Aashto R 76 - Reducing Samples

Question 1

Fine agg samples that are drier than a SSD condition can be reduced to testing size by using Method A.

Answer 1

True

Question 2

Coarse agg samples may be reduced to testing size using Methods _____ and _______ only.

Answer 2

A and B

Question 3

The minimum width of the individual chutes shall be:

Answer 3

50% larger than the largest agg in the sample

Question 4

In method C (mini stockpile) obtain a test specimen by selecting at least __________ increments of material at random locations.

Answer 4

5

Question 5

In the quartering method, the diameter of the flattened pile should be approx. ________to ______ time the thickness.

Answer 5

4-8

Question 6

Sample splitters shall be equipped with a hopper or straightedged pan which has a width equal to or slightly less than the overall width of the assembly of chutes.

Answer 6

True

Question 7

When placing material into a sample splitter hopper or pan

Answer 7

Uniformly distribute it from edge to edge

Question 8

How many times must a mini stockpile be mixed before sampling?

Answer 8

3 times with spatula or scoop