基于蠕变试验的沥青混合料非线性粘弹性模型研究

IIn order to better analyze the variation of stress and stain in asphalt mixture, the creep tests of asphalt beam were carried out at different temperatures though High and Low Temperature Bending Creep Apparatus. The creep compliance curves were obtained. The shift factors are calculated equation and the curve compliance mater curve are obtained by Williams-Landel-Ferry(WLF). According to creep property of asphalt mixture characterized by fractional exponential model. The non-linear of viscoelastic model was established. The result indicate that fractional exponential model shows good agreement with the experiment results, and is better simulate non-linear viscoelastic of asphalt mixture.