1
ACI Concrete Field Testing Technician
- Grade 1 (Canada) Questions and
Verified Solutions. Latest 2026-2027
Rated A
(Ma + Mf +Mc +Mw) = - ANS12000kg
A measure with a capacity of at least ____L is required for concrete with 40
mm nominal maximum size aggregate. - ANS15L
A minimum sample size of 20L is required for all slump tests. True or
False? - ANSFalse; CSA A23.1-1C permits smaller samples if only slump
and air tested
A piece of reinforcing stell makes a good tamping rod. True or False? -
ANSFalse
According to the CSA standard, why is the temperature of concrete
generally taken?__ - ANSverify confomance to a specified requirement for
temperature of concrete
After completing the strike-off procedure, what must be done prior to
obtaining the gross mass of measure and sample?_____ - ANSClean all
excess concrete form exterior of bowl
1
, 2
After completion of the test, how could a technician assure him/herself that
the entire concrete sample in the bowl was subjected to the washing
action? - ANScheck for unwashed concrete.
After initial curing, compressive strength test specimens used as the basis
of acceptance shall be stored in a ____condition at 23C +/- 2C until the
moment of test. - ANSmoist
After moulding strength specimens in the field, it is the technician's
responsibily to assure that all test specimens are stored under vibration-
free conditions which maintin the temperature immediatly adjacent to the
specimens in the range of ___C to ____C - ANS20, +/- 5
After moulding test specimens, you should wait two hours before moving
them to the nearby location of initial storage? True or False? - ANSFalse;
move immediately
After rodding each layer, what should be done to the measure before
adding another layer of concrete?_____ - ANStap smartly with a mallet 10
or more times
After the final rodding, the sides of the slump cone should be tapped lightly
with the tamping rod. True or False? - ANSFalse
After the temperature of the concrete is read, what is then required? -
ANSRecord it
2
, 3
Air content (pressure method) measurement and slump must both be
completed within___minutes of transporting and remixing of the sample -
ANS10
Air content by the pressure method must be reported to what accuracy?
____ - ANS0.1%
all mass measurements shall be recorded to what accuracy? -
ANSrounded to the nearest 0.05kg
Between what two points of the mixer discharge must the concrete be
sampled? - ANSthe 10% and 90% points
Calibration should be perfomed over a range of ___C - ANS2 temperature
at least 15C apart
Cardboard moulds may be routinely used? True or False? - ANSFalse;
requres documenation and 35Mpa maximum
Complete the temperature measurment of freshly mixed concrete within
____minutes of obtaining the sample. - ANS5
Concrete temperature can be taken in concrete placed in a wall form. -
ANSTrue
3
ACI Concrete Field Testing Technician
- Grade 1 (Canada) Questions and
Verified Solutions. Latest 2026-2027
Rated A
(Ma + Mf +Mc +Mw) = - ANS12000kg
A measure with a capacity of at least ____L is required for concrete with 40
mm nominal maximum size aggregate. - ANS15L
A minimum sample size of 20L is required for all slump tests. True or
False? - ANSFalse; CSA A23.1-1C permits smaller samples if only slump
and air tested
A piece of reinforcing stell makes a good tamping rod. True or False? -
ANSFalse
According to the CSA standard, why is the temperature of concrete
generally taken?__ - ANSverify confomance to a specified requirement for
temperature of concrete
After completing the strike-off procedure, what must be done prior to
obtaining the gross mass of measure and sample?_____ - ANSClean all
excess concrete form exterior of bowl
1
, 2
After completion of the test, how could a technician assure him/herself that
the entire concrete sample in the bowl was subjected to the washing
action? - ANScheck for unwashed concrete.
After initial curing, compressive strength test specimens used as the basis
of acceptance shall be stored in a ____condition at 23C +/- 2C until the
moment of test. - ANSmoist
After moulding strength specimens in the field, it is the technician's
responsibily to assure that all test specimens are stored under vibration-
free conditions which maintin the temperature immediatly adjacent to the
specimens in the range of ___C to ____C - ANS20, +/- 5
After moulding test specimens, you should wait two hours before moving
them to the nearby location of initial storage? True or False? - ANSFalse;
move immediately
After rodding each layer, what should be done to the measure before
adding another layer of concrete?_____ - ANStap smartly with a mallet 10
or more times
After the final rodding, the sides of the slump cone should be tapped lightly
with the tamping rod. True or False? - ANSFalse
After the temperature of the concrete is read, what is then required? -
ANSRecord it
2
, 3
Air content (pressure method) measurement and slump must both be
completed within___minutes of transporting and remixing of the sample -
ANS10
Air content by the pressure method must be reported to what accuracy?
____ - ANS0.1%
all mass measurements shall be recorded to what accuracy? -
ANSrounded to the nearest 0.05kg
Between what two points of the mixer discharge must the concrete be
sampled? - ANSthe 10% and 90% points
Calibration should be perfomed over a range of ___C - ANS2 temperature
at least 15C apart
Cardboard moulds may be routinely used? True or False? - ANSFalse;
requres documenation and 35Mpa maximum
Complete the temperature measurment of freshly mixed concrete within
____minutes of obtaining the sample. - ANS5
Concrete temperature can be taken in concrete placed in a wall form. -
ANSTrue
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