就地热再生沥青混合料的材料组成波动及控制策略

doi:10.11896/cldb.22030098

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Abstract The material composition volatility of hot in-place recycling asphalt mixture (HIRAM) has an important impact on the construction quality and durability of asphalt pavement during the construction process. To control the material composition volatility of HIRAM, in this work, the material composition control strategy for the design stage of HIRAM was proposed. To this end, the HIRAM material composition categories were analyzed, the relational model between the different materials was established, and a strategy for dividing the construction unit of the hot in-place recycling maintenance section was proposed by considering the perspective of refinement control. In addition, according to the relational model between recycled asphalt pavement (RAP) material composition and the amount of hot mix asphalt (HMA), the HIRAM material composition volatility control strategy was proposed by using Fréchet similarity and K-Means clustering theory from the aspect of controlling the volatility of HIRAM material composition. Furthermore, the feasibility of the control strategy was demonstrated in the project of the Dechang Expressway in Jiangxi Pro-vince. The results show that the HIRAM material composition control strategy can effectively control the volatility to meet the design and/or specification requirements when RAP material composition and HMA ratio are significantly different. Meanwhile, the results of the study can provide a new way to control the HIRAM material composition and ensure the construction quality during the hot in-place recycling construction process.

Key words： road engineering hot in-place recycling asphalt mixture (HIRAM) material composition volatility control strategy

Published: 25 August 2022 Online: 2022-08-29

CLC number:

U416.2

Fund:National Natural Science Foundation of China(52111530134), Natural Science Foundation of Jiangxi Province(20202BABL214046), Science and Technology Research Project of Jiangxi Provincial Department of Education(GJJ210623, GJJ210645), Key R & D Projects of Xinjiang Uygur Autonomous Region (2021B01005), and Natural Science Foundation of Chongqing(cstc2020jcyj-msxmX0431).

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	Articles by authors
	YAO Yuquan
	YANG Jiangang
	GAO Jie
	HE Liang
	XU Jing

Cite this article:

YAO Yuquan,YANG Jiangang,GAO Jie, et al. Material Composition Volatility and Control Strategy for Hot In-place Recycling Asphalt Mixture[J]. Materials Reports, 2022, 36(16): 22030098-10.

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http://www.mater-rep.com/EN/10.11896/cldb.22030098 OR http://www.mater-rep.com/EN/Y2022/V36/I16/22030098

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