| 钢渣细骨料混凝土单轴受压应力-应变关系试验研究 |
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| 引用本文： | 薛刚,付乾,周海峰,孙立所.钢渣细骨料混凝土单轴受压应力-应变关系试验研究[J].西南交通大学学报,2022,57(6):1165-1174. |
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| 作者姓名： | 薛刚 付乾 周海峰 孙立所 |
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| 作者单位： | 内蒙古科技大学土木工程学院，内蒙古 包头 014010 |
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| 基金项目： | 国家自然科学基金（52168032） |
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| 摘 要： | 为研究钢渣细骨料在混凝土中的适用性及钢渣细骨料混凝土的轴压本构模型，进行了钢渣细骨料的物理化学性能试验，并对钢渣细骨料的稳定性进行测试分析；在此基础上，制备了6组不同钢渣细骨料掺量的钢渣混凝土立方体及棱柱体试件，研究了钢渣细骨料混凝土的单轴受压性能. 研究结果表明:本文选用钢渣的游离氧化钙含量、压蒸粉化率均满足相关规范要求，适用于混凝土细骨料；钢渣细骨料混凝土破坏的脆性特征更加明显，比普通混凝土的抗压强度有明显提高；钢渣混凝土棱柱体抗压强度与立方体抗压强度比值为0.80 ~ 0.86；可依据Carreira and Chu模型及Wee模型对钢渣混凝土本构关系进行分段描述，分段式本构模型与实测钢渣细骨料混凝土的应力-应变曲线基本吻合.
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| 关 键 词： | 钢渣细骨料 混凝土 单轴受压 本构模型 |
| 收稿时间： | 2021-02-23 |
Experimental Study on Stress-Strain Relationship of Steel Slag Fine Aggregate Concrete Under Uniaxial Compression |
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| XUE Gang,FU Qian,ZHOU Haifeng,SUN Lisuo.Experimental Study on Stress-Strain Relationship of Steel Slag Fine Aggregate Concrete Under Uniaxial Compression[J].Journal of Southwest Jiaotong University,2022,57(6):1165-1174. |
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| Authors: | XUE Gang FU Qian ZHOU Haifeng SUN Lisuo |
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| Affiliation: | College of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China |
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| Abstract: | In order to study the applicability of steel slag fine aggregate in concrete and the Axial compression constitutive model of steel slag concrete, the physical and chemical properties of steel slag fine aggregate were tested and the stability of steel slag fine aggregate was tested and analyzed. Six groups of steel slag concrete cube and prism specimens with different steel slag fine aggregate content were prepared, and the uniaxial compression performance of steel slag concrete was studied. The results show that the free calcium oxide and autoclaved pulverization rate of steel slag selected in this paper meet the requirements of relevant specifications and are suitable for concrete aggregate. The brittle characteristics of steel slag fine aggregate concrete are more obvious, which is significantly improved than ordinary concrete. The ratio of prism compressive strength of steel slag concrete to cube compressive strength is 0.80?0.86. The constitutive relationship of steel slag concrete can be described in sections according to the Carreira and Chu model and Wee model. The sectional constitutive model is basically consistent with the measured stress-strain curve of steel slag fine aggregate concrete. |
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