Table 4-6. Types of Overall Repair for Jointed Concrete and Asphalt-Surfaced Pavements.
Table 4-6. Types of Overall Repair for Jointed Concrete and Asphalt-
1. Overlay with unbonded, partially bonded, or fully bonded Portland cement concrete (rigid overlay).
2. Overlay with all-bituminous or flexible overlay (nonrigid overlay).
3. Portland cement concrete pavement recycling* -a process by which an existing Portland cement concrete
pavement is processed into aggregate and sand sizes, then used in place of, or in some instance with additions of
conventional aggregates and sand, into a new mix and placed as a new Portland cement concrete pavement.
4. Pulverize existing surface in place, compact with heavy rollers, place aggregate on top, and overlay.
5. Replace keel section, i.e., remove central portion of pavement section (subjected to much higher
percentage of traffic coverages than rest of pavement width) and replace with new pavement structure.
6. Reconstruct by removing existing pavement structure and replacing with a new one.
7. Grind off thin layer of surface if predominant distress is scaling or other surface aistresses; overlay may or
may not be applied.
8. Groove surface if poor skid resistance/hydroplaning potential, is the main reason for overall M&R.
Asphaltor Tar-Surfaced Pavements
1. Overlay with all-bituminous or flexible overlay.
2. Overlay with Portland cement concrete (rigid overlay).
3. Hot-mix asphalt pavement recycling* -one of several methods where the major portion of the existing
pavement structure (including in some cases, the underlying untreated base material) is removed, sized, and mixed hot
with added asphalt cement at a central plant. Process may also include the addition of new aggregate and/or a softening
agent. The finished product is a hot-mix asphalt base, binder surface course.
4. Cold-mix asphalt pavement recycling**-one of several methods where the entire existing pavement
structure (including, in some cases, the underlying untreated base material) is processed in place or removed and
processed at a central plant. The materials are mixed cold and can be reused as an aggregate base, or asphalt and/or
other materials can be added during mixing to provide a higher-strength base. This process requires use of an asphalt
surface course or surface seal coat.
5. Asphalt pavement surface recycling* -one of several methods where the surface of an existing asphalt
pavement is planed, milled, or heated in place. In the latter case, the pavement may be scarified, remixed, relaid, and
rolled. In addition, asphalts, softening agents, minimal amounts of new asphalt hot-mix, aggregates, or combinations of
these may be added to obtain desirable mixture and surface characteristics. The finished product may be used as the
final surface, or may, in some instances, be overlaid with an asphalt surface course.
6. Apply a porous friction course to restore skid resistance and eliminate hydroplaning potential.
7. Replace keel section, i.e., remove central portion of pavement feature (subjected to much higher
percentage of traffic coverage than rest of pavement width) and replace with new pavement structure.
8. Reconstruct by removing existing pavement structure and replacing with a new one.
* Federal Highway Administration, Initiation of National Experimental and Evaluation Program (NEEP) Project No. 22,
Pavement Recycling ([FHWA] Notice N 5080.64 June 3, 1977).
** Federal Highway Administration Initiation of National Experimental Evaluation Program (NEEP) Project No.
Pavement Recycling (LFHWA] Notice N 5080.64 June 3, 1977).