ACI Concrete Field Testing Technician-
Grade I Questions And Answers
Theisensoriofitheitemperatureimeasuringideviceishallibeisubmergediaim
inimumiofi_____iin.i[_____mm]iintoitheifreshlyimixediconcrete.i-
iCorrectiAnswer-3iin.i[75imm]
Theitemperatureimeasuringideviceishallihaveiaicapacityiofimeasuringite
mperatureiofifreshlyimixediconcreteitoi+-i_____idegreesiFi[+-
i_____iC]ithroughoutiairangeiofi_____.i-iCorrectiAnswer-
1idegreeiFi[0.5iC],i30idegreesiFitoi120iFi[0iCitoi50iC]
Theitemperatureimeasuringideviceishallibeicalibratedi_____,ioriwhenev
erithereiisiaiquestioniofi_____.i-iCorrectiAnswer-Annually,iaccuracy
Theitemperatureioficoncreteimayibeimeasurediiniaiwheelbarrow.iTrueio
riFalse?i-iCorrectiAnswer-True
Theitemperatureioficoncreteimayibeimeasurediiniaiwalliform.iTrueiofiFal
sei-iCorrectiAnswer-True
Aicompositeisampleioficoncreteiisirequiredieveniifitheionlyipurposeiforio
btainingitheisampleiisitoidetermineitemperature.iTrueiofiFalse?i-
iCorrectiAnswer-False
,Whatimustibeidoneitoitheisampleicontaineriprioritoisamplingitheiconcre
te?i-iCorrectiAnswer-Dampeni(withiwater)
Whatimustibeidoneitoitheiconcreteisurroundingitheitemperatureimeasu
ringideviceiafteritheideviceiisisubmergediinitheifreshiconcrete.i-
iCorrectiAnswer-
Gentlyipressitheiconcreteiarounditheitemperatureimeasuringideviceiatit
heisurfaceiofitheiconcrete
Howilongimustitheitemperatureimeasuringideviceiremainiinitheifreshlyi
mixediconcrete?i-iCorrectiAnswer-
Atileasti2iminutesibutinotimoreithani5iminutes
Afteritheitemperatureiofitheiconcreteiisiread,iwhatiisirequired?i-
iCorrectiAnswer-Reportingiofitemperature
Theitemperatureioficoncreteiisireporteditoitheinearesti_____idegreesiFi[
_____iC]i-iCorrectiAnswer-1idegreeiFi[0.5iC]
AccordingitoiASTMiC1064,iwhatiisioneireasonitoitakeitheitemperatureiof
iconcrete?i-iCorrectiAnswer-
Verifyiconformanceitoiaispecifiedirequirementiforitemperatureioficoncr
ete
AimaximumitemperatureiofifreshlyimixediconcreteiisispecifiediiniASTMi
C1064.iTrueiofiFalse?i-iCorrectiAnswer-False
, Theisampleioficoncreteiusediforitemperatureideterminationimustibeiro
ddedi25itimes.iTrueioriFalse?i-iCorrectiAnswer-False
Samplingibyithisimethodiisirequirediwhenitestsiareitoibeimadeitoideter
minei_____iwithispecificationirequirements.i-iCorrectiAnswer-
Compliance
Thisimethodicoversisamplingifromifouritypesiofimixturesiwhichiarei____
_,i_____,i_____,iandi_____.i-iCorrectiAnswer-
Stationaryimixers,ipavingimixers,irevolvingidrumimixers,iandiopenitopi
mixers
Theimaximumiallowableitimeibetweeniobtainingitheifirstiandifinaliporti
onsiofiaicompositeisampleiisi_____iminutes.i-iCorrectiAnswer-15
Portionsiofiaicompositeisampleishallibeithoroughlyiremixedibforeibegin
ningitestsionitheisample.iTrueiofiFalse?i-iCorrectiAnswer-True
Theimaximumielapseditimeiallowedibetweeniobtainingitheifinaliportion
iofitheicompositeisampleiandibeginningitheitestsiforislump,itemperatur
e,iandiairicontentiisi_____iminutes.i-iCorrectiAnswer-5
Theimoldingiofistrengthitestispecimensishallibeginiwithini_____iminutes
iafterifabricatingitheicompositeisample.i-iCorrectiAnswer-15
Grade I Questions And Answers
Theisensoriofitheitemperatureimeasuringideviceishallibeisubmergediaim
inimumiofi_____iin.i[_____mm]iintoitheifreshlyimixediconcrete.i-
iCorrectiAnswer-3iin.i[75imm]
Theitemperatureimeasuringideviceishallihaveiaicapacityiofimeasuringite
mperatureiofifreshlyimixediconcreteitoi+-i_____idegreesiFi[+-
i_____iC]ithroughoutiairangeiofi_____.i-iCorrectiAnswer-
1idegreeiFi[0.5iC],i30idegreesiFitoi120iFi[0iCitoi50iC]
Theitemperatureimeasuringideviceishallibeicalibratedi_____,ioriwhenev
erithereiisiaiquestioniofi_____.i-iCorrectiAnswer-Annually,iaccuracy
Theitemperatureioficoncreteimayibeimeasurediiniaiwheelbarrow.iTrueio
riFalse?i-iCorrectiAnswer-True
Theitemperatureioficoncreteimayibeimeasurediiniaiwalliform.iTrueiofiFal
sei-iCorrectiAnswer-True
Aicompositeisampleioficoncreteiisirequiredieveniifitheionlyipurposeiforio
btainingitheisampleiisitoidetermineitemperature.iTrueiofiFalse?i-
iCorrectiAnswer-False
,Whatimustibeidoneitoitheisampleicontaineriprioritoisamplingitheiconcre
te?i-iCorrectiAnswer-Dampeni(withiwater)
Whatimustibeidoneitoitheiconcreteisurroundingitheitemperatureimeasu
ringideviceiafteritheideviceiisisubmergediinitheifreshiconcrete.i-
iCorrectiAnswer-
Gentlyipressitheiconcreteiarounditheitemperatureimeasuringideviceiatit
heisurfaceiofitheiconcrete
Howilongimustitheitemperatureimeasuringideviceiremainiinitheifreshlyi
mixediconcrete?i-iCorrectiAnswer-
Atileasti2iminutesibutinotimoreithani5iminutes
Afteritheitemperatureiofitheiconcreteiisiread,iwhatiisirequired?i-
iCorrectiAnswer-Reportingiofitemperature
Theitemperatureioficoncreteiisireporteditoitheinearesti_____idegreesiFi[
_____iC]i-iCorrectiAnswer-1idegreeiFi[0.5iC]
AccordingitoiASTMiC1064,iwhatiisioneireasonitoitakeitheitemperatureiof
iconcrete?i-iCorrectiAnswer-
Verifyiconformanceitoiaispecifiedirequirementiforitemperatureioficoncr
ete
AimaximumitemperatureiofifreshlyimixediconcreteiisispecifiediiniASTMi
C1064.iTrueiofiFalse?i-iCorrectiAnswer-False
, Theisampleioficoncreteiusediforitemperatureideterminationimustibeiro
ddedi25itimes.iTrueioriFalse?i-iCorrectiAnswer-False
Samplingibyithisimethodiisirequirediwhenitestsiareitoibeimadeitoideter
minei_____iwithispecificationirequirements.i-iCorrectiAnswer-
Compliance
Thisimethodicoversisamplingifromifouritypesiofimixturesiwhichiarei____
_,i_____,i_____,iandi_____.i-iCorrectiAnswer-
Stationaryimixers,ipavingimixers,irevolvingidrumimixers,iandiopenitopi
mixers
Theimaximumiallowableitimeibetweeniobtainingitheifirstiandifinaliporti
onsiofiaicompositeisampleiisi_____iminutes.i-iCorrectiAnswer-15
Portionsiofiaicompositeisampleishallibeithoroughlyiremixedibforeibegin
ningitestsionitheisample.iTrueiofiFalse?i-iCorrectiAnswer-True
Theimaximumielapseditimeiallowedibetweeniobtainingitheifinaliportion
iofitheicompositeisampleiandibeginningitheitestsiforislump,itemperatur
e,iandiairicontentiisi_____iminutes.i-iCorrectiAnswer-5
Theimoldingiofistrengthitestispecimensishallibeginiwithini_____iminutes
iafterifabricatingitheicompositeisample.i-iCorrectiAnswer-15
