01124411

Component

https://doi.org/10.3141/2095-14

http://scholar.google.com...eche&publication_year=2009

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 postconstruction 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.

01145025

09-0815

English

pp 136-143

2009

Transportation Research Record: Journal of the Transportation Research Board

9780309126328

Print

Figures (5) ; Photos (6) ; References (11) ; Tables (1)

Asphalt emulsions; Before and after studies; Core samples; Deflection; Falling weight deflectometers; Full-depth reclamation; Layer coefficient (Pavements); Modulus of resilience; Pavement structural numbers; Pavement widening

Pavement structural capacity

Fairburn (Georgia)

Highways; Maintenance and Preservation; Materials; Pavements; I31: Bituminous Binders and Materials; I61: Equipment and Maintenance Methods

TRIS, TRB, ATRI

Jan 30 2009 5:03PM

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