STUDY ON PERFORMANCES OF STEEL FIBER REINFORCED C55 GRADE SELF-COMPACTING CONCRETE
Based on the requirement for the construction application of high strength steel fiber reinforced self-compacting concrete (SFR-SCC) to the composite joint section between steel and concrete box girders of the super-long span hybrid girder cable-stayed bridge in the Edong Yangtze River, the effect of the volume fractions of short steel fiber on the workability and compressive strength of C55 grade SFR-SCC was investigated, and the differences in the mechanical properties, crack resistance, flexural toughness and durability between the C55 grade SFR-SCC and normal C55 grade SCC were tested. The results indicated that the incorporation of 0.6～0.8vo1％ steel fiber significantly increased the compressive strength of the SFR-SCC, and didnt affect the non-vibration compressive strength while meeting the self-compacting. Furthermore, the 0.6vo1％ steel fiber significantly increased the split tensile strength, flexural strength and elastic modulus, and decreased the sensitivity of plastic shrinkage crack and drying shrinkage value as well as enhanced the toughness of the SFR-SCC. Moreover, the SFR-SCC has high chloride penetration resistance and freeze-thaw durability.
steel fiber high strength self-compacting concrete mechanical properties crack resistance durability
Beixing Li He Gao Gong Cui Jin Zha
Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education,Wuhan University of Technology, China
国际会议
长沙
英文
586-595
2009-06-05（万方平台首次上网日期，不代表论文的发表时间）