A mechanical model for three-phase permanent deformation of asphalt mixture under repeated load

作者：Zhao Yongli^*; Zhang Jiupeng

来源：Journal of Wuhan University of Technology-Materials Science Edition, 2009, 24(6): 1001-1003.

DOI：10.1007/s11595-009-7001-5

• asphalt mixture
• permanent deformation
• three phases theory
• triaxial repeated load

On basis of the Burgers model, a new model consisting of modified dashpot and Van Der Poel model was derived from rheological and viscoelastic theory. Subsequently, triaxial repeated load permanent deformation tests of AC16 asphalt mixtures were conducted to validate this new developed model. Parameters of new developed model were obtained by a nonlinear regression analysis of test data, and then permanent strains and flow number of each mixture were calculated. The experimental results prove that the new developed model can well describe three phases permanent deformation of asphalt mixture under repeated load and it can be used for pavement mechanical analysis and rutting prediction.

• 出版日期2009-12
• 单位东南大学; 长安大学