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Mingyu Zhao
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China

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Journal article
Published: 08 September 2018 in Applied Sciences
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Polymer-modified rejuvenator has a different composition and dispersion behavior to traditional rejuvenators. The objective of this study was to investigate the micromechanism of polymer-modified rejuvenators on the behavior of aged asphalt binder. Firstly, gel permeation chromatography (GPC) analysis was conducted to determine the dispersion effectiveness. Secondly, the dispersal behavior of polymer-modified rejuvenators was studied by means of atomic force microscopy (AFM) and scanning electron microscopy (SEM). Rheological, toughness-tenacity, and force–ductility analyses of the rejuvenated asphalt binder were additionally performed. The results indicate that the contacted asphaltenic micelles in aged asphalt binder were dispersed by dispersion agent in the polymer-modified rejuvenator, and that the dispersion ability of the polymer-modified rejuvenator was promoted to the commercial rejuvenator level. Additionally, the polymer-modified rejuvenator was found to improve the rejuvenated asphalt binder’s resistance to deformation, through the formation of polymeric network structures in the asphalt binder. The results may be used to improve the performance of rejuvenated asphalt binder in recycled-pavement engineering.

ACS Style

Mingyu Zhao; Fan Shen; Qingjun Ding. Micromechanism of the Dispersion Behavior of Polymer-Modified Rejuvenators in Aged Asphalt Material. Applied Sciences 2018, 8, 1591 .

AMA Style

Mingyu Zhao, Fan Shen, Qingjun Ding. Micromechanism of the Dispersion Behavior of Polymer-Modified Rejuvenators in Aged Asphalt Material. Applied Sciences. 2018; 8 (9):1591.

Chicago/Turabian Style

Mingyu Zhao; Fan Shen; Qingjun Ding. 2018. "Micromechanism of the Dispersion Behavior of Polymer-Modified Rejuvenators in Aged Asphalt Material." Applied Sciences 8, no. 9: 1591.