In 2006, Virlyn B. Smith Road in Fairburn, Georgia, was determined to be a candidate for reconstruction. Pavement distresses, high seasonal demand from the Georgia Renaissance Festival, overall increased traffic volumes, and the need for lane widening placed Fairburn at the top of the reconstruction list. Instead of traditional methods—full-depth patching nearly 40% of the road followed by a layer of hot-mix asphalt—full-depth reclamation (FDR) with engineered emulsion was chosen. The objective of the project was to improve the structural capacity and widen Virlyn B. Smith Road. The purpose of this paper is to validate the benefits of FDR with engineered emulsion using preconstruction and post-construction falling weight deflectometer (FWD) data from Virlyn B. Smith Road. This paper describes the equipment, materials, and procedures used to reclaim and stabilize Virlyn B. Smith Road and the methods used for data analysis. FWD data taken before and 1 year after construction were compared. The parameters measured by FWD on the road structure are modulus of base and pavement, normalized maximum deflections, and effective structural number. One year after construction, the effective structural number, modulus of base, and modulus of pavement increased significantly and normalized maximum deflections decreased. Resilient modulus analysis was performed on cores taken from the FDR layer in the finished road. The modulus, structural number, and layer coefficient from the cores proved to be higher than those found by FWD analysis. Overall data show improvement in the road structure after stabilization and overlay.
Full-Depth Reclamation with Engineered Emulsion in Fairburn, Georgia
Transportation Research Record: Journal of the Transportation Research Board
Transportation Research Record: Journal of the Transportation Research Board ; 2095 , 1 ; 136-143
01.01.2009
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Full-Depth Reclamation with Engineered Emulsion in Fairburn, Georgia
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