The effect of network formation on the rheological properties of SBR modified asphalt binders

Yong Joon Lee, Lawrence M. France, Martin C. Hawley

Research output: Contribution to journalArticle

  • 15 Citations

Abstract

Styrene-butadiene rubber (SBR) was used to modify asphalt binders. The rheological and thermo-mechanical properties of the binders were invetigated using rotational vicometry, dynamic shear rheometry, and thermal mechanical analysis. The optimum SBR content and mixing procedure were determined based on the rheological properties of the asphalt/SBR blends. The addition of 3-5% (w/w) SBR resulted in enhanced high temperature performance of the binders. The SBR progresses from a dispersed polymer to local networks to a global network with increasing SBR content. This phenomenon is exhibited in rheological properties such as complex modulus and melt viscosity. It is also verified visually by using a Laser Scanning Confocal Microscope. Because of this network formation, the binders showed a large increase in the complex modulus which indicates resistance to rutting.

LanguageEnglish (US)
Pages256-263
Number of pages8
JournalRubber Chemistry and Technology
Volume70
Issue number2
StatePublished - May 1997

Profile

asphalt
Asphalt
Butadiene
Binders
Styrene
Rubber
styrene-butadiene rubber
Polymers
Microscopes

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

Cite this

The effect of network formation on the rheological properties of SBR modified asphalt binders. / Lee, Yong Joon; France, Lawrence M.; Hawley, Martin C.

In: Rubber Chemistry and Technology, Vol. 70, No. 2, 05.1997, p. 256-263.

Research output: Contribution to journalArticle

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