摘要
通过动态剪切流变仪研究五种沥青高温特性,结合沥青混合料车辙动稳定度,分析不同指标对沥青高温性能的辨别力。研究表明:等效粘度η′=sinδ^(-4.862 8)G~*/ω预估60℃粘度值与车辙动稳定度评价结果一致,真空毛细管测定SBS粘度值偏大。橡胶改性沥青She-noy参数、T_(G*/sinδ)、G~*/sinδ值均最大,但其动稳定度却低于复合改性沥青。复合改性沥青的评价有待进一步研究。
The paper evaluated high temperature performance of 5 different asphalt binders using DSR and combining with Dynamic Stability of the wheel tracking test for the 5 asphalt mixtures.The research showed that：equivalent viscosity（η＇= sinδ^（-4.8628）G＊/ω） ranked the same as that obtained from the repeat creep test,but vacuum capillary method got higher value when the sample was SBS modified asphalt.The rubber modified asphalt had the highest Shenoy factor,T_（G＊/sinδ）、G~＊/sinδ;but its Dynamic Stability was lower than complex modified one.It needed more attention to this problem.
出处
《石油沥青》
2011年第5期36-40,共5页
Petroleum Asphalt
关键词
高温性能
DSR
橡胶沥青
粘度
high temperature performance
DSR
rubber modified asphalt
viscosity
