Research on Microstructure and Low Temperature Properties of Polymer Modified Asphalt

Abstract:

In view of three kinds of polymer modified asphalt, Compound rubber powder modified asphalt, rubber powder modified asphalt and SBS modified asphalt, were commonly used in the Inner Mongolia region, scanning electron microscope (SEM) were used to observe the macroscopic structure morphology of asphalt before and after aging , getting the influence of aging effect on modifier’s distribution state in asphalt and interface combination properties between the asphalt, that is, after aging, three kinds of modifier and asphalt interface characteristic deterioration. By using bending beam rheometer (BBR) three kinds of asphalt after aging were conducted trabecular bending creep experiments under different temperature, through analyzing the changing rules of bending creep stiffness modulus S and the value of m, it can be get that: composite rubber powder modified asphalt has the best low temperature performance , followed by the crumb rubber modified asphalt.

• Periodical: Advanced Materials Research (Volume 1094)
• Pages: 253-260
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1094.253
• Online since: March 2015
• Authors: Lan Wang, Yong Jie Jia*, Lei Feng
• Keywords: Bending Stiffness Modulus, Low-Temperature Characteristics, Microstructure, Polymer Modified Asphalt

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