• 文献标题:   Performance of hot and warm mix asphalt mixtures enhanced by nano-sized graphene oxide
  • 文献类型:   Article
  • 作  者:   ZHU JC, ZHANG K, LIU KF, SHI XM
  • 作者关键词:   graphene oxide go, warm mix asphalt wma, waste cooking oil wco, moisture susceptibility, performance evaluation
  • 出版物名称:   CONSTRUCTION BUILDING MATERIALS
  • ISSN:   0950-0618 EI 1879-0526
  • 通讯作者地址:   Cent South Univ Forestry Technol
  • 被引频次:   13
  • DOI:   10.1016/j.conbuildmat.2019.05.054
  • 出版年:   2019

▎ 摘  要

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.