Physical Homogenization and Chemical Stability of Nano-SiO2 Treated Loess

Abstract

This study presents a new improvement mechanism of nano-SiO₂ treated loess and assesses its effects on the soil environment. The results show that the nano-SiO₂ additive produces a larger and more uniform aggregate structure in the treated loess accompanying a novel homogenization process. It results in increases in unconfined compressive strength and Young's modulus. Meanwhile, the addition of small quantities of nano-SiO₂ also strikingly increases the mechanical properties. As a whole, nano-SiO₂ has potential for use as a cost-effective and environment-friendly stabilized additive.