Theory teaching
Unsaturated soil - need for research and laboratory testing. Subject and purpose of investigations of unsaturated soil. Historical development of mechanics of unsaturated soil. Fundamental physical and mechanical characteristics of unsaturated soil: soil phase relationships, stresses variants, suction, unsaturated shear strength. Constitutive relationships of unsaturated soils and their mechanical properties. Laboratory testing for defining mechanical properties of unsaturated soil. Applying the results of field investigations and laboratory testings of unsaturated soil in geostatical analyses: Lateral earth pressures of unsaturated soil, bearing capacity of unsaturated soil, stability of slopes in unsaturated soil.

Practical teaching
Exercises follow the material from lectures. Computing exercises and preparing seminar papers.

1. Gordana Hadži-Niković, 2005. Konstitutivne zavisnosti nezasićenih tla područja Beograda, doktorska disertacija, Rudarsko-geološki fakultet, Beograd
2. D.G. Fredlund & H.Rahardjo, 1993. Soil mechanics for unsaturated soils, Wiley&Sons, New York
3. G.S.Guan, H.Rahardjo, L.E.Chon.:Shear Strength Equations for Unsaturated Soil under Drying and Wetting. Journal og Geotechnical and Geoenvironmental engineering, ASCE, April.2010
4. Hadži-Niković, G., The influence of the grain-size distribution and soil structure on the unsaturated shear strength of loess sediments in Belgrade, central Serbia, Geološki anali Balkanskoga poluostrva 70, (83-91), Beograd, 2009.