Fatigue behavior of polypropylene fiber reinforced concrete under constant and variable amplitude loading

被引：22
|
作者：
Mohamadi, M. R. [1 ]
Mohandesi, J. Aghazadeh [1 ]
Homayonifar, M. [1 ]
机构：
[1] Amirkabir Univ Technol, Min & Met Engn Dept, Tehran, Iran
来源：
JOURNAL OF COMPOSITE MATERIALS | 2013年 / 47卷 / 26期
关键词：
Fatigue; fiber-reinforced concrete; crack growth; variable amplitude loading; damage curve approach; LIFE PREDICTION; DAMAGE RULE; FRACTURE; RELIABILITY; PERFORMANCE; STRENGTH;
D O I：
10.1177/0021998312464083
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
In this study, fatigue behavior of polypropylene fiber reinforced concrete has been studied under constant and variable amplitude loading. Crack length was measured during flexural fatigue test under three loads. Accordingly, damage curves were determined as function of stress levels. The results ascertained that the presence of 1wt% polypropylene fibers considerably increases resistance against fatigue crack growth under constant amplitude loading. Under variable amplitude loading, it was found that the damage curve approach predicts the fatigue life with 13-15.8% estimation error, whereas linear model predicts the fatigue life with 36.8-56.5% estimation error.
引用
收藏
页码：3331 / 3342
页数：12
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