硅酸盐通报2024，Vol.43Issue(5)：1867-1877,1888,12.
钢-聚丙烯腈纤维掺量对自密实混凝土流动性与力学性能的影响
Effect of Steel-Polyacrylonitrile Fiber Content on Fluidity and Mechanical Properties of Self-Compacting Concrete
摘要
Abstract
In order to analyze the effects of hybrid fibers on working performance and mechanical properties of self-compacting concrete(SCC),collapse expansion degree,J-ring collapse expansion degree,V-shaped funnel passing time and cube compressive strength of SCC with different steel fiber(SF)content(0％,0.4％,0.8％and 1.2％,volume fraction)and polyacrylonitrile fiber(PAN)content(0％,0.04％,0.08％and 0.12％,volume fraction)at different curing ages(7 and 28 d)were tested,and the microstructure of SCC was analyzed by scanning electron microscopy(SEM).The results show that with the increase of fiber content,fluidity and pore passing ability of SCC decrease,and the segregation resistance of SCC is improved.The improvement effect of SF on 7 d compressive strength of SCC is more significant than that of PAN.The mixed fiber has a more obvious effect on compressive strength of early SCC than single-doped fiber,and the mixed fiber can also effectively improve the toughness and ductility of SCC.关键词
自密实混凝土/钢纤维/聚丙烯腈纤维/工作性能/力学性能/微观形貌Key words
self-compacting concrete/steel fiber/polyacrylonitrile fiber/working performance/mechanical property/microstructure分类
建筑与水利引用本文复制引用
霍锐,马芹永,张鸿朋,李标..钢-聚丙烯腈纤维掺量对自密实混凝土流动性与力学性能的影响[J].硅酸盐通报,2024,43(5):1867-1877,1888,12.基金项目
安徽省住房城乡建设科学技术计划(2020-71) （2020-71）
安徽高校协同创新项目(GXXT-2019-005) （GXXT-2019-005）
