A dowel bar retrofit (DBR) is a method of reinforcing cracks in highway pavement by inserting steel dowel bars in slots cut across the cracks. It is a technique several states have successfully used to address faulting in older jointed plain concrete pavements. The typical approach is to saw cut and jackhammer out the slots for the dowels. Following dowel placement the slots are then typically backfilled with a non-shrink concrete mixture (grout) and the pavement is diamond-ground to restore smoothness.
Read more about Dowel Bar Retrofit: History, Dowel Bar Retrofit Overview, Dowel Bar Retrofit Process, Problems
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