沥青再生过程中新旧混合沥青力学性能研究

Study on Mechanical Properties of New and Old Mixed Asphalt in the Asphalt Regeneration

随着我国的公路建设事业进入建养并重阶段,热再生技术作为一种重要的沥青路面养护技术受到工程界广泛关注。本文通过实验方法测试了沥青路面再生过程中新旧沥青融合后的混合沥青的高温粘度和服役温度区间内的粘弹性指标,并对实验结果进行数值拟合,得到混合沥青高温粘度的预测方程,可以指导再生沥青混合料的配合比设计及工程应用,从而完善沥青路面热再生技术体系。

With the development of highway construction in China,hot recycling technology,as an important maintenance technology of asphalt pavement,has attracted wide attention from the engineering community.In this paper,the high temperature viscosities and viscoelastic indexes of the mixture asphalt fused with old and new asphalt in recycling of asphalt pavement were tested by experimental method.In addition,the experimental results were numerically fitted to obtain the prediction equation of the high temperature viscosities of the mixture asphalt,which can be guide to the mix design and engineering application of the recycled asphalt mixture,thus improving the hot recycling technology of asphalt pavement.