8th International Scientific Research Congress, Çorum, Türkiye, 22 - 23 Ağustos 2020
This study presents a prediction process that is created to acquire plasticity based geotechnical properties of high plasticity clay soils through the usage of a laboratory test database. In geotechnical engineering applications, the plasticity characteristics of clayey soils are defined by the use of plasticity index value. Plasticity index is used to classify fine grained soils according to their similar mechanical properties of that is calculated by the difference between the liquid and plastic limit water contents. Based on the simplicity of the attainment process of plasticity parameters, they can be classified as the most used characteristics of soil masses. Numerous theoretical, experimental and empirical studies are collected in the literature to predict the important physical and mechanical properties of especially fine grained soils. Within this paper, some of the related studies which investigate the obtainment process of geotechnical properties of high plasticity clays all over the world are examined and a laboratory test database is organized by the use of Both Microsoft Excel and Minitab statistical software. Approximately 400 representative studies are saved which are evaluating the direct relationship between soil liquid limit and plasticity index. Simple relationships between plasticity characteristics and mechanical properties of fine grained soils are presented by the use of generated laboratory database both directly and indirectly with the use of statistical methods. The obtained relationships are verified with actual applications of the parameter tests. Consequently, the obtained equations are differentiated from other representative parameter prediction investigations with the use of a large data analysis process and verification analysis shows the applicability of the suggested equations.