ACI Concrete Field Testing
Technician- Grade I Exam
Questions And Correct Answers
The sensor of the temperature measuring device shall be submerged a minimum
of in. [____ mm] into the freshly mixed concrete. - CORRECT-ANSWER-3
in. [75 mm]
The temperature measuring device shall have a capacity of measuring
temperature of freshly mixed concrete to +- degrees F [+- C]
throughout a range of-----------CORRECT-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-----------CORRECT-ANSWER-Annually, accuracy
,The temperature of concrete may be measured in a wheelbarrow. True or False? -
CORRECT-ANSWER-True
The temperature of concrete may be measured in a wall form. True of False -
CORRECT-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? - CORRECT-ANSWER-False
What must be done to the sample container prior to sampling the concrete? -
CORRECT-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. - CORRECT-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? - CORRECT-ANSWER-At least 2 minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required? - CORRECT-
ANSWER-Reporting of temperature
The temperature of concrete is reported to the nearest degrees F [ C]
- CORRECT-ANSWER-1 degree F [0.5 C]
According to ASTM C1064, what is one reason to take the temperature of concrete?
- CORRECT-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? - CORRECT-ANSWER-False
When sampling from a revolving drum truck mixer, concrete must be sampled at
a minimum of regularly spaced intervals during discharge of the middle
portion of this batch. - CORRECT-ANSWER-2
Technician- Grade I Exam
Questions And Correct Answers
The sensor of the temperature measuring device shall be submerged a minimum
of in. [____ mm] into the freshly mixed concrete. - CORRECT-ANSWER-3
in. [75 mm]
The temperature measuring device shall have a capacity of measuring
temperature of freshly mixed concrete to +- degrees F [+- C]
throughout a range of-----------CORRECT-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-----------CORRECT-ANSWER-Annually, accuracy
,The temperature of concrete may be measured in a wheelbarrow. True or False? -
CORRECT-ANSWER-True
The temperature of concrete may be measured in a wall form. True of False -
CORRECT-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? - CORRECT-ANSWER-False
What must be done to the sample container prior to sampling the concrete? -
CORRECT-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. - CORRECT-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? - CORRECT-ANSWER-At least 2 minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required? - CORRECT-
ANSWER-Reporting of temperature
The temperature of concrete is reported to the nearest degrees F [ C]
- CORRECT-ANSWER-1 degree F [0.5 C]
According to ASTM C1064, what is one reason to take the temperature of concrete?
- CORRECT-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? - CORRECT-ANSWER-False
When sampling from a revolving drum truck mixer, concrete must be sampled at
a minimum of regularly spaced intervals during discharge of the middle
portion of this batch. - CORRECT-ANSWER-2
