再生沥青混合料新-旧沥青扩散混合效率研究综述<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.011.015

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Abstract The diffusion and mixing degree between virgin asphalt/rejuvenator and aged asphalt determines the performance of recycled asphalt mixture. In order to analysis the interaction between virgin asphalt/rejuvenator and aged asphalt film that coated on RAP surface, the blending model, diffusion theory and evaluation methods of diffusions effect of asphalt are compared and analyzed based on the latest domestic and international research. There are some limitations in the blending model and diffusion mechanism of asphalt at present stage,which cantnot actually reflects the diffusion and mixing process between virgin asphalt/rejuvenator and aged asphalt, and the accuracy of the evaluation method for the diffusion efficiency and the degree of mixing between the virgin asphalt/rejuvenator and the aged asphalt should be discussed. The layered extraction, gel permeation chromatography (GPC), infrared spectroscopy measurement, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), atomic force microscopy (AFM) are proposed to study the diffusion process of virgin asphalt/rejuvenator, the mixing degree between virgin asphalt/rejuvenator and aged asphalt, regeneration condition of aged asphalt can be characterized.

Key words： diffusion recycled asphalt blending efficiency asphalt mixture

Published: 10 June 2017 Online: 2018-05-04

CLC number:

TB303

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	Articles by authors
	WEI Wanfeng
	GUO Peng
	TANG Boming

Cite this article:

WEI Wanfeng,GUO Peng,TANG Boming. Review of the Research on Diffusion Efficiency of Virgin-Aged Asphalt in Recycled Asphalt Mixture[J]. Materials Reports, 2017, 31(11): 109-114.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.011.015 OR https://www.mater-rep.com/EN/Y2017/V31/I11/109

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