The Role of the Cement, Lime, and Natural Pozzolan Stabilizations on the Mechanical Response of a Collapsible Soil

This paper presents an extensive array of laboratory investigation on collapse behavior and shear strength characteristics of collapsible soils at different initial structures. This study also clarifies the crucial role of chemical stabilization on the mechanical behavior and the workability of the collapsible soils using different percentages of various stabilizer agents. The effect of the curing time and the amount of the agents on the collapsibility, the unconfined compressive strength, the undrained shear strength, and the consistency of the treated collapsible soils were studied. The findings demonstrated that cement outperformed lime and natural pozzolan in improving the strength and engineering properties of these collapsible clays. The results indicated that adding cement to soil minimized the degree of collapsibility significantly and increased the undrained shear strength of soil up to 5 times.