Silt soil containing sodium can undergo settlement and deformation when exposed to water. Given that a significant portion of the catchment area of Lake Urmia and the Tabriz plain is composed of fine-grained sodium saline soils, particularly silt, the primary objective of this research is to investigate the sediments of the lakebed. This study aims to prevent erosion and explore the potential for stabilizing sodium saline soils in the region, facilitating the geopolymerization process. To achieve this, perlite, known for its pozzolanic properties, was utilized in weight percentages of 3%, 5%, and 7%. It was combined with calcium hydroxide solution, serving as a catalyst, at percentages of 2%, 5%, and 7%. These mixtures were incorporated with the saline silty soil, and the samples were cured for one day. To evaluate the behavior of the stabilized soil, various tests, including standard compaction, uniaxial compressive strength, direct shear, and consolidation tests, were conducted. The results indicate that perlite effectively improves the behavioral characteristics of the soil. For instance, a combination of 3% perlite and 2% calcium hydroxide increases the uniaxial compressive strength at failure by 3.4 times, while a mixture of 3% perlite and 5% calcium hydroxide decreases the swelling of the stabilized soil by 82%.