ACI Concrete Field-Testing Technician- Grade I Questions 100% Correct Answers Verified Latest 2024 Version
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ACI Concrete Field-Testing Technician- Grade I
Questions | 100% Correct Answers | Verified |
Latest 2024 Version
Section 1: Temperature of Freshly Mixed Hydraulic-Cement Concrete - C1064
The end of the temperature sensing portion of the temperature measuring device is submerged a
minimum of __...
ACI Concrete Field-Testing Technician- Grade I
Questions | 100% Correct Answers | Verified |
Latest 2024 Version
Section 1: Temperature of Freshly Mixed Hydraulic-Cement Concrete - ✔✔C1064
The end of the temperature sensing portion of the temperature measuring device is submerged a
minimum of _____ into the freshly mixed concrete. - ✔✔3 inches
The temperature measuring device shall be capable of accurately measuring temperature of freshly
mixed concrete to _____, throughout a range of _____. - ✔✔+/- 1 °F
30 °F to 120 °F
The temperature measuring device shall be verified _____, or whenever there is a question of _____. -
✔✔Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False? - ✔✔True
The temperature of concrete may be measured in a wall form. True of False - ✔✔True
A composite sample of concrete is required even if the only purpose for obtaining the sample is to
determine temperature. True of False? - ✔✔False
What must be done to the sample container prior to sampling the concrete? - ✔✔Dampen (with water)
What must be done to the concrete surrounding the temperature measuring device after the device is
submerged in the fresh concrete. - ✔✔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? - ✔✔At least 2
minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required? - ✔✔Reporting of temperature
The temperature of concrete is reported to the nearest _____. - ✔✔1 °F
According to ASTM C1064, what is one reason to take the temperature of concrete? - ✔✔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? - ✔✔False
The sample of concrete used for temperature determination must be rodded 25 times. True or False? -
✔✔False
Sampling by this method is required when tests are to be made to determine _____ with specification
requirements. - ✔✔Compliance
This method covers sampling from four types of mixtures which are _____, _____, _____, _____, and
_____. - ✔✔Stationary mixers,
Paving mixers,
Revolving Drum mixers
Continuous mixers, and
Open Top mixers
The maximum allowable time between obtaining the first and final portions of a composite sample is
_____ minutes. - ✔✔15
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