Effect of Morphology on High-Temperature Rheological Properties of Polymer-Modified Bitumen

  • Jiqing ZhuEmail author
  • Xiaohu Lu
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 20)


This paper employs isothermal annealing at different temperatures to obtain different microstructures of the same modified bitumen with styrene-butadiene-styrene (SBS) copolymer. The effect of polymer-modified bitumen (PMB) morphology on high-temperature rheological properties is investigated based on the same material. The characteristic wavelength ξ of PMB microstructure was calculated from the fluorescence microscopy images. Dynamic shear rheometer (DSR) measurements and multiple stress creep and recovery (MSCR) tests were performed. The PMB morphology-rheology correlation was discussed within the studied temperature and frequency range. Comparing with a binary droplet-in-matrix microstructure, a homogenous PMB morphology tends to store more energy during shear cycles and reach higher recovery after the loading.


Polymer-modified bitumen Morphology Rheology Creep 


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© RILEM 2019

Authors and Affiliations

  1. 1.Swedish National Road and Transport Research Institute (VTI)LinköpingSweden
  2. 2.Nynas ABNynäshamnSweden

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