Abstract
Asphalt modifier is traditionally obtained from petroleum byproduct, which has a high price and can not regenerate. This makes the traditional asphalt modifier not able to satisfy the economic requirement of increasing highway construction. Therefore, it is necessary to find a new modifier, which is economically efficient and also has good engineering performance. This paper introduces a recent development on the vulcanizing process of eucommia ulmoides gum（EUG） and the physical mechanics function of vulcanized gum, and explains its desirable engineering characteristic as well as its engineering application foreground. In this study, based on the characteristic of rubber-plastic unified material chart, vulcanized EUG is blended with asphalt binder as a modifier. The analysis of infrared spectrum and scan electricity mirror and asphalt basic index experiment are made. The result indicates that vulcanized EUG can improve both low temperature performance and high temperature performance of asphalt, which means that it is a feasible and desired choice for asphalt modifying.
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