Study on compression fatigue properties of ultra high toughness cementitious composites

被引：0
|
作者：
Li Q. [1 ]
Huang B. [1 ]
Zhou B. [1 ]
Xu S. [1 ]
机构：
[1] Institute of Advanced Engineering Structures and Materials, Zhejiang University, Hangzhou
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2016年 / 37卷 / 01期
关键词：
Deformation feature; P-S-N equation; Ultra high toughness cementitious composites; Uniaxial compression fatigue test;
D O I：
10.14006/j.jzjgxb.2016.01.015
中图分类号：
学科分类号：
摘要：
This paper presents a experimental study on compression fatigue properties of ultra high toughness cementitious composites (UHTCC). In this study, the fatigue life, deformation capacity, fiber failure mode and p-S-N relationship of ultra high toughness cementitious composites were investigated. It is observed that, the three-stage deformation pattern of ultra high toughness cementitious composites is similar to those of concrete and fiber reinforced concrete. In addition, different from concrete or fiber reinforced concrete, the maximum deformation of ultra high toughness cementitious composites at failure under fatigue load is larger than the monotonic envelope, which indicates this material owns higher deformation capacity and shows more ductility at failure. Moreover, the end of fibers on failure plane suffers from extrusion under fatigue load and shows a new failure mode, which is different from that of monotonic load. The fatigue life of ultra high toughness cementitious composites specimens obeys two-parameter Weibull distribution and the corresponding relationship between fatigue life and failure probability was given. When a failure probability p is given, the corresponding fatigue life N at certain stress level S could be calculated. The results of this investigation could be proposed for potential application of ultra high toughness cementitious composites. © 2016, Science Press. All right reserved.
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页码：135 / 142
页数：7
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