作者
Xiaohu Lu, Peter Sjövall, Hilde Soenen, Johan Blom, Martin Andersson
发表日期
2021/4/3
期刊
Road Materials and Pavement Design
卷号
22
期号
4
页码范围
852-870
出版商
Taylor & Francis
简介
Microstructures of bitumen surfaces (both air-cooled and fractured) were imaged by atomic force microscopy (AFM) and chemically characterised by time-of-flight secondary ion mass spectrometry (TOF-SIMS). For certain air-cooled bitumen surfaces, bee structures were observed by AFM, and chemical explanation by wax crystallisation was confirmed by TOF-SIMS analysis. Unlike the air-cooled surfaces, the fracture surfaces generally did not show clear structure patterns. Furthermore, TOF-SIMS analysis was conducted on the tube-like or worm structures which were generated by environmental scanning electron microscopy (ESEM) on the bitumen surfaces. In general, very small chemical differences were observed between the structured and unstructured areas, as well as between different areas of the structure. To understand the formation of the ESEM structures, possible contributing factors were examined …
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X Lu, P Sjövall, H Soenen, J Blom, M Andersson - Road Materials and Pavement Design, 2021