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 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.
2 / 10
How long should the temperature measuring device remain in the concrete to obtain a reading?
The device should remain in the concrete for at least 2 minutes but not more than 5 minutes before reading the temperature.
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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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According to ASTM C1064, what should be done if the temperature measuring device fails verification?
If the temperature measuring device fails verification, it may be adjusted and then reverified to check if it then meets the required accuracy.
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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.
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Which committee is responsible for the ASTM C1064 standard?
ASTM Committee C09 on Concrete and Concrete Aggregates is directly responsible for the ASTM C1064 standard.
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What should be done to the sample container before sampling freshly mixed concrete?
Immediately prior to sampling the freshly mixed concrete, the sample container should be dampened with water.
8 / 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.
9 / 10
What is the minimum required size of the concrete sample for temperature measurement according to ASTM C1064/C1064M?
10 / 10
What is the primary purpose of ASTM C1064?
ASTM C1064 provides a method for measuring the temperature of freshly mixed hydraulic-cement concrete to verify conformance to specified temperature requirements.
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