雨课堂学堂在线学堂云《Road Constructional Materials（河北交通职业技术学院）》单元测试考核答案

第1题Thespecimenshapeusedforthecompressivestrengthtestofrockmustbeacylinder.第2题Thecontainerforaggregateisselectedbasedonthenominalmaximumparticlesize,butacontainercanbechosenforaone-sizelargerparticlesize.第3题Thesievecurveofsandcanrepresentboththeparticlesizedistributionandthefinenessmodulusofthesand.第4题Whendeterminingthebulkdensityofaggregateinitsnaturalstate,theaggregatecanbepouredintothecontainerfromanyheight.第5题Thefinenessmoduluscanreflectthecoarsenessofsandtoacertainextent,butitcannotfullyrepresenttheparticlesizedistributionofthesand.第6题Thescreeningtestforcoarseaggregateusedin()mustusethewetsievingmethod.ACementconcreteBAsphaltmixtureCPavementbaseDRoadbed正确答案：BC第7题Thesamplingamountforaggregatetestingdependson().AMaximumparticlesizeBNominalmaximumparticlesizeCTestitemDTestfrequency正确答案：BCD第8题Theapparentdensityofcoarseaggregatemeasuredatdifferentwatertemperaturesneedstobecorrectedforwatertemperature,andthecorrectionisrelatedtothe()parameter.ADensityofwateratdifferenttesttemperaturesBDensityofwaterat4°CCWatertemperaturecorrectionfactorDDrymassofcoarseaggregate正确答案：AC第9题Thegradationparametersoffineaggregatereferto().AFinenessmodulusBIndividualpercentageretainedCCumulativepercentageretainedDPassingpercentage正确答案：BCD第10题Forcementconcrete,sandwithafinenessmodulusof1.6to3.7isrecommended,andthefinenessmodulusof()fallswithinthisrange.ACoarsesandBMediumsandCFinesandDExtra-finesand正确答案：ABC第11题Thestandarddividessandforordinaryconcreteintothreegradationzonesbasedon().A细度模数FinenessmodulusB0.6mm筛孔的累计筛余百分率Cumulativepercentageretainedfora0.6mmsieveC1.18mm筛孔的累计筛余百分率Cumulativepercentageretainedfora1.18mmsieveD0.6mm筛孔的通过百分率Passingpercentagefora0.6mmsieve第12题Twotypesofsandwiththesamefinenessmodulushave()gradation.ADefinitelythesameBDefinitelydifferentCNotnecessarilythesameDCannotbecompared第13题Inasphaltmixture,thedividingparticlesizebetweencoarseandfineaggregateis()mm,andincementconcreteaggregate,thedividingparticlesizeis()mm.A2.36and2.36B4.75and4.75C2.36and4.75D4.75and2.36第14题Thephysicalconstantunrelatedtoporevolumeis().ATruedensityBApparentdensityCGross(orbulk)volumedensityDBulkdensity第15题Coarseaggregateservesasthe()inthemixture.AFrameworkBFillerCBulkDDispersion第1题Intheapparentdensitytestoffineaggregates,thearithmeticmeanoftwoparalleltestresultsistakenasthemeasuredvalue.Ifthedifferencebetweenthetworesultsexceeds0.01g/cm³,anewsampleshouldbetakenforre-testing.第2题Themeshbasketmethodcansimultaneouslymeasurethe()ofthespecimen.AApparentdensityBBulkvolumedensityCDryapparentdensityDWaterabsorptionrate正确答案：ABCD第3题Intheapparentdensitytestoffineaggregatesbyvolumetricflasks,theparametersthatneedtobemeasuredare:().ADrymassofthesandsampleBMassofwaterandthevolumetricflaskCMassofsandsample,water,andthevolumetricflaskDDensityofwateratthetesttemperature正确答案：ABCD第4题Thegradingparametersoffineaggregatesreferto:().AFinenessmodulusBPercentageofmaterialremainingoneachsieveCCumulativepercentageretainedDPercentagepassing正确答案：BCD第5题Inthewater-washingsievetestforfineaggregates,whatshouldtheresidualmassonthe0.075mmsievebe?ADrymassofthesandsamplebeforethetest-DrymassofthewashedsandsampleBDrymassofthesandsamplebeforewashingCDrymassofthewashedsandsampleD水洗后筛底试样质量Massofthewashedsampleremainingatthebottomofthesieve第6题Intheapparentdensitytestofsandbyvolumetricflasks,ifthedifferencebetweentwoparalleltestresultsisgreaterthan()g/cm³,anewsampleshouldbetakenforre-testing.A0.01B0.02C0.05D0.1第7题Intheapparentdensitytestforcoarseaggregates,youcansoakthesamplefor24hourstoeliminatethefluenceof().APoreBVoidCOpenporesDClosedpores第8题Thesievetestforfineaggregatesshouldbeperformedtwiceinparallel,withtheaveragevaluetakenasthemeasuredvalue.Ifthedifferenceinfinenessmodulusbetweenthetwotestsexceeds(),are-testshouldbeconducted.A0.01B0.02C0.2D0.3第9题Whatisthesequenceofbulkdensity,apparentdensity,andbulkvolumedensityofcoarseaggregates().ABulkvolumedensity>Apparentdensity>BulkdensityBBulkdensity>Bulkvolumedensity>ApparentdensityCBulkdensity>Apparentdensity>BulkvolumedensityDApparentdensity>Bulkvolumedensity>Bulkdensity第10题Gradingisthearrangementofaggregateparticlesizes,anditaffectsimportantaggregateparameterssuchas().AParticlesizeBCrushingvalueCGradingDPorosity第11题Thesandwithafinenessmodulusof2.90is().ACoarseBMediumCFineDVeryfine第12题Whatistherelationshipbetweentheapparentdensityandbulkvolumedensityofaggregates?AGreaterthanBLessthanCCannotbedeterminedTest第1题Mineralmixturesconsistofcrushedstone,stonechips,sand,andmineralpowder,andthetrialmethodcanbeusedtodeterminetheproportionofeachmaterial.第2题Intheapparentdensitytestforfineaggregate,thearithmeticaverageoftheresultsfromtwoparalleltestsisusedasthemeasurementvalue.Ifthedifferencebetweenthetworesultsexceeds0.01g/cm³,aretestshouldbeconducted.第3题Themaximumdensitycurveofmineralmixturesisanexperimentallyproposedtypeof:().AActualcurveBIdealcurveCTheoreticalcurveDCurverange正确答案：BC第4题Thewirebasketmethodcansimultaneouslymeasurethe()ofthespecimen.AApparentdensityBBulkvolumedensityCDrydensityDWaterabsorptionrate正确答案：ABCD第5题Inthetestoffineaggregateapparentdensitybyvolumetricflasks,theparametersthatneedtobemeasuredinclude:().AThedriedmassofthesandsampleBThemassofwaterandthevolumetricflaskCThemassofsandsample,water,andthevolumetricflaskDThedensityofwaterattesttemperature正确答案：ABCD第6题Thegradationparametersforfineaggregatereferto:().AFinenessmodulusBIndividualsieveresiduepercentageCCumulativesieveresiduepercentageDPassingpercentage正确答案：BCD第7题Intheapparentdensitytestofsandbyvolumetricflasks,ifthedifferencebetweentwoparalleltestresultsisgreaterthan()g/cm³,anewsampleshouldbetakenforre-testing.A0.01B0.02C0.05D0.1第8题Gradingisthearrangementofaggregateparticlesizes,anditaffectsimportantaggregateparameterssuchas().AParticlesizeBCrushingvalueCParticlesizeDPorosity第9题Ifthefinenessmodulusofasandis2.90,itshouldbelongto()sand.ACoarseBMediumCFineDExtrafine第10题Whatistherelationshipbetweentheapparentdensityandbulkvolumedensityofaggregates?AGreaterthanBLessthanCUnabletodetermine第11题Then-thpowerformulaforthemaximumdensitycurveaddressesthe()problemintheactualpreparationprocessofmineralmixtures.AContinuousgradationBDiscontinuousgradationCGradationcurveDGradationrange第12题Thetheoryofthemaximumdensitycurveproposesanideal()curve.AContinuousgradationBDiscontinuousgradationCOpengradationDDensegradation第13题Inthewater-washingsievetestforfineaggregates,whatshouldtheresidualmassonthe0.075mmsievebe?AThedriedmassofthesamplebeforethe-driedmassofthewashedsandsampleBThedriedmassofsandsamplebeforewashingCThedriedmassofwashedsandsampleDThemassofthewashedsampleatthesievebottom第14题Intheapparentdensitytestforcoarseaggregates,soakingthesamplefor24hoursaimstoeliminatetheinfluenceof().APoresBVoidsCOpenporosityDClosedporosity第15题Thesievetestforfineaggregatesshouldbeperformedtwiceinparallel,withtheaveragevaluetakenasthemeasuredvalue.Ifthedifferenceinfinenessmodulusbetweenthetwotestsexceeds(),are-testshouldbeconducted.A0.01B0.02C0.02D0.03第16题Whatisthesequenceofbulkdensity,apparentdensity,andbulkvolumedensityofcoarseaggregates().ABulkvolumedensity>apparentdensity>bulkdensityBBulkdensity>bulkvolumedensity>apparentdensityCBulkdensity>apparentdensity>bulkvolumedensityDApparentdensity>bulkvolumedensity>bulkdensityTest第1题The"R"incementstrengthgrade42.5Rrepresentshigh-early-strength.