The Effect of the Difference in Stone Ratios of Ca-Bentonite Produced Under The Same License On Swelling

Abstract

In this study, the effect of stone ratios of bentonite mines in different locations on swelling capacities was investigated. Bentonite is a type of clay that has a high swelling capacity and contains various clay minerals, especially montmorillonite. The swelling capacity directly depends on the amount of these activated clay minerals and the proportion of stones. In bentonites with a high stone content, as the proportion of non-clay materials (quartz, feldspar, etc.) increases, the swelling capacity decreases. Bentonites with high proportions of these stones do not absorb water, reduce the active surface area of bentonite and limit its swelling capacity. Since bentonites in different locations vary according to their formation processes and mineralogical composition, even mines with the same stone ratio can have different water holding capacity. In this context, there is an inversely proportional relationship between stone ratio and swelling capacity; However, it was concluded that this relationship was also affected by factors such as mineralogical structure, montmorillonite percentage and grain size distribution.