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C40透水混凝土配合比设计及性能研究.docx

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C40透水混凝土配合比设计及性能研究 Abstract Permeableconcreteiswidelyusedtoreducetherunoffandfloodingcausedbyexcessiverainwater,andhassignificantpotentialinthefieldofsustainableandenvironmentalprotection.ThisstudyaimedtoinvestigatethemixdesignandperformanceofC40permeableconcrete.Throughtheanalysisofdifferentwater-cementratios,aggregateratios,andfibertypes,theoptimalpermeableconcretemixturewasdetermined.TheresultsshowedthatthepermeabilityofC40permeableconcretecouldreachthestandardofporouspavement,andthecompressivestrengthmettherequirementsofconventionalpavement.Moreover,theadditionoffiberssignificantlyimprovedtheperformanceofpermeableconcrete,suchaserosionresistanceanddurability.Thestudyprovidesimportantreferencedataforthewidespreadapplicationofpermeableconcreteinenvironmentalprotectionandsustainabledevelopment. Introduction Permeableconcrete,alsoknownasperviousconcreteorporousconcrete,hasbecomeanimportantmaterialforsustainableurbandevelopment,whichcansolvewaterlogginganddrainageproblemsandreducetheimpactofurbanizationontheenvironment.Permeableconcretehasalargenumberofinterconnectingvoids,allowingrainwatertopenetrateandreducetheamountofrunoff.Inaddition,thistypeofconcretecanformanefficientcontrollingsystemforpollutantsinwaterbyremovingcontaminantsthroughtheprocessofpermeation. Thepermeabilityofpermeableconcreteiscontrolledbytheporestructure.Ingeneral,alargeraggregatesizeandasmallamountoffineaggregateareusedinthemixdesigntocreatethevoidsintheconcretematrix.Thewater-cementratioisalsocritical,whichaffectsthehydrationprocessandtheformationoftheporestructure.Theuseoffibersinthemixcanalsosignificantlyimprovethestrengthanddurabilityofpermeableconcrete. Inthispaper,weaimedtoinvestigatethemixdesignandperformanceofC40permeableconcrete.Arangeofexperimentswereconductedtodeterminetheoptimalmixproportionsandexplorethepropertiesofpermeableconcrete. ExperimentalMethodology Materials Portlandcementwithaspecificgravityof3.14andafinenessof3100cm2/gwasusedasthebindingmaterial.Water,silicafume,flyash,an