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钢管混凝土结构的特殊性决定了其混凝土的独特性,其灌注的自密实混凝土应具有良好的流动性、粘聚性、可泵性、抗离析性及自密实的性能,因而其质量控制显得尤为关键和重要。本文以陕西宝汉高速公路石门水库特大桥混凝土灌注案例为基础,重点系统性地阐述了钢管拱桥中浇筑自密实补偿收缩混凝土的质量控制要点,并对以后同类工程混凝土的施工质量控制提供借鉴和指导意义。
The particularity of CFST structure determines the uniqueness of its concrete. The self-compacting concrete filled with CFST should have good fluidity, cohesiveness, pumpability, segregation resistance and self-compacting performance. Therefore, its quality control is particularly significant The key and important. Based on the case of concrete pouring of Shimen Reservoir Super-Large Bridge on Bao-Han Expressway in Shaanxi Province, this paper systematically elaborates the key points of quality control of self-compacting compensated concrete pouring in steel tube arch bridge, and provides references for future construction quality control of similar concrete Guiding significance.