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

C) 100 mm

A) 50 mm

B) 75 mm

D) 125 mm

2 / 10

How should the thermometer be inserted into the concrete sample to ensure an accurate temperature reading?

To a depth of 2 to 3 inches from the bottom of the container

To the bottom of the container

To a depth of 3 inches

So that it is entirely submerged

3 / 10

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

A) 30 minutes

D) 60 minutes

B) 15 minutes

C) 5 minutes

4 / 10

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

B) Oil bath

D) Air bath

C) Sand bath

A) Water bath

5 / 10

At what maximum time interval after obtaining the sample should the temperature of the concrete be measured?

7 Minutes

10 Minutes

5 Minutes

15 Minutes

6 / 10

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

10 minutes

5 minutes

1 minutes

2 minutes

7 / 10

Which ASTM standard is referenced for the definition of terms used in ASTM C1064?

C) C172

A) C125

B) C150

D) C670

8 / 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

C) To assess the drying time of concrete

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

9 / 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)

± 1.5 °F (± 0.8 °C)

± 0.5 °F (± 0.3 °C)

± 2.0 °F (± 1.0 °C)

10 / 10

Which committee is responsible for the ASTM C1064 standard?

A) Committee C09 on Cement

C) Committee C12 on Mortar and Grout

B) Committee C09 on Concrete and Concrete Aggregates

D) Committee C15 on Manufactured Masonry Units

Your score is

The average score is 67%