CONCRETE BATCH PLANT OPERATOR EXAM (FDOT)
QUESTIONS WITH CORRECT ANSWERS 2025
StockpilesEofEaggregateEshallEbeEmaintainedEinEaEwell-drainedEconditionEinEorderEto:E-
ECORRECTEANSWERE-MinimizeEFreeEWaterEContent
CoarseEaggregateEstockpilesEmustEbeEsprinkledEforEatElestEhowEmanyEhoursEpriorEtoEbatchEforEFDOT
?E-ECORRECTEANSWERE-24
FreeEmoistureEofEtheEaggregateEmeans:E-ECORRECTEANSWERE-
MoisterEonEtheEsurfaceEofEanEaggregateEthatEisEaboveEandEbeyondEtheEabsorbedEmoisterEinEtheEagg
regate.
IfEtheEmoisterEtestEisEdoneEotherEthanEbyEtheEcook-
outEmethod,EhowEoftenEshallEtheEotherEmethodsEbeEverified?E-ECORRECTEANSWERE-EachEweek
ForEdrillEshaftEconcrete,EtheEquantityEofEcementEreplacedEwithEflyEashEshallEbe:E-
ECORRECTEANSWERE-33EthruE37%
InEconcrete,EwhichEmaterialEhasEaEspecificEgravityEofEone?E-ECORRECTEANSWERE-Water
WhatEisEtheEairEcontentErangeEforEallEclassesEofEstructuralEconcreteEexceptEClassEIVEShaft?E-
ECORRECTEANSWERE-1.00EthruE6.00%
WhenEcanEunmeteredEwaterEbeEaddedEtoEtheEconcrete?E-ECORRECTEANSWERE-NotEatEall.
DoEnotEallowEtheEtotalEnumberEofErevolutionEatEmixingEspeedEtoEexceed:E-ECORRECTEANSWERE-
160ERevolutions
, AfterEallEmaterialsEhaveEbeenEchargedEintoEtheEtransitEmixerEdrum,EtheEconcreteEmustEbeEmixedEatE
howEmanyErevolutionsEatEtheEplantEbeforeEleavingEforEtheEproject?E-ECORRECTEANSWERE-70EtoE100
WhenEtheEwaterEmetersE/EscalesEareEcalibrated,EpriorEtoEproduction,EatEwhatEfrequencyEshouldEthe
yEbeEcheckedEthereEafter?E-ECORRECTEANSWERE-3Emoths
ToEwhatEaccuracyEshouldEtheEscalesEforEweighingEcementE,Epozzolan,EslagEandEaggregatesEatEtheEpl
antEbeEmaintainedE-ECORRECTEANSWERE-0.5%EofEmaximumEloadEnormallyEhandled
ForEconcreteEcontainingEaEwater-
reducingEretardingEadmixture,EinEanEagitatorEtruck,EtheEmaximumEtimeEforEdepositingEtheEconcret
eEshallEnotEexceed:E-ECORRECTEANSWERE-90Eminutes
IfEaEloadEofEconcreteEhasEbeenErejectedEdueEtoEexcessiveEslump,EtheEconcreteEmayEremainEinEtheEtr
ansportingEvehicleEtoEreduceEtheEslump.E-ECORRECTEANSWERE-IsEnotEallowed.
WhoEplacesEtheEordersEforEconcreteEwithEtheEproducer?E-ECORRECTEANSWERE-TheEcontractor
TheEminimumEnormalEsamplingEfrequencyEforEtheEchlorideEcontentEofEstructuralEconcreteEis:E-
ECORRECTEANSWERE-
1EperEdesignEmixEinEuseEfromEtheEfirstEdayEofEproductionEandEeveryE30EcalendarEdaysEorElessEtherea
fter.
InEwhatEmoisterEconditionEareEtheEaggregatesEonEtheEapprovedEconcreteEmixEdesigns?E-
ECORRECTEANSWERE-SSDEcondition
TheEspecificEgravityEofEanEaggregateEisEtheEratioEofEitsEunitEweightEtoEtheEweightEofEanEequalEabsolu
teEvolumeEof:E-ECORRECTEANSWERE-Water
QUESTIONS WITH CORRECT ANSWERS 2025
StockpilesEofEaggregateEshallEbeEmaintainedEinEaEwell-drainedEconditionEinEorderEto:E-
ECORRECTEANSWERE-MinimizeEFreeEWaterEContent
CoarseEaggregateEstockpilesEmustEbeEsprinkledEforEatElestEhowEmanyEhoursEpriorEtoEbatchEforEFDOT
?E-ECORRECTEANSWERE-24
FreeEmoistureEofEtheEaggregateEmeans:E-ECORRECTEANSWERE-
MoisterEonEtheEsurfaceEofEanEaggregateEthatEisEaboveEandEbeyondEtheEabsorbedEmoisterEinEtheEagg
regate.
IfEtheEmoisterEtestEisEdoneEotherEthanEbyEtheEcook-
outEmethod,EhowEoftenEshallEtheEotherEmethodsEbeEverified?E-ECORRECTEANSWERE-EachEweek
ForEdrillEshaftEconcrete,EtheEquantityEofEcementEreplacedEwithEflyEashEshallEbe:E-
ECORRECTEANSWERE-33EthruE37%
InEconcrete,EwhichEmaterialEhasEaEspecificEgravityEofEone?E-ECORRECTEANSWERE-Water
WhatEisEtheEairEcontentErangeEforEallEclassesEofEstructuralEconcreteEexceptEClassEIVEShaft?E-
ECORRECTEANSWERE-1.00EthruE6.00%
WhenEcanEunmeteredEwaterEbeEaddedEtoEtheEconcrete?E-ECORRECTEANSWERE-NotEatEall.
DoEnotEallowEtheEtotalEnumberEofErevolutionEatEmixingEspeedEtoEexceed:E-ECORRECTEANSWERE-
160ERevolutions
, AfterEallEmaterialsEhaveEbeenEchargedEintoEtheEtransitEmixerEdrum,EtheEconcreteEmustEbeEmixedEatE
howEmanyErevolutionsEatEtheEplantEbeforeEleavingEforEtheEproject?E-ECORRECTEANSWERE-70EtoE100
WhenEtheEwaterEmetersE/EscalesEareEcalibrated,EpriorEtoEproduction,EatEwhatEfrequencyEshouldEthe
yEbeEcheckedEthereEafter?E-ECORRECTEANSWERE-3Emoths
ToEwhatEaccuracyEshouldEtheEscalesEforEweighingEcementE,Epozzolan,EslagEandEaggregatesEatEtheEpl
antEbeEmaintainedE-ECORRECTEANSWERE-0.5%EofEmaximumEloadEnormallyEhandled
ForEconcreteEcontainingEaEwater-
reducingEretardingEadmixture,EinEanEagitatorEtruck,EtheEmaximumEtimeEforEdepositingEtheEconcret
eEshallEnotEexceed:E-ECORRECTEANSWERE-90Eminutes
IfEaEloadEofEconcreteEhasEbeenErejectedEdueEtoEexcessiveEslump,EtheEconcreteEmayEremainEinEtheEtr
ansportingEvehicleEtoEreduceEtheEslump.E-ECORRECTEANSWERE-IsEnotEallowed.
WhoEplacesEtheEordersEforEconcreteEwithEtheEproducer?E-ECORRECTEANSWERE-TheEcontractor
TheEminimumEnormalEsamplingEfrequencyEforEtheEchlorideEcontentEofEstructuralEconcreteEis:E-
ECORRECTEANSWERE-
1EperEdesignEmixEinEuseEfromEtheEfirstEdayEofEproductionEandEeveryE30EcalendarEdaysEorElessEtherea
fter.
InEwhatEmoisterEconditionEareEtheEaggregatesEonEtheEapprovedEconcreteEmixEdesigns?E-
ECORRECTEANSWERE-SSDEcondition
TheEspecificEgravityEofEanEaggregateEisEtheEratioEofEitsEunitEweightEtoEtheEweightEofEanEequalEabsolu
teEvolumeEof:E-ECORRECTEANSWERE-Water