华北水利水电大学学报（自然科学版）2026，Vol.47Issue(2)：96-102,160,8.DOI:10.19760/j.ncwu.zk.2026027
大流动性钢纤维橡胶混凝土力学及抗冲击性能研究
Research on Mechanical Properties and Impact Resistance of High-Fluidity Steel Fiber-Reinforced Rubber Concrete
摘要
Abstract
[Objective]This study aims to analyze the effects of steel fibers and rubber particles on the mechanical proper-ties,impact energy dissipation,ductility ratio,and toughness coefficient of high-fluidity concrete.Additionally,it seeks to enhance the mechanical and impact resistance properties of high-fluidity concrete.[Methods]Steel fiber-reinforced rubber concrete(SFRRC)test blocks with different steel fiber contents(0.8%,1.2%,and 1.6%)and rubber particle volume sub-stitution rates(10%,15%,and 20%)were designed.Drop hammer impact tests and basic mechanical property assessments were conducted.A two-parameter Weibull function model was employed to predict the impact resistance lifespan of high-fluid-ity SFRRC.[Results](1)Steel fibers enhanced the cube compressive strength and splitting tensile strength of high-fluidity concrete,whereas the incorporation of rubber particles led to a reduction in strength;(2)Steel fibers significantly improved the impact resistance of high-fluidity concrete.Notably,concrete with a rubber particle volume substitution rate of 20%and a steel fiber content of 1.6%exhibited the highest number of impact cycles before final fracture,demonstrating optimal impact resistance;(3)Under constant steel fiber content,the impact resistance ductility ratio and toughness coefficient of high-fluid-ity rubber concrete increased with a higher rubber particle substitution rate.[Conclusion]Steel fibers and rubber particles exert distinct influences on the mechanical properties of high-fluidity concrete.However,both significantly enhance its impact resistance.The impact resistance lifespan of high-fluidity SFRRC adheres to the Weibull distribution model.This study serves as a valuable reference for evaluating the impact resistance performance of high-fluidity SFRRC.关键词
大流动性/钢纤维/橡胶颗粒/混凝土/抗冲击性能/Weibull分布Key words
high fluidity/steel fiber/rubber particles/concrete/impact resistance/Weibull distribution分类
建筑与水利引用本文复制引用
徐诺军,陈永升,李煜晓,丁新新,曲福来..大流动性钢纤维橡胶混凝土力学及抗冲击性能研究[J].华北水利水电大学学报（自然科学版）,2026,47(2):96-102,160,8.基金项目
国家自然科学基金项目(52108212). （52108212）
