钢纤维自密实混凝土工作性能及抗压强度试验研究  

Research of Steel Fiber Self-compacting Concrete Workability and Compressive Strength

作　　者：赵燕茹[1] 郝松[1] 高明宝[1] 范晓奇 时金娜[1] 

机构地区：[1]内蒙古工业大学土木工程学院,内蒙古呼和浩特010051

出　　处：《施工技术》2017年第3期61-64,79,共5页Construction Technology

基　　金：国家自然科学基金项目(11362013)

摘　　要：采用坍落流动度试验、J-环试验检测了新拌钢纤维自密实混凝土的工作性能,研究了混凝土强度等级、钢纤维掺量对拌合物黏度、填充性能、自流平性能及间隙通过性的影响规律;通过混凝土立方体抗压试验,探讨了不同钢纤维掺量时自密实混凝土28d抗压强度变化规律。研究结果表明:钢纤维的掺入虽会降低自密实混凝土的工作性能,但选取合理的试验配合比及正确的搅拌方法,同样能够配制出满足施工要求的钢纤维自密实混凝土。钢纤维会小幅提高自密实混凝土的抗压强度,且随钢纤维掺量的增加而增加。In this paper,the working performance of steel fiber reinforced self-compacting concrete was investigated by slump flow test and J-ring test. The effect of strength grade and steel fiber proportion on structural viscosity,filling performance,self-leveling properties and penetration through voids of fixed steel reinforcement were also studied. The change of 28 d compressive strength of self-compacting concrete with different steel fiber proportion was discussed by compression testing of concrete cubes. The results show that the steel fiber could reduce the working performance of self-compacting concrete,but by selecting appropriate test mix and proper mixing methods,the steel fiber reinforced self-compacting concrete could meet the construction requirements. The steel fiber could slightly improve the compressive strength of self-compacting concrete which will continue to increase by adding the steel fiber.

关 键 词：混凝土 钢纤维自密实混凝土 工作性能 抗压强度 试验研究 

分 类 号：TU502.6[建筑科学—建筑技术科学]