ACI CONCRETE FIELD TESTING TECHNICIAN
GRADE 1 EXAMINATION TEST PAPER 2026
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
● 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 [0.5 C], 30 degrees
F to 120 F [0 C to 50 C]
● 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 of
False Answer: True
● A composite sample of concrete is required even if the only purpose
for obtaining the sample is to determine temperature. True of 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
[_____ C] Answer: 1 degree F [0.5 C]
● 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 of False? Answer: False
, ● The sample of concrete used for temperature determination must be
rodded 25 times. True or False? Answer: False
● 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 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
● Portions of a composite sample shall be thoroughly remixed bfore
beginning tests on the sample. True of 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
GRADE 1 EXAMINATION TEST PAPER 2026
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
● 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 [0.5 C], 30 degrees
F to 120 F [0 C to 50 C]
● 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 of
False Answer: True
● A composite sample of concrete is required even if the only purpose
for obtaining the sample is to determine temperature. True of 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
[_____ C] Answer: 1 degree F [0.5 C]
● 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 of False? Answer: False
, ● The sample of concrete used for temperature determination must be
rodded 25 times. True or False? Answer: False
● 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 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
● Portions of a composite sample shall be thoroughly remixed bfore
beginning tests on the sample. True of 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
