期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 217, 期 -, 页码 273-282出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.05.054
关键词
Graphene oxide (GO); Warm mix asphalt (WMA); Waste cooking oil (WCO); Moisture susceptibility; Performance evaluation
资金
- China Postdoctoral Science Foundation, China [2018M633003]
- Scientific Research Project of Hunan Provincial Education Department, China [18A176]
- Hunan Province Key Laboratory of Engineering Rheology, Central South University of Forestry and Technology, China [19HNKLE05]
- Changsha Science and Technology Project, China [kq1801081]
- Science and Technology Project of Yuhua District in Changsha City, China [YHKJ-2018-ZG-20]
The objective of this laboratory study was to evaluate the performance of hot mix asphalt (HMA) and warm mix asphalt (WMA) mixtures modified by graphene oxide (GO). The base asphalt has a 60/80 penetration grade and the warm mix additives are Sasobit and waste cooking oil (WCO), which were added at 3% and 5% by weight of asphalt binder, respectively. The performance of HMA and WMA mixtures was evaluated. The experimental results indicate that the addition of GO at 0.05% by weight of binder significantly increased the mixing and compaction temperatures of base asphalt mixture, whereas the addition of warm mix additive, either Sasobit or WCO, can effectively reduce the construction temperatures of GO modified asphalt mixture. The addition of GO can significantly improve the moisture resistance, high temperature rutting resistance, and compressive resilient modulus of asphalt mixture, but slightly compromise its low-temperature cracking resistance. In addition, Sasobit can compatibly work with GO to improve the performance of asphalt mixtures, and WCO can effectively improve the low-temperature cracking resistance of GO modified asphalt mixture. Aging test results showed that GO can enhance the (oxidative) aging resistance of asphalt mixtures, reduce the moisture susceptibility of the aged mixtures, and mitigate the detrimental impact of aging on their low-temperature performance. Published by Elsevier Ltd.
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