Rehabilitation of City Streets: A Case Study

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Full Depth Reclamation (FDR) is a particularly useful method for rehabilitating structurally failed pavements. City streets, once beyond their design life, tend to fail due to structural problems such as moisture damage in the base layer or alligator cracking. FDR is a relatively low-cost, energy saving method that is capable of solving pavement problems associated with the deeper layers of the base. It has been adopted as the preferred recycling technique in the USA and many other parts of the world. In addition, introducing an injected emulsion to the FDR materials further improves the overall pavement strength and resistance to moisture ingress. In this sense, FDR with injected emulsion is an ideal technique for rehabilitating or reconstructing low-volume roads that do not require a thick mat of hot mix asphalt (HMA), but could use some improvement of the pavement structure to resist moisture and improve strength.