Abstarct: Every year, a large amount of worn tires is imposed on the environment in the world, which causes a lot of environmental problems. So far, numerous studies have been conducted to investigate the impact of sub-tires in industries such as road construction, construction, automotive, marine industries, sports, animal husbandry and agriculture, and water supply. Although the advantages of using rubber, whether crushed or not, in improving soil properties in general have been proven, research in various fields continues. In this study, by physically modeling stone columns mixed with different percentages and sizes of crumb rubber in the laboratory, the effect of these mixtures on the behavior and bearing capacity of stone columns and the best percentage of crumb rubber mixing was investigated. In the first stage, initial experiments were performed to identify the properties of the materials used. These initial experiments included the minimum and maximum specific gravity determination, solid grain density and grading test to determine the grain size distribution in the soil sample, etc. In the second stage, in order to find the internal adhesion and friction, experiments were performed by large-scale direct cutting machine to evaluate the shear strength of the mixtures. Finally, in order to simulate the loading conditions and to provide the physical modeling conditions with a semi-real scale, a large-scale physical modeling device capable of static and dynamic loading was used. The results of the experiments showed that with the addition of medium-sized tires up to 40%, the bearing capacity of the stone column increased to about 17%, and with the increase of tires more than 40%, we saw a decrease in bearing capacity. Addition of more rubber particles to the mixture, due to the reduction of the frictional behavior of the sand grains with each other, the behavior of the materials tends towards elastic materials, and this reduces the bearing capacity; Therefore, the optimum bearing capacity of stone column containing crumb rubber compared to the sandblasting capacity of sandstone column without crumb rubber is mixing 40% of medium-sized crumb rubber, which in mixing 40% of medium-sized crumb rubber, in 20 mm stone column settling about 76%, in 40 mm We saw a 51% increase in bearing capacity and a 17% increase in carrying capacity at 60 mm.