Assessment Of Collapse Potential Of Nanomaterial Improved Collapsible Soils

Abstract

Collapsibility refers to the sudden failure of soil due to the loss of cohesive forces between its particles. Collapsibility has significant challenges in construction, making it essential to analyze and enhance soil behavior. In this study, the impact of nanomaterials on collapsibility potential was investigated. A soil with high collapsibility potential from the Allahabad region in Kerman was selected, and the effects of adding Nano silica, Nano Clay, Nano Aluminum Oxide, and Nano Calcium Carbonate at different percentages on the soil's volume change, collapsibility potential and shear strength were examined. The results indicated that adding nano-silica and nano-clay significantly reduced the soil's potential for collapsibility by modifying its structure. Nano Calcium Carbonate and Nano Aluminum Oxide had a smaller impact on reducing collapsibility. Nano silica and Nano Clay increased the Adhesion Coefficient, while Nano Calcium Carbonate and Nano Aluminum Oxide had the most significant impact on the soil's Angle of Internal Friction. Scanning electron microscope (SEM) images revealed that the collapsible soil contained microscopic pores, which decreased with the addition of nanomaterials, resulting in a denser structure and reduced collapsibility potential.