| Influence of Characteristics on Bending Strength of Layered Steel Fiber Reinforced Concrete |
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| 作者姓名： | DAI Shao-bin SONG Ming-hai HUANG Jun |
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| 作者单位： | [1]Design Institute, Wuhan University of Technology, Wuhan 430070, Hubei, China |
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| 基金项目： | Supported by the Key Scientific and Technological Project of Hubei Provincial Communications Department （20041h0315） |
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| 摘 要： | The influence of two main characteristics of steel fiber, the aspect ratio （Df） and volume fraction （ρf）, on the bending strength of Layered Steel Fiber Reinforced Concrete （LSFRC） is investigated by using orthogonal test. Via the variance analysis on the experimental results and trend analysis on the two characteristics, Df is found significantly related to the bending strength of LSFRC. The influence ratio is 63.3%. The bending strength of LSFRC increases if Df increases, makes better when Df reaches 100. ρf has ordinary influence on the bending strength of LSFRC. The influence ratio is 29.2%. Other characteristics, such as the shape of steel fiber and the mix proportion, have less influence. The best ρf contributing to the bending strength of LSFRC is 1.5 %. If ρf is greater than 1.5%, it has negative influence on the bending strength of LSFRC. So, ρf makes a limited contribution to the bending strength of LSFRC.
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| 关 键 词： | 纤维钢筋混凝土 LSFRC 弯曲度 直角 |
| 文章编号： | 1007-1202（2005）05-0883-04 |
| 收稿时间： | 2004-09-01 |
Influence of characteristics on bending strength of layered steel fiber reinforced concrete |
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| DAI Shao-bin SONG Ming-hai HUANG Jun.Influence of Characteristics on Bending Strength of Layered Steel Fiber Reinforced Concrete[J].Wuhan University Journal of Natural Sciences,2005,10(5):883-886. |
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| Authors: | Dai Shao-bin Song Ming-hai Huang Jun |
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| Institution: | (1) Design Institute, Wuhan University of Technology, 430070 Wuhan, Hube, China |
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| Abstract: | The influence of two main characteristics of steel fiber, the aspect ratio (D
f) and volume fraction (ρ
1), on the bending strength of Layered Steel Fiber Reinforced Concrete (LSFRC) is investigated by using orthogonal test. Via
the variance analysis on the experimental results and trend analysis on the two characteristics,D
f is found significantly related to the bending strength of LSFRC. The influence ratio is 63.3%. The bending strength of LSFRC
increases ifD
f increases, makes better whenD
f reaches 100.ρ
1 has ordinary influence on the bending strength of LSFRC. The influence ratio is 29.2%. Other characteristics, such as the
shape of steel fiber and the mix proportion, have less influence. The bestρ
1 contributing to the bending strength of LSFRC is 1.5%. Ifρ
1 is greater than 1.5%, it has negative influence on the bending strength of LSFRC. So,ρ
1 makes a limited contribution to the bending strength of LSFRC.
Foundation item: Supported by the Key Scientific and Technological Project of Hubei Provincial Communications Department (2004lh0315)
Biography: DAI Shao-bin (1965-), male, Ph.D. Associate professor, research direction: structural engineering. |
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| Keywords: | LSFRC bending strength orthogonal test influence ratio |
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