ACI CERTIFICATION TESTS EXAM SCRIPT 2026
COMPREHENSIVE QUESTIONS AND
SOLUTIONS GRADED A+
◉ The sensor of the temperature measuring device shall be
submerged a minimum of ______ inches into the freshly mixed
concrete. Answer: 3"
◉ The temperature measuring device shall have a capacity of
measuring temperature of freshly mixed concrete to ± ______ °F
throughout a range of ____________. Answer: 1 degree, 30 degrees to
120 degrees
◉ The temperature measuring device shall be calibrated ______ , or
whenever there is a question of ______ . Answer: Annually, accuracy
◉ The temperature of concrete may be measured in a wheelbarrow.
True or False? Answer: True
◉ The temperature of concrete may be measured in a wall form.
True or False? Answer: True
,◉ What must be done to the sample container prior to sampling the
concrete? Answer: Dampen with water
◉ What must be done to the concrete surrounding the temperature
measuring device after the device is submerged in the fresh
concrete? Answer: Close off air voids by gently pressing the concrete
around the device
◉ How long must the temperature measuring device remain in the
freshly mixed concrete? Answer: minimum of two minutes,
maximum of five minutes
◉ The temperature of the concrete is reported to the nearest ______
°F Answer: 1 degree
◉ A maximum temperature of freshly mixed concrete is specified in
ASTM C1064. True or False? Answer: False
◉ ASTM C172 Answer: Standard Practice for Sampling Freshly
Mixed Concrete
◉ Sampling by this method is required when tests are to be made to
determine _____ with specification requirements. Answer:
Compliance
, ◉ This method covers sampling from four types of mixers, which are
_____ , _____ , _____ , and _____ . Answer: Stationary mixers, paving
mixers, revolving drum mixers and open top mixers
◉ The maximum allowable time between obtaining the first and
final portions of a composite sample is _____ minutes. Answer: 15
◉ Portions of a composite sample shall be thoroughly remixed
before beginning tests on the sample. True or False? Answer: True
◉ The maximum elapsed time allowed between obtaining the final
portion of the composite sample and beginning the tests for slump,
temperature, and air content is _____ minutes. Answer: 5
◉ The molding of strength test specimens shall begin within _____
minutes after fabricating the composite
sample. Answer: 15
◉ The concrete sample must be protected from contamination and
_____. Answer: Rapid evaporation
◉ The minimum size sample for making strength test specimens is
_____. Answer: 1 cubic foot
COMPREHENSIVE QUESTIONS AND
SOLUTIONS GRADED A+
◉ The sensor of the temperature measuring device shall be
submerged a minimum of ______ inches into the freshly mixed
concrete. Answer: 3"
◉ The temperature measuring device shall have a capacity of
measuring temperature of freshly mixed concrete to ± ______ °F
throughout a range of ____________. Answer: 1 degree, 30 degrees to
120 degrees
◉ The temperature measuring device shall be calibrated ______ , or
whenever there is a question of ______ . Answer: Annually, accuracy
◉ The temperature of concrete may be measured in a wheelbarrow.
True or False? Answer: True
◉ The temperature of concrete may be measured in a wall form.
True or False? Answer: True
,◉ What must be done to the sample container prior to sampling the
concrete? Answer: Dampen with water
◉ What must be done to the concrete surrounding the temperature
measuring device after the device is submerged in the fresh
concrete? Answer: Close off air voids by gently pressing the concrete
around the device
◉ How long must the temperature measuring device remain in the
freshly mixed concrete? Answer: minimum of two minutes,
maximum of five minutes
◉ The temperature of the concrete is reported to the nearest ______
°F Answer: 1 degree
◉ A maximum temperature of freshly mixed concrete is specified in
ASTM C1064. True or False? Answer: False
◉ ASTM C172 Answer: Standard Practice for Sampling Freshly
Mixed Concrete
◉ Sampling by this method is required when tests are to be made to
determine _____ with specification requirements. Answer:
Compliance
, ◉ This method covers sampling from four types of mixers, which are
_____ , _____ , _____ , and _____ . Answer: Stationary mixers, paving
mixers, revolving drum mixers and open top mixers
◉ The maximum allowable time between obtaining the first and
final portions of a composite sample is _____ minutes. Answer: 15
◉ Portions of a composite sample shall be thoroughly remixed
before beginning tests on the sample. True or False? Answer: True
◉ The maximum elapsed time allowed between obtaining the final
portion of the composite sample and beginning the tests for slump,
temperature, and air content is _____ minutes. Answer: 5
◉ The molding of strength test specimens shall begin within _____
minutes after fabricating the composite
sample. Answer: 15
◉ The concrete sample must be protected from contamination and
_____. Answer: Rapid evaporation
◉ The minimum size sample for making strength test specimens is
_____. Answer: 1 cubic foot
