As long as there is Asphalt, there will be a need to patch it. We were the 1st (and to our knowledge, still the only) company in Lexington to offer Infrared Patching technology.
Remove and Replace, C & R offers any and all forms of patch work.
This rehabilitation method is used for areas of severely damaged pavement that needs to be removed before the pavement is replaced or repaired. These areas should be saw cut at least one foot beyond the deteriorated and broken asphalt. The material should then be removed and the base should be restabilized. The depth of the removal will be determined by the traffic expected on that area of the pavement, and the condition of the existing sub base.
If the pavement failure is in the area of existing parking stalls, light duty repairs are probably called for.
Light duty repairs for car parking and light traffic require removal to a depth of approximately six inches, or until stabilized subsoil is reached. The new base should include three to four inches of aggregate that is compacted with a two-ton to four-ton roller. Small areas can be compacted with a plate compactor.
Once the new base cut is compacted, vertical saw cut surfaces should be cleaned, then tack oiled for adhesion. Then the area should be filled with roughly 2.5 inches of hot mix asphalt, which can then be compacted.
The finished patched surface should be 1/8″ above the surrounding pavement surface after compaction.
If the pavement repair is in an area that receives heavy truck traffic, it should receive a heavy duty repair. Heavy duty repairs should also be cut 1 foot beyond the deteriorated pavement. The area should be removed to a depth of approximately 10 inches or until a stable subsoil is reached. A new crushed stone base should be installed to a minimum depth of 6 inches.
This new base should be moist when placed and compacted using a roller with the static weight of not less than three tons. In severe cases 4 – 6 inches of concrete may be used in place of rock.
Vertical saw cut surfaces should be cleaned and tack coated as in the previous procedure, and 2.5 inches of a coarse binder asphalt, which serves as an intermediate layer between the aggregate and the surface layer, should be installed and compacted with a two-ton to a four-ton roller.
Once this intermediate layer is compacted, install two inches of a finer hot mix as a surface or wearing coarse; roll and compact. The final surface should be 1/8″ inch above the surrounding surface.
These specifications for light and heavy duty repairs are basic guidelines that are flexