EXPERT ADVICE
Crack Filling and Crack Sealing
Continued from page 36
For deciding whether to fill or seal cracks, the expected move-
ment of the cracks in the pavement should be carefully con-
sidered. Generally, non-working cracks with moderate to no
edge deterioration should be filled and the ones with limited
edge deterioration are sealed. Experienced personnel can usu-
ally identify the crack type; working or non-working and take
the appropriate action. The following tabulation is a summary
of the foregoing descriptions.
Continued on page 40
Crack Characteristics
Crack Treatment Options
CRACK SEALING CRACK FILLING
0.2 – 0.75 in/5-19 mm 0.2 – 1.0 in/5- 25 mm
2. Edge deterioration (spalling,
secondary cracks) Minimal to none
< or = to 25% crack length Moderate to none
> or = to 50% of crack length.
3. Annual Horizontal movement > or = to 0.1 in/2.5 mm < or = to 0.1 in/2.5 mm
Typical crack types description Transverse (reflective &
thermal cracks), Longitudinal (reflec-
tive & Cold-joint cracks). Longitudinal- edge cracks, reflective and
cold-joint cracks. Block cracks.
1. Width (inch)/mm
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