Zanetis RoadHog Applications

A Full Depth Reclamation (FRD) is a pavement rehabilitation technique in which the full flexible pavement section and a pre- determined portion of the underlying materials are uniformly crushed, pulverized or blended, resulting in a stabilized base course (SBC); further stabilization may be obtained through the use of available additives.

FDR is distinguished from other rehabilitation techniques such as Cold Planing, Cold In-Place Recycling and Hot In-Place Recycling by the fact that the rotor or cutting head always penetrates completely through the existing asphalt layer and into the underlying base, sub-base or sub-grade layers.

  •Flexible Pavement Structures.
  •Parking Lots.
  •Low Volume, Secondary Roads.
  •City Streets.
  •Medium Volume Roadways.
  •Interstate Highways.
  •Private and Regional Airports.

  •Analyze existing materials.
  •Pulverize Existing Pavement.
  •Introduce Additive and Mix.
  •Shape the Mixed Material.
  •Compact.
  •Apply a Wearing Course.

Pulverize the existing pavement and underlying layers, simultaneously mix various stabilizing additives, if needed.
  •Fine grade and compact the SBC.
  •Fog seal or prime the SBC, as required.
  •Apply the specified surface treatment.

  •Performing simple pulverization (No stabilizing additives are being used).
  •Existing asphalt is relatively thin (153mm or less), when using
   stabilizing additives.
  •Major cross-slope/profile grade corrections are not necessary.

FDR have three different processes:
  •Pulverization.
  •Mechanical Stabilization.
  •Chemical Stabilization.

  •Completely erases deep pavement crack patterns, thereby eliminating the
   potential of reflective cracking.
  •Pulverized layers along with stabilizing additives become a homogenous, well
   graded material with improved structural characteristics.
  •Conserves Energy-it is completed in-place and on grade so trucking and other
   material handling issues are eliminated or greatly reduced.
  •Also, no heating fuel is needed since it is a cold process.
  •Conserves Materials-existing pavement materials (stone and asphalt) are
   re-used, thus conserving limited resources.
  •Crown and cross-slope easily restored.
  •Loss of Curb Reveal is Eliminated.
  •Reflective CracksEliminated/Reduced.
  •Long-term CostEffective–the cause of pavement failure, weak bases,
   is addressed.
  •Environmentally Desirable–recycling in-place is much more efficient that
   hauling materials away allowing for shorter construction time and saves time.
  •Future Maintenance Costs are Reduced.

The old asphalt and base materials are pulverized, mixed with additives (if necessary) and compacted to produce a strong, durable base for either an asphalt or concrete surface.
The recycled base will be stronger, more uniform, and more moisture resistant than the original base, resulting in a long, low- maintenance life. And most important, recycling costs are normally at least 25% to 50% less than the removal and replacement of the old pavement.