ACI CONCRETE FIELD TESTING TECHNICIAN
GRADE I ACTUAL EXAM PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉ The sensor of the temperature measuring device shall be submerged a
minimum of _____ in. into the freshly mixed concrete. Answer: 3 in.
◉ Portions of a composite sample shall be thoroughly remixed bfore
beginning tests on the sample. True or False? Answer: True
◉ The temperature measuring device shall have a capacity of measuring
temperature of freshly mixed concrete to +- _____ degrees F [+- _____
C] throughout a range of _____. Answer: 1 degree F, 30 degrees F to 120
F
◉ 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
◉ A composite sample of concrete is required even if the only purpose
for obtaining the sample is to determine temperature. True or False?
Answer: False
,◉ 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: Gently press the concrete around the temperature measuring
device at the surface of the concrete
◉ How long must the temperature measuring device remain in the
freshly mixed concrete? Answer: At least 2 minutes but not more than 5
minutes
◉ After the temperature of the concrete is read, what is required?
Answer: Reporting of temperature
◉ The temperature of concrete is reported to the nearest _____ degrees
F. Answer: 1 degree F
◉ According to ASTM C1064, what is one reason to take the
temperature of concrete? Answer: Verify conformance to a specified
requirement for temperature of concrete
◉ A maximum temperature of freshly mixed concrete is specified in
ASTM C1064. True or False? Answer: False
, ◉ This method covers sampling from four types of mixtures 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
◉ 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 sources of _____ and
_____. Answer: contamination and rapid evaporation
◉ The minimum size sample for making strength test specimens is
_____. Answer: 1ft^3
◉ When 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. Answer: 2
GRADE I ACTUAL EXAM PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉ The sensor of the temperature measuring device shall be submerged a
minimum of _____ in. into the freshly mixed concrete. Answer: 3 in.
◉ Portions of a composite sample shall be thoroughly remixed bfore
beginning tests on the sample. True or False? Answer: True
◉ The temperature measuring device shall have a capacity of measuring
temperature of freshly mixed concrete to +- _____ degrees F [+- _____
C] throughout a range of _____. Answer: 1 degree F, 30 degrees F to 120
F
◉ 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
◉ A composite sample of concrete is required even if the only purpose
for obtaining the sample is to determine temperature. True or False?
Answer: False
,◉ 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: Gently press the concrete around the temperature measuring
device at the surface of the concrete
◉ How long must the temperature measuring device remain in the
freshly mixed concrete? Answer: At least 2 minutes but not more than 5
minutes
◉ After the temperature of the concrete is read, what is required?
Answer: Reporting of temperature
◉ The temperature of concrete is reported to the nearest _____ degrees
F. Answer: 1 degree F
◉ According to ASTM C1064, what is one reason to take the
temperature of concrete? Answer: Verify conformance to a specified
requirement for temperature of concrete
◉ A maximum temperature of freshly mixed concrete is specified in
ASTM C1064. True or False? Answer: False
, ◉ This method covers sampling from four types of mixtures 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
◉ 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 sources of _____ and
_____. Answer: contamination and rapid evaporation
◉ The minimum size sample for making strength test specimens is
_____. Answer: 1ft^3
◉ When 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. Answer: 2
