ACI Concrete Field Testing Technician
Grade I Practice Exam Questions and
Answers 100% Verified
The end of the temperature sensing portion of the temperature measuring device is
submerged a minimum of __mm [__in.] into the freshly mixed concrete. - CORRECT
ANSWER-77mm /3in.
The temperature measuring device shall be capable of accurately measuring the
temperature of freshly mixed concrete to +- __C [+__F] throught a range of __. -
CORRECT yANSWER-0.5 yC y/ y+-1F y/ y0-50 yDecrees yC
The ytemp. ymeasuring ydevice yshall ybe yverified y__, yor ywhenever ythere yis ya
yquestion yof y__. y- yCORRECT yANSWER-Annually y/ yaccuracy
The ytemp yof yconcrete ymay ybe ymeasured yin ya ywheelbarrow? yT/F y- yCORRECT
yANSWER-True
The ytemp. yof yconcrete ymay ybe ymeasured yin ya ywall yform. yT/F y- yCORRECT
yANSWER-True
A ycomposite ysample yof yconcrete yis yrequired yeven yif ythe yonly ypurpose yfor
yobtaining ythe ysample yis yto ydetermine ytemp. yT/F y- yCORRECT yANSWER-False
What ymust ybe ydone yto ythe ysample ycontainer yprior yto ysampling ythe yconcrete y-
yCORRECT yANSWER-It ymust ybe ydampened ywith ywater
What ymust ybe ydone yto ythe yconcrete ysurrounding ythe ytemp ymeasuring ydevice
yafter ythe ydevice yis ysubmerged yin ythe yfresh yconcrete? y- yCORRECT yANSWER-
Gently ypress ythe yconcrete yat ythe ysurface yaround ythe ymeasuring ydevice.
How ylong ymust ythe ytemperature ymeasuring ydevice yremain yin ythe yfreshly ymixed
yconcrete? y- yCORRECT yANSWER-At yleast y2 ymin., yno ylonger ythan y5 ymin.
After ythe ytemperature yof ythe yconcrete yis yread, ywhat yis ythen yrequired? y-
yCORRECT yANSWER-Reporting yof ytemp.
The ytemp. yof yconcrete yis yreported yto ythe ynearest y__. y- yCORRECT yANSWER-1
ydegree yF
According yto yASTM yC1064, ywhat yis yone yreason yto ytake ythe ytemperature yof
yconcrete? y- yCORRECT yANSWER-to yverify yconformance yto ya yspecific
yrequirement.
, A ymax. ytemp. yof yfreshly ymixed yconcrete yis yspecified yin yASTM yC1064. yT/F y-
yCORRECT yANSWER-False
The ysample yof yconcrete yused yfor ytemperature ydetermination ymust ybe yrodded y25
ytimes. y- yCORRECT yANSWER-False
Sampling yby ythis ymethod ycovers yprocedures yor yobtaining yrepresentative
ysamples, yon ywhich ytest yare yto ybe yperformed yto ydetermined y__ ywith yquality
yrequirements yof ythe yspecifications yunder ywhich ythe yconcrete yis yfurnished. y-
yCORRECT yANSWER-Compliance
This ymethod ycovers ysampling yfrom yfour ytypes yof ymixers, ywhich yare y__, y__, y__,
yand y__. y- yCORRECT yANSWER-Stationary ymixers y/ yPaving ymixers y/ yrevolving
ydrum ymixers y/ yopen ytop ymixers
The yelapsed ytime ybetween yobtaining ythe yfirst yand yfinal yportions yof ya ycomposite
ysample yshall ynot yexceed y__ ymin. y- yCORRECT yANSWER-15 ymin.
Portions yof ya ycomposite ysample yshall ybe ythoroughly ymixed ybefore ybeginning ytest
yon ythe ysample. yT/F y- yCORRECT yANSWER-True
Start ytests yfor yslump, ytemp, yand yair ycontent ywithin y__ ymin. yafter yobtaining ythe
yfinal yportion yof ythe ycomposite ysample. y- yCORRECT yANSWER-5 ymin.
start ymolding yspecimens yfr ystrength ytests ywithin y__ yafter yfabrication ythe
ycomposite ysample. y- yCORRECT yANSWER-15 ymin.
The yconcrete ysample ymust ybe yprotected yfrom ycontamination yand y__. y-
yCORRECT yANSWER-Rapid yevaporation
The ymaximum ysize ysample yfor ymaking ystrength ytest yspecimens yis y__ yft
ycubed y- yCORRECT yANSWER-1 yfoot ycubed.
When ysampling yfrom ya ySTATIONARY ymixer, ythe ybatch ymust ybe ysampled yat y__
yor ymore yregularly yspaced yintervals yduring ydischarge yof ythe ymiddle yportion yof ythe
ybatch. y- yCORRECT yANSWER-2
When ysampling yfrom ya yPAVING ymixer, yobtain ysamples yfrom yat yleast y__ ydifferent
yportions yof ythe ypile yand ycombine ythem yinto yone ycomposite ysample yfor ytest
ypurposes y- yCORRECT yANSWER-5
When ysampling yfrom ya yREVOLVING yDRUM yTRUCK ymixer, ysample ythe
yconcrete yby ycollecting y__ yor ymore yportions ytaken yat yregularly yspaced yintervals
yduring ydischarge yof ythe ymiddle yportion yof ythe ybatch. y- yCORRECT yANSWER-2
Grade I Practice Exam Questions and
Answers 100% Verified
The end of the temperature sensing portion of the temperature measuring device is
submerged a minimum of __mm [__in.] into the freshly mixed concrete. - CORRECT
ANSWER-77mm /3in.
