Study the effects of filler particle size and filler/asphalt ratio on the high and low temperature performance of asphalt mastics

2nd International Conference on Frontiers of Materials Synthesis and Processing

Xing, Baodong^1 ; Fan, Weiyu^1 ; Lv, Xiaobo^1 ; Qian, Chengduo^1

China University of Petroleum, Qingdao

266580, China^1

关键词: Creep compliance;    Dispersion degree;    Filler particles;    High temperature rutting;    Imaging analysis;    Low temperature performance;    Rheological analysis;    Thermal cracking;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/493/1/012163/pdf
DOI  :  10.1088/1757-899X/493/1/012163

来源: IOP

【 摘 要 】

In this study, the conventional and rheological analysis methods are employed to evaluate the effects of filler particle size and filler/bitumen (F/B) ratio on the high and low temperature performance of asphalt mastics. It is found that the addition of mineral fillers can significantly improve the high temperature rutting resistance of asphalt mastics. Meanwhile, it is detrimental to thermal cracking behavior. As the increase of particle size, the percent recovery R, creep stiffness S and m-value increase, while non recoverable creep compliance Jnr decrease. In addition, scanning electron microscope (SEM) imaging analysis shows that the dispersion degree and the morphology of asphalt mastics with various particle sizes have the great differences.