ACI CERTIFICATION CONCRETE FIELD-TESTING TECHNICIAN GRADE 1
EXAM|QUESTIONS AND VERIFIED ANSWERS|NEW UPDATE 2026/2027|GRADED
A+
Sampling Fresh Concrete: Collecting a representative sample of concrete to be tested is as important as
executing the test methods to obtain _______________________________.
CORRECT|ANSWER
Accurate results (Reference 1.2)
Sampling Fresh Concrete: This practice covers sampling from four types of equipment , which are
________________________________, ________________________,
________________________________________, and _____________________ ____________.
CORRECT|ANSWER
Stationary mixers, paving mixers, revolving truck mixers, continuous mixers (Reference 1.5)
Sampling Fresh Concrete: The elapsed time between obtaining the first and final portions of the
composite sample shall not exceed ____________________.
CORRECT|ANSWER
15 minutes (Reference 1.5)
Sampling Fresh Concrete: Portions of a composite sample shall be thoroughly remixed before beginning
tests on the sample? True or False?
CORRECT|ANSWER
True (Reference 1.5.5)
Sampling Fresh Concrete: Start tests for slump, temperature, and air content within ________________
after obtaining the final portion of the composite sample.
,CORRECT|ANSWER
5 minutes (Reference 1.5.5 & Figure 1.6)
Sampling Fresh Concrete: Start molding specimens for strength tests within ___________________ after
fabricating the composite sample.
CORRECT|ANSWER
15 minutes (Reference 1.5.5 & Figure 1.6)
Sampling Fresh Concrete: The concrete sample must be protected from contamination and
______________________.
CORRECT|ANSWER
Evaporation (Reference 1.2)
Sampling Fresh Concrete: The minimum sample for making strength test specimens is
_____________________.
CORRECT|ANSWER
1 FT^3 (28 L) (Reference 1.5.1)
Sampling Fresh Concrete: Where sampling from a stationary mixer, the batch must be sampled at
______ or more regularly spaced intervals during discharge of the middle portion of the batch.
CORRECT|ANSWER
Two (Reference 1.5.2)
Sampling Fresh Concrete: When sampling from a paving mixer, obtain samples from a least ________
difference portions of the pile and combine them into one composite sample for test purposes.
CORRECT|ANSWER
, Five (Reference 1.5.3)
Sampling Fresh Concrete: When sampling from revolving truck mixer, sample the concrete by collecting
________ or more portions taken at regularly spaced intervals during discharge of the middle portion of
the batch.
CORRECT|ANSWER
Two (Reference 1.5.2)
Sampling Fresh Concrete: Concrete samples from a truck mixer must be obtained before any water or
admixtures are added to the mixer at the job site. True or False?
CORRECT|ANSWER
False (Reference 1.5.2)
Sampling Fresh Concrete: When the concrete contains aggregate larger than that permitted for a
particular test method, the sample of concrete must be ______________________ before making the
test.
CORRECT|ANSWER
Wet screened (Reference 1.5.1)
Temperature of Fresh Concrete: The stem of the thermometer is submerged a minimum of
_______________________.
CORRECT|ANSWER
3 inches (75 mm) (Reference 2.4)
Temperature of Fresh Concrete: The thermometer shall be capable of accurately measuring the
temperature of freshly mixed concrete to _____________________ throughout a range of
_________________________.
EXAM|QUESTIONS AND VERIFIED ANSWERS|NEW UPDATE 2026/2027|GRADED
A+
Sampling Fresh Concrete: Collecting a representative sample of concrete to be tested is as important as
executing the test methods to obtain _______________________________.
CORRECT|ANSWER
Accurate results (Reference 1.2)
Sampling Fresh Concrete: This practice covers sampling from four types of equipment , which are
________________________________, ________________________,
________________________________________, and _____________________ ____________.
CORRECT|ANSWER
Stationary mixers, paving mixers, revolving truck mixers, continuous mixers (Reference 1.5)
Sampling Fresh Concrete: The elapsed time between obtaining the first and final portions of the
composite sample shall not exceed ____________________.
CORRECT|ANSWER
15 minutes (Reference 1.5)
Sampling Fresh Concrete: Portions of a composite sample shall be thoroughly remixed before beginning
tests on the sample? True or False?
CORRECT|ANSWER
True (Reference 1.5.5)
Sampling Fresh Concrete: Start tests for slump, temperature, and air content within ________________
after obtaining the final portion of the composite sample.
,CORRECT|ANSWER
5 minutes (Reference 1.5.5 & Figure 1.6)
Sampling Fresh Concrete: Start molding specimens for strength tests within ___________________ after
fabricating the composite sample.
CORRECT|ANSWER
15 minutes (Reference 1.5.5 & Figure 1.6)
Sampling Fresh Concrete: The concrete sample must be protected from contamination and
______________________.
CORRECT|ANSWER
Evaporation (Reference 1.2)
Sampling Fresh Concrete: The minimum sample for making strength test specimens is
_____________________.
CORRECT|ANSWER
1 FT^3 (28 L) (Reference 1.5.1)
Sampling Fresh Concrete: Where sampling from a stationary mixer, the batch must be sampled at
______ or more regularly spaced intervals during discharge of the middle portion of the batch.
CORRECT|ANSWER
Two (Reference 1.5.2)
Sampling Fresh Concrete: When sampling from a paving mixer, obtain samples from a least ________
difference portions of the pile and combine them into one composite sample for test purposes.
CORRECT|ANSWER
, Five (Reference 1.5.3)
Sampling Fresh Concrete: When sampling from revolving truck mixer, sample the concrete by collecting
________ or more portions taken at regularly spaced intervals during discharge of the middle portion of
the batch.
CORRECT|ANSWER
Two (Reference 1.5.2)
Sampling Fresh Concrete: Concrete samples from a truck mixer must be obtained before any water or
admixtures are added to the mixer at the job site. True or False?
CORRECT|ANSWER
False (Reference 1.5.2)
Sampling Fresh Concrete: When the concrete contains aggregate larger than that permitted for a
particular test method, the sample of concrete must be ______________________ before making the
test.
CORRECT|ANSWER
Wet screened (Reference 1.5.1)
Temperature of Fresh Concrete: The stem of the thermometer is submerged a minimum of
_______________________.
CORRECT|ANSWER
3 inches (75 mm) (Reference 2.4)
Temperature of Fresh Concrete: The thermometer shall be capable of accurately measuring the
temperature of freshly mixed concrete to _____________________ throughout a range of
_________________________.