The temperature measuring device shall be capable of accurately measuring the
temperature of freshly mixed concrete to +- __C [+__F] throught a range of __. -
CORRECT yANSWER-0.5 yC y/ y+-1F y/ y0-50 yDecrees yC
The ytemp. ymeasuring ydevice yshall ybe yverified y__, yor ywhenever ythere yis ya
yquestion yof y__. y- yCORRECT yANSWER-Annually y/ yaccuracy
The ytemp yof yconcrete ymay ybe ymeasured yin ya ywheelbarrow? yT/F y- yCORRECT
yANSWER-True
The ytemp. yof yconcrete ymay ybe ymeasured yin ya ywall yform. yT/F y- yCORRECT
yANSWER-True
A ycomposite ysample yof yconcrete yis yrequired yeven yif ythe yonly ypurpose yfor
yobtaining ythe ysample yis yto ydetermine ytemp. yT/F y- yCORRECT yANSWER-False
What ymust ybe ydone yto ythe ysample ycontainer yprior yto ysampling ythe yconcrete y-
yCORRECT yANSWER-It ymust ybe ydampened ywith ywater
What ymust ybe ydone yto ythe yconcrete ysurrounding ythe ytemp ymeasuring ydevice
yafter ythe ydevice yis ysubmerged yin ythe yfresh yconcrete? y- yCORRECT yANSWER-
Gently ypress ythe yconcrete yat ythe ysurface yaround ythe ymeasuring ydevice.
How ylong ymust ythe ytemperature ymeasuring ydevice yremain yin ythe yfreshly ymixed
yconcrete? y- yCORRECT yANSWER-At yleast y2 ymin., yno ylonger ythan y5 ymin.
After ythe ytemperature yof ythe yconcrete yis yread, ywhat yis ythen yrequired? y-
yCORRECT yANSWER-Reporting yof ytemp.
The ytemp. yof yconcrete yis yreported yto ythe ynearest y__. y- yCORRECT yANSWER-1
ydegree yF
According yto yASTM yC1064, ywhat yis yone yreason yto ytake ythe ytemperature yof
yconcrete? y- yCORRECT yANSWER-to yverify yconformance yto ya yspecific
yrequirement.
, A ymax. ytemp. yof yfreshly ymixed yconcrete yis yspecified yin yASTM yC1064. yT/F y-
yCORRECT yANSWER-False
The ysample yof yconcrete yused yfor ytemperature ydetermination ymust ybe yrodded y25
ytimes. y- yCORRECT yANSWER-False
Sampling yby ythis ymethod ycovers yprocedures yor yobtaining yrepresentative
ysamples, yon ywhich ytest yare yto ybe yperformed yto ydetermined y__ ywith yquality
yrequirements yof ythe yspecifications yunder ywhich ythe yconcrete yis yfurnished. y-
yCORRECT yANSWER-Compliance
This ymethod ycovers ysampling yfrom yfour ytypes yof ymixers, ywhich yare y__, y__, y__,
yand y__. y- yCORRECT yANSWER-Stationary ymixers y/ yPaving ymixers y/ yrevolving
ydrum ymixers y/ yopen ytop ymixers
The yelapsed ytime ybetween yobtaining ythe yfirst yand yfinal yportions yof ya ycomposite
ysample yshall ynot yexceed y__ ymin. y- yCORRECT yANSWER-15 ymin.
Portions yof ya ycomposite ysample yshall ybe ythoroughly ymixed ybefore ybeginning ytest
yon ythe ysample. yT/F y- yCORRECT yANSWER-True
Start ytests yfor yslump, ytemp, yand yair ycontent ywithin y__ ymin. yafter yobtaining ythe
yfinal yportion yof ythe ycomposite ysample. y- yCORRECT yANSWER-5 ymin.
start ymolding yspecimens yfr ystrength ytests ywithin y__ yafter yfabrication ythe
ycomposite ysample. y- yCORRECT yANSWER-15 ymin.
The yconcrete ysample ymust ybe yprotected yfrom ycontamination yand y__. y-
yCORRECT yANSWER-Rapid yevaporation
The ymaximum ysize ysample yfor ymaking ystrength ytest yspecimens yis y__ yft
ycubed y- yCORRECT yANSWER-1 yfoot ycubed.
When ysampling yfrom ya ySTATIONARY ymixer, ythe ybatch ymust ybe ysampled yat y__
yor ymore yregularly yspaced yintervals yduring ydischarge yof ythe ymiddle yportion yof ythe
ybatch. y- yCORRECT yANSWER-2
When ysampling yfrom ya yPAVING ymixer, yobtain ysamples yfrom yat yleast y__ ydifferent
yportions yof ythe ypile yand ycombine ythem yinto yone ycomposite ysample yfor ytest
ypurposes y- yCORRECT yANSWER-5
When ysampling yfrom ya yREVOLVING yDRUM yTRUCK ymixer, ysample ythe
yconcrete yby ycollecting y__ yor ymore yportions ytaken yat yregularly yspaced yintervals
yduring ydischarge yof ythe ymiddle yportion yof ythe ybatch. y- yCORRECT yANSWER-2
