Spalling of Transverse Joints

Description

Cracking, breaking, chipping, or fraying of slab edges within 0.3 m from the face of the transverse joint.

Severity Levels

Low
Spalls < 75 mm wide, measured to the face of the joint, with loss of material, or spalls with no loss of material and no patching.

Moderate
Spalls 75 mm to 150 mm wide, measured to the face of the joint, with loss of material.

High
Spalls > 150 mm wide, measured to the face of the joint, with loss of material, or broken into two or more pieces, or contains patch material.

How to Measure

Record number of affected transverse joints at each severity level. A joint is affected only if the total length of spalling is 10 percent or more of the length of the joint. Rate the entire transverse joint at the highest severity level present for at least 10 percent of the total length of the spalling.

Record length in meters of the spalled portion of the joint at the assigned severity level for the joint. Spalls that have been repaired by completely removing all broken pieces and replacing them with patching material (rigid or flexible) should be rated as a patch. If the boundaries of the spall are visible, then also rate as a high severity spall. Note: All patches meeting size criteria are rated as patches.