Frontiers of Chemical Science and Engineering >

2011 , Vol. 5 >Issue 1: 35 - 42

DOI: https://doi.org/10.1007/s11705-010-0551-4

RESEARCH ARTICLE

Outdoor aging of road asphalt and SBS modified asphalt

  • Li XIANG 1 ,
  • Juan TU 2 ,
  • Jian CHENG , 3,4 ,
  • Guohe QUE 1
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  • 1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China
  • 2. Hubei Guochuang Advanced Material Ltd.Co., Wuhan 430073, China
  • 3. Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China
  • 4. Hubei Key Lab of Novel Reactor & Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430073, China

Received date: 25 Mar 2010

Accepted date: 18 Jul 2010

Published date: 05 Mar 2011

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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Abstract

The process of performance degradation of road asphalt (RA) is regarded as aging. At present, better understanding of the thermal-oxidative aging of asphalt is achieved and the corresponding method to evaluate this process is developed; meanwhile, photo-oxidative aging (aging in an atmospheric environment, which is referred to as “outdoor aging” in this paper) of asphalt remains at the initial stages of scientific exploration. The outdoor natural ultraviolet (UV) aging of RA and SBS modified asphalt (SBSMA) are investigated in this study. The experimental results show that the basic performances of RA and SBSMA present similar change tendencies. The softening point increased, while the penetration and ductility decreased as the outdoor aging time passed by, and the 5°C ductility (ductility measured at 5°C) of SBSMA decreased very quickly. The group components of RA and SBSMA also change during UV aging. The content of asphaltene rose and that of aromatics and saturates decreased, while the content of resins changed insignificantly. Moreover, the Fourier transform infrared (FTIR) graphs show that the content of sulfoxide and carbonyl groups in RA and SBSMA increased significantly during the outdoor aging process.

Key words： asphalt; SBS; modified road asphalt; outdoor aging; ultraviolet

Cite this article

Li XIANG , Juan TU , Jian CHENG , Guohe QUE . Outdoor aging of road asphalt and SBS modified asphalt[J]. Frontiers of Chemical Science and Engineering, 2011 , 5(1) : 35 -42 . DOI: 10.1007/s11705-010-0551-4

Acknowledgments

This study was supported by the State Key Laboratory of Heavy Oil Processing, China University of Petroleum, and the authors would like to acknowledge their financial support.

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