沥青四组分与不同加载模式下橡胶沥青零剪切黏度相关性

采用Cross、Carreau流动模型及Matlab、Origin计算软件对8种不同基质沥青加工而成的橡胶沥青零剪切黏度（Zero shear-rate viscosity，ZSV）进行拟合，以灰色关联理论方法分析沥青四组分与橡胶沥青ZSV的相关性，并讨论不同加载模式下橡胶沥青ZSV的变异性，研究影响橡胶沥青ZSV的敏感因素。结果表明：Cross模型对橡胶沥青样本数据的拟合程度较Carreau模型高；静态加载模式和动态加载模式下所拟合的橡胶沥青ZSV存在差异，重复蠕变试验蠕变阶段拟合结果和恢复阶段拟合结果处于同一数量级内，Brookfield黏度计测定拟合的橡胶沥青ZSV随着试验温度增加而减小；沥青四组分与橡胶沥青频率扫描试验、重复蠕变试验和不同温度橡胶沥青旋转剪切黏度关联结果一致，即芳香分对橡胶沥青ZSV敏感性最强。

Correlation between asphalt four components and asphalt rubber zero shear viscosity under different loading modes

The rubber asphalt was processed by the eight different matrix asphalts.The rubber asphalt zero shear viscosity(ZSV) was fitted by Cross flow, Carreau model and Matlab, Origin software.The correlation was analysised by the matrix four components and the rubber asphalt ZSV according to the grey correlation method theory.The rubber asphalt ZSV variability was discussed under different loading modes and the sensitive factors influencing the rubber asphalt ZSV were studied.The results show that the Cross model fitting degree to the rubber asphalt sample data is more than the Carreau model; The rubber asphalt ZSV is different fitted under the static load and dynamic load model; The repeated creep stage creep test fitting results and recovery phase fitting results are in the same magnitude order; The rubber asphalt ZSV measured by Brookfield viscosity decreases the increse of the test temperature; The correlation results of frequency scanning test, repeated creep test, different temperature and rubber asphalt rotary shear viscosity are consistent, namely that the aromatics are the strongest sensitivity according to ZSV of rubber asphalt.