CTQP Asphalt Paving Inspection 2

Question 1

What instrument is used to measure the thickness of an asphalt core sample in the field?

Accepted Answer

Digital caliper

Answer

A digital or vernier caliper is used to measure the thickness of asphalt core samples taken from the compacted mat to verify thickness compliance.

Question 2

What is 'ride quality' or 'smoothness' measured with on FDOT asphalt projects?

Accepted Answer

An inertial profiler or profilograph

Answer

Inertial profilers or profilographs are used to measure pavement smoothness and produce an International Roughness Index (IRI) or Profile Index (PI) value.

Question 3

What is the maximum allowable deviation from design elevation for a finished asphalt surface per typical FDOT specifications?

Accepted Answer

1/4 inch

Answer

FDOT typically allows a maximum deviation of ±1/4 inch from design grade for finished asphalt pavement surfaces.

Question 4

What does 'joint density' refer to in asphalt paving?

Accepted Answer

The density of the asphalt at longitudinal or transverse construction joints

Answer

Joint density refers to the compacted density achieved at longitudinal or transverse construction joints, which are typically the weakest areas of a pavement mat.

Question 5

What is a 'string line' used for during asphalt paving operations?

Accepted Answer

Controlling the elevation and alignment of the paver screed

Answer

A string line or wire reference is used to guide the paver's automatic grade and slope controls, ensuring the finished mat meets design elevation and cross-slope requirements.

CTQP - Construction Training & Qualification Program Practice Test

CTQP - Construction Training & Qualification Program Practice Test

CTQP Asphalt Paving Inspection 2