Fatigue life analysis of steel-polypropylene hybrid fiber reinforced concrete subjected to uniaxial constant-amplitude cyclic compression

被引：0
作者：
Cui K. [1 ]
Xu L. [1 ]
Chi Y. [1 ]
Li L. [1 ]
Li X. [1 ]
机构：
[1] Wuhan University, Wuhan
来源：
Tumu Gongcheng Xuebao/China Civil Engineering Journal | 2023年 / 56卷 / 09期
关键词：
fatigue equation; fatigue life; positive synergetic effect; steel⁃polypropylene hybrid fiber reinforced concrete; uniaxial constant⁃amplitude cyclic compression;
D O I：
10.15951/j.tmgcxb.22040376
中图分类号：
学科分类号：
摘要：
The fatigue life of steel⁃polypropylene hybrid fiber reinforced concrete (HFRC) subjected to uniaxial constant⁃amplitude cyclic compression was investigated. A total of 36 groups of prismatic specimens were tested for various stress levels and different fiber parameters that include steel fiber volume fractions and aspect ratios, as well as polypropylene fiber volume fractions and aspect ratios. Based on the measured fatigue test data, the whole process of HFRC under fatigue compression was analyzed, the effect of fiber parameters on the fatigue life of concrete specimens was probed, and the P⁃S⁃N fatigue equation was established with fiber parameters taken into consideration. The results showed that the failure mode of HFRC is shear failure, exhibiting its better ductility. In addition, the development of fatigue deformation for HFRC could be divided into three stages: rapid growth stage, stable development stage and fatigue failure stage. Hence, hybrid fiber is more superior to polypropylene fiber or steel fiber in prolonging the fatigue life of concrete, owing to a positive synergetic effect generated in the hybrid system. Finally, it was found that the proposed fatigue equation correlates well with available experimental results, demonstrating a good applicability in predicting the fatigue life of concrete with reasonable accuracy. This research outcome could provide a reference for life⁃ cycle design and performance control of HFRC structures. © 2023 Editorial Office of China Civil Engineering Journal. All rights reserved.
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页码：26 / 38
页数：12
相关论文
共 30 条
  • [21] Huang B T, Li Q H, Xu S L, Et al., Fatigue deformation behavior and fiber failure mechanism of ultra⁃high toughness cementitious composites in compression [ J ], Materials & Design, 157, pp. 457-468, (2018)
  • [22] Dong S F, Wang Y L, Ashour A, Et al., Uniaxial compressive fatigue behavior of ultra⁃high performance concrete reinforced with super⁃fine stainless wires [ J], International Journal of Fatigue, 142, (2021)
  • [23] Dong S F, Wang X Y, Ashour A, Et al., Enhancement and underlying mechanisms of stainless steel wires to fatigue properties of concrete under flexure, Cement and Concrete Composites, 126, (2022)
  • [24] Yeon K S, Choi Y S, Kim K K, Et al., Flexural fatigue life analysis of unsaturated polyester⁃methyl methacrylate polymer concrete, Construction and Building Materials, 140, pp. 336-343, (2017)
  • [25] Li Q H, Huang B T, Xu S L, Et al., Compressive fatigue damage and failure mechanism of fiber reinforced cementitious material with high ductility [ J ], Cement and Concrete Research, 90, (2016)
  • [26] Liu Wen, Xu Shilang, Li Qinghua, Study on flexural fatigue life of ultra⁃high toughness cementitious composites under constant amplitude cyclic loading, Journal of Building Structures, 33, 1, (2012)
  • [27] Chen M, Zhong H, Zhang M Z., Flexural fatigue behaviour of recycled tyre polymer fibre reinforced concrete, Cement and Concrete Composites, 105, (2020)
  • [28] Deng F Q, Ding X X, Chi Y, Et al., The pull⁃out behavior of straight and hooked⁃end steel fiber from hybrid fiber reinforced cementitious composite: Experimental study and analytical modelling, Composite Structures, 206, pp. 693-712, (2018)
  • [29] Cachim P B, Figueiras J A, Pereira P A A., Fatigue behavior of fiber⁃reinforced concrete in compression [ J], Cement and Concrete Composites, 24, 2, (2002)
  • [30] Kim J K, Kim Y Y., Experimental study of the fatigue behavior of high strength concrete [ J ], Cement and Concrete Research, 26, 10, pp. 1513-1523, (1996)
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