CT 226 - Moisture Content of Agg

Question 1

The moisture content is defined as _______________.

Answer 1

The ratio, expressed as a percentage, of the weight of water in the sample to the dry weight of the sample

Question 2

The balance must have a sensitivity better than_____________ of the weight of the sample.

Answer 2

0.1 percent

Question 3

The drying device must maintain a temperature of __________________________________.

Answer 3

230 deg F +- 9 deg F

Question 4

Prior to testing, the sample should be prepared according to ___________.

Answer 4

CT 201

Question 5

The minimum testable mass of soil is __________.

Answer 5

100 grams

Question 6

The minimum testable mass of agg smaller than 3/8” is _________.

Answer 6

500 grams

Question 7

Typically, _____ hr. of drying is sufficient to achieve a constant mass..

Answer 7

16 hours

Question 8

Constant mass after drying is defined by this test method as _________.

Answer 8

Additional drying periods of 1 hr. produce a change in mass of less than 0.1 percent.

Question 9

It is not required to allow the sample to cool to room temp before measuring the dry mass.

Answer 9

False

Question 10

The moisture content shall be reported to the nearest ______________.

Answer 10

0.1 %

Question 11

What is the moisture content if the wet weight was 123.2 g and the dry weight was 106.1g.

Answer 11

16.1%

Question 12

What is the minimum sample size when determining the moisture content of soil?

Answer 12

100g

Question 13

What is the minimum sample size when determining the moisture content of coarse agg?

Answer 13

1000g

Question 14

At what point is the sample considered to be completely dry?

Answer 14

When it has reached constant mass