温拌胶粉改性沥青-集料粘附性及其体系水稳定性分析

doi:10.11896/cldb.21010186

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Abstract Through the contact angle measurement and atomic force microscope (AFM) test, modified asphalt-aggregate adhesion changes of the pre-aging and post-aging rubber powder (CR), EM type warm mixed rubber powder (CR-EM) and SDYK type warm mixed rubber powder (CR-SDYK), are analyzed from the macro and micro perspectives, and at the same time, the peeling work model is used to explore the water stability of the system, and the reliability of the results is verified by improving the water boiling method. The results show that the adhesion and water stability of the asphalt-aggregate system showed the same order, CR-SDYK>CR-EM>CR, and the adhesion between limestone and asphalt is better; it is found that the microscopic surface energy and adhesion work of the three asphalts before and after aging are strongly correlated with the macroscopic surface energy and adhesion work, respectively, indicating that the microscopic properties of the materials affect their macroscopic properties and AFM-QNM test method is useful for evaluating adhesion of asphalt aggregates with certain accuracy and stability; the three indicators for evaluating the water stability of the asphalt-aggregate system are compared through the analytic hierarchy process (AHP), and it is found that the index ER₂ has the maximum weight of 0.377 9. It is recommended to use the index ER₂ to characterize its water damage resistance, and use the improved boiling method to verify the reliability of the AHP method.

Key words： modified asphalt with warm mix rubber powder macro and micro methods surface energy adhesion water stability

Published: 25 April 2022 Online: 2022-04-27

CLC number:

U414

Fund:National Natural Science Foundation of China (11762012) and Inner Mongolia Natural Science Foundation (2019MS05079).

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	Articles by authors
	WANG Lan
	LUO Xuedong
	ZHANG Qi
	ZHOU Xiaodong
	LI Chao

Cite this article:

WANG Lan,LUO Xuedong,ZHANG Qi, et al. Analysis of Adhesion of Warm Mix Rubber Powder Modified Asphalt Aggregates and Water Stability of the System[J]. Materials Reports, 2022, 36(8): 21010186-4.

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http://www.mater-rep.com/EN/10.11896/cldb.21010186 OR http://www.mater-rep.com/EN/Y2022/V36/I8/21010186

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