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ABSTRACT
The styrene-butadiene-styrene copolymer (SBS)–modified asphalt was aged by pressure aging vessel test. The effect of different content of rejuvenators on the physical and rheological properties of aged SBS-modified asphalt was investigated. The results showed that with the increase of the content, the physical and rheological properties of the aged SBS-modified asphalt are restored more significantly. Three kinds of rejuvenators were used to rejuvenate the properties of aged SBS-modified asphalt. It can be concluded that the improvement of rejuvenator-III on the properties of aged SBS-modified asphalt is the most obvious. The results also indicate that the rheological behavior of the aged SBS-modified asphalt is improved obviously by the rejuvenator.
Funding
This work was supported by the National Natural Science Foundation of China (No. 51308203), the Open Fund of State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology) (SYSJJ2015-12) and the Fundamental Research Funds for the Central Universities (Hunan University, No. 2012-161). The authors gratefully acknowledge their financial support.