1. Ph.D. Candidate, Faculty of Civil Engineering, Deptartment of Geotechnics, CTU in Prague, Thakurova 7, Prague, 166 29, CZ, e-mail: vaclav.mraz@fsv.cvut.cz
2. Deputy Head, Faculty of Civil Engineering, Department of Road Structures, CTU in Prague, Thakurova 7, Prague, 166 29, CZ, e-mail: jan.valentin@fsv.cvut.cz
3. Ph.D. Candidate, Faculty of Civil Engineering, Department of Road Structures, CTU in Prague, Thakurova 7, Prague, 166 29, CZ, e-mail: jan.suda@fsv.cvut.cz
4. Researcher, Faculty of Civil Engineering, Department of Mechanics, CTU in Prague, Thakurova 7, Prague, 166 29, CZ, e-mail: lubomir.kopecky@fsv.cvut.cz