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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

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

C) A metal container

D) A plastic container

2 / 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?

± 1.5 °F (± 0.8 °C)

± 2.0 °F (± 1.0 °C)

± 1.0 °F (± 0.5 °C)

± 0.5 °F (± 0.3 °C)

3 / 10

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

C) Annually

D) Every two years

B) Quarterly

A) Monthly

4 / 10

What is the primary purpose of ASTM C1064?

A) To determine the chemical composition of concrete

C) To assess the drying time of concrete

D) To evaluate the tensile strength of concrete

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

5 / 10

Which committee is responsible for the ASTM C1064 standard?

C) Committee C12 on Mortar and Grout

A) Committee C09 on Cement

B) Committee C09 on Concrete and Concrete Aggregates

D) Committee C15 on Manufactured Masonry Units

6 / 10

What should be done to the sample container before sampling freshly mixed concrete?

A) It should be coated with a non-stick spray

C) It should be dampened with water

D) It should be lined with plastic

B) It should be heated

7 / 10

What is the minimum required size of the concrete sample for temperature measurement according to ASTM C1064/C1064M?

2 cubic foot

1 cubic foot

1 Cubic Yard

0.5 cubic foot

8 / 10

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

A) C125

C) C172

D) C670

B) C150

9 / 10

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

B) Oil bath

D) Air bath

A) Water bath

C) Sand bath

10 / 10

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

C) Add more concrete to the container

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

D) Stir the concrete around the device

Your score is

The average score is 59%