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1、ExperimentalStudyonCompressivePropertiesofUltrahighToughnessCementitiousCompositesLayoutBackgroundExperimentalProgramExperimentalResultsComparisonofcompressivestrengthbetweenUHTCCandmatrixComparisonofstrainatpeakstressbetweenUHTCCandmatrixAtheoreticalstress-straincurvemodelConclusionsBackgrou
2、ndNumbersofstudiescarriedoutpermeabilityandcarbonationpropertiestensileandbendingpropertiesfreeze-thawpropertiesnouniformtestavailableforthecompressivepropertiesstructuralapplicationsarelimitedExperimentalProgramForserialnumberfrom1to5,thesand-binder ratiowasvariedfrom30to45%withotherparamete
3、rsconstant.Forserialnumberfrom6to9,thewater-binderratiowasvariedfrom28to35%withotherparametersconstant.Forserialnumberfrom10to13,themineraladmixture-binderratiowasvariedfrom50to80%withotherparametersconstant.ExperimentalProgramTable1.SpecimenInformationofEachGroupTestseriesSpecimenshapeSpecim
4、ensize/mmSpecimennumberSuffixrepresentationUHTCCPrism40×40×1609ap40uMatrixPrism40×40×1609ap40mResultsComparisonofcompressivestrengthFig.1.ComparisonofprismcompressivestrengthbetweenUHTCCandmatrixResultsComparisonofstrainatpeakstressFig.3.ComparisonofstrainatpeakstressbetweenUHTCCandmatrixTheo
5、reticalmodelAscendingbranch:Strainhardeningbranch:Descendingbranch:Horizontalbranch:Comparisonofstress-straincurvesThechartshowsthecomparisonbetweenthepredictionsandthetestdataofUHTCCThepredictedcurvesareobtainedbyusingtheexperimentalstrainvalueatpeakstressinsteadofthefixedvalueof0.002.Compar
6、isonofcompressivestrengthConclusionsTheprismcompressivestrengthdecreasesbecauseofthefiberaddition.ThestrainatpeakstressislargerthanthatofmatrixbecauseofthefiberadditionAtheoreticalmodelisprovidewhichisneededformodelingitsmechanicalbehaviororforpermittingitsuseinvariousstructuralapplications.T
7、hankYou!
