FREE TRAINING FEATURE

FREE TRAINING FEATURE

Want to learn more about pavement management, in-place recycling, and pavement preservation? Do you feel like you're setup for failure as an agency engineer with little or no money to spend on your roads? Enter your email below to get free instant access to a two-hour video-training session that Blair did for the Northwest Pavement Management Association:

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Blair Barnhardt

Full Depth Reclamation

Full depth reclamation (FDR) is a reclamation technique in which the full flexible pavement section and a predetermined portion of the underlying materials are uniformly crushed, pulverized, or blended, resulting in a stabilized base course; further stabilization may be obtained through the use of available additives.

By addressing the entire pavement section, full depth reclamation is able to correct delinquent cross sections, increase the load bearing strength of the base and utilize 100% of the existing materials.  Substantial savings can be realized while meeting environmental goals.

Equipment for the process includes stabilizers, also called reclaimers and pulverizers as well as cold planing machines which often work in conjunction in large urban FDR projects to remove surplus asphalt.

Critical to the success of this process is the preliminary testing to establish design criteria for gradation, residual asphalt content, and the possible use of additives.  This reconstruction technique requires a wearing surface of a thickness to be determined by an analysis of traffic data.

In general, when a road requires more than 20% deep patching, the FDR process becomes a viable option.  In the FDR scenario, the entire length and width of the road gets stabilized into one homogeneous layer.  Quite often, the FDR with asphalt overlay option can be up to half of the price of conventional undercutting and reconstruction depending on the geographic area.  Again an FDR project provides a stabilized base but like the other process it does require a wearing surface.  For more information please contact us.

FDR in Sudbury, Ontario, Canada

FDR in Sudbury, Ontario, Canada

FDR in Anchorage, AK

FDR in Anchorage, AK

FDR in Roswell, GA

FDR in Roswell, GA

FDR in Jackson, MS (Natchez Trace Pkwy)

FDR in Jackson, MS (Natchez Trace Pkwy)