期刊《ACIJournal》论文投稿模板.docx

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1、12345678910111213141516171819202122232425DurabilityofConcreteinTidalEnvironment(70CharactersMaximum,Titlecasepreferred)byJohnSmithandDavidLee(NOTE:Thetitle,names,text,equations,tablesandfigureshavebeenalteredandpastedfromdifferentmanuscriptsforthepurposeofformatillustrationONLY.ThiSformatCanbeUSedas

2、atemplatetoCoPyandDaSteyourmanuscripttitlesandsections.)Biography:(75WordsMaximumforeachauthor)AClmemberJohnSmithisaResearchEngineerattheMaterialsDivision,PortandAirportResearchInstitute,HereceivedhisBSfrom;MSfrom;andPhDfromHeisamemberofACICommittees221(Aggregates),302(Constructionofconcretefloors),

3、and325(Concretepavements).Hisresearchinterestsincludedurabilityofreinforcedconcretestructuresinthemarineenvironment.DavidLeeisaresearcheratABSTRACT(orSYNOPSIS)(150WordsMaximum)Adetailedinvestigationontheconcretespecimens(3.94in.1100mmdiameterand7.87in.1200mmheight)(UnitsofmeasurementmustbeSIprimaryo

4、rdualunitsifUSin.-lb)madewithdifferentchemicaladmixtureswascarriedoutafter10yearsoftidalexposure.Chemicaladmixturesincludeair-entrainingadmixture(vinsol),water-reducingadmixture(Iingosulfonategroup),varioushigh-rangewater-reducingandair-entrainingadmixtures(naphthalene,melamine,polycarboxylandamino-

5、sulfbnategroup)anddrying-shrinkage-reducingadmixture(glycoletherplusaminoalcoholderivatives).Thespecimensweretestedforcompressivestrength,Youngsmodulusofelasticity,carbonationdepths,chlorideingress,123456789101112131415161718192021222324poresizedistribution,electrochemicalandphysicalevaluationofstee

6、lbar,scorrosioninconcrete,examinationofsteel-concreteinterfaces,andmineralogyofthemortarportionsofconcreteKeywords:(9KeywordsMaximum;alphabeticalorder)chemicaladmixture;chlorideingress;corrosion;durability;INTRODUCTIONWater-reducingchemicaladmixturesareusedtoproduceconcreteofhigherstrength,obtainasp

7、ecifiedstrengthatlowerwater-cementitiousratios(wc),orincreasetheslumpofagivenmixturewithoutanincreaseinwatercontent.Numerousstudiesonthepropertiesoffreshconcretemixedwithdifferentchemicaladmixtureswerecarriedouttoinvestigatethefreshconcretepropertiesortheconcretepropertiesatanearlyageofexposure.Ther

8、ewerealsoseveralinternationalconferencesheldfocusingonthechemicaladmixturesinthelastcoupleofdecades.Detailedstudiesonthelong-termperformanceofconcretemixedwithdifferentchemicaladmixtures,however,areveryscarceinthetechnicalliterature.Therefore,studiesonthelong-termperformanceofchemicaladmixtureswillb

9、eRESEARCHSIGNIFICANCE(100WordsMaximum)Differenttypesofhigh-rangewater-reducingandair-entrainingchemicaladmixturesweredevelopedinthelastcoupleofdecades.Mostofthestudiesontheseadmixtureswerecarriedouttojudgethepropertiesoffreshconcrete,orthepropertiesofconcreteatanearlyage.Studiesonthelong-termperform

10、anceofconcretemadewithdifferentwater-reducingadmixturesareveryscarceinthetechnicalliteratures.Theauthorsbelievethatthisdetailstudydealingwiththelong-termperformanceofdifferentchemicaladmixturesiscarriedoutforthefirsttimeandwillbeveryusefultoconcretetechnology.1234567891011121314151617181920212223242

11、5EXPERIMENTALINVESTIGATION(OREXPERIMENTALPROCEDURE)Cylinderspecimenswithandwithoutsteelreinforcements(3.94in.100mmdiameterand7.87in.200mmheight)of19separatecaseswereinvestigated.Thevariablesincludecementtypes(ordinaryportlandcement,blendedcementreplacedbyslagpowderof4080and7900cm2g),air-entraining(v

12、insol)chemicaladmixture,water-reducing(Iignosulfonatetype)chemicaladmixture,high-rangewater-reducingandair-entraining(naphthalene,melamine,polycarboxyl,andamion-sulfonatetypes)chemicaladmixture,drying-shrinkage-reducingchemicaladmixture(glycoletherplusaminoalcoholderivatives),slagcontent,andwc.Thesp

13、ecimenswereexposedtoatidalpoolfor10yearsusingseawater.Ineachcase,fourspecimenswithoutreinforcementandthreespecimenswithreinforcementwereinvestigatedMaterialsOrdinaryportlandcement(OPC)andblendedcementsbyreplacingaportionofthecementwithslagpowderwereused.TwokindsofslagpowderswereusedwithBlainefinenes

14、sofabout7900cm2gag1)and4080cm2g(Slag2).ThephysicalpropertiesandchemicalanalysisofthecementandslagpowdersarelistedinTable1.Riversandandcrushedgranitecoarseaggregateswereused.Thespecificgravity,waterabsorption,andfinenessmodulusofsand(passingthrough0.20in.5mmsieveopeningsize)are2.63,1.63and2.73,respec

15、tively.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