Microstructure morphologies of asphalt binders using atomic force microscopy
Microstructure morphologies of asphalt binders using atomic force microscopy
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DOI：
10.1007/s11595-016-1523-4
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发表时间：
2016-12
期刊：
影响因子：
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通讯作者：
Bo Li;Jinyu Yang;Z. Chen;Hailian Li
中科院分区：
文献类型：
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作者：
Bo Li;Jinyu Yang;Z. Chen;Hailian Li
采用原子力显微镜（AFM）研究了我国三种常用沥青（SK、克拉玛依和埃索）的微观结构形态。获得了形貌图和相衬图像。描述了地形剖面和三维图像。计算了显微组织的粗糙度。并对沥青的化学组成进行了测试，以解释沥青的微观结构机理。结果表明，利用原子力显微镜的形貌和相位图像可以较好地评价沥青结合料的微观结构。在本研究中，三种沥青的微观结构形态包括蜂状结构、地形剖面、三维图像和粗糙度存在显著差异。沥青结合料的微观结构存在三个不同的相。油源和沥青的化学组成，特别是沥青质含量对沥青的微观结构有很大的影响。
We investigated microstructure morphologies of three asphalts (SK, Karamay, and Esso) used in China using atomic force microscopy (AFM). The topography and phase contrast images were obtained. Topographic profile and three dimensional images were described. Roughnesses of microstructure were calculated. And the chemical compositions of asphalt were tested to explain the microstructural mechanism of the asphalt. The results show that the topography and phase image in atomic force microscopy are appropriate to evaluate the microstructure of the asphalt binder. There are significant differences in microstructural morphologies including bee-like structure, topographic profile, 3D image, and roughness for three asphalts in this study. There are three different phases in microstructure of asphalt binder. The oil source and chemical composition of asphalt, especially asphaltenes content have a great influence on the microstructure.