文章摘要
Preparation and Property Analysis of Graphene Oxide/Rubber Modified Asphalt
Received:February 01, 2021  Revised:February 01, 2021
DOI：10.12136/j.issn.1000-890X.2021.10.0735
Key Words: graphene oxide；rubber modified asphalt；preparation process；micro action mechanism；storage stability
Author NameAffiliationE-mail
LIU Aihua JSTI Group Co. ，Ltd；National Engineering Laboratory for Advanced Road Materials 1021894136@qq.com 
LIU Linlin* JSTI Group Co. ，Ltd；National Engineering Laboratory for Advanced Road Materials 1021894136@qq.com 
SI Jingjing Hehai University  
WU Chunying JSTI Group Co. ，Ltd；National Engineering Laboratory for Advanced Road Materials  
LI Yali JSTI Group Co. ，Ltd；National Engineering Laboratory for Advanced Road Materials  
LU Yong JSTI Group Co. ，Ltd；National Engineering Laboratory for Advanced Road Materials  
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Abstract:
      Through the penetration，softening point and ductility tests，the effect of high-speed shear process on the properties of graphene oxide/rubber modified asphalt were analyzed，the effects of ultrasonic dispersion on the storage stability of graphene oxide/rubber modified asphalt were investigated by dynamic viscosity and softening point segregation difference tests，and the micro action mechanism of graphene oxide on rubber modified asphalt was discussed by Fourier transform inrfared spectroscopy，scanning electron microscopy and differential scanning calorimetry，etc.The results showed that the agglomeration of graphene oxide could be overcome by high-speed shear＋ultrasonic dispersion process，the optimal high-speed shear rate was 4 500 r·min-1，and the optimal shear time was 40 min.Graphene oxide could improve the storage stability and mechanical properties of rubber modified asphalt.The physical interaction between graphene oxide and rubber modified asphalt was dominant，graphene oxide could reduce the content of phase change components in rubber modified asphalt or reduce its transition strength to make rubber modified asphalt system tend to be stable，and improve the temperature sensitivity and high temperature rutting resistance of rubber modified asphalt.
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