Block Cracking

Block Cracking is a series of interconnecting cracks that form in a roughly rectangular pattern. It can occur in both concrete and flexible road pavements.



In concrete pavements block cracking may occur as a result of insufficient slab thickness, loss of sub-base support or subgrade settlement.
In bituminous surfaces block cracking may be caused by the reflection of cracks in an underlying concrete pavement, asphalt shrinkage due to diurnal temperature variations or fatigue cracking in an embrittled asphalt wearing course.

Related Pages

External Links & References

  1. A Guide to the Visual Assessment of Pavement Condition
  2. Pavement Interactive
  3. Google Search
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