Verification of Bituminous Mixtures' Rheological Parameters through Rutting Test

ABSTRACT The results of creep tests carried out on 27 bituminous mixtures in NAT are presented. The tests have shown that the Bürgers model's parameters determined after the third loading-unloading cycle have the smallest approximation errors. The rheological parameters determined in this way were verified in the FPRT for which the authors have developed a theoretical model based on FEM. Close agreement between the rut depth calculated according to the proposed model for the rheological para meters and the measured rut depth was found.