Strength and Micro-Mechanism Analysis of Cement-Emulsified Asphalt Cold Recycled Mixture

doi:10.3390/ma13010128

CQUET-IR

	Strength and Micro-Mechanism Analysis of Cement-Emulsified Asphalt Cold Recycled Mixture
	Pi, Yuhui 1; Li, Yan 2; Pi, Yingxing 1; Huang, Zhe 2; Li, Zhe 2
	2020
发表期刊	MATERIALS
EISSN	1996-1944
卷号	13 期号:1
摘要	The strength of EACRM (emulsified asphalt cold recycled mixture) is closely related to the properties and proportion of raw materials. In this paper, the strength formation mechanism of EACRM was first studied through microscopic analysis, and the influence regular of aggregate gradation, emulsified asphalt, water consumption, cement consumption, and other factors on its strength was analyzed through a series of laboratory tests. The analysis results show that the asphalt binder plays the role of cementing material in cement emulsified asphalt mortar. The combination of cement and emulsified asphalt is a physical combination. The hydration product not only increases the viscosity of asphalt cement, but also makes the surface of asphalt cement become uneven, which increases the adhesion area with the aggregate. Therefore, the microstructure of the interface between mortar and aggregate is improved. The bonding force of the interface and the mechanical properties of concrete are improved. Due to the influence of recycled asphalt pavement (RAP) materials, the excessive amount of emulsified asphalt and cement are not conducive to improve the strength of cold recycled mixture. Through experiments, the optimal amount of emulsified asphalt and cement is determined as 2.9% and 1.5%, respectively, for the RAP materials. At the same time, improving the performance of emulsified asphalt and adding quicklime and organic activator are also helpful to improve the strength of a cold recycled mixture.
关键词	cold recycled asphalt mixture emulsified asphalt strength microscopic mechanism
DOI	10.3390/ma13010128
收录类别	SCIE
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000515499300128
出版者	MDPI
原始文献类型	Article
出版地	BASEL
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.cqcet.edu.cn/handle/39TD4454/3593
专题	重庆电子科技职业大学
作者单位	1.Chongqing Vocat Inst Engn, Chongqing 402260, Peoples R China; 2.Changan Univ, Sch Highway, Xian 710064, Peoples R China
推荐引用方式 GB/T 7714	Pi, Yuhui,Li, Yan,Pi, Yingxing,et al. Strength and Micro-Mechanism Analysis of Cement-Emulsified Asphalt Cold Recycled Mixture[J]. MATERIALS,2020,13(1).
APA	Pi, Yuhui,Li, Yan,Pi, Yingxing,Huang, Zhe,&Li, Zhe.(2020).Strength and Micro-Mechanism Analysis of Cement-Emulsified Asphalt Cold Recycled Mixture.MATERIALS,13(1).
MLA	Pi, Yuhui,et al."Strength and Micro-Mechanism Analysis of Cement-Emulsified Asphalt Cold Recycled Mixture".MATERIALS 13.1(2020).

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