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CP-2 is an extremely flexible base course that can be used for new construction of existing gravel roads or over existing, but severely deteriorated roadways. The material is designed to provide a flexible base course material on low ADT roads—roads where a rigid Hot Mix can not be successfully used.

The roadway is re-profiled by a paver placing #57 aggregate at an average depth of 2 inches, followed by penetrating the aggregate with 1.50 Gals/SY with a soft asphalt emulsion. An application of #8 aggregate is applied to choke in the #57s. Typically, a CP-2 Bituminous Binder Course is then followed by a Double Chip Seal which waterproofs the binder and provides an inexpensive flexible wearing surface.

CP-2 has been successfully used since the 1960s. The process continues to gaining popularity as budgets shrink and costs rise. CP-2 is an extremely cost effective, long term solution for low volume roads.

The open textured base course allows water to pass laterally through the bottom layer of the CP-2 without fear of frost damage due to the high air void and asphalt content of the material. For this reason, it can be used for roadways which exhibit poor drainage.


  • Most flexible paving system available for low ADT roads
  • Requires very little base preparation, as material “bridges” the problem areas of the roadway
  • Able to be placed on roads where the only other option would be total reconstruction
  • Extremely cost effective when compared to the alternative of total reconstruction
  • Process works extremely well in areas with poor drainage
  • Environmentally friendly “green” paving material requiring no heating of aggregate

Download the AMS Pavement Preservation Brochure.
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AMS Location

Asphalt Maintenance Solutions, LLC.
188 Jefferson Street
Emmaus PA 18049
Phone: 610.797.2645
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