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.