Effect of SBS modifier dosage on the properties of SBS modified asphalt and its FTIR characterization

Hui-Jun Shao, Xu Yang, Ling-Ling Hong, Guang-Lai Jin, Zhi-Xiang Zhang

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther


To study the effect of SBS content on the elastic-plastic properties and durability of asphalt, the change in the spatial interaction network of SBS modified asphalt was explored. Modified asphalt with SBS dosages of 2.5%, 3.0%, and 4.0% were prepared and the elastic-plastic properties were tested. The changes were investigated through the FTIR test. The findings showed that by changing SBS content, the softening point, penetration index, ductility, and viscosity-toughness did not exhibit an obvious trend, indicating these indexes are not sensitive to SBS content. After the short-term aging, all the indexes showed a continuous trend, indicating that asphalt after short-term aging is more suitable to evaluate performance variance. The addition of SBS introduced new functional groups into the matrix. However, the increase of SBS content can only be seen in functional groups, but does not change the spatial network.

Original languageEnglish
Title of host publicationCICTP 2019
Subtitle of host publicationTransportation in China - Connecting the World - Proceedings of the 19th COTA International Conference of Transportation Professionals
EditorsLei Zhang, Jianming Ma, Pan Liu, Guangjun Zhang
PublisherAmerican Society of Civil Engineers
Number of pages12
ISBN (Electronic)9780784482292
Publication statusPublished - 2019
EventCOTA International Conference of Transportation Professionals (CICTP) 2019 - Nanjing, China
Duration: 6 Jul 20198 Jul 2019
Conference number: 19th
https://ascelibrary.org/doi/book/10.1061/9780784482292 (Proceedings)


ConferenceCOTA International Conference of Transportation Professionals (CICTP) 2019
Abbreviated titleCICTP 2019
Internet address

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