Full Depth Reclamation

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Expectations

FDR is an alternative to deep rehabilitation and reconstruction techniques. It can treat all manner of distresses in the pavement structure except drainage issues and deep subgrade instability (greater than 2 feet below the existing surface). Deep subgrade issues can be treated with FDR in combination with soil stabilization. The service life of a FDR pavement is dependent on a good structural design and the adequacy of the selected treatment to mitigate the existing distress. The limiting factor of a well designed and constructed FDR pavement is often the life expectancy of the wearing surface and not the FDR layer. In optimum application situations, many agencies see their FDR treatments lasting 25 plus years.

FDR

Optimum

Moderate

 

Reactive

 

Type of Distress

Any distress in the treated layers

Minor drainage and/or some subgrade instability

Drainage issues and subgrade instability

Depth of Distress

Extends no deeper than treated layers

Below FDR treatment

Below FDR treatment

Life Extension

25+ years

15-25 years

5-15 years


EXAMPLES OF ROADS THAT HAVE BEEN TREATED WITH Full Depth Reclamation OVER VARIOUS STAGES IN SERVICE LIFE:

  • Georgia FDR Before
  • Georgia FDR After
  • Clipper, Rd South Carolina Before FDR
  • Clipper, Rd South Carolina During FDR
  • Clipper, Rd South Carolina After FDR
  • Penny Rd. Barrington, IL Before FDR
  • Penny Rd. Barrington, IL During FDR
  • Penny Rd. Barrington, IL 5 Years After FDR