Effect of non-homogeneity of Pliocene clays in the vicinity of Warsaw and their physical properties

Non-homogeneity of soils is the reason for considerable variability of their properties and the problems related with interpretation of geotechnical parameters at the same time. The paper presents and discusses results of examination of physical properties of Pliocene clays as well as their variability in the profile of an experimental plot in Stegny district, Warsaw. Alogn the thickness, there appear changes in the amount of clay fraction, water content, liqudity index and density of soil within layers of soils. These properties can constitute leading features for the analysis of strength, deformation, filtration, consolidation and other parameters. The determination of the character of changes in these properties gives an opportunity for separating soils behaving in a similar way in the section of the subsoil.