PIC Pavement Joints & Longitudinal Seam Construction 2

Question 1

A transverse (butt) joint at the start of a new paving day is properly formed by:

Accepted Answer

Cutting back the previously placed mat vertically to full compacted depth

Answer

Cutting back to a clean, full-depth vertical face ensures the new material bonds at full thickness and achieves proper density at the transverse joint.

Question 2

When ending a paving operation at a transverse joint, the inspector should verify that the mat has been:

Accepted Answer

Cut perpendicular to the paving direction at full compacted depth with a vertical face

Answer

A full-depth perpendicular cut provides a clean vertical face so the next paving operation can butt against it at full mat thickness.

Question 3

What is the primary purpose of applying tack coat to a transverse joint face before resuming paving?

Accepted Answer

To promote adhesion between the new HMA and the existing cured asphalt face

Answer

Tack coat creates a bonding interface between the cured existing asphalt and the new HMA, reducing the risk of delamination and water ingress at the transverse joint.

Question 4

What is the recommended rolling direction for achieving proper density at a transverse joint during breakdown compaction?

Accepted Answer

Roll perpendicular to the joint, beginning on the cold side and moving into the hot mat

Answer

Rolling perpendicular to the transverse joint, beginning on the cold side, presses material into the joint face rather than pushing it away from the joint.

Question 5

Immediately before paving resumes at a transverse joint, which set of conditions should the inspector verify?

Accepted Answer

The joint area is clean and dry, tack coat has been applied, and the face is cut to full compacted depth

Answer

A clean, full-depth vertical face with tack coat ensures maximum bond strength and prevents contamination at the transverse joint, which is a common location for early pavement failure.

(PIC) Paving Inspector Certification Practice Test

(PIC) Paving Inspector Certification Practice Test

PIC Pavement Joints & Longitudinal Seam Construction 2