钢渣掺量对橡胶沥青混合料ARAC-13性能的影响

doi:10.11896/cldb.22080175

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Abstract To improve the comprehensive utilization rate and economic benefit of steel slag and optimize the environment, the volume substitution method was used to design the composition of steel slag asphalt mixture. The volume stability of steel slag asphalt mixture was analyzed by designing a new method of expansion failure test. Through the rutting test, freeze-thaw splitting test, and low-temperature beam bending test, the road performance of ARAC-13 asphalt mixture with different steel slag contents was studied, and the economic benefits of steel slag asphalt mixture pavement were evaluated based on the Coastal Highway Project in Guangxi. The results showed that the volume relative density of the ARAC-13 asphalt mixture and the optimum asphalt content are both positively correlated with the steel slag content. The increase in steel slag content will reduce the volume stability of the mixture and increase the risk of volume expansion. When the steel slag replaces the coarse aggregate with 100% volume, the dynamic stability, residual stability, freeze-thaw splitting strength ratio, maximum flexural strain (-10 ℃), pendulum value, and structural depth of the ARAC-13 asphalt mixture are improved, to some varying degrees. A large amount of steel slag (100vol%) can not only significantly improve the road performance of ARAC-13 asphalt mixture, but also save about 7.0% of the material cost, which has great application prospects and economic value.

Key words： steel scoria ARAC-13 pavement performance volume stability economic benefit

Published: 25 May 2023 Online: 2023-05-23

CLC number:

U414

Fund:National Key Research and Development Project (2021YFB2601000), Natural Science Foundation of Hunan Province (2020JJ5578, 2022JJ40479), and Hunan Provincial Department of Education Natural Science Fund Excellent Youth Project (20B033, 21B0296).

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	Articles by authors
	LIU Li
	ZHU Xiaoming
	LIU Zhaohui
	LI Wenbo
	YANG Chengcheng
	HUANG You
	LIU Leixin

Cite this article:

LIU Li,ZHU Xiaoming,LIU Zhaohui, et al. Effect of Steel Slag Content on Performance of Rubber Mixture ARAC-13[J]. Materials Reports, 2023, 37(10): 22080175-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22080175 OR http://www.mater-rep.com/EN/Y2023/V37/I10/22080175

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