2025 ACI EXAM QUESTIONS WITH
CORRECT ANSWERS
TheAendAofAtheAtemperatureAmeasuringAdeviceAmustAbeAsubmergedAaAminimumAofA______?A-
ACORRECTAANSWERA-3"
WhatAisAtheArequiredAcapabilityArangeAonAtheAtemperatureAmeasuringAdevice?A-ACORRECTAANSWERA-
30AdegreesAFA-A120AdegreesAF
TheAtemperatureAmeasuringAdeviceAshallAbeAverifiedA__________,AorAwheneverAthereAisAaAquestionAofA__
_______.A-ACORRECTAANSWERA-annually,Aaccuracy
TheAtemperatureAofAconcreteAmayAbeAmeasuredAinAaAwheelbarrow.ATrueAorAFalse?A-ACORRECTAANSWERA-
TRUE
TheAtemperatureAofAconcreteAmayAbeAmeasuredAinAaAwallAform.ATrueAorAFalse?A-ACORRECTAANSWERA-
TRUE
AAcompositeAsampleAofAconcreteAisArequiredAevenAifAtheAonlyApurposeAforAobtainingAtheAsampleAisAtoAdete
rmineAtemperature.ATrueAorAFalse?A-ACORRECTAANSWERA-FALSE
WhatAmustAbeAdoneAtoAtheAsampleAcontainerApriorAtoAsamplingAconcrete?A-ACORRECTAANSWERA-
DampenAtheAsurfaceAwithAwater.
WhatAmustAbeAdoneAtoAtheAconcreteAsurroundingAtheAtemperatureAmeasuringAdeviceAafterAtheAdeviceAisAs
ubmergedAinAtheAfreshAconcrete?A-ACORRECTAANSWERA-
GentlyApushAtheAsurroundingAconcreteAbackAaroundAtheAtemperatureAmeasuringAdeviceAnearAtheAsurface.
HowAlongAmustAtheAtemperatureAmeasuringAdeviceAremainAinAtheAfreshlyAmixedAconcrete?A-
ACORRECTAANSWERA-2A-A5Aminutes.
AfterAtheAtemperatureAofAconcreteAisAread,AwhatAisAthenArequired.A-ACORRECTAANSWERA-
ReportAtheAtemperatureAofAtheAconcreteAtoAtheAnearestA1.0AdegreeAF.
,TheAtemperatureAofAtheAconcreteAisAreportedAtoAtheAnearestA________C.A_________F.A-
ACORRECTAANSWERA-0.5AdegreeAC,A1.0AdegreeAF
AccordingAtoAASTMAC1064AwhatAisAoneAreasonAtoAtakeAtheAtemperatureAofAconcrete?A-
ACORRECTAANSWERA-VerifyAconformanceAtoAaAspecifiedArequirement.
AAmaximumAtemperatureAofAfreshlyAmixedAconcreteAisAspecifiedAinATestAMethodAC1064.ATrueAorAFalse?A-
ACORRECTAANSWERA-FALSE
TheAsampleAofAconcreteAusedAforAtemperatureAdeterminationAmustAbeAroddedA25Atimes.ATrueAorAFalse?A-
ACORRECTAANSWERA-FALSE
WhatAisAtheAreasonAforApressingAconcreteAaroundAtheAtemperatureAmeasuringAdevice?A-
ACORRECTAANSWERA-
SoAthatAtheAambientAairAtemperatureAdoesAnotAinfluenceAtheAmeasuredAtemperature.
YouAshouldAremoveAtheAtemperatureAmeasuringAdeviceAbeforeAreportingAtheAreading.ATRUEAorAFALSE?A-
ACORRECTAANSWERA-FALSE
WhatAisAtheAASTMAforAmeasuringAtemperatureAonAfreshlyAsampledAconcrete?A-ACORRECTAANSWERA-
C1064
WhatAisAtheAASTMAforASamplingAFreshlyAMixedAConcreteA-ACORRECTAANSWERA-C172
WhatAisAtheAmaximumAelapsedAtimeAforAobtainingAaAcompositeA(twoAorAmoreApart)AsampleAofAconcrete?A-
ACORRECTAANSWERA-15AMinutes
WhatAshouldAbeAdoneAtoAtheAconcreteAsampleAafterAtransportingAitAtoAtheAtestingAsite?A-
ACORRECTAANSWERA-RemixAitAwithAaAshovelAtoAensureAuniformity.
WithinAhowAmanyAminutesAshouldAtestsAbeAstartedAforAslump,AairAcontent,AandAtemperatureAafterAobtaini
ngAaAconcreteAsample?A-ACORRECTAANSWERA-5Aminutes
, TestAcylindersAforAstrengthAshouldAbeAmoldedAwithinA___AminutesAofAtakingAaAconcreteAsample.A-
ACORRECTAANSWERA-15
TheAconcreteAsampleAmustAbeAprotectedAfromA_____,A_____,AsourcesAofArapidA_______________,AandAfr
omA______________________.A-ACORRECTAANSWERA-Sun,AWind,AEvaporation,AContamination.
WhatAisAtheAminimumAconcreteAsampleAsizeAtoAbeAtakenAforAtesting?A-ACORRECTAANSWERA-
28ALitersA/A1Aft3A(OneACubicAFt)
WhenAsamplingAfromAaAstationaryAmixer,AhowAmanyAportionsAshouldAbeAtaken?A-ACORRECTAANSWERA-
TwoAorAmore
WhenAsamplingAfromAaAstationaryAmixer,AfromAwhichAportionAofAtheAbatchAshouldAtheAsamplesAbeAtaken?A
-ACORRECTAANSWERA-TheAmiddleAportion.
WhenAsamplingAfromAaAstationaryAmixer,AwhichAtwoAcollectionAmethodsAareAacceptableAforAobtainingAaAs
ample?A-ACORRECTAANSWERA-1)ADivertingAtheAentireAflow
2)APassingAaAreceptacleAentirelyAthroughAtheAdischargeAstream
WhenAsamplingAfromAaAPavingAMixer,AhowAmanyAsamplesAareArequired?A-ACORRECTAANSWERA-
5AsamplesAminimumA(combinedAintoAoneAcompositeAsample)
WhenAsamplingAfromAaAPavingAMixer,AhowAshouldAtheAsample/sAbeAtaken?A-ACORRECTAANSWERA-
OnceAdischargeAisAcompleteAintoAaApile.
WhatAshouldAbeAavoidedAwhenAtakingAsamplesAfromAaAPavingAMixer?A-ACORRECTAANSWERA-
ContaminationAwithAtheASub-GradeA(ground)
WhenAsamplingAfromAaARevolvingADrumAMixerAorAAgitatorAaAminimumAofAhowAmanyAportionsAshouldAbeAt
aken?A-ACORRECTAANSWERA-TwoAorAmoreA(combinedAintoAoneAcompositeAsample)
CORRECT ANSWERS
TheAendAofAtheAtemperatureAmeasuringAdeviceAmustAbeAsubmergedAaAminimumAofA______?A-
ACORRECTAANSWERA-3"
WhatAisAtheArequiredAcapabilityArangeAonAtheAtemperatureAmeasuringAdevice?A-ACORRECTAANSWERA-
30AdegreesAFA-A120AdegreesAF
TheAtemperatureAmeasuringAdeviceAshallAbeAverifiedA__________,AorAwheneverAthereAisAaAquestionAofA__
_______.A-ACORRECTAANSWERA-annually,Aaccuracy
TheAtemperatureAofAconcreteAmayAbeAmeasuredAinAaAwheelbarrow.ATrueAorAFalse?A-ACORRECTAANSWERA-
TRUE
TheAtemperatureAofAconcreteAmayAbeAmeasuredAinAaAwallAform.ATrueAorAFalse?A-ACORRECTAANSWERA-
TRUE
AAcompositeAsampleAofAconcreteAisArequiredAevenAifAtheAonlyApurposeAforAobtainingAtheAsampleAisAtoAdete
rmineAtemperature.ATrueAorAFalse?A-ACORRECTAANSWERA-FALSE
WhatAmustAbeAdoneAtoAtheAsampleAcontainerApriorAtoAsamplingAconcrete?A-ACORRECTAANSWERA-
DampenAtheAsurfaceAwithAwater.
WhatAmustAbeAdoneAtoAtheAconcreteAsurroundingAtheAtemperatureAmeasuringAdeviceAafterAtheAdeviceAisAs
ubmergedAinAtheAfreshAconcrete?A-ACORRECTAANSWERA-
GentlyApushAtheAsurroundingAconcreteAbackAaroundAtheAtemperatureAmeasuringAdeviceAnearAtheAsurface.
HowAlongAmustAtheAtemperatureAmeasuringAdeviceAremainAinAtheAfreshlyAmixedAconcrete?A-
ACORRECTAANSWERA-2A-A5Aminutes.
AfterAtheAtemperatureAofAconcreteAisAread,AwhatAisAthenArequired.A-ACORRECTAANSWERA-
ReportAtheAtemperatureAofAtheAconcreteAtoAtheAnearestA1.0AdegreeAF.
,TheAtemperatureAofAtheAconcreteAisAreportedAtoAtheAnearestA________C.A_________F.A-
ACORRECTAANSWERA-0.5AdegreeAC,A1.0AdegreeAF
AccordingAtoAASTMAC1064AwhatAisAoneAreasonAtoAtakeAtheAtemperatureAofAconcrete?A-
ACORRECTAANSWERA-VerifyAconformanceAtoAaAspecifiedArequirement.
AAmaximumAtemperatureAofAfreshlyAmixedAconcreteAisAspecifiedAinATestAMethodAC1064.ATrueAorAFalse?A-
ACORRECTAANSWERA-FALSE
TheAsampleAofAconcreteAusedAforAtemperatureAdeterminationAmustAbeAroddedA25Atimes.ATrueAorAFalse?A-
ACORRECTAANSWERA-FALSE
WhatAisAtheAreasonAforApressingAconcreteAaroundAtheAtemperatureAmeasuringAdevice?A-
ACORRECTAANSWERA-
SoAthatAtheAambientAairAtemperatureAdoesAnotAinfluenceAtheAmeasuredAtemperature.
YouAshouldAremoveAtheAtemperatureAmeasuringAdeviceAbeforeAreportingAtheAreading.ATRUEAorAFALSE?A-
ACORRECTAANSWERA-FALSE
WhatAisAtheAASTMAforAmeasuringAtemperatureAonAfreshlyAsampledAconcrete?A-ACORRECTAANSWERA-
C1064
WhatAisAtheAASTMAforASamplingAFreshlyAMixedAConcreteA-ACORRECTAANSWERA-C172
WhatAisAtheAmaximumAelapsedAtimeAforAobtainingAaAcompositeA(twoAorAmoreApart)AsampleAofAconcrete?A-
ACORRECTAANSWERA-15AMinutes
WhatAshouldAbeAdoneAtoAtheAconcreteAsampleAafterAtransportingAitAtoAtheAtestingAsite?A-
ACORRECTAANSWERA-RemixAitAwithAaAshovelAtoAensureAuniformity.
WithinAhowAmanyAminutesAshouldAtestsAbeAstartedAforAslump,AairAcontent,AandAtemperatureAafterAobtaini
ngAaAconcreteAsample?A-ACORRECTAANSWERA-5Aminutes
, TestAcylindersAforAstrengthAshouldAbeAmoldedAwithinA___AminutesAofAtakingAaAconcreteAsample.A-
ACORRECTAANSWERA-15
TheAconcreteAsampleAmustAbeAprotectedAfromA_____,A_____,AsourcesAofArapidA_______________,AandAfr
omA______________________.A-ACORRECTAANSWERA-Sun,AWind,AEvaporation,AContamination.
WhatAisAtheAminimumAconcreteAsampleAsizeAtoAbeAtakenAforAtesting?A-ACORRECTAANSWERA-
28ALitersA/A1Aft3A(OneACubicAFt)
WhenAsamplingAfromAaAstationaryAmixer,AhowAmanyAportionsAshouldAbeAtaken?A-ACORRECTAANSWERA-
TwoAorAmore
WhenAsamplingAfromAaAstationaryAmixer,AfromAwhichAportionAofAtheAbatchAshouldAtheAsamplesAbeAtaken?A
-ACORRECTAANSWERA-TheAmiddleAportion.
WhenAsamplingAfromAaAstationaryAmixer,AwhichAtwoAcollectionAmethodsAareAacceptableAforAobtainingAaAs
ample?A-ACORRECTAANSWERA-1)ADivertingAtheAentireAflow
2)APassingAaAreceptacleAentirelyAthroughAtheAdischargeAstream
WhenAsamplingAfromAaAPavingAMixer,AhowAmanyAsamplesAareArequired?A-ACORRECTAANSWERA-
5AsamplesAminimumA(combinedAintoAoneAcompositeAsample)
WhenAsamplingAfromAaAPavingAMixer,AhowAshouldAtheAsample/sAbeAtaken?A-ACORRECTAANSWERA-
OnceAdischargeAisAcompleteAintoAaApile.
WhatAshouldAbeAavoidedAwhenAtakingAsamplesAfromAaAPavingAMixer?A-ACORRECTAANSWERA-
ContaminationAwithAtheASub-GradeA(ground)
WhenAsamplingAfromAaARevolvingADrumAMixerAorAAgitatorAaAminimumAofAhowAmanyAportionsAshouldAbeAt
aken?A-ACORRECTAANSWERA-TwoAorAmoreA(combinedAintoAoneAcompositeAsample)