Cold In-Place Asphalt Reclamation
Traditional, asphalt-based road re-construction processes are simple yet wasteful: The most cost effective asphalt application is known as an “overlay.” This is a process of putting new asphalt down on top of the bad, failing asphalt. It’s considered a low-cost, quick fix and provides the newly paved look that drivers are seeking. It is however, a BandAid because the problems beneath will quickly rise to the surface. The 2nd most traditional asphalt application is known as “remove and replace or R&R.” As the name implies, this process involves removing (milling out) the existing asphalt and replacing it will new asphalt. Although a better option for longer lasting pavement than an Overlay, there are two primary reasons why R&R is both wasteful and inefficient:
- Asphalt millings (pulverized asphalt) are a relatively high-grade material if properly recycled.. Just because a surface is cracked up and degrading, doesn’t mean that the material itself can’t be rehabilitated and reused. The cost and time needed to mill out and remove/dispose of the failing asphalt is significant.
- This approach doesn’t address the root cause of the asphalt failure…. problems with the base. Rather than addressing these issues at the base, “R&R” is simply a short term solution to long term problems the will result in required maintenance early in the roads life cycle.
- Completely eliminate or otherwise reduce the wasteful costs and time associated with removing and disposing of the failing asphalt.
- Address failures at the base by integrating the asphalt millings (a high-quality material) into the base at a 1 to 1 ratio. Meaning, if there are 3’’ of asphalt, the reclaimer will pulverize a total 6’’.