Chapter
Jul 2, 2019
Electrical Conductivity and Rheological Properties of Asphalt Binder Containing Graphite
Authors: Xiaobo Wen [email protected], Haopeng Wang [email protected], and Jun Yang [email protected]Author Affiliations
Publication: CICTP 2019
Abstract
Asphalt generally behaves as an insulator. The addition of graphite can produce electrically conductive asphalt, which can be further manufactured as multifunctional asphalt concrete. The present study investigated the effect of graphite on the electrical conductivity and rheological characteristics of base asphalt. A novel electrical resistivity measuring method of asphalt binder was also introduced in detail. Various binder tests, including penetration, ductility, softening point, and dynamic shear rheometer (DSR) tests, were utilized to determine rheological properties of asphalt binder. Experimental results indicated that the conductivity of asphalt binder improved with the increasing content of graphite. Moreover, asphalt binder exhibited improved viscoelastic response and resistance to rutting due to the addition of graphite. However, the low-temperature performance of graphite modified asphalt was not encouraging from the ductility test. Therefore, asphalt binder containing graphite is promising to become novel road functional materials to meet both requirements of electrical conductivity and road properties.
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© 2019 American Society of Civil Engineers.
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Published online: Jul 2, 2019
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JSTI Group, Nanjing, P.R. China; High-Tech Industrial Park, 2200 Chengxin Rd., Nanjing 211112, China. E-mail: [email protected]
Faculty of Civil Engineering and Geosciences, Delft Univ. of Technology, Delft, Netherlands. E-mail: [email protected]
School of Transportation, Southeast Univ., Nanjing, P.R. China. E-mail: [email protected]
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