基于SARA组分调和沥青流变性能、粘附性自愈合性能研究

doi:10.11896/cldb.24050184

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Abstract At present, there is insufficient research on the properties of SARA component on asphalt, the failure mechanism of asphalt-aggregate interface and the self-healing performance of interface adhesion. However, it is very difficult to extract asphalt components in large quantities. Therefore, in this work, the Corbett method was used to separate the components of matrix asphalt to prepare component-doped asphalt. The influence of SARA components on rheological properties was analyzed by the DSR frequency scanning test. The influence mechanism of SARA components on the self-healing performance of asphalt adhesion was studied by the SHRP net adsorption test and pulling test. Finally, the inf-luence mechanism of Sara components on its interface properties was analyzed using grey correlation analysis and linear correlation analysis. The results show that the increase of asphaltene and resin content will increase the adhesion strength of the interface, but it harms the self-healing performance of the interface, in which asphaltene has a stronger effect than resin. The increase in the content of aromatic and saturate components reduce the interfacial adhesion strength to some extent, but it promote interfacial self-healing. It is rich in aliphatic branched molecules, which can increase the fluidity of asphalt and promote interfacial healing. The influence of aromatic components is higher than that of saturate components. The grey correlation and linear correlation analysis show that the correlation between the interfacial adhesion strength of asphalt and a single component is lower than that of two components(light component and heavy component), and the self-healing performance of interfacial adhesion is linear with light component and heavy component to some extent.

Key words： pavement engineering asphalt adhesion performance SARA components rheological property

Published: 25 November 2024 Online: 2024-11-22

CLC number:

U416.2

Fund:Fundamental Research Funds for the Central Universities, CHD (300102211301, 310821173501, 300102214302).

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	Articles by authors
	HE Yinzhang
	XIONG Kun
	ZHANG Jiupeng
	LI Zhe
	LI Yan

Cite this article:

HE Yinzhang,XIONG Kun,ZHANG Jiupeng, et al. Study on Rheological Properties and Adhesion Self-healing Properties of SARA Doped Asphalt[J]. Materials Reports, 2024, 38(22): 24050184-8.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.24050184 OR http://www.mater-rep.com/EN/Y2024/V38/I22/24050184

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