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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

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

C) 10 minutes

A) 1 minute

B) 2-5 minutes

D) 15 minutes

2 / 10

What is the primary purpose of ASTM C1064?

A) To determine the chemical composition of concrete

D) To evaluate the tensile strength of concrete

C) To assess the drying time of concrete

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

3 / 10

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

1 minutes

5 minutes

2 minutes

10 minutes

4 / 10

How often should the accuracy of the temperature measuring device be verified?

C) Annually

A) Monthly

B) Quarterly

D) Every two years

5 / 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?

± 0.5 °F (± 0.3 °C)

± 1.0 °F (± 0.5 °C)

± 2.0 °F (± 1.0 °C)

± 1.5 °F (± 0.8 °C)

6 / 10

Which committee is responsible for the ASTM C1064 standard?

C) Committee C12 on Mortar and Grout

B) Committee C09 on Concrete and Concrete Aggregates

A) Committee C09 on Cement

D) Committee C15 on Manufactured Masonry Units

7 / 10

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

D) Stir the concrete around the device

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

A) Press down on the device to submerge it deeper

C) Add more concrete to the container

8 / 10

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

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

D) It designates the section number

9 / 10

What type of bath is used for verifying the accuracy of temperature measuring devices?

C) Sand bath

B) Oil bath

A) Water bath

D) Air bath

10 / 10

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

B) 15 minutes

A) 30 minutes

D) 60 minutes

C) 5 minutes

Your score is

The average score is 67%