荒漠地区常用沥青高温流变性能试验分析

为研究荒漠地区4种常用沥青流变性能，按照规范采用DSR试验设备对原样沥青的流变参数进行对比分析，得出荒漠地区四种常用沥青流变性能规律。结果表明：相位角δ变化规律排序为：橡胶改性沥青＞ SBS改性沥青＞KLMY 70＃＞KLMY 90＃；复数剪切模量变化规律排序为：橡胶改性沥青＞ SBS改性沥青＞ KLMY 90＃＞KLMY 70＃；抗车辙因子G*／sinδ变化规律排序为：橡胶改性沥青＞ SBS改性沥青＞ KLMY 70＃＞ KLMY 90＃。研究表明，掺入橡胶粉的改性沥青可显著提高沥青的抗剪切的流变性能。研究结果可为荒漠地区高温条件下掺入橡胶粉改性剂的沥青路面提供长寿理论支撑和技术指导。

Analysis of Rheological Properties with High-Temperature of Common Asphalt in Desert Areas

In order to study the rheological properties of four kinds of asphalt used in desert area , the rheological parameters of the original asphalt were compared and analyzed according to the standard DSR test equipment , and the rheological properties of the four kinds of asphalt used in desert area were obtained .The results show that the phase angle variation of sorting for rubber modified asphalt > SBS modified asphalt > KLMY 70# > KLMY 90# ;complex shear modulus of sorting for rubber modified asphalt >SBS modified asphalt > KLMY 90# > KLMY 70# ;rutting factor G* /sinδ changes sort for rubber change of asphalt >SBS modified asphalt >KLMY 70# >KLMY 90# .Studies have shown that incorporation of rubber powder modified asphalt can improve asphalt shear rheological properties ,research results under high temperature conditions in desert area incorporation of rubber pow der modifier of asphalt and longevity roadprovide theoretical support and technical guidance .