Effect of Graphene on Modified Asphalt Microstructures Based on Atomic Force Microscopy

被引：28
作者：
Li, Xian [1 ]
Wang, Yanmin [1 ]
Wu, Yanling [1 ]
Wang, Huiru [1 ]
Wang, Qingliang [1 ]
Zhu, Xingxing [1 ]
Liu, Xiaocun [1 ]
Sun, Huadong [1 ]
Fan, Liang [2 ]
机构：
[1] Shandong Jiaotong Univ, Sch Traff & Civil Engn, Jinan 250300, Peoples R China
[2] Shandong Transportat Inst, Jinan 250031, Peoples R China
来源：
MATERIALS | 2021年 / 14卷 / 13期
关键词：
AFM; graphene; bee structures; phase transformation theory; anti-aging performance; MODIFICATION MECHANISM; BINDERS; PERFORMANCE; MORPHOLOGY; OXIDE; AFM;
D O I：
10.3390/ma14133677
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Atomic force microscopy (AFM) was used to explore the effects of graphene modifier on the microstructure of asphalt. The morphologies of the before- and after-aged base asphalt and modified asphalt were performed and compared with analysis. The formation mechanism of asphaltic "bee structures" and the influence mechanism of graphene on asphalt were discussed from the classical theory of material science (phase transformation theory and diffusion theory). The results show that graphene facilitates the nucleation of "bee structures", resulting in an increasing number and decreasing volume of "bee structures" in modified asphalt. Additionally, the anti-aging performance of the modified asphalt improved significantly because of graphene incorporation.
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页数：12
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