ACI Field Grade 1 COMPULSORY REVISION QUESTIONS AND ANSWERS 2024
The temperature measuring device shall be cable of accurately measuring the temperature of freshly mixed concrete to 1°F throught a range of____________________________. - 30 - 120°F It is acceptable to measure the temperature of freshly mixed concrete in the forms provided? - The sensor of the temperature measuring device has at least 3 in. of cover in all directions. Composite samples are required even if the only purpose for obtaining the sample is to determine temperature. - False The temperature measuring device is left in the freshly mixed concrete for at least _______________ but not more than 5 minutes. - 2 minutes Test Method C1064/C1064M specifies a maximum temperature of freshly mixed concrete. - False The elapsed time between obtaining the first and final portions of a composite sample shall not exceed ____________________. - 15 minutes
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