C1064/C1064M – 17—Temperature of Freshly Mixed Hydraulic-Cement Concrete
This test method covers the determination of temperature of freshly mixed hydraulic-cement concrete.
1 / 10
What type of container is required for measuring the temperature of freshly mixed concrete?
The container must be large enough to ensure there is at least 75 mm of concrete in all directions around the sensor to accurately measure the temperature.
2 / 10
At what maximum time interval after obtaining the sample should the temperature of the concrete be measured?
3 / 10
What type of bath is used for verifying the accuracy of temperature measuring devices?
Verification of the accuracy of the temperature measuring devices may be made in oil or other suitable bath liquids having uniform density.
4 / 10
According to ASTM C1064/C1064M, the temperature measuring device must be capable of accurately measuring the temperature of fresh concrete to within what range?
5 / 10
After inserting the temperature measuring device into the fresh concrete, what should be done with the surrounding concrete?
6 / 10
What is the reported accuracy of the reference temperature measuring device?
The reference temperature measuring device must be readable and accurate to ±0.2 °C at the verification points.
7 / 10
What is the significance of the number following the designation C1064/C1064M in the standard?
The number following the designation indicates the year of the last revision of the standard.
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What is the maximum allowable difference in readings between the reference and the test temperature measuring devices during verification?
The difference in readings between the reference and the test temperature measuring devices should not exceed 0.5 °C during verification.
9 / 10
How often should the accuracy of the temperature measuring device be verified?
The accuracy of each temperature measuring device used for determining the temperature of freshly mixed concrete should be verified at least annually.
10 / 10
What is the minimum immersion depth for the temperature measuring device in the concrete?
The end of the temperature sensing portion of the device must be submerged a minimum of 75 mm into the freshly mixed concrete to ensure an accurate measurement.
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The average score is 67%
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