高速铁路钢管拱C50补偿收缩自密实混凝土正交试验研究  

Orthogonal Experimental Study on C50 Shrinkage-Compensating Self-Compacting Concrete of High-Speed Railway Steel Tube Arch

作　　者：张永根 ZHANG Yonggen(China Railway Eight Bureau Group Second Engineering Co.,Ltd.,Chengdu Sichuan 610599,China)

机构地区：[1]中铁八局集团第二工程有限公司,四川成都610599

出　　处：《工程质量》2023年第5期27-33,45,共8页Construction Quality

摘　　要：论文介绍某高速铁路桥梁钢管拱C50补偿收缩自密实混凝土正交试验研究。通过对所用胶材用量变化、砂率变化、外加剂掺量变化、膨胀剂用量变化、掺合料掺量变化等因素对混凝土物理、力学性能的影响的分析,筛选出了最佳的C50补偿收缩自密实混凝土配合比。This paper introduces the orthogonal experimental study on C50 shrinkage compensating selfcompacting concrete for steel pipe arch of a high-speed railway bridge.Through the analysis of the influence on the physical and mechanical properties of concrete by the change of glue material dosage,sand rate,admixture dosage,expansive agent dosage and admixture dosage,the best mix proportion of C50shrinkage compensating self-compacting concrete is selected.

关 键 词：自密实 补偿收缩 钢管拱混凝土 正交试验 

分 类 号：TU528[建筑科学—建筑技术科学]