基于不同水胶比掺入多种纤维的再生骨料绿色混凝土力学性能测试

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中图分类号：TQ177.6+8；TU528 文献标志码：A

文章编号：1001-5922（2025）12-0036-05

Mechanical properties test of recycled aggregate green concretebased on different water-binderratios mixed withvarious fibers

YINYiyun'，XIONG Chunmei² （1.School of Transportation and Civil Engineering，Nanchang Jiaotong Institute，Nanchang 3301Oo，China; 2.School of Management Engineering，Jiangxi IndustryPolytechnic Collge，Nanchang 33O2Oo，China）

Abstract：The synergistic efectof water-binder ratioand fiber hybrid technology on the mechanical properties of recycled aggregate green concrete was investigated. Class I recycledcoarse aggregate is used to completely replace natural coarse aggregate，and three water-binder ratio levels of O.32，O.38 and O.44are set.A variety of schemes， such assingle-doped basalt fiber（BF），carbon fiber（CF），steel fiber（SF）and hybrid fiber，were designed to prepare recycled concrete，and its compressive，splitting tensile and flexural strength were tested.The results show thatthewater-binderratioplaysaleadingroleinthestrengthof thematrix，buttherearediferentotimal water-binder ratios for diferent mechanicalproperties：whenthewater-binderratioisO.38，thecompressveandsplitting tensile strengthoftheconcrete isthebest;inordertoobtainthehighestflexuralstrength，alowwater-binderratioof0.32is required.Fiber cansignificantly improve the toughness and crack resistance ofconcrete，and the reinforcementand toughening effctof steelfiberaloneor mixedwithBF/CFis themostprominent.Thisstudyprovidesan important basis for engineering applications.

Key words：water-binder ratio;green concrete;mechanical properties;recycled aggregate;fiber

回收再利用是推动建筑行业可持续发展的重要途径。（剩余4668字）