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ExperimentalStudyonCompressivePropertiesofUltrahighToughnessCementitiousCompositesLayoutBackgroundExperimentalProgramExperimentalResultsComparisonofcompressivestrengthbetweenUHTCCandmatrixComparisonofstrainatpeakstressbetweenUHTCCandmatrixAtheoreticalstress-straincurvemodelConclusionsBackgroundNumbersofstudiescarriedoutpermeabilityandcarbonationpropertiestensileandbendingpropertiesfreeze-thawpropertiesnouniformtestavailableforthecompressivepropertiesstructuralapplicationsarelimitedExperimentalProgramForserialnumberfrom1to5,thesand-binderratiowasvariedfrom30to45%withotherparametersconstant.Forserialnumberfrom6to9,thewater-binderratiowasvariedfrom28to35%withotherparametersconstant.Forserialnumberfrom10to13,themineraladmixture-binderratiowasvariedfrom50to80%withotherparametersconstant.ExperimentalProgramTable1.SpecimenInformationofEachGroupTestseriesSpecimenshapeSpecimensize/mmSpecimennumberSuffixrepresentationUHTCCPrism40×40×1609ap40uMatrixPrism40×40×1609ap40mResultsComparisonofcompressivestrengthFig.1.ComparisonofprismcompressivestrengthbetweenUHTCCandmatrixResultsComparisonofstrainatpeakstressFig.3.ComparisonofstrainatpeakstressbetweenUHTCCandmatrixTheoreticalmodelAscendingbranch:12ccStrainhardeningbranch:Descendingbranch:Horizontalbranch:12ccc3232(0.20.8)ccccc3cc3232(0.20.8)ccccc3cc0.2cComparisonofstress-straincurvesThechartshowsthecomparisonbetweenthepredictionsandthetestdataofUHTCCThepredictedcurvesareobtainedbyusingtheexperimentalstrainvalueatpeakstressinsteadofthefixedvalueof0.002.ComparisonofcompressivestrengthConclusionsTheprismcompressivestrengthdecreasesbecauseofthefiberaddition.ThestrainatpeakstressislargerthanthatofmatrixbecauseofthefiberadditionAtheoreticalmodelisprovidewhichisneededformodelingitsmechanicalbehaviororforpermittingitsuseinvariousstructuralapplications.ThankYou!