Identification of interfacial transition zone in asphalt concrete based on nano-scale metrology techniques
Identification of interfacial transition zone in asphalt concrete based on nano-scale metrology techniques
复制标题
基于纳米计量技术识别沥青混凝土界面过渡区
DOI：
10.1016/j.matdes.2017.05.015
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发表时间：
2017-09
影响因子：
8.4
通讯作者：
Ying Yuan
中科院分区：
文献类型：
--
作者：
Xingyi Zhu;Feng Li;Lili Han;Ying Yuan
确定胶砂与集料表面（界面过渡区，ITZ）接触区域的性质，对于理解沥青路面断裂行为的一些机制非常有帮助。然而，用块体技术识别和研究界面区是相当困难的。在这项研究中，纳米尺度的计量技术，包括纳米压痕（NI），场发射扫描电子显微镜（FESEM），和能量色散X射线光谱仪（EDS），探索的微观力学，微观结构和化学性能的界面。试验结果表明，沥青混合料中存在界面结合区，界面结合区的厚度在5 ~ 20 μm之间。界面模量值介于骨料和砂胶之间。界面处的微观结构比砂胶更加致密。本研究对沥青混凝土界面过渡区的纳米尺度表征具有重要意义，可以为细观力学模型提供更真实的输入。
Identifying the nature of the region where the mastic meets the aggregate surface (interfacial transition zone, ITZ) is very helpful in understanding some mechanisms that govern the fracture behavior of asphalt pavement. However, it is rather difficult to identify and study ITZ by bulk techniques. In this study, nano-scale metrology techniques, including nanoindentation (NI), field emission scanning electron microscope (FESEM), and energy dispersive X-ray spectrometer (EDS), were employed to explore the micromechanics, microstructure, and chemical properties of ITZ. Experimental results show that the ITZ exists in asphalt mixture and the thickness of ITZ is in the range from 5 μm to 20 μm. The modulus value of ITZ was found between that of the aggregate and the mastic. The microstructure of ITZ was observed to be more compacted than that of mastic. This study contributes significantly to the nano-scale characterization of ITZ in asphalt concrete, which can provide more realist inputs for the micromechanical models.
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影响因子：
11.4
作者：
Wenzhong Zhu;Peter J.M Bartos
通讯作者：
Wenzhong Zhu;Peter J.M Bartos
DOI：
10.1016/s1065-7355(97)90001-8
发表时间：
1997-06
期刊：
Advanced Cement Based Materials
影响因子：
--
作者：
V. Li;H. Stang
通讯作者：
V. Li;H. Stang
影响因子：
1.7
作者：
B. Radovskiy
通讯作者：
B. Radovskiy
影响因子：
3.2
作者：
Tahmine Enayaty-Ahangar;S. Motahari
通讯作者：
Tahmine Enayaty-Ahangar;S. Motahari
影响因子：
11.4
作者：
Kim, Sun-Myung;Abu Al-Rub, Rashid K.
通讯作者：
Abu Al-Rub, Rashid K.