泡沫掺量对再生细骨料泡沫混凝土性能影响分析

Analysis of the Effect of Foam Dosage on the Performance of Recycled Fine Aggregate Foamed Concrete

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中图分类号：U414 文献标志码：A 文章编号：1005-8249（2025）01-0001-06

DOI：10.19860/j.cnki.issn1005-8249.2025.01.001

CAI Yanxial，23，LUO Shuai'，QIU Wei4，GAO Jiaqi23，XUE Xiaojie4，LI Lihui3 (1.School of Civil Engineering，Hebei University of Engineering，Handan O56038，China； 2. Beijing Zhonglu Gaoke Highway Technology Co.，Ltd.，Beijing 1OOO88，China； 3. Research Institute of Highway Ministry of Transport， Beijing 1OOO88，China； 4.Guangzhou Expressway Technology Co.，Ltd.，Guangzhou 510OOO，China）

Abstract：Inorder to achievethe high-valueutilizationofrecycledfineaggregatefrom wasteconcrete，thestudyinvestigated theinfluenceof diferent foamdosagesandthepresenceof polypropylenefibersontheworkabilityproperties，suchaswet density，flowability，andcompresivestrengthofrecycledfineaggegatefoamedconcrete.Bycombining variousfitig forms， therelationshipbetweenfoamdosageandcompresivestrength wasanalyzed.Theresearch showedthat withanincrease in foam dosage，thewetdensityofrecycledfineaggregatefoamedconcretedecreasedsignificantly，whiletheflowabilityandcopresive strengthdecreased.Theaditionofpolypropylenefibershaddiferentefectsonthewetdensityandflowabilityofrecycled fine aggregatefoamedconcretewithdiferentfoamdosages，butitdidnothaveasignificantimprovementefectoncompressive strength.According tothe presenceorabsenceof polypropylene fibers，theoptimal fiting forms fortherelationship between foamdosageandstrengthofrecycledfineaggregate foamedconcretewereexponentialfitingandpolyomialfiting，respectively.

Key words：recycled fine aggregates；foamed concrete；compressive strength；foam content；polypropylene fiber

材料科学

0 引言

随着国家经济的不断发展，在改扩建中旧建（构）筑物被拆除，产生了大量废旧混凝土。（剩余11490字）