Compressive fatigue damage and failure mechanism of fiber reinforced cementitious material with high ductility

被引：110

作者：

Li, Qinghua ^{[1
]}

Huang, Botao ^{[1
]}

Xu, Shilang ^{[1
]}

Zhou, Baomin ^{[1
]}

Yu, Rena C. ^{[2
]}

机构：

[1] Zhejiang Univ, Inst Adv Engn Struct & Mat, Hangzhou, Zhejiang, Peoples R China

[2] UCLM, ETSI Caminos Canales & Puertos, Ciudad Real, Spain

来源：

CEMENT AND CONCRETE RESEARCH | 2016年 / 90卷

基金：

中国国家自然科学基金;

关键词：

Fatigue; Fiber reinforcement; High-performance concrete; SEM; Mechanical properties; LOADING FREQUENCY; COMPOSITES SHCC; PLAIN CONCRETE; BEHAVIOR; TOUGHNESS; TENSILE; ECC; PERFORMANCE; FRACTURE; FLEXURE;

D O I：

10.1016/j.cemconres.2016.09.019

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The fiber reinforced cementitious material with high ductility has potential use in particular environments and structures that undergo repeated or fatigue loads. In this study, a series of monotonic and fatigue tests were performed to investigate the compressive fatigue behavior of this material. It is found that the fatigue life of this material is higher than that of plain concrete and steel fiber reinforced concrete under the same stress level. In addition, the failure deformation of fiber reinforced cementitious material with high ductility under fatigue load was larger than the monotonic envelope, while the envelope coincides with the monotonic loading curve for concrete or fiber reinforced concrete. The failure surface and damage process were investigated and a new failure mode of polyvinyl alcohol fiber with crushed end was discovered. The fatigue failure surface could be divided into three regions, including fatigue source region, transition region and crack extension region. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：174 / 183

页数：10

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