合成材料老化与应用2024，Vol.53Issue(4)：52-57,6.
橡胶沥青流变特性与其混合料路用性能关联性分析
Analysis of the Correlation between the Rheological Properties of Rubber Asphalt and Its Mixture Pavement Performance
摘要
Abstract
The purpose of this study is to provide a theoretical basis for the structural design of rubber asphalt mixtures by demonstrating the correlation between the rheological properties of rubber asphalt and its pavement performance.In this paper,the high temperature stability and fatigue resistance of rubber asphalt mixture were studied through rut test and four-point bending test.The rheological properties of three kinds of rubber asphalt with different content of rubber powder were tested by dynamic shear rheological test(DSR).Besides,according to the time-temperature equivalence principle and Sigimoidal model,the complex shear modulus G*main curves of three kinds of rubber asphalt were established.Finally,the correlation between the rheological properties of rubber asphalt and its pavement performance was studied based on grey entropy correlation analysis method.The results show that:(1)Compared with conventional SBS asphalt mixture,rubber asphalt mixture has better high-temperature performance;(2)The fatigue performance of rubber asphalt is related to the type,grade and strain level of rubber asphalt;The fatigue resistance of rubber asphalt mixture can be effectively improved by increasing the content of rubber powder;The aggregate size of rubber asphalt mixture is negatively correlated with the fatigue resistance.(3)The G of different content of rubber asphalt increases with the increase of loading frequency.The frequency is positively correlated with the deformation resistance of rubber asphalt.When the frequency is the same,the phase angle of rubber asphalt increases with the increase of temperature.Besides,the temperature is negatively correlated with rutting factor and fatigue factor of rubber asphalt samples.(4)The grey entropy correlation analysis results show that the grey entropy correlation between rutting factor and fatigue factor of rubber asphalt and the dynamic stability and fatigue frequency of the mixture are greater than 0.900.It proves that the rheological properties of rubber asphalt can be directly used to evaluate the high temperature stability and fatigue resistance of rubber asphalt mixture.关键词
橡胶沥青/复数剪切模量/疲劳性能/高温稳定性/Sigimoidal模型/灰熵关联分析Key words
rubber asphalt/complex shear modulus/fatigue performance/high temperature stability/Sigimoidal model/grey entropy correlation analysis分类
交通工程引用本文复制引用
杨海峰,李阳,崔旭,张垚,孙超,骆妍..橡胶沥青流变特性与其混合料路用性能关联性分析[J].合成材料老化与应用,2024,53(4):52-57,6.基金项目
河北省交通运输厅科技计划项目(项目编号:JD-202002). （项目编号:JD-202002）
