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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?

B) A container that provides at least 75 mm of concrete in all directions around the sensor

C) A metal container

A) A container that allows for 50 mm of concrete around the sensor

D) A plastic container

2 / 10

What should be done after placing the temperature measuring device in the freshly mixed concrete?

B) Gently press the concrete around the device at the surface to close the void

D) Stir the concrete around the device

A) Press down on the device to submerge it deeper

C) Add more concrete to the container

3 / 10

What is the reported accuracy of the reference temperature measuring device?

B) ±0.2 °C

C) ±0.5 °C

D) ±1.0 °C

A) ±0.1 °C

4 / 10

What is the primary purpose of ASTM C1064?

B) To measure the temperature of freshly mixed hydraulic-cement concrete

A) To determine the chemical composition of concrete

C) To assess the drying time of concrete

D) To evaluate the tensile strength of concrete

5 / 10

According to ASTM C1064, what should be done if the temperature measuring device fails verification?

C) Use the device for another purpose

D) Send the device for manufacturer recalibration

B) Adjust and reverify the device

A) Discard the device

6 / 10

How long should the temperature measuring device remain in the concrete to obtain a reading?

B) 2-5 minutes

C) 10 minutes

D) 15 minutes

A) 1 minute

7 / 10

What is the significance of the number following the designation C1064/C1064M in the standard?

D) It designates the section number

B) It indicates the year of last revision

A) It indicates the number of revisions

C) It specifies the number of pages in the standard

8 / 10

What is the maximum allowable difference in readings between the reference and the test temperature measuring devices during verification?

A) 0.2 °C

D) 1.5 °C

B) 0.5 °C

C) 1.0 °C

9 / 10

Which committee is responsible for the ASTM C1064 standard?

A) Committee C09 on Cement

B) Committee C09 on Concrete and Concrete Aggregates

D) Committee C15 on Manufactured Masonry Units

C) Committee C12 on Mortar and Grout

10 / 10

After inserting the temperature measuring device into the fresh concrete, what should be done with the surrounding concrete?

Leave it undisturbed

Gently press the concrete around the device to eliminate air pockets

Rod the concrete 25 times

Scrape away excess concrete

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The average score is 59%