the unconfined compression test for the specimen with the slaking history, it was clarified that moderate drying results in the increased strength of the stabilized soil, but a clear relationship was not particularly recognized between the strength and the slaking resistance.