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1、ExperimentalStudyonCompressivePropertiesofUltrahighToughnessCementitiousCompositesLayoutBackgroundExperimentalProgramExperimentalResultsComparisonofcompressivestrengthbetweenUHTCCandmatrixComparisonofstrainatpeakstressbetweenUHTCCandmatrixAtheoreticalstress-straincurvemodelConclusionsB
2、ackgroundNumbersofstudiescarriedoutpermeabilityandcarbonationpropertiestensileandbendingpropertiesfreeze-thawpropertiesnouniformtestavailableforthecompressivepropertiesstructuralapplicationsarelimitedExperimentalProgramForserialnumberfrom1to5,thesand-binder ratiowasvariedfrom30to45%wit
3、hotherparametersconstant.Forserialnumberfrom6to9,thewater-binderratiowasvariedfrom28to35%withotherparametersconstant.Forserialnumberfrom10to13,themineraladmixture-binderratiowasvariedfrom50to80%withotherparametersconstant.ExperimentalProgramTable1.SpecimenInformationofEachGroupTestseri
4、esSpecimenshapeSpecimensize/mmSpecimennumberSuffixrepresentationUHTCCPrism40×40×1609ap40uMatrixPrism40×40×1609ap40mResultsComparisonofcompressivestrengthFig.1.ComparisonofprismcompressivestrengthbetweenUHTCCandmatrixResultsComparisonofstrainatpeakstressFig.3.Comparisonofstrainatpeakstr
5、essbetweenUHTCCandmatrixTheoreticalmodelAscendingbranch:Strainhardeningbranch:Descendingbranch:Horizontalbranch:Comparisonofstress-straincurvesThechartshowsthecomparisonbetweenthepredictionsandthetestdataofUHTCCThepredictedcurvesareobtainedbyusingtheexperimentalstrainvalueatpeakstressi
6、nsteadofthefixedvalueof0.002.ComparisonofcompressivestrengthConclusionsTheprismcompressivestrengthdecreasesbecauseofthefiberaddition.ThestrainatpeakstressislargerthanthatofmatrixbecauseofthefiberadditionAtheoreticalmodelisprovidewhichisneededformodelingitsmechanicalbehaviororforpermitt
7、ingitsuseinvariousstructuralapplications.ThankYou!
