工业废渣自密实混凝土力学性能及耐久性分析
打开文本图片集
Performanceand Durability AnalysisofIndustrial Waste Self-Compacting Concrete
YE Jiabin1SUN Lizhe1ZHANG Beichun1HOUYurong1LU Zhibin1LIHao² （1.China Construction Seventh Engineering Division Co.，Ltd.， Zhengzhou 45oooo， China; 2.Henan Zhonggong Design & Research Croup Co.，Ltd.， Zhengzhou 45oooo， China）
Abstract：[Purposes] This study aims to investigate the workability （slump flow，seting time）， mechanical properties （compressive strength），and durability of self-compacting concrete when industrial waste residues are used as cementitious materials to replace cement，so as to provide a rational basis for the application of industrial waste residues in self-compacting concrete.[Methods] Using the controlled variable method，the efects of key parameters such as slag replacement amount，fly ash replacement amount， alkali activator dosage，and water-cement ratio on the performance indicators of the material， including slump flow，setting time，and compressive strength，were systematically analyzed. Durability analysis was also conducted. [Findings] With the increase in slag replacement amount，fly ash replacement amount， alkali activator dosage，and water-cement ratio，the slump flow of the material increased （improved fluidity），and both the initial and finalsetting times were prolonged.The compressive strengthof the material decreased with the increase in slag replacement amount，fly ash replacement amount，and water-cement ratio.The effect of alkali activator dosage on compressive strength showed an initial increase followed by adecrease.Both slagand flyashsignificantly improved the durabilityand service lifeof thematerial， with fly ash exhibiting a beter improvement eect than slag.[Conclusions] Industrial waste residues can be used as cementitious materials for self-compacting concrete.Provided that the compressive strength meets the requirements，the replacement amount of industrial waste residues can be appropriately increased，which not only enhances the overallperformance of the material but also promotes the resource utilization of waste.
Keywords：self-compacting concrete; industrial waste; slump flow; setting time; compressive strength; durability
0 引言
随着交通道路建设的发展，混凝土结构日益趋向超大规模化、结构复杂化与异型结构，传统混凝土面临诸多挑战。（剩余6799字）
