Stabilized Full Depth Reclamation (SFDR)

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Paver-placed Stabilized Full Depth Reclamation (SFDR) is a roadway repair process similar to CIR, in which the existing pavement is recycled with performance additives, but to the full depth of the existing pavement rather than the top few inches. Pavement cores and an asphalt mix design is required to confirm the existing pavement structure's suitability for SFDR. SFDR entails full-depth milling of the existing pavement with a milling machine, and adding Portland cement and foamed-liquid asphalt stabilizers to the pulverized recycled material creating a new 8 or more inches thick base layer. The recycled base layer is then placed into a conventional paving machine and re-laid, rolled, and compacted. SFDR requires a new wearing surface be placed over the RAP material, which typically includes a traditional 2 inches to 3 inches hot mix asphalt overlay. This repair alternative is reserved for relatively low-volume streets with a PCI from 40 to 50. We expect to extend a pavement's life 18+ years with SFDR.