ACI Certification Section 1
3 inches - ANS-The end of the temperature sensing portion of the temperature measuring
device is submerged a minimum of______ into the freshly mixed concrete.
plus or minus 1 degree F and 30-120 degrees F - ANS-The temperature measuring device shall
be capable of accurately measuring the temperature of freshly mixed concrete to ________
throughout a range of ________.
annually and accuracy - ANS-The temperature measuring device shall be verified ________ or
whenever there is a question of ________.
True - ANS-The temperature of concrete may be measured in a wheelbarrow. True or False.
True - ANS-The temperature of concrete may be measured in a wall form. True or False.
False - ANS-A composite sample of concrete is required even if the only purpose for obtaining
the sample is to determine temperature. True or False.
dampened - ANS-What must be done to the sample container prior to sampling the concrete?
fill the void by lightly pressing the concrete - ANS-What must be done to the concrete
surrounding the temperature measuring device after the device is submerged in the fresh
concrete?
minimum of 2 minutes maximum of 5 minutes - ANS-How long must the temperature measuring
device remain in the freshly mixed concrete?
reporting - ANS-After the temperature of the concrete is read, what is then required?
1 degree F - ANS-The temperature of the concrete is reported to the nearest ...
verify conformance of specified temperature - ANS-According to Test Method C1064/C1064m,
what is one reason to take the temperature of concrete?
False - ANS-A maximum temperature of freshly mixed concrete is specified in Test Method
C1064/C1064m. True or False.
False - ANS-The sample of concrete used for temperature determination must be rodded 25
times. True or False.
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