ACI CONCRETE TEST 4 2026 CERTIFICATION
EVALUATION EXAMS COMPLETE QUESTIONS
AND ANSWERS
◉ 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
EVALUATION EXAMS COMPLETE QUESTIONS
AND ANSWERS
◉ 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
