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1、FSN:14511EffectofHighChlidebearingdinaryPtlCementonCompressiveStrengthChlideTransptPropertiesofConcreteAtriNath1SeepKadam2SudhirkumarBarai3SubratoChowdhury41.MTechStudentDepartmentofCivilEngineeringIITKharagpurWestBengal

2、–721302.India24.CentralR&DUltraTechCementLimitedMumbaiMaharashtra–400093.India3.DepartmentofCivilEngineeringIITKharagpurWestBengal–721302.IndiaAbstractUsageofalternatematerialsbecomesafocusedagendatowardssustainabilityin

3、itiativesmesofthedepletingstockofnonrenewableresources.Materialacteristicshaveperpetuallybeenchangingowingtogeologicaltransfmation.Constituentsfmakingconcretenowarevastlydifferentthanwhatitwas100yearsbackeven10yearsback.

4、Presenceofchlideinmanycementmakingingredientsareprogressivelyrisingresultinginhigherchlidecontentincement.ThispaperreptsanexperimentalinvestigationcarriedouttoevaluatetheinfluenceofhighchlidebearingdinaryPtlCement(OPC)on

5、thechlidetransptpropertiesofconcretesystem.AnumberofconcretemixturewerepreparedusingdifferentOPCshavingchlidecontent0.10.20.3%bymasswatercementratio(wc)0.30.40.50.6followingthesameaggregatesmixingprotocol.Theresultsugges

6、tsthatthecompressivestrengthoftheconcreteattheearlyageincreaseswithincreaseddosageofchlidecontentincement.Howeveritsinfluenceon28daysisnotsignificant.Thestudyhasdemonstratedaninfluenceofchlidecontentonthecompressivestren

7、gthofconcrete.ConcretemadewithidenticalwcdoesnotexhibitsignificantchangeinRCPTvaluesfallclassesofconcreteindicatingthatthechlidetransptacteristicoftheconcreteisnotgreatlyinfluencedbychliderichnessofcementitiousmaterial.A

8、napproachfpredictionofcrosioninitiationinconcreteispresentedusingmodelingtechnique.Outcomeofthisexercisehasgivensomeframewktowardspredictionofchlidethresholdvalueleadingtocrosioninconcrete.iginalityPresentwkdetailsanexpe

9、rimentalinvestigationonhardenedstateperfmanceoftheconcreteusinghighchlidebearingPtlcementwithanobjectiveofexaminingit’ssuitabilityfconcretemaking.Thestudyexplainsabouttwoimptantperfmanceparameterscompressivestrengthchlid

10、etransptpropertiesofconcreteusingchliderichPtlcementatlabatyscale.Withrapidlyincreasingconsumptionofcementgloballytheavailabilityofcementgraderawmaterialhasbecomeamajconcernfcementmanufacturers.Theamountofimpuritieslikec

11、hlidehasbeenincreasingprogressively.Howevertheconcreteusershavealwaysbeenapprehensivetowardsusageofchliderichmaterialfconcretemaking.Itisbelievedthatsuchefftswillcontributepositivelytowardsmitigatingtheuserconcernsothatt

12、hecementgraderawmaterialswithslightlyhigherlevelofimpuritieslikechlidecanbeutilizedfcementproduction.Keywds:chlidepermeabilitychlidetransptproperties1Crespondingauth:subrato.chowdhury@Tel912266928406Fax912266928403FSN:14

13、513Table1PhysicalpropertiesofcementSpecificgravity3.137NmalConsistency29.5%Initialsettingtime150minutesFinalsettingtime225minutesFineness318m2kgSoundnessa.Lechatexpansionb.Autoclaveexpansion0.9mm0.072%Compressivestrength

14、a.3daysb.7daysc.28days41.6MPa50.6MPa63.5MPaPerfmanceimprovera.Limestone4%2.1MaterialsCompositionofConcreteConcreteMixtureProtocolThephysicalchemicalpropertiesofcementislistedinTable1Table2wasusedasbinderalthroughouttheex

15、periments.Riversasfineaggregatecrushedstoneascoarseaggregatewereusedinthestudy.Fenhancedunifmityinchlidedistributionslabatygradesodiumchlidewasuseditwasmixedwiththemixingwaterofconcretefpropermixing.Alabatypanmixtureof90

16、literswasemployedfmixingtheconcretewascompactedusingtablevibrat.Table2:ChemicalpropertiesofcementChemicalNameTestResult(%)Al2O3Fe2O31.30InsolubleResidue1.57Magnesia1.11SulphuricAnhydride2.45TotalLossonIgnition2.68TotalCh

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