Abstract
The preparation methods of asphalt binder samples have significant influences on the experimental results when the microscale analysis of asphalt binder was conducted by the Atomic Force Microscope (AFM) devices. In this paper, an unmodified asphalt binder was selected and then, the materials were prepared with three different preparation methods: the solvent method, the alcohol lamp method, and the oven method, respectively. Then, the phase analysis was chosen as the key parameter for comparison purpose; with following the concluded conclusion. Results indicate that the solvent method may partial damage the structure of asphalt binder and, potentially leads to the misestimation. Besides, the alcohol lamp method burned sample with a flame for the preparation; therefore, the fluctuated heating temperature will age the material is easily and the repeatable is not good. Consequently, the oven method was recommended due to it has the least effect on the materials’ structure and chemical property, and further investigation will be conducted.
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Wang, Z., Chang, R., Zhou, Z., Qin, Y., Wang, G. (2019). Investigation of the Asphalt Binder Sample Preparation Methods Based on AFM. In: Poulikakos, L., Cannone Falchetto, A., Wistuba, M., Hofko, B., Porot, L., Di Benedetto, H. (eds) RILEM 252-CMB Symposium. RILEM 252-CMB 2018. RILEM Bookseries, vol 20. Springer, Cham. https://doi.org/10.1007/978-3-030-00476-7_25
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DOI: https://doi.org/10.1007/978-3-030-00476-7_25
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