Proceedings of the 2024 6th International Conference on Structural Seismic and Civil Engineering Research (ICSSCER 2024)

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Viscosity Reduction Mechanism and Rheological Performance Analysis of Warm Mix Rubber Modified Asphalt

Authors
Yi Tian1, Wei Hong2, *, Luchun Yan3, Zijian Liu2
1Gansu Highway Traffic Construction Group Co., Ltd., Lanzhou, China
2Gansu Henglu Traffic Survey and Design Institute Co., Ltd., Lanzhou, China
3Observation and Research Base of Transport Industry of Long Term Performance of Highway Infrastructure in Northwest Cold and Arid Regions, Lanzhou, China
*Corresponding author. Email: hongw0238@163.com
Corresponding Author
Wei Hong
Available Online 29 October 2024.
DOI
10.2991/978-94-6463-556-0_20How to use a DOI?
Keywords
Warm mix; Rubber-modified asphalt; Rheological properties; Viscosity reduction
Abstract

A surface-active agent was added to the project in order to investigate the process of viscosity reduction in rubber-modified asphalt by the warmed mixing agent and its effects on rheological characteristics of asphalt. Different periods for preservation for warm-mix asphalt treated with rubber powder were created. Using a Brookfield viscometer, the viscosity change of the warm mix asphalt was measured, and bar chromatography were utilized to study the process of viscosity reduction. Using the DSR frequency and temperature scanning tests, the rheological characteristics of the warm mix asphalt were assessed. According to the research, the warm mix is primarily made up of volatile tiny molecules that successfully lower the viscosity of the asphalt. However, this also softens the asphalt and negatively impacts its resistance to low-temperature cracking, creep recovery, and high-temperature rutting. Asphalt aging is caused by volatile components releasing from the heated mix as storage time approaches. The warm mix asphalt showed high-temperature mechanical characteristics that were comparable to the original asphalt after 48 hours of storage.

Copyright
© 2024 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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Volume Title
Proceedings of the 2024 6th International Conference on Structural Seismic and Civil Engineering Research (ICSSCER 2024)
Series
Advances in Engineering Research
Publication Date
29 October 2024
ISBN
978-94-6463-556-0
ISSN
2352-5401
DOI
10.2991/978-94-6463-556-0_20How to use a DOI?
Copyright
© 2024 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.

Cite this article

risenwbib
TY  - CONF
AU  - Yi Tian
AU  - Wei Hong
AU  - Luchun Yan
AU  - Zijian Liu
PY  - 2024
DA  - 2024/10/29
TI  - Viscosity Reduction Mechanism and Rheological Performance Analysis of Warm Mix Rubber Modified Asphalt
BT  - Proceedings of the 2024 6th International Conference on Structural Seismic and Civil Engineering Research (ICSSCER 2024)
PB  - Atlantis Press
SP  - 163
EP  - 171
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-556-0_20
DO  - 10.2991/978-94-6463-556-0_20
ID  - Tian2024
ER  -