| 摘要: |
| 研究了矿渣粉掺量对钢纤维自密实混凝土（SFRSCC）工作性能和力学性能的影响，并从微观层面阐释钢纤维和矿渣粉对混凝土基体的增强作用.结果表明：采用10％掺量的矿渣粉代替水泥能有效提高新拌混凝土的工作性能，增加钢纤维体积分数会减弱自密实混凝土的工作性能；矿渣粉与钢纤维的协同作用能够显著提高混凝土的抗压强度、劈裂抗拉强度和抗折强度；采用矿渣粉替代水泥有助于生成更致密的微观结构. |
| 关键词: 端钩钢纤维 自密实混凝土 工作性能 矿渣粉 微观结构 |
| DOI：10.3969/j.issn.1007-9629.2022.01.004 |
| 分类号:TU528.01 |
| 基金项目:国家自然科学基金资助项目（51227006） |
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| Influence of Granulated Blast Furnace Slag on the Properties of Steel Fiber Reinforced Self-compacting Concrete |
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ZHAO Yun1, BI Jihong1,2, WANG Zhaoyao1, HUO Linying1, DUAN Yichen1
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1.School of Civil Engineering，Tianjin University，Tianjin 300072，China;2.Key Laboratory of Coast Civil Structure Safety of Ministry of Education，Tianjin University，Tianjin 300072，China
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| Abstract: |
| The effect of the content of blast furnace slag on the workability and mechanical properties of steel fiber reinforced self-compacting concrete （SFRSCC） was studied. The strengthening effect of steel fiber and blast furnace slag on the concrete matrix was explained in a view of microstructure level. The results show that substituting 10% cement with blast furnace slag can effectively improve the workability of fresh concrete， while increasing fiber volume fraction can obviously weaken the workability of self-compacting concrete. The synergistic effect of blast furnace slag and steel fiber can significantly improve the compressive strength， splitting tensile strength and flexural strength of hardened concrete. Replacing cement with blast furnace slag is efficient to generate a denser microstructure. |
| Key words: hooked steel fiber self-compacting concrete workability blast furnace slag microstructure |
