Date Created
Minnesota Department of Transportation
The objectives of this study were to document the performance of roads using full-depth reclamation (FDR) and stabilized FDR (SFDR) in Minnesota; help develop SFDR design parameters appropriate for Minnesota; provide information on FDR/SFDR design procedures and specifications from beyond Minnesota; share current Minnesota FDR practices; and catalog the characteristics of some FDR/SFDR roads. A comprehensive literature review of FDR/SFDR projects and case studies was conducted; and an online survey was distributed to Minnesota local road agencies to determine the stabilizing agents used for SFDR projects. Eighteen FDR/SFDR test sections from eight counties were then selected for a case study; and performance data and core samples were collected for the sections. Minnesota gravel equivalency (GE) analysis was performed to back-calculate the granular equivalent factor for FDR/SFDR layers based on the design equivalent single axle loads (ESALs) and R-values for subgrade soils. The back-calculated GE values indicate that designers have likely been using GE values for FDR/SFDR layers that are consistent with current recommendations. It is recommended that the current GE values be generally retained for FDR/SFDR design. However; when slower-moving vehicles are the critical design consideration; relatively robust performance of FDR/SFDR layers may be expected. Visual distress surveys indicated that the FDR/SFDR bases studied are performing well in terms of destroying crack patterns that are often reflected through traditional hot mix asphalt (HMA) overlays. Therefore; decision makers may want to consider the use of FDR/SFDR as a base for reasons other than structural capacity.
Collection Name
Report Number
File Type
Object File Name
Rights Statement
Physical Location
MnDOT Library
Persistent Link

Supporting Item