ACI Concrete Field Testing Technician- Grade I Questions And Answers 2024

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