Study on the fusion degree of old and new asphalt based on rod-like thin layer chromatography

DOI

10.2991/978-94-6463-336-8_3How to use a DOI?

Keywords

Asphalt fusion behavior; rod-like chromatography analyzer; magnetite aggregate; fusion degree of new and old asphalt

Abstract

In order to quantify the fusion behavior of new and old asphalt during the hot recycling process, and to detect the degree of fusion of blended asphalt in different reclaimed asphalt pavement, this paper designs an experimental method to measure the fusion degree of new and old asphalt during the hot recycling process. This method uses magnetite aggregate instead of new aggregate to achieve the separation of new and old materials in the hot recycled asphalt mixture, and uses the “toluene extraction” method to separate the aggregate and asphalt in the hot reclaimed asphalt pavement. The rod-like thin layer chromatography is used to analyze the component changes of asphalt during the hot recycling process, and a formula for calculating the fusion degree of new and old asphalt is proposed. Reclaimed asphalt mixture from different sources are tested and the results show that it can accurately and effectively measure the fusion degree of new and old asphalt during the hot recycling process. The degree of fusion of blended asphalt in different milling materials varies greatly, mainly due to the complexity of milling processes and sources, but their fusion degree is less than 50%.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Junrui Huang
AU  - Zhaojie Zhang
AU  - Zhaodi Yuan
AU  - Huan Zhang
AU  - Xian Li
PY  - 2023
DA  - 2023/12/30
TI  - Study on the fusion degree of old and new asphalt based on rod-like thin layer chromatography
BT  - Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)
PB  - Atlantis Press
SP  - 12
EP  - 20
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-336-8_3
DO  - 10.2991/978-94-6463-336-8_3
ID  - Huang2023
ER  -