本科毕业论文英文翻译水泥专业

济南大学毕业论文外文资料翻译毕业论文外文资料翻译题目波特兰石灰石水泥和混凝土的性能分析学院材料科学与工程专业材料科学与工程班级XXXXXX学生贾新伟学号2009XXXXXX指导教师XXXX二零一三年四月二十日济南大学毕业论文外文资料翻译Cement&ConcreteComposites24(2002)371–378AnanalysisofthepropertiesofPortlandlimestonecementsandconcreteS.Tsivilisa,*,E.Chaniotakisb,G.Kakalia,G.BatisaaChemicalEngineeringDepartment,NationalTechnicalUniversityofAthens,9HeroonPolytechniouSt.,15773Athens,GreecebDepartmentofResearchandDevelopment,TitanCementCompanyS.A.,KamariPlantViotias,P.O.Box18,19200Elefsis,GreeceAbstractInthispaperthemainfactorsafectingthepropertiesofPortlandlimestonecementsarediscussedwhilethehydrationbehavioroflimestonecementsisexamined.Inaddition,theintergrindingprocess,concerningtheproductionofthelimestonecements,isstudied.Finallythepropertiesandthebehavioroflimestonecementconcreteaswellasthecorrosionbehavioroflimestonecementmortarareinvestigated.Itisconcludedthatthefinenessofclinkerandlimestoneisstronglyconnectedwiththelimestonecontentandthefinenessofthecement.Thelimestonecementsindicatesatisfactorystrengthandgenerallydemandlesswaterthantherelativepurecements.Thelimestoneadditionimprovestheclinkerreactivityandtheexploitationofitshydraulicpotential.ThePortlandlimestonecementsindicatecompetitiveconcretepropertiesandimprovethecorrosionperformanceoftheconcrete.2002ElsevierScienceLtd.Allrightsreserved.Keywords:Portlandlimestonecement;Intergrinding;Cementproperties;Hydration;Concreteproperties;Corrosion1.IntroductionTheuseofPortlandlimestonecementsseemstohavemanybenefits,bothtechnicalandeconmical[1-3].Inaddition,theEuropeanStandardEN197-1identifiestwotypesofPortlandlimestonecementcontaining6-20%limestone(typeII/A-L)and21-35%limestone(typeII/B-L),respectively[4].ItisexpectedthatthefutureworldproductionofPortlandlimestonecementwillbecontinuouslyincreased.Thewideuseoflimestonecementrequiresathoroughknowledgeofthecementandconcreteproperties.Asfarasthecementisconcerned,theresearchworkisfocusedonthreeareas.Thefirstoneistheefectoflimestoneonthecementperformance[3,5-8].Thesecondone济南大学毕业论文外文资料翻译dealswiththeparticipationoflimestoneinthehydrationreactionsofclinker[9-19],whilethethirdonewiththeproductionprocessandspecificallytheintergrindingofclinkerandlimestone[5,20-22].Althoughthereisadisagreementinmanypartialtopics,theknowledgelevelissatisfactoryandcontinuouslyextended.Asfarasthelimestonecementconcreteisconcerned,thefewavailablereferencesarefocusedontwoareas.Thefirstoneistheefectoflimestoneontheconcretepropertiesandbehavior[23-29].Thesecondonedealswiththe''thaumasiteproblem'',correlatedwiththeuseoflimestonecementconcreteandcalcareousaggregates.RecentresearchworkshowsthatPortlandlimestonecementpastesaresusceptibletothethaumasiteforma-tion,duetosulfateattackat5℃,afteronlyafewmonthsexposuretosulfatesolutions[30-35].InthispaperthemainfactorsafectingthepropertiesofPortlandlimestonecementsareevaluated,whilethehydrationbehaviorofthelimestonecementsisexamined.Inaddition,theintergrindingprocess,concerningtheproductionofthelimestonecements,isstudied.Finallythepropertiesandthebehavioroflimestonecementconcreteaswellasthecorrosionbehavioroflimestonecementmortarareinvestigated.Thisworkisapartofaproject,developedinourlaboratories,concerningthepropertiesoflimestonecementandconcrete.2.IntergrindingofclinkerandlimestoneOrdinaryPortlandclinkerofindustrialoriginandlimestoneofhighcalcitecontent(CaCO3:95.3%)wereused(Tables1and2).Fourclinker/limestonemixtures,containing10%,20%,30%and40%limestone,respectively,weregroundtofourdiferentfinenesseachoneinapro-pilotplantballmill(16samplesCLi-jofTable3).Table1Chemicalandmineralogicalcompositionofclinker济南大学毕业论文外文资料翻译Table2Chemicalcomposition(%)oflimestoneTable3Particlesizedistribution(passing%)ofclinker,limestoneandmixtureaCLi-j:C:clinker,L:limestone,i:limestonecontent(%),j:grindingtime(A¼35min,B¼50min,C¼65min,D¼85min).bCEM:mixture(cement).cS:specificsurface(Blaine),n:uniformityfactorofRRdistribution.Inordertodeterminetheparticlesizedistributionofclinkerandlimestoneaftertheirintergrinding,asedimentationmethod(Andreasenapparatus)wasused.Asampleofeachmixturewaswelldispersedinabsoluteethylalcohol.Atpredefinedtimeintervalssampleswerewithdrawnusingapipet.Theselectedtimeintervalscorrespondtoparticlesizeslessthan32,16,8and4lm.Thealcoholwasremovedbydryingandthelimestonecontentwasdeterminedbymeasuringthelossofignition(LOI)at1000℃.Finally,theparticlesizedistributionofclinkerandlimestonewascomputed.TheRosin-Rammlerdistributionwasusedforde-scribingtheparticlesize济南大学毕业论文外文资料翻译distributionoftheintergroundsamples.ThevaluesoftheuniformityfactorðnÞhavebeencomputed(Table3).Itisseenthattheincreaseofthelimestonecontent,aswellastheincreaseofthece-mentfineness,leadstowiderparticlesizedistribution.Theparticlesizedistributionoftheclinkerissignificantlydiferentthanthatofthemixture.Thelimestoneisconcentratedinthefinefractions(8lm),whiletheclinkerisconcentratedinthecoarserfractions.Fig.1presentslimestoneandclinkercontentsofthediferentsizefractions.Itisseenthatthelimestonecontentinthefractionwithsizelessthan4lmis24.8%andtheclinkercontentis75