| Flexural fatigue strength of steel fibrous concrete containing mixed steel fibres |
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| 引用本文： | SINGH S.P.,MOHAMMADI Y.,MADAN S.K.. Flexural fatigue strength of steel fibrous concrete containing mixed steel fibres[J]. 浙江大学学报(A卷英文版), 2006, 7(8): 1329-1335. DOI: 10.1631/jzus.2006.A1329 |
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| 作者姓名： | SINGH S.P. MOHAMMADI Y. MADAN S.K. |
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| 作者单位： | Civil Engineering National Institute of Technology Jalandhar 144 011 India，Civil Engineering University of Mohaghegh Ardebili Ardebil 179 Iran，Civil Engineering National Institute of Technology Kurukushetra 136 119 India |
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| 基金项目： | Project supported by the Indian Council for Cultural Relations,India |
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| 摘 要： | INTRODUCTION A number of experimental fatigue studies were conducted on plain concrete as well as on steel fibre reinforced concrete (SFRC) beams of different sizes under different loading conditions. Murdock and Kesler (1958) investigated the effect of stress ratio on the fatigue strength of plain concrete. Batson et al.(1972) reported fatigue strength of 74% and 83% of the first crack static flexural strength at 2 million cycles of complete reversed and not-reversed loads respectively…
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| 关 键 词： | 疲劳强度 钢筋网混凝土 静态挠曲强度 应力等级 应力比 |
| 收稿时间： | 2006-02-28 |
| 修稿时间： | 2006-03-20 |
Flexural fatigue strength of steel fibrous concrete containing mixed steel fibres |
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| S. P. Singh,Y. Mohammadi,S. K. Madan. Flexural fatigue strength of steel fibrous concrete containing mixed steel fibres[J]. Journal of Zhejiang University Science, 2006, 7(8): 1329-1335. DOI: 10.1631/jzus.2006.A1329 |
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| Authors: | S. P. Singh Y. Mohammadi S. K. Madan |
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| Affiliation: | (1) Civil Engineering, National Institute of Technology, Jalandhar, 144 011, India;(2) Civil Engineering, University of Mohaghegh Ardebili, Ardebil, 179, Iran;(3) Civil Engineering, National Institute of Technology, Kurukushetra, 136 119, India |
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| Abstract: | This paper reports investigation conducted to study the fatigue performance of steel fibre reinforced concrete (SFRC) containing fibres of mixed aspect ratio. An extensive experimental program was conducted in which 90 flexural fatigue tests were carried out at different stress levels on size 500 mm × 100 mm × 100 mm SFRC specimens respectively containing 1.0%, 1.5% and 2.0% volume fraction of fibres. About 36 static flexural tests were also conducted to determine the static flexural strength prior to fatigue testing. Each volume fraction of fibres incorporated corrugated mixed steel fibres of size 0.6 mm × 2.0 mm × 25 mm and 0.6 mm × 2.0 mm × 50 mm in ratio 50:50 by weight. The results are presented both as S-N relationships, with the maximum fatigue stress expressed as a percentage of the strength under static loading, and as relationships between actually applied fatigue stress and number of loading cycles to failure. Two-million-cycle fatigue strengths of SFRC containing different volume fractions of mixed fibres were obtained and compared with plain concrete. Project supported by the Indian Council for Cultural Relations, India |
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| Keywords: | Fatigue strength Static flexural strength Stress level Stress ratio Steel fibre reinforced concrete (SFRC) |
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