英文学术报告范例.ppt
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ExperimentalStudyonCompressivePropertiesofUltrahighToughnessCementitiousCompositesLayoutnBackgroundnExperimentalProgramnExperimentalResultsComparisonofcompressivestrengthbetweenUHTCCandmatrixComparisonofstrainatpeakstressbetweenUHTCCandmatrixnnAtheoreticalstress-straincurvemodelAtheoreticalstress-straincurvemodelnnConclusionsConclusionsBackgroundnNumbersofstudiescarriedoutpermeabilityandcarbonationpropertiestensileandbendingpropertiesfreeze-thawpropertiesnnouniformtestavailableforthecompressivepropertiesnstructuralapplicationsarelimitedExperimentalProgramForserialnumberfrom1to5,thesand-binderratiowasvariedfrom30to45%withotherparametersconstant.Forserialnumberfrom6to9,thewater-binderratiowasvariedfrom28to35%withotherparametersconstant.Forserialnumberfrom10to13,themineraladmixture-binderratiowasvariedfrom50to80%withotherparametersconstant.ExperimentalProgramTable1.SpecimenInformationofEachGroupTable1.SpecimenInformationofEachGroupTestseriesSpecimenshapeSpecimensize/mmSpecimennumberSuffixrepresentationUHTCCPrism40401609ap40uMatrixPrism40401609ap40mResultsComparisonofcompressivestrengthFig.1.ComparisonofprismcompressivestrengthbetweenUHTCCandmatrixResultsComparisonofstrainatpeakstressFig.3.ComparisonofstrainatpeakstressbetweenUHTCCandmatrixTheoreticalmodelAscendingbranch:
Strainhardeningbranch:
Descendingbranch:
Horizontalbranch:
Comparisonofstress-straincurvesnThechartshowsthecomparisonbetweenthepredictionsandthetestdataofUHTCCnThepredictedcurvesareobtainedbyusingtheexperimentalstrainvalueatpeakstressinsteadofthefixedvalueof0.002.ComparisonofcompressivestrengthConclusionsnTheprismcompressivestrengthdecreasesbecauseofthefiberaddition.nThestrainatpeakstressislargerthanthatofmatrixbecauseofthefiberadditionnAtheoreticalmodelisprovidewhichisneededformodelingitsmechanicalbehaviororforpermittingitsuseinvariousstructuralapplications.ThankYou!