再生微粉配制细砂改善ECC力学性能研究(英文)-豆柴文库

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再生微粉配制细砂改善ECC力学性能研究(英文)
Title:InvestigationontheImprovementofECCMechanicalPropertiesthroughtheIncorporationofRecycledMicroPowderandFineSand
Abstract:
EngineeredCementitiousComposites(ECC)havegainedsignificantattentionintheconstructionindustryduetotheirexceptionalmechanicalpropertiesanddurability.However,thehighcostandenvironmentalconcernsassociatedwiththeproductionofECChaveencouragedresearcherstoexplorealternativematerialsforitsformulation.ThisstudyinvestigatesthepotentialofincorporatingrecycledmicropowderandfinesandinECCtoenhanceitsmechanicalproperties.TheeffectsofvaryingpercentagesofrecycledmicropowderandfinesandonthemechanicalbehaviorofECCareevaluatedanddiscussed.
Introduction:
EngineeredCementitiousComposites(ECC),knownfortheirtensilestrain-hardeningcharacteristics,areanadvancedclassoffiber-reinforcedcementitiouscomposites.ECC'suniqueabilitytoundergosignificantdeformationswithoutexhibitingsuddencatastrophicfailuremakesithighlysuitableforapplicationsinseismicareas,infrastructure,andrepairandrehabilitationworks.ECCisacomplexmaterialsystemtypicallycomposedofcement,fineaggregate,water,fibers,andchemicaladmixtures.However,thehighcostandenvironmentalfootprintassociatedwiththeproductionofECChavemotivatedresearcherstoexploresustainablesolutionsbyincorporatingrecycledmaterials.
MaterialsandMethods:
ThisstudyinvestigatestheeffectofincorporatingdifferentpercentagesofrecycledmicropowderandfinesandinECC.Recycledmicropowder,obtainedfromthegrindingofwasteconcrete,isutilizedasapartialreplacementforcement,whilefinesandactsasareplacementforregularcoarseaggregate.ThemechanicalpropertiesofECC,includingcompressivestrength,tensilestrength,flexuralstrength,andstraincapacity,areevaluatedthroughaseriesoflaboratorytests.Additionally,scanningelectronmicroscopy(SEM)isusedtoanalyzethemicrostructureofECCsampleswithvaryingproportionsofrecycledmaterials.
ResultsandDiscussion:
TheresultsdemonstratethattheincorporationofrecycledmicropowderandfinesandinECCsignificantlyaffectsitsmechanicalproperti