Clayey soils are used in various industrial applications as raw material. However, they are also used both as materials and soils on which constructions are built in the geotechnical engineering. Therefore, estimation of soil behavior in terms of design is vital. In this context, it is necessary to determine the engineering properties of the soils. There are voluminous study on the geology, mineralogy and chemistry of the clayey soils in the Central Anatolia, NiC de (Turkey). However, not many studies deal with their geotechnical properties. In the current study, the engineering properties of clayey soils are determined through laboratory tests on the clayey soil samples taken from the AraplA +/- and Kolsuz areas and also the comparison is made between clayey soils in the AraplA +/- and Kolsuz areas considering their geotechnical properties. As a result, it is observed that the fine-grained soils of the Kolsuz area are inactive and have low plasticity (CL) with average w (L) of 32 and w (P) of 19. The fine-grained soils of the AraplA +/- area have high plasticity (MH) with average w (L) of 96 and w (P) of 57 and are active. It is also found that while the fine grained soils of the Kolsuz area has almost no swelling potential, those of the AraplA +/- area has high swelling potential based on their mineralogical contents, consistency limits, activities and swelling pressures.