Recommended Repairs for Cracking in PCC Pavements |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Dowelled/Undowelled |
|
|
|
Defect |
|
Orientation |
|
Location |
|
Description |
|
Transverse Joints |
|
Recommended Repair |
|
Plastic Shrinkage |
|
Any |
|
Anywhere |
|
Partial-depth and more |
|
Either |
|
Do nothing |
|
|
|
|
|
|
|
than 0.007 in. (0.18 mm) |
|
|
|
|
|
|
|
|
|
|
|
wide |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Uncontrolled Crack |
|
Transverse |
|
Mid-Panel |
|
Full-Depth |
|
Undowelled |
|
Saw/route and seal crack |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Dowelled |
|
Full-Depth Repair or LTRa |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Uncontrolled Crack |
|
Transverse |
|
Crosses or ends at |
|
Full-Depth |
|
Undowelled |
|
Saw & seal crack; |
|
|
|
|
|
transverse joint |
|
|
|
|
|
Epoxy sawed joint if uncracked |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Dowelled |
|
Full-Depth Repair or |
|
|
|
|
|
|
|
|
|
|
|
If crack jumps from
sawcut to edge |
|
|
|
|
|
|
|
|
|
|
of slab within 3 feet of
edge of slab, |
|
|
|
|
|
|
|
|
|
|
stop sawcut, saw & seal crack |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Uncontrolled Crack |
|
Transverse |
|
Parallel to & within |
|
Full-Depth |
|
Undowelled |
|
Saw and seal crack |
|
|
|
|
|
5 ft. (1.5 m) of joint |
|
|
|
|
|
Seal joint |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Dowelled |
|
Full-Depth repair to replace |
|
|
|
|
|
|
|
|
|
|
|
crack and joint |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Spalled sawcut or |
|
Transverse |
|
Anywhere |
|
Spalling; more than |
|
Either |
|
Partial-Depth Repair |
|
uncontrolled crack |
|
|
|
|
|
3.0 in. (75 mm) wide |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Uncontrolled Crack |
|
Longitudinal |
|
Relatively parallel to & within |
|
Full-Depth |
|
Either |
|
Saw/route & seal the crack |
|
|
|
|
|
1 ft. (0.3 m) of joint;
May |
|
|
|
|
|
or cross-stitch the crack |
|
|
|
|
|
cross or end at
longitudinal joint |
|
|
|
|
Epoxy sawed joint if uncracked |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Uncontrolled Crack |
|
Longitudinal |
|
Relatively parallel to & within |
|
Full-Depth, hairline, or spalled |
|
Either |
|
Remove and replace panel |
|
|
|
|
|
wheel path; 1 - 5
ft. |
|
|
|
|
|
or cross-stitch crack |
|
|
|
|
|
(0.3-1.5 m) from joint |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Uncontrolled Crack |
|
Longitudinal |
|
Relatively parallel to & further |
|
Full-Depth |
|
Either |
|
Cross-stitch crack |
|
|
|
|
|
than 5 ft. (1.5 m) from a |
|
|
|
|
|
|
|
|
|
|
|
longitudinal joint or edge |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Spalled sawcut or |
|
Longitudinal |
|
Anywhere |
|
Spalled |
|
Either |
|
Partial-Depth Repair |
|
uncontrolled crack |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Uncontrolled Crack |
|
Diagonal |
|
Anywhere |
|
Full-Depth |
|
Either |
|
Full-Depth Repair |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Uncontrolled Crack |
|
Multiple per panel |
|
Anywhere |
|
Two or more full depth cracks |
|
Either |
|
Remove and replace panel |
|
|
|
|
|
|
|
dividing panel into 3 or more pieces |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Notes: |
Full-Depth repair per Specification 2529 |
|
|
a |
LTR = load-transfer restoration
(if faulted less than 1/2"); 3
dowel bars per wheel path grouted into slots sawed across the crack. Slots must be parallel to each other and
the longitudinal joint. Backfill with
non-shrink, cement-based grout.
Diamond grind if faulting is severe. |
|
|
Partial-Depth repair per Specification 2530 |
|
|
|
|
|
Cross-stitch repair per Construction Manual 9.27 |
|
|
|
|
|
Repairs
should be made without use of Calcium Chloride |
|
|
|
|
unless early opening to
traffic is necessary. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|