High-Temperature Deformation and Skid Resistance of Steel Slag Asphalt Mixture Under Heavy Traffic Conditions

被引:0
|
作者
Yang, Meikun [1 ]
Chang, Haolei [2 ]
Li, Wanpeng [1 ]
Wang, Huifeng [3 ]
Lin, Jun [4 ]
Tong, Zheng [2 ]
Zhang, Weiguang [2 ]
机构
[1] Shandong Prov Commun Planning & Design Inst Grp Co, Jinan 250101, Peoples R China
[2] Southeast Univ, Sch Transportat, Nanjing 211189, Peoples R China
[3] Shanxi Traff Maintenance Grp Co Ltd, Taiyuan 030006, Peoples R China
[4] Jiangxi Prov Highway Engn Testing Ctr, Nanchang 330006, Peoples R China
关键词
steel slag asphalt mixtures; high-temperature stability; low-temperature crack resistance; skid resistance; fatigue resistance;
D O I
10.3390/buildings14123990
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This study investigates the effects of long-term heavy traffic loading on the performance of steel slag asphalt mixtures (SSAMs), including their high-temperature stability, low-temperature crack resistance, water stability, skid resistance, fatigue resistance, and volumetric stability. AC-13 asphalt mixtures with steel slag contents of 0%, 25%, 50%, 75%, and 100% were prepared and used in rutting tests, splitting tests, immersion stability tests, pendulum tests, and four-point bending fatigue tests. The effects of heavy traffic on the high-temperature deformation resistance and skid resistance of the SSAMs were considered by increasing the tire pressure in the rutting test. The results indicated that the high-temperature stability and fatigue resistance first increased and then decreased with the increase in steel slag content, with optimal contents of 75% and 50%, respectively. The low-temperature crack resistance and skid resistance increased with the increase in steel slag content. The volumetric stability decreased with the increase in steel slag content, but the volume expansion rate was less than 1.5% for all SSAMs. Under heavy traffic conditions, the permanent deformation and skid resistance value of the SSAMs significantly decreased. The permanent deformation was minimized when the steel slag content reached 75%. At the same tire pressure, the skid resistance of the SSAMs increased with a higher steel slag content, while the rate of increase slowed down. At the same steel slag content, the skid resistance decreased as the tire pressure increased, while the rate of decrease became slower.
引用
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页数:18
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