CTQP Asphalt Paving Inspection 4

Question 1

What does the term 'bleeding' refer to in asphalt pavement?

Accepted Answer

Excess asphalt binder migrating to the surface

Answer

Bleeding occurs when excess asphalt binder migrates upward to the pavement surface, creating a shiny, sticky film.

Question 2

During asphalt paving operations, what is the primary purpose of the screed on a paving machine?

Accepted Answer

To compact and smooth the asphalt to the required thickness and surface texture

Answer

The screed strikes off, consolidates, and textures the asphalt mat to the specified width, thickness, and surface finish.

Question 3

What minimum pavement surface temperature is typically required before applying tack coat?

Accepted Answer

50°F (10°C)

Answer

Tack coat is generally not applied when the pavement surface temperature is below 50°F (10°C) because the emulsion will not break and bond properly.

Question 4

A longitudinal joint in an asphalt pavement is best described as a joint that runs:

Accepted Answer

Parallel to the direction of traffic

Answer

Longitudinal joints run parallel to the direction of travel and typically occur between adjacent paving lanes.

Question 5

Which test is used in the field to measure the density of a compacted asphalt pavement layer non-destructively?

Accepted Answer

Nuclear density gauge test

Answer

The nuclear density gauge measures the density of compacted asphalt pavement non-destructively by emitting gamma radiation and detecting backscatter.

CTQP - Construction Training & Qualification Program Practice Test