ACI Certification Concrete Field Testing
Technician Grade 1 Sample Written Test
Exam 2024
The Method of determining air content of concrete containing lightweight aggregate is
the pressure method. True or False? - CORRECT ANSWER-False
When making a test cylinder from concrete being used in construction, the field
technician must also measure the slump of the concrete. True or False? - CORRECT
ANSWER-True
While the technician is checking the slump of the concrete, there is a decided falling
away or shearing off of concrete from one side of the sample. What should the
technician do? - CORRECT ANSWER-Disregard the test and retest on another portion
of the sample
Preparation of specimens for transport includes - CORRECT ANSWER-
Determining that at least 8 hours has elapsed since the final set
If the aggregate lcorrection lfactor lfor la lgiven lsource lof lfine land lcoarse laggregate lis
lfound lto lbe l.2% lin la lpressure lair lmeter, land lan lair lcontent lvalue lof l5.0% lis lread lon
lthe lgage lof lthe lsame lair lmeter lcontaining lconcrete lwith lthe lsame laggregate, lwhat lis
lthe lcorrect lair lcontent lin l%. l- lCORRECT lANSWER-4.8% l= l5.0 l- l0.2
Strength ltest lspecimens ltransported lfrom lthe lfield lto lthe ltesting llaboratory lmust
lbe l- lCORRECT lANSWER-Protected lfrom ljarring, lmoisture lloss, land lfreezing.
Test lfor lslump land lair lcontent lmust lbe lstarted lwithin l__ lafter lobtaining lthe lfinal
lportion lof lthe lcomposite lsample. l- lCORRECT lANSWER-5 lmins
The lminimum lsize lfor lsamples lto lbe lused lfor lstrength ltests lis l__. l-
lCORRECT lANSWER-1 lft^3 l= l28 lL
After lstrike loff lof lthe lmeasure lused lto ldetermine ldensity, la lsmall lquantity lof
lconcrete lmay lbe ladded lto lcorrect la ldeficiency. lTrue lor lFalse? l- lCORRECT
lANSWER-False
For lnormal lstrength lconcretes, lwhat ltemperature lrange lmust lbe lmaintained lfor
ltest lcylinders lduring linitial lcuring? l- lCORRECT lANSWER-60-80 ldeg lF
Technician Grade 1 Sample Written Test
Exam 2024
The Method of determining air content of concrete containing lightweight aggregate is
the pressure method. True or False? - CORRECT ANSWER-False
When making a test cylinder from concrete being used in construction, the field
technician must also measure the slump of the concrete. True or False? - CORRECT
ANSWER-True
While the technician is checking the slump of the concrete, there is a decided falling
away or shearing off of concrete from one side of the sample. What should the
technician do? - CORRECT ANSWER-Disregard the test and retest on another portion
of the sample
Preparation of specimens for transport includes - CORRECT ANSWER-
Determining that at least 8 hours has elapsed since the final set
If the aggregate lcorrection lfactor lfor la lgiven lsource lof lfine land lcoarse laggregate lis
lfound lto lbe l.2% lin la lpressure lair lmeter, land lan lair lcontent lvalue lof l5.0% lis lread lon
lthe lgage lof lthe lsame lair lmeter lcontaining lconcrete lwith lthe lsame laggregate, lwhat lis
lthe lcorrect lair lcontent lin l%. l- lCORRECT lANSWER-4.8% l= l5.0 l- l0.2
Strength ltest lspecimens ltransported lfrom lthe lfield lto lthe ltesting llaboratory lmust
lbe l- lCORRECT lANSWER-Protected lfrom ljarring, lmoisture lloss, land lfreezing.
Test lfor lslump land lair lcontent lmust lbe lstarted lwithin l__ lafter lobtaining lthe lfinal
lportion lof lthe lcomposite lsample. l- lCORRECT lANSWER-5 lmins
The lminimum lsize lfor lsamples lto lbe lused lfor lstrength ltests lis l__. l-
lCORRECT lANSWER-1 lft^3 l= l28 lL
After lstrike loff lof lthe lmeasure lused lto ldetermine ldensity, la lsmall lquantity lof
lconcrete lmay lbe ladded lto lcorrect la ldeficiency. lTrue lor lFalse? l- lCORRECT
lANSWER-False
For lnormal lstrength lconcretes, lwhat ltemperature lrange lmust lbe lmaintained lfor
ltest lcylinders lduring linitial lcuring? l- lCORRECT lANSWER-60-80 ldeg lF
