Study on the Influence of Asphalt Content on Fatigue Life of Asphalt Mixture

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

Peng, Liu^1 ; Jian, Wang^2 ; Wei, Zhuang^2 ; Hao, Chen^2 ; Sai, Chen^2 ; Yu-Feng, Bi^2

Qilu Transportation Development Group, 250031, China^1

Shandong Provincial Communication Planning and Design Institute, 250031, China^2

关键词: Asphalt content;    Design index;    Fatigue failures;    Indirect tensile fatigue;    Mixture proportions;    Splitting strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/2/022023/pdf
DOI  :  10.1088/1755-1315/267/2/022023

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The fatigue failure form of asphalt pavement is not reflected in the design index of asphalt mixture proportion when determining the optimum asphalt content in the existing asphalt mixture proportion design. In order to solve the problem, the effect of different asphalt content on the fatigue life of three types of asphalt mixtures was studied by indirect tensile fatigue test.The results show that: (1) the splitting strength of asphalt mixture decreases with the increase of asphalt content; (2) the fatigue life of asphalt mixture increases first and then decreases with the increase of asphalt content; (3) the order of sensitivity of fatigue life of three types of asphalt mixture to asphalt content is: AC-5 > STRATA > ATB-25.Some useful suggestions are put forward for the design of asphalt mixture with good fatigue resistance.