第2题Thefullnameofthestandardsandusedinthecementmortarstrengthtestis"ChinaISOStandardSand."第3题Incementproduction,themoregypsumadded,thebetter.第4题Toproducecement,clinker,partialadmixtures(ornone),andanappropriateamountofgypsumaregroundtogether.Whatisthepurposeofaddingsum?ACostreductionBIncreasefinenessCImprovechemicalpropertiesDRetardation第5题Thefinalsettingtimeofcementis().AThetimefromwhenwaterisaddedtocementuntilitlosesfluidityBThetimefromwhenwaterisaddedtocementuntilthecementpastebeginstoloseplasticityCThetimefromwhenwaterisaddedtocementuntilthecementpastecompletelylosesplasticityDAlloftheabovestatementsareacceptable.第6题Amagnesiumoxidecontentof()isthedividinglinebetweencalcareousquicklimeandmagnesianquicklime.A5%B10%C15%D4%第7题Inthecementstabilitytest,iftheaverageincreaseindistancebetweenthetwospecimensintheLeChatelierclampisnotgreaterthan()afterboiling,thecementisconsideredstable.A4mmB5mmC6mmD7mm第8题Whenthecementinspectionreportisusedasthebasisforacceptanceinspection,thesealedcementsampleshouldbestoredfor()month(s).AOneBTwoCThreeDFour第9题WhenusingtheVicatapparatustomeasuretheinitialsettingtimeofcement,thedistanceof()betweentheneedleandthebaseplateisusedasthestandardfordeterminingtheinitialsettingstateofcementpaste.A3mm±1mmB4mm±1mmC5mm±1mmD6mm±1mm第10题Themostimportantindicatorforevaluatinglimequalityis()AActiveCalciumOxideandMagnesiumOxideContentBFinenessCCarbondioxidecontentDVolumestability第11题Toeliminatethehazardsof"over-burntlime,"itcanbeagedforhalfamonthafterslakingbeforeuse.第12题Theflexuralstrengthofcementistheaverageresultofasetofthreeprismspecimens.Ifanyofthethreevaluesexceeds±10%oftheaverage,themiddlevalueshouldbeusedasthetestresult.第13题Finequicklimepowdershouldbestoredinadrywarehousewithstrictwaterproofingmeasures.第14题Cementisahydraulicbinder,soitisnotaffectedbymoistureduringtransportationandstorage.第15题Thestrengthgradeofcementisclassifiedbasedonitsthree-daycompressivestrength.第16题Air-settingbindershardenonlyinair,whilehydraulicbindershardenonlyinwater.第17题ThehighertheCO₂contentinquicklime,thebetteritscementingperformance.第18题The3dstrengthtestofcementmortarshouldbeconductedwithin()time.A72h±30minB72h±45minC72h±1hD72h±3h第19题Thestandardspecimensizeforthecementmortarstrengthtestis().A150mm×150mm×150mmB40mm×40mm×160mmC70.7mm×70.7mm×70.7mmD50mm×50mm×50mm第20题Thehardeningoflimemainlyoccursthrough().AO2BCO2CH2ODCO2和H2OTest第1题Residualstabilityisanindicatorforevaluatingthewaterstabilityofasphaltmixtures.第2题Thehighertheadhesiongradeofasphalttoaggregate,thebettertheadhesionbetweenasphaltandaggregate.第3题Thelargerthe,thebetterthewaterstabilityoftheasphaltmixture.第4题Boththeoil-stoneratioandasphaltcontentcanbeusedtorepresenttheamountofasphaltinthemixture.Forthesamemixture,whentheasphaltcontentis5%,theoil-stoneratiois4.7%.第5题Whatarethestagesinvolvedinasphaltmixturedesign?APreliminarymixratioBTargetmixratioCProductionmixratioDVerificationofproductionmixratio正确答案：BCD第6题Whatistheprimaryeffectofwaxonthepavementperformanceofasphalt?AAsphaltsoftensathightemperatures.BAsphaltbecomesbrittleatlowtemperatures.CTheadhesionperformancebetweenaggregateandasphaltisaffected.DThepavementskidresistanceisaffected.正确答案：ABCD第7题Whichofthefollowingiscorrectregardingtheapplicableconditionsforthewaterdisplacementmethod,surface-driedmethod,wax-sealedmethod,andvolumemethod?AThewaterweighingmethodissuitableformeasuri