Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline
1
Key Laboratory of Road Structure and Material of Ministry of Transport (Changsha), Changsha University of Science and Technology, Changsha 410114, China
2
Department of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China
*
Author to whom correspondence should be addressed.
Materials 2020, 13(1), 69; https://doi.org/10.3390/ma13010069
Received: 4 December 2019
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Revised: 17 December 2019
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Accepted: 20 December 2019
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Published: 21 December 2019
(This article belongs to the Section Construction and Building Materials)
Tourmaline modified asphalt (TMA) binders were prepared with different modifier types and contents in this research. The routine properties, rheological properties, and aging resistance were evaluated to research the function of tourmaline on the performances of asphalt binders. Test results show that the storage stability can be improved significantly by the smaller particle size and negative-ion treated surface of tourmaline modifier. It indicates that the stiffness and rutting-resistance of TMA binder can be enhanced significantly, and the elastic component of the viscoelastic characteristic can also be increased. Moreover, the complex viscosity and the Zero Shear Viscosity (ZSV) values of tourmaline modified asphalt are increased within the test frequency range, which results in the improvement of deformation resistance of tourmaline modified asphalt. When mixed with asphalt, the tourmaline modifier maintains a two-phase structure, which results in the good rheological property for tourmaline modified asphalt.
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Keywords:
modified asphalt; tourmaline; negative ions treated; rheological property; aging resistance
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MDPI and ACS Style
Ye, Q.; Dong, W.; Wang, S.; Li, H. Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline. Materials 2020, 13, 69. https://doi.org/10.3390/ma13010069
AMA Style
Ye Q, Dong W, Wang S, Li H. Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline. Materials. 2020; 13(1):69. https://doi.org/10.3390/ma13010069
Chicago/Turabian StyleYe, Qunshan, Wenzhuo Dong, Shipei Wang, and Heng Li. 2020. "Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline" Materials 13, no. 1: 69. https://doi.org/10.3390/ma13010069
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