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1、Cement&ConcreteComposites44(2013)1–8ContentslistsavailableatScienceDirectCement&ConcreteCompositesjournalhomepage:www.elsevier.com/locate/cemconcompSynthesis,characterizationandpropertiesofcalciumferroaluminatebelitecementsproducedwithelectricarcfurnacesteel
2、slagasrawmateriala,babb,⇑R.I.Iacobescu,Y.Pontikes,D.Koumpouri,G.N.AngelopoulosaDepartmentofMetallurgyandMaterialsEngineering,KULeuven,KasteelparkArenberg44bus2450,B-3001Heverlee,Leuven,BelgiumbLaboratoryofMaterialsandMetallurgy,Dept.ofChemicalEngineering,Uni
3、versityofPatras,26500Rio,GreecearticleinfoabstractArticlehistory:Thisstudyinvestigatedtheuseof10(M1),17(M2)and27wt.%(M3)electricarcfurnacesteelslag(EAFS)Received29March2012asarawmaterialintheproductionofcalciumferroaluminatebelitecementclinker,afterfiringatRe
4、ceivedinrevisedform6August20131320°C.ThethermalbehavioroftherawmealswasstudiedbyTG/DSCandXRDwhereasfortheanalysisAccepted10August2013oftheclinkers,XRD/QXRD,SEM/EDSandEPMAwereemployed.Theresultingclinkerwasco-grindedAvailableonline20August2013with5and20wt.%Fl
5、ueGasDesulfurization(FGD)gypsumandthepropertiesweredeterminedbyaseriesoftestsinaccordancetoENstandards.TheevolutionofhydrationwasinvestigatedbySEMandKeywords:thedevelopmentofcompressivestrength.TheresultsrevealedthattheformedphasesintheclinkersCalciumferroal
6、uminatebeliteclinkerElectricarcfurnacesteelslagwereC2S,C4AFandC4A3Sˆ.Themainhydrationproductswereettringite,AFmandhydrogarnet.TheVICrVIleachedCrwasbelow1ppminM3.Compressivestrengthincementswith5wt.%FGDgypsumwasHydration(inMPa):18.3forM1,14.3forM2and7.8forM3a
7、t28days,whereasfor20wt.%FGDgypsum,thevaluesFGDgypsumwerealmostdoubled.Ó2013ElsevierLtd.Allrightsreserved.1.IntroductionThepast30yearshaveseentheemergenceofanumberofalter-native‘‘greener’’typesofcement.However,incontrasttoPortlandThetransitiontowardsresourcee
8、fficient,low-carbon,closed-cement,thesenewvarietieshavelimitedapplicationinmain-loopeconomiesisanurgentnecessityasourplanetfacesunprec-streamconstruction.Calciumferroaluminate(CFAB),orsulfoalu-ed
