01332929

Component

https://doi.org/10.3141/2253-01

http://scholar.google.com...gyei&publication_year=2011

Innovative pavement rehabilitation techniques, such as in-place recycling, are becoming more prevalent as highway agencies face an ever-increasing list of pavement maintenance needs and declining or stagnant budgets. Full-depth reclamation (FDR) has been shown to be a cost-effective alternative to deep milling and repaving to rehabilitate deteriorated flexible pavements. The results of previous FDR studies that investigated pavement structural capacity through the use of deflection testing suggest that long-term strength gain may be achieved through curing; however, such a strength gain has not been well quantified. This study documented the in situ structural testing, with a falling weight deflectometer, of three FDR projects constructed in 2008. Deflection testing was performed periodically at the project sites in the first 2 years after reclamation. This study showed that an accurate estimation of the final structural capacity of an FDR project may not feasibly be achieved immediately after the project has been completed and that it could vary greatly depending on the stabilizing agent used. If data from early-age testing are used to calculate design parameters for future projects, the parameters may be too conservative and result in the loss of potential cost savings through the use of unnecessary overlay materials. A cost analysis, based on data collected in this study, showed that these potential cost savings could approach $37,000 per lane mile. Further mechanistic-based studies of the time-dependent structural response of FDR materials are recommended.

01358796

11-1257

English

pp 3-9

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309222891

Print

Figures (3) ; Photos (1) ; References (24) ; Tables (4)

Costs; Deflection tests; Falling weight deflectometers; Flexible pavements; Full-depth reclamation; In-place recycling; Pavement maintenance; Rehabilitation; Structural analysis; Time dependence

Highways; Maintenance and Preservation; Pavements; I61: Equipment and Maintenance Methods

PRP, TRIS, TRB, ATRI

Feb 17 2011 5:44PM

• Assessing the Compactability of Recycled Concrete Aggregate
• Assessment of Corrosion Potential of Coarse Backfill Aggregates for Mechanically Stabilized Earth Walls
• Early-Age Structural Properties of Base Material Treated with Asphalt Emulsion (With Discussion and Closure)
• Experimental and Numerical Evaluation of Stabilization Effect on Pollutant Mobility from Incinerator Bottom Ash Waste
• Forensic Investigation of Distressed Pavement Supported on a Base Course Containing Recycled Concrete Aggregate
• Performance of Continuously Reinforced Concrete Pavement Containing Recycled Concrete Aggregates
• Reliability-Based Design of Mechanically Stabilized Earth: Fill Properties and Variable Metal Loss