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

D) It designates the section number

C) It specifies the number of pages in the standard

A) It indicates the number of revisions

B) It indicates the year of last revision

2 / 10

Which committee is responsible for the ASTM C1064 standard?

A) Committee C09 on Cement

B) Committee C09 on Concrete and Concrete Aggregates

C) Committee C12 on Mortar and Grout

D) Committee C15 on Manufactured Masonry Units

3 / 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?

± 1.0 °F (± 0.5 °C)

± 0.5 °F (± 0.3 °C)

± 1.5 °F (± 0.8 °C)

± 2.0 °F (± 1.0 °C)

4 / 10

Within how many minutes should the temperature of freshly mixed concrete be measured after obtaining the sample?

C) 5 minutes

A) 30 minutes

B) 15 minutes

D) 60 minutes

5 / 10

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

A) Press down on the device to submerge it deeper

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

D) Stir the concrete around the device

C) Add more concrete to the container

6 / 10

What is the minimum period that the thermometer should be left in the concrete to ensure a stable reading?

1 minutes

10 minutes

2 minutes

5 minutes

7 / 10

What is the minimum immersion depth for the temperature measuring device in the concrete?

D) 125 mm

A) 50 mm

C) 100 mm

B) 75 mm

8 / 10

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

Scrape away excess concrete

Gently press the concrete around the device to eliminate air pockets

Leave it undisturbed

Rod the concrete 25 times

9 / 10

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

B) 0.5 °C

D) 1.5 °C

C) 1.0 °C

A) 0.2 °C

10 / 10

What is the primary purpose of ASTM C1064?

D) To evaluate the tensile strength of concrete

A) To determine the chemical composition of concrete

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

C) To assess the drying time of concrete

Your score is

The average score is 67%