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CMEC ACI WORKBOOK > ASTM C - 1064 - TEMPERATURE OF CONCRETE > Flashcards

ASTM C - 1064 - TEMPERATURE OF CONCRETE Flashcards

1
Q

YES OR NO

Do you wet sieve aggregate for tempature?

A

NO

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2
Q

In Inches

What aggregate size dictates that you wait 20+ minutes for temp. of batch for it to become homogenous?

A

3 inches or larger

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3
Q

2 things that it does

What are reference thermometers used for?

A

Use to calibrate and verify field thermometers.

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4
Q

In Inches

How deep must the field thermometer be inserted into the concrete?

A

3 inches

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5
Q

In Inches

How much space must the thermometer have on each side around the thermometers when taking temp.

A

3 Inches

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6
Q

How much bigger must the concrete cover be? _ times the nominal size of the aggregate?

A

3x

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7
Q

30-__ Degrees F

What is the temperature range of field thermometers? Accuracy Range?

A

30-120 F

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8
Q

+- __?

What is the accuracy of field theremometers?

A

+- 1 Degrees F

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9
Q

+- __?

What is the accuracy for reference thermometers?

A

+- 0.5 Degrees F

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10
Q

Every __ Months

How often must a digital thermometer be verified?

A

Every 12 Months

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11
Q

How often must “liquid in glass” be verified?

A

One Time

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12
Q

The _ _ _ _

What orginization must verifications be reported to?

A

The NIST

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13
Q

Digitial thermometers are verified at __ temperatures –> that are at least __ degrees apart.

A

1) 2
2) 30 Degrees F

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14
Q

Do you use OIL or WATER when verifying a digital thermometer?

A

OIL

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15
Q

+- __?

What is the tolerance temperature of the reference oil?

A

+- 0.5 Degrees F

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16
Q

When verifying/calibrating thermometers – what is the procedure for each?

1) How long must both thermometers be kept in oil?

A

1) 5 Minutes

17
Q

When calibrating thermometers – make sure the thermometers equal the ___?

A

Equals the reference thermometer temperature

18
Q

+- _ Degree

What must the reading between tested and reference thermometers be?

A

+- 1 Degree F

19
Q

Not less than __ minutes – No more than __ minutes

What is the time range a thermometer must be left in the concrete sample?

A

No less than 2 MINUTES

Not more than 5 MINUTES

CMEC ACI WORKBOOK (11 decks)

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