ACI CONCRETE STRENGTH TESTING
TECHNICIAN SAMPLE WRITTEN EXAM
TEST BANK FEATURING TESTED
QUESTIONS AND ACCURATE ANSWERS
⩥ 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.
TECHNICIAN SAMPLE WRITTEN EXAM
TEST BANK FEATURING TESTED
QUESTIONS AND ACCURATE ANSWERS
⩥ 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.
