Section 3: Slump

Question 1

How many layers do you do with a slump test?

Answer 1

3 layers

Question 1

What is the first step of a slump test?

Answer 1

Dampen the inside

Question 2

How many times do you rod each layer with a slump test?

Answer 2

25

Question 3

How far do you penetrate the previous layer with the tamping rod during a slump test?

Answer 3

Approximately 1 inch

Question 4

What do you do after rodding the last layer in a slump test?

Answer 4

Strike off the top with a rolling motion and clean around the base

Question 5

How long do you take to lift the cone during a slump test?

Answer 5

5 +/- 2 sec (3 to 7 sec)

Question 6

What do you record a slump test to?

Answer 6

1/4 inch

Question 7

How long do you have to complete a slump test?

Answer 7

2.5 minutes

Question 8

What would be a reason to disregard a slump test?

Answer 8

If it falls away to one side

Question 9

Can the interior of a slump mold have minor irregularities?

Answer 9

No

Question 10

Where is the measurement taken from on the slump test?

Answer 10

Center of the displaced top surface