介绍了沥青的老化机理,研究了2种基质沥青老化后表观粘度的变化,以表观粘度为参数建立了沥青一级老化动力学模型,并用该动力学模型对这2种沥青的抗老化性能进行了研究,求得了动力学参数。实验结果表明,这2种沥青老化后表观粘度均升高,AH-70沥青抗老化性能优于AH-90沥青。以表观粘度为参数建立的沥青老化动力学模型较好地表征了沥青老化过程。 The aging mechanism of asphalt was introduced. The changes of apparent viscosity of two kinds of asphalt were studied. The first-order kinetics model of asphalt was established by using apparent viscosity as parameter, and the aging resistance of the two kinds of asphalt Performance has been studied, obtained kinetic parameters. The experimental results show that the apparent viscosity of the two kinds of asphalt aging is increased, the anti-aging performance of AH-70 asphalt is better than the AH-90 asphalt. The asphalt aging kinetics model established with apparent viscosity as a parameter well characterizes the asphalt aging process.