Pavement Management

Question 1

What is the design purpose of asphalt pavement?

Answer 1

Standard or equivalent wheel load is 18,000 lbs. equivalent single axle load.

Question 2

What are the three components of asphalt?

Answer 2

Aggregate, Cement (AC20), Air Voids

Question 3

Mix I-5 is?

Answer 3

FABC = Fine Aggregate Bituminous Concrete

Question 4

Design criteria or Failure criteria in asphalt can be described as what type of failure?

Answer 4

answer d) all of the above

Performance, Fatigue and Rutting

Question 5

To achieve the proper level of air void, compaction should not take place below what temperature?

Answer 5

175 degrees

Question 6

Water that contributes to frost problems in asphalt pavement comes from/

Answer 6

Answer d) all of the above

Surface Water, Moisture held or drawn through the soil, High water Table

Question 7

Potholes can most effectively be repaired by?

Answer 7

a) removing damaged area and making a full depth repair with proper compaction.

Question 8

Recommended procedure for cutout deeper than 6” is

Answer 8

a) Placing at fault and more than one lift

Question 9

What is the single most important factor affecting the life of the pavement?

Answer 9

Compaction

Question 10

Compaction is defined as?

Answer 10

The process by which the asphalt is compressed and reduced in volume.

Question 11

What is the recommended percentage of air void?

Answer 11

4 1/2 % - 7%

Question 12

If asphalt is compacted at lower temperatures, what can you expect?

Answer 12

More voids in the pavement

Question 13

What is the minimum temperature for rolling asphalt?

Answer 13

175 degrees

Question 14

What can occur if compaction is continued below 175 degrees?

Answer 14

You may fracture the aggregate

Question 15

Can compaction vary due to layer thickness?

Answer 15

Yes

Question 16

What is the ideal mix temperature of asphalt?

Answer 16

300 - 325 degrees

Question 17

What is the recommended laydown temperature of asphalt?

Answer 17

between 225 and 280 degrees

Question 18

What is the minimum air temperature you should pave to?

Answer 18

40 degrees

Question 19

Should you consider heat loss from plant to laydown?

Answer 19

Yes.

Question 20

Name three important causes of pavement failure?

Answer 20

Weak Subgrade, Design of Pavement and Improper Maintenance

Question 21

Name four of the eight Pavement Treatments

Answer 21

Overlay, P.S.O. (pulverization stabilization overlay), Crack Sealing, Pot hole repair.
Also, Slurry Seal, Micro Seal, Reconstruction, Mill and Overlay

Question 22

Crack Sealing and Pot Hole Repair are considered?

Answer 22

Maintenance

Question 23

A proper pavement management system provides for?

Answer 23

Answer d) all of the above

a) proper maintenance procedures
b) prolongs life expectancy of the road
c) tool for prioritizing street repair

Question 24

What is considered a structural maintenance technique?

Answer 24

b) overlay

Question 25

Stabilization of the subgrade can be achieved through the use of?

Answer 25

Answer d) all of the above

a) Lime
b) Calcium Chloride
c) Sodium Chloride

Question 26

The best ways to prevent alligator cracking is?

Answer 26

a) Crack Sealing

b) Slurry Sealing

Question 27

The following condition can be corrected most effectively with the use of a Slurry Seal.

Answer 27

c) Polished Aggregate

Question 28

Bleeding can best be described as free asphalt on the surface of the pavement caused by?

Answer 28

b) To much asphalt in one or more pavement courses

Question 29

In winter cold asphalt is used because?

Answer 29

c) Stockpiling of material allows greater availabilty and move-ability of material since hot material is not produced