Toward to a viscoelastic fatigue and fracture model for asphalt binder under cyclic loading

被引：12
作者：
Wang, Chao [1 ]
Sun, Yanguang [1 ]
Ren, Zhengyang [1 ]
机构：
[1] Beijing Univ Technol, Dept Rd & Urban Railway Engn, Beijing 100124, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 168卷
基金：
中国国家自然科学基金;
关键词：
Asphalt; Fatigue; Fracture; Crack initiation; Crack propagation; Fatigue life; TWISTED RUBBER DISKS; CONTINUUM DAMAGE MODEL; CRACK-GROWTH; FAILURE CRITERION; NONLINEARITY; MIXTURES; BEHAVIOR;
D O I：
10.1016/j.ijfatigue.2022.107479
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper presents a viscoelastic fatigue and fracture (VEFF) modeling and its preliminary application to asphalt binder under cyclic loading. Both traditional time sweep (TS) fatigue test and linear amplitude sweep (LAS) test are performed. The failure definition is unified from the peak of fracture energy. The binder fatigue performance is dominated by its resistance to crack propagation. A mechanistic criterion paradigm is established to be independent of the strain ramping rate in LAS and strain amplitude in TS tests. The proposed model is verified by various binders, demonstrating the reasonable use of the LAS as an accelerated fatigue protocol.
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页数：17
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