期刊《ACIJournal》论文投稿模板.docx

12345678910111213141516171819202122232425DurabilityofConcreteinTidalEnvironment(70CharactersMaximum,Titlecasepreferred)byJohnSmithandDavidLee(NOTE:Thetitle,names,text,equations,tablesandfigureshavebeenalteredandpastedfromdifferentmanuscriptsforthepurposeofformatillustrationONLY.ThiSformatCanbeUSedasatemplatetoCoPyandDaSteyourmanuscripttitlesandsections.)Biography:(75WordsMaximumforeachauthor)AClmemberJohnSmithisaResearchEngineerattheMaterialsDivision,PortandAirportResearchInstitute,HereceivedhisBSfrom;MSfrom;andPhDfromHeisamemberofACICommittees221(Aggregates),302(Constructionofconcretefloors),and325(Concretepavements).Hisresearchinterestsincludedurabilityofreinforcedconcretestructuresinthemarineenvironment.DavidLeeisaresearcheratABSTRACT(orSYNOPSIS)(150WordsMaximum)Adetailedinvestigationontheconcretespecimens(3.94in.1100mmdiameterand7.87in.1200mmheight)(UnitsofmeasurementmustbeSIprimaryordualunitsifUSin.-lb)madewithdifferentchemicaladmixtureswascarriedoutafter10yearsoftidalexposure.Chemicaladmixturesincludeair-entrainingadmixture(vinsol),water-reducingadmixture(Iingosulfonategroup),varioushigh-rangewater-reducingandair-entrainingadmixtures(naphthalene,melamine,polycarboxylandamino-sulfbnategroup)anddrying-shrinkage-reducingadmixture(glycoletherplusaminoalcoholderivatives).Thespecimensweretestedforcompressivestrength,Young'smodulusofelasticity,carbonationdepths,chlorideingress,123456789101112131415161718192021222324poresizedistribution,electrochemicalandphysicalevaluationofsteelbar,scorrosioninconcrete,examinationofsteel-concreteinterfaces,andmineralogyofthemortarportionsofconcreteKeywords:(9KeywordsMaximum;alphabeticalorder)chemicaladmixture;chlorideingress;corrosion;durability;INTRODUCTIONWater-reducingchemicaladmixturesareusedtoproduceconcreteofhigherstrength,obtainaspecifiedstrengthatlowerwater-cementitiousratios(wc),orincreasetheslumpofagivenmixturewithoutanincreaseinwatercontent.Numerousstudiesonthepropertiesoffreshconcretemixedwithdifferentchemicaladmixtureswerecarriedouttoinvestigatethefreshconcretepropertiesortheconcretepropertiesatanearlyageofexposure.Therewerealsoseveralinternationalconferencesheldfocusingonthechemicaladmixturesinthelastcoupleofdecades.Detailedstudiesonthelong-termperformanceofconcretemixedwithdifferentchemicaladmixtures,however,areveryscarceinthetechnicalliterature.Therefore,studiesonthelong-termperformanceofchemicaladmixtureswillbeRESEARCHSIGNIFICANCE(100WordsMaximum)Differenttypesofhigh-rangewater-reducingandair-entrainingchemicaladmixturesweredevelopedinthelastcoupleofdecades.Mostofthestudiesontheseadmixtureswerecarriedouttojudgethepropertiesoffreshconcrete,orthepropertiesofconcreteatanearlyage.Studiesonthelong-termperformanceofconcretemadewithdifferentwater-reducingadmixturesareveryscarceinthetechnicalliteratures.Theauthorsbelievethatthisdetailstudydealingwiththelong-termperformanceofdifferentchemicaladmixturesiscarriedoutforthefirsttimeandwillbeveryusefultoconcretetechnology.12345678910111213141516171819202122232425EXPERIMENTALINVESTIGATION(OREXPERIMENTALPROCEDURE)Cylinderspecimenswithandwithoutsteelreinforcements(3.94in.100mmdiameterand7.87in.200mmheight)of19separatecaseswereinvestigated.Thevariablesincludecementtypes(ordinaryportlandcement,blendedcementreplacedbyslagpowderof4080and7900cm2g),air-entraining(vinsol)chemicaladmixture,water-reducing(Iignosulfonatetype)chemicaladmixture,high-rangewater-reducingandair-entraining(naphthalene,melamine,polycarboxyl,andamion-sulfonatetypes)chemicaladmixture,drying-shrinkage-reducingchemicaladmixture(glycoletherplusaminoalcoholderivatives),slagcontent,andwc.Thespecimenswereexposedtoatidalpoolfor10yearsusingseawater.Ineachcase,fourspecimenswithoutreinforcementandthreespecimenswithreinforcementwereinvestigatedMaterialsOrdinaryportlandcement(OPC)andblendedcementsbyreplacingaportionofthecementwithslagpowderwereused.TwokindsofslagpowderswereusedwithBlainefinenessofabout7900cm2gag1)and4080cm2g(Slag2).ThephysicalpropertiesandchemicalanalysisofthecementandslagpowdersarelistedinTable1.Riversandandcrushedgranitecoarseaggregateswereused.Thespecificgravity,waterabsorption,andfinenessmodulusofsand(passingthrough0.20in.5mmsieveopeningsize)are2.63,1.63and2.73,respectively.ThecharacteristicsofCFRPtendons/CFCCstrandsaresummarizedinTable2Specimens123456789101112131415161718192021222324Plainandreinforcedcylinderspecimensofdiameter3.94in.(100mm)andlength7.87in.(200mm)wereinvestigated.ThetestsetupisshowninFig.1.Roundsteelbarsofdiameter0.35in.(9mm)andlength5.51in.(140mm)wereembeddedatcoverdepthsof0.79and1.79in.(20and45.5mm).ItemsofinvestigationAttheageof28days,plainconcretespecimensweretestedforcompressivestrengthandYoung,smodulusofelasticityofconcreteasperJISAl108andJSCEG502,respective