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Appl. Sci. 2017, 7(10), 1088; doi:10.3390/app7101088

Research on the Mechanical, Thermal, Induction Heating and Healing Properties of Steel Slag/Steel Fibers Composite Asphalt Mixture

1
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
2
Key Laboratory for highway engineering in special regions of the Education Ministry of China, Chang’an University, Xi’an 710064, China
3
Faculty of Civil Engineering and Geosciences, Micromechanics Laboratory, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
4
Zhejiang Provincial Institute of Communications Planning, Design & Research, Hangzhou 310015, China
*
Authors to whom correspondence should be addressed.
Received: 13 September 2017 / Revised: 4 October 2017 / Accepted: 4 October 2017 / Published: 20 October 2017
(This article belongs to the Special Issue Self-Healing Asphalt)
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Abstract

In this paper, steel slag/steel fiber composite asphalt mixture were prepared. The effects of the addition of steel slag and/or steel fibers on the mechanical, thermal, induction heating and healing properties of asphalt mixture were investigated. The results showed that adding steel slag and/or steel fibers improves the water stability, particle loss resistance and fracture energy of asphalt mixtures. The addition of steel fibers increased the thermal conductivity and thermal diffusion of the asphalt mixture, and steel slag showed a reverse effect. Steel slag asphalt mixture cooled more slowly than steel fiber asphalt mixture, which is beneficial to crack healing of asphalt mixture. The composite of steel fibers and steel slag can enhance the induction heating speed, heating homogeneity and thus enhance the induction healing ratio of asphalt mixture. It is concluded that steel slag/steel fibers composite asphalt mixture achieves good mechanical and induction healing properties. View Full-Text
Keywords: asphalt mixture; steel fiber; steel slag; induction heating; healing asphalt mixture; steel fiber; steel slag; induction heating; healing
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Liu, Q.; Li, B.; Schlangen, E.; Sun, Y.; Wu, S. Research on the Mechanical, Thermal, Induction Heating and Healing Properties of Steel Slag/Steel Fibers Composite Asphalt Mixture. Appl. Sci. 2017, 7, 1088.

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