T 269 Air Voids

Question 1

Which of the following is considered an open asphalt mixture?

Answer 1

Compacted asphalt mixtures with 10% or more air voids

Question 2

The calculations of the percent air voids in a compacted HMA specimen requires the determination of the bulk specific gravity of the compacted HMA specimen and the theoretical maximum specific gravity of the loose HMA sample?

Answer 2

TRUE

Question 3

The theoretical maximum specific gravity Gmm can be a lower value than the bulk specific gravity Gmb?

Answer 3

FALSE

Question 4

Calculate and report the percent air voids Pa for compacted asphalt mixture specimen with bulk specific gravity Gmb of 2.425 in theoretical maximum specific gravity of 2.556?

Answer 4

5.1%

Question 5

A compacted HMA specimen has been submitted for testing the specification state that T166 and T209 shall be used for determining the specific gravities for calculations of percent air voids PA. Using T166 you can determine the specimen absorbs 2.6% of water by volume what alternate test method should be used to measure the bulk specific gravity Gmb of the specimen?

Answer 5

T275 or T331

Question 6

A compacted open asphalt mixture Pa greater than or equal to 10% specimen has been submitted for testing the specification state that T275 and T209 shall be used for determining the specific gravities for calculation of percent air voids Pa. Per T269 what alternate test methods should be used to measure the bulk specific gravity Gmb of the specimen?

Answer 6

T269 volume method or T331

Question 7

What does T269 volume method used to determine density?

Answer 7

Height and diameter of the specimen