| Charactersitics of Stress-strain Curve of High Strength Steel Fiber Reinforced Concrete under Uniaxial Tension |
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| 作者姓名： | YANG Meng HUANG Chengkui WANG Jizhong |
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| 作者单位： | State Key Laboratory of Coastal and Offshore Engineering, Department of Civil Engineering, Dalian University of Technology, Dalian 116023, China |
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| 基金项目： | Funded by Regulation Revising Item of China Association for Engineering Construction Standardization （CECS 15：2000） |
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| 摘 要： | A whole of 110 specimens divided into 22 groups were tested with varying the volume fraction of steel fibers and the matrix strength of these specimens. The stress-strain behaviors of four types of steel fiber reinforced concrete （SFRC） under uniaxial tension were studied experimentally. When the matrix strength and the fiber content increase, the tensile stress and tensile strain vary differently according to the fiber type. The mechanisms of reinforcing effect for different types of fiber were analyzed and the stress-strain curves of the specimens were plotted. Some experimental factors for stress or strain of SFRC were given. A tensile toughness modulus Re0.5 was introduced to evaluate the toughness characters of SFRC under uniaxial tension. Moreover, the formula of the tensile stress-strain curve of SFRC was regressed. The theoretical curve and the experimental ones fit well, which can be used for references in construction.
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| 关 键 词： | 钢纤维增强混凝土 单轴向拉伸 强度 应力-应变曲线 |
| 收稿时间： | 2005-04-17 |
| 修稿时间： | 2006-03-06 |
Characteristics of stress-strain curve of high strength steel fiber reinforced concrete under uniaxial tension |
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| YANG Meng HUANG Chengkui WANG Jizhong.Charactersitics of Stress-strain Curve of High Strength Steel Fiber Reinforced Concrete under Uniaxial Tension[J].Journal of Wuhan University of Technology. Materials Science Edition,2006,21(3):132-137. |
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| Authors: | Yang Meng Ph D candidate Huang Chengkui Wang Jizhong |
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| Affiliation: | (1) State Key Laboratory of Coastal and Offshore Engineering, Department of Civil Engineering, Dalian University of Technology, 116023 Dalian, China |
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| Abstract: | A whole of 110 specimens divided into 22 groups were tested with varying the volume fraction of steel fibers and the matrix strength of these specimens. The stress-strain behaviors of four types of steel fiber reinforced concrete (SFRC) under uniaxial tension were studied experimentally. When the matrix strength and the fiber content increase, the tensile stress and tensile strain vary differently according to the fiber type. The mechanisms of reinforcing effect for different types of fiber were analyzed and the stress-strain curves of the specimens were plotted. Some experimental factors for stress or strain of SFRC were given. A tensile toughness modulus Re_ 0.5 was introduced to evaluate the toughness characters of SFRC under uniaxial tension. Moreover, the formula of the tensile stress-strain curve of SFRC was regressed. The theoretical curve and the experimental ones fit well, which can be used for references in construction. |
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| Keywords: | steel fiber reinforced concrete high strength uniaxial tension stress-strain curve soften characteristics |
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