ACI CERTIFICATION EXAM QUESTIONS WITH CORRECT ANSWERS 2025

ACI CERTIFICATION EXAM QUESTIONS
WITH CORRECT ANSWERS 2025
2.AT/F:AWhenAtheAconcreteAcontainsAlargeAaggregate,AtheAtestingAtechnicianAshouldAwet-
sieveAtheAsampleAbeforeAmakingAunitAweightAtestsAforAuseAinAyieldAcomputations.A-ACORRECTAANSWERA-
False



4.AT/F:ASamplesAsmallerAthanA28LA(1Acu.ft.)AareAallowedAonAroutineAairAcontent,Atemperature,AandAslumpAt
ests.A-ACORRECTAANSWERA-True



7.AHowAdoAyouAregulateAtheArateAofAdischargeAofAtheAbatchAfromAtheArevolvingAtruckAdrumAmixerAorAagitat
or?A-ACORRECTAANSWERA-ByAtheArateAofArevolutionAofAtheAdrum



10.AWhileAtheAtechnicianAisAcheckingAtheAslumpAofAtheAconcrete,AthereAisAaAdecidedAfallingAawayAorAsheari
ngAoffAofAtheAconcreteAfromAoneAsideAofAtheAsample.AWhatAshouldAtheAtechnicianAdo?A-
ACORRECTAANSWERA-DisregardAtheAtestAandAretestAonAanotherAportionAofAtheAsample




11.ATheAmoldAisAfilledAinAthreeAequalAlayersAbyAvolume,AwhichAmakesAtheAfirstAthirdAatA_______,AandAtheAs
econdAthirdAatA________.A-ACORRECTAANSWERA-2A5/8,A6A1/8



15.AWhatAisAtheAdifferenceAallowedAbyAACIAwhenAcertifyingAanAindividualAtestAusingAaAplasticAslumpAconeAv
s.AaAmetalAslumpAcone?A-ACORRECTAANSWERA-0.5Ainches



16.AT/F:ATheAsidesAofAtheAslumpAmoldAshouldAbeAlightlyAtappedAtoAconsolidateAtheAconcreteAinAtheAmold.A-
ACORRECTAANSWERA-False




18.AT/F:AASTMACA1064AdefinesAtheAmaximumArecommendedAtemperatureAforAconcrete.A-
ACORRECTAANSWERA-False




19.ATheAtemperatureAtestAmethodAmustAbeAcompleteAwithAinA_________AafterAobtainingAtheAsample.A-
ACORRECTAANSWERA-5Aminutes

, 20.AEachAtemperature-
measuringAdeviceAshouldAbeAcalibratedA________,AorAwheneverAthereAisAaAquestionAofA_________.A-
ACORRECTAANSWERA-annually,Aaccuracy




23.AT/F:AAfterAstrikeAoffAofAtheAmeasureAusedAtoAdetermineAdensity,AaAsmallAquantityAofAconcreteAmayAbeA
addedAtoAcorrectAaAdeficiency?A-ACORRECTAANSWERA-False



26.AWhatAisAtheArequiredAshapeAatAtheAendAofAtheAtampingArod?A-ACORRECTAANSWERA-
roundedAtoAaAhemisphericalAtip



28.AHowAdoAyouAfindAtheAdensityAofAaAconcreteAbatch?A-ACORRECTAANSWERA-
(massAofAmeasureAwithAconcreteA-AmassAofAmeasure)A/AvolumeAofAmeasure



29.AHowAdoAyouAfindAtheAyieldAofAaAconcreteAbatch?A-ACORRECTAANSWERA-
(massAofAallAmaterialsAbatchedA/A(densityAofAconcreteA*A27))



33.AT/F:ATestAmethodAASTMAC231AisAintendedAforAuseAwithAallAconcretesAandAaggregatesAforAwhichAanAagg
regateAcorrectionAfactorAcanAbeAdeterminedA-ACORRECTAANSWERA-False



34.AT/F:ATheApetcocksAareAclosedAbeforeApumpingAanyAairAintoAtheAchamberAonAtheAtypeABAmeter.A-
ACORRECTAANSWERA-False




36.ATheAsampleAisAobtainedAinAaccordanceAtoAASTMACA___________.A-ACORRECTAANSWERA-172



37.AIfAtheAaggregateAcorrectionAfactorAforAaAgivenAsourceAofAfineAandAcoarseAaggregateAisAfoundAtoAbeA0.2
%AinAaApressureAairAmeter,AandAanAairAcontentAvalueAofA5.0%AisAreadAonAtheAgaugeAofAtheAsameAairAmeterAc
ontainingAconcreteAwithAtheAsameAaggregate,AwhatAisAtheAcorrectAairAcontent?A-ACORRECTAANSWERA-4.8%



39.AIfAtheAsampleAisAvibratedAtheAdurationAofAvibrationAshouldAlastA___________.A-ACORRECTAANSWERA-
UntilAtheAsurfaceAconcreteAisAsmooth



40.ATheAmaximumAsizeAaggregateAforAthisAtestAisA_________.A-ACORRECTAANSWERA-2''