Diagnose slab curling and select a remediation approach

Steps

1. Confirm the symptom (edges or joints lifting relative to the panel interior) follows joint/panel geometry, which is characteristic of curling, rather than a broader subgrade or structural settlement pattern.
2. Identify likely contributing causes on the specific project (differential top-to-bottom drying shrinkage, subgrade/vapor-retarder moisture conditions, high-shrinkage mix, inadequate curing) rather than assuming a single universal cause.
3. For floor-covering or polishing projects, measure curling magnitude at joints, since excessive curling can telegraph through thin floor coverings or cause edge chipping/spalling under forklift traffic on polished floors.
4. Match remediation to severity: grinding down high joint edges for cosmetic/trip-hazard correction, slab stitching or load-transfer repair for structural continuity, or subgrade/void-fill correction in severe cases -- and avoid assuming grinding alone fixes an underlying moisture or subgrade cause.
5. Track curling measurements over time before committing to a permanent repair, since curling magnitude can change seasonally with moisture cycling.