ACI CONCRETE STRENGTH TESTING TECHNICIAN CP 19 FULL QUESTIONS AND CORRECT ANSWERS VERIFIED CERTIFICATION STUDY PACK

ACI CONCRETE STRENGTH TESTING
TECHNICIAN CP 19 FULL QUESTIONS AND
CORRECT ANSWERS VERIFIED
CERTIFICATION STUDY PACK

●● 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.