Research on freeze-thaw fatigue of asphalt mixture based on ADE theory

被引：0
|
作者：
Zhan, W. [1 ,2 ]
Gao, S. [3 ]
Yu, Y. Q. [1 ,2 ]
Xiao, D. Q. [1 ,2 ]
Wang, J. C. [4 ]
机构：
[1] Key Lab Rd & Bridge Detect & Maintenance Technol, Hangzhou, Zhejiang, Peoples R China
[2] Zhejiang Sci Res Inst Transport, Hangzhou, Zhejiang, Peoples R China
[3] Shenyang Jianzhu Univ, Sch Civil Engn, Shenyang, Liaoning, Peoples R China
[4] Zhejiang Univ, Inst Transportat Engn, Hangzhou, Zhejiang, Peoples R China
来源：
GREEN AND INTELLIGENT TECHNOLOGIES FOR SUSTAINABLE AND SMART ASPHALT PAVEMENTS, IFRAE 2021 | 2022年
关键词：
D O I：
10.1201/9781003251125-32
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
To study the effect of asphalt-aggregate ratio and gradation on freeze-thaw fatigue damage and the damage evolution mechanism of asphalt mixture, six Marshall specimens were designed for freeze-thaw indirect tensile fatigue test. The damage factor was defined based on accumulative dissipated energy(ADE), the variation of damage factor with freeze-thaw cycles and stress ratio was obtained, combined with damage evolution equation, the influence of asphalt-aggregate ratio and gradation on freeze-thaw fatigue damage and the damage evolution mechanism were analyzed. The results show that the ADE of the AC-13S with 5.8% asphalt-aggregate ratio is larger, which can bear more loads and has better antifreeze-thaw fatigue damage performance. The change rate of total accumulative dissipated energy decreases with the increase of freeze-thaw cycles, similar conclusions can be obtained for specimens under different stress. The evolution law of the first-order difference ADE change rate is different under different stress levels.
引用
收藏
页码：194 / 200
页数：7
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