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ACI CONCRETE FIELD TESTING TECHNICIAN EXAM AND STUDY GUIDE 150 QUESTIONS AND CORRECT ANSWERS 2024 LATEST GRADED A+ The sensor of the temperature measuring device shall be submerged a minimum of _____ in. [_____mm] into the freshly mixed concrete€23,42
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ACI CONCRETE FIELD TESTING TECHNICIAN EXAM AND STUDY GUIDE 150 QUESTIONS AND CORRECT ANSWERS 2024 LATEST GRADED A+ The sensor of the temperature measuring device shall be submerged a minimum of _____ in. [_____mm] into the freshly mixed concrete
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ACI CONCRETE FIELD
ACI CONCRETE FIELD TESTING TECHNICIAN EXAM AND STUDY
GUIDE 150 QUESTIONS AND CORRECT ANSWERS 2024 LATEST
GRADED A+
The sensor of the temperature measuring device shall be submerged a minimum of _____ in.
[_____mm] into the freshly mixed concrete
ACI CONCRETE FIELD TESTING TECHNICIAN EXAM AN...
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ACI CONCRETE FIELD TESTING TECHNICIAN EXAM AND STUDY
GUIDE 150 QUESTIONS AND CORRECT ANSWERS 2024 LATEST
GRADED A+
The sensor of the temperature measuring device shall be submerged a minimum of _____ in.
[_____mm] into the freshly mixed concrete. - 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 _____. - 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. - ANSWER-15
Portions of a composite sample shall be thoroughly remixed bfore beginning tests on the sample. True
of False? - ANSWER-True
The maximum elapsed time allowed between obtaining the final portion of the composite sample and
beginning the tests for slump, temperature, and air content is _____ minutes. - ANSWER-5
The molding of strength test specimens shall begin within _____ minutes after fabricating the composite
sample. - ANSWER-15
The concrete sample must be protected from contamination and _____. - ANSWER-Rapid evaporation
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