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1、Durabilityofself-compactingconcreteGeertDeSchutter、GuangYe、KatrienAudenaert、DirchBager、FrankBellmannAbstract： Becauseofthedifferentmixdesignincomparisonwithtraditionalconcreteandtheabsenceofvibration,differentdurabilitycharacteristicsmightbeexpectedforself-compactingconcret
2、e.Thestate-of-the-artreport,preparedbyRILEMTechnicalCommitteeTC205-DSCfocusesontheDurabilityofSCC,byfirstgatheringtheavailableinformationconcerningporestructure,air-voidsystemandtransportmechanisms.Theavailabledurabilityresultsarestudiedandsummarisedkeepinginmindthefundamen
3、talmechanismsanddrivingforces.Allrelevantdurabilityissuesareconsidered,likecarbonation,chloridepenetration,frostresistance,ASR,sulphateattack,thaumasiteformation,fireresistance,etc...Itisnottheintentiontogiveareviewonthesedurabilityaspectsforconcreteingeneral.Theaimhoweveri
4、stopointatthespecificsrelatedtotheuseofSCC,e.g.duetotheadditionofalargeamountoflimestonefiller,etc...ThispapersummarizesthemainconclusionsoftheState-of-the-ArtReport.1 IntroductionSelf-compactingconcrete(SCC)isaninnovativeconcretethatdoesnotrequirevibrationforplacingandcomp
5、action.Itisabletoflowunderitsownweight,completelyfillingformworkandachievingfullcompaction,eveninthepresenceofcongestedreinforcement.Self-compactingabilitycanbe,butisnotnecessary,equivalenttoself-levellingability.Sometimes,thetermself-levellingisappliedtodescribeaself-compa
6、ctingconcretewithaperfectlevellingaftercasting.Self-compactingconcrete(SCC)wasdevelopedinJapaninthe1980’s.Theaimwastodevelopconcretethatcouldbeplacedwithoutvibration.Inthisway,somehealthrisksaswellasenvironmentalproblemscouldbeavoided(“whitefingersyndrome”,noise,vibrations.
7、..).2 ScopeofthereportItisemphasizedthatthisstate-of-the-artreportisdealingwithdurabilityofadequateSCC,showingnosegregation,bleeding,blocking...TheSCCshouldbewelldesigned,wellcured,andthecastingshouldbedoneinagoodway.ThecontractorshouldhavesomeexperiencewithSCC.Nofurtherref
8、erenceismadetoliteratureinthisoverview.Thereferencesofthescientificsourcescanbefou
