Research on Rheological Performance of SBS Modified Asphalt at Low Temperature

In this paper, phase angle and viscous modulus were used to study the low temperature rheological performance (LTRP) of nine kinds of styrene-butadiene-styrene (SBS) modified asphalts, with three penetration grades of base asphalts (90, 110, and 130) and three contents of weight (3%, 4.5% and 6%) of linear SBS modifiers. The LTRP of modified asphalts was tested using the Gemini 150 dynamic shear rheometer produced by Bohlin Company at the temperatures ranging from −10 °C to 10 °C at intervals of 5 °C. Then, the influence of the modifier contents on the LTRP of SBS modified asphalt was analyzed. The result indicated that the modifier contents have a great influence, which is apparently confined by base asphalt's penetration grade. The higher the grade is, the greater the influence. Lastly, the influence of the base asphalt's grade on the LTRP of SBS modified asphalt was investigated. The analysis showed that it plays an important role in the LTRP. What's more, the impact degree is dependent on the modifier's contents. The more the content is, the greater the impact degree is.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 9-14
  • Monograph Title: Asphalt Material Characterization, Accelerated Testing, and Highway Management: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01140915
  • Record Type: Publication
  • ISBN: 9780784410424
  • Files: TRIS
  • Created Date: Sep 15 2009 5:15PM