Analysis of viscoelastic properties of modified asphalt via dynamic mechanical method

作者：Zhan, Xiao-Li^*; Wang, Duan-Yi

来源：Journal of South China University of Technology(Natural Science Edition), 2010, 38(3): 37-40+52.

DOI：10.3969/j.issn.1000-565X.2010.03.007

• Complex morphological structure
• Han curve
• Macroscopic mechanical properties
• Modified asphalts
• Road engineering
• Visco-elastic parameters
• Viscoelastic properties
• Viscoelastic properties of asphalt

As the existing evaluation index of viscoelastic properties of asphalt is inapplicable to modified asphalt, the viscoelastic properties of both base asphalt and modified asphalt are analyzed by using the dynamic mechanical method. In the investigation, the parameters describing the viscoelastic properties at different temperatures and frequencies are measured, and the variation laws of both Han curves and dynamic viscoelastic parameters are analyzed. The results indicate that the temperature dependence of Han curves of modified asphalt varies at different temperatures, that there exists a great difference in viscoelasitc properties between base asphalt and modified asphalt due to the complex morphological structure of modified asphalt, and that the dynamic mechanical analysis is effective in revealing the relativity between the macroscopic mechanical properties and the microstructure of modified asphalt.

• 出版日期2010-3
• 单位华南理工大学; 浙江大学