Field Operations Guide - Kentucky Transportation Cabinet

SURFACE (A000)Slab Lifting (A450)RECOMMENDEDPROCEDUREFOG-3141. Discuss with crew the requirements of the job.2. Place traffic-control devices as necessary.3. Drill holes, using jackhammer or core drill.4. Clean holes, using compressed air.5. Pump polyurethane into holes.6. Caution: Raise concrete slab or area being mud jacked uniformly.7. Plug the holes.8. Clean roadway surface.9. Remove traffic-control devices.Note: This operation may be to fill voids or it may be an attempt to raisea concrete slab to proper elevation. Void-filling is relatively simple;however, raising a pavement requires the establishment of someelevation-reference hubs or the provision of elevation-measuringdevices.Special Note: Determine accomplishment before leaving job site.10/11 Page 2 of 2