Investigation of Rheological Characteristics of Carbon Fiber Modified Asphalt Binder

Abstract:

The performance of asphalt concrete is strongly dependent on the rheological properties of asphalt binders. In this paper, PAN carbon fiber was employed to improve the conductivity of asphalt mixture. To better understand the performance of conductive asphalt mixture, the present study investigated the rheological characteristics of asphalt binders containing PAN carbon fiber. Additionally, scanning electron microscopy (SEM) was used to elucidate the microstructure and interface reaction between the asphalt and the PAN carbon fiber. Experimental results showed that carbon fibers in the asphalt can overlap each other and form a three-dimensional space structure, which could transfer and buffer the stress. Moreover, the addition of PAN carbon fiber increases the complex shear modulus of modified asphalt binders, which means higher resistance to the permanent deformation. Furthermore, the reduction of phase angle implied the increment of elastic portion in the visco-elastic of carbon modified asphalt binder.

• Periodical: Key Engineering Materials (Volume 599)
• Pages: 182-186
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.599.182
• Online since: February 2014
• Authors: Ling Pang*, Peng Wang, Bo Li, Pan Pan, Shao Peng Wu
• Keywords: Asphalt Binder, PAN Carbon Fibres, Rheological Property

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