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再生微粉在水泥基材料中的应用与研究进展.docx

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再生微粉在水泥基材料中的应用与研究进展 Title:ApplicationandResearchProgressofRecycledUltrafinePowderinCement-BasedMaterials Introduction: Theutilizationofrecycledmaterialsinconstructionhasgainedsignificantattentionduetoitspotentialtoreduceenvironmentalimpactsandconservenaturalresources.Theapplicationofrecycledultrafinepowderincement-basedmaterialshasemergedasapromisingsolutiontoenhanceboththemechanicalanddurabilityproperties.Thispaperaimstoprovideanoverviewoftheapplicationandresearchprogressofrecycledultrafinepowderincement-basedmaterials. 1.OverviewofRecycledUltrafinePowder: Recycledultrafinepowderreferstothefineparticlesobtainedfromtherecyclingprocessofwastematerialssuchasflyash,silicafume,slag,andlimestonepowder.Thesewastematerialsareprocessedtoproduceultrafinepowdersthatcanbeincorporatedintocement-basedmaterials. 2.InfluenceonMechanicalProperties: Theadditionofrecycledultrafinepowderincement-basedmaterialshasbeenfoundtoimprovetheirmechanicalproperties.Theultrafineparticlesactasnucleationsites,promotingthehydrationprocessandenhancingthestrengthandstiffnessofthematerials.Severalstudieshaveshownthattheincorporationofrecycledultrafinepowdercaneffectivelyincreasethecompressivestrength,flexuralstrength,andsplittensilestrengthofcement-basedmaterials. 3.ImpactonDurabilityProperties: Recycledultrafinepowderalsoplaysasignificantroleinenhancingthedurabilitypropertiesofcement-basedmaterials.Theultrafineparticlesfillthecapillaryporesofthematerials,reducingthepermeabilityandimprovingtheresistancetowaterpenetration.Additionally,thepresenceofrecycledultrafinepowdercanmitigatethedetrimentaleffectsofchloridepenetrationandalkali-silicareaction,leadingtoimproveddurabilityagainstenvironmentalfactors. 4.InfluenceonMicrostructure: Theadditionofrecycledultrafinepowderaltersthemicrostructureofcement-basedmaterials.Theultrafineparticlesfillthevoidsbetweencementgrainsandcreateadensermicrostructure,enhancingtheinterfacialtransitionzoneandreducingtheporosity.Thisrefinedmicrostructureresultsinimprovedbondstren