Journal article
Performance evaluation of bitumen with a homogeneous dispersion of carbon nanotubes
Carbon (New York), Vol.158, pp.465-471
03/2020
Handle:
https://hdl.handle.net/2376/121338
Abstract
Nano-modified bitumen binders can be tailored to exhibit excellent properties for potential application in pavement engineering. However, a homogeneous dispersion of nano-materials in bitumen is still a challenge, which obscures the maximum property improvement of bitumen that can be achieved. In this study, a CNT sponge, which is a macroscopic assembly of nanotubes and represents one of the most promising lightweight carbon nanomaterials with homogeneous three-dimensional network and a high porosity, was used to reinforce bitumen. Bitumen can autonomously penetrate into the porous CNT sponge, and fill up all the pores, forming a bitumen/CNT nanocomposite with homogeneous CNT dispersion quality. We found that, the addition of CNTs significantly improves the performance of bitumen at elevated temperatures, as indicated by the much improved properties of stiffness, rutting resistance, creep and recovery behavior as well as high-temperature stability. Such effective modification of bitumen by CNT are ascribed to the highly uniform dispersion of CNTs, as well as the percolation structure formed throughout bitumen matrix. This study highlights the importance of CNT dispersion quality, and sheds light on the bitumen property improvement that could be achieved.
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Details
- Title
- Performance evaluation of bitumen with a homogeneous dispersion of carbon nanotubes
- Creators
- Qilin Yang - School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, 150090, PR ChinaXiaolin Li - Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, ChinaLiang Zhang - Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, ChinaYue Qian - Key Lab of Structure Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin, 150090, Heilongjiang, ChinaYuzhao Qi - Key Lab of Structure Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin, 150090, Heilongjiang, ChinaHamed Sadegh Kouhestani - Department of Civil and Environmental Engineering, Washington State University, Pullman, WA, 99164-2910, USAXianming Shi - Department of Civil and Environmental Engineering, Washington State University, Pullman, WA, 99164-2910, USAXuchun Gui - State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou, 510275, ChinaDawei Wang - School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, 150090, PR ChinaJing Zhong - Key Lab of Structure Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin, 150090, Heilongjiang, China
- Publication Details
- Carbon (New York), Vol.158, pp.465-471
- Academic Unit
- Civil and Environmental Engineering, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900612853301842
- Language
- English
- Resource Type
- Journal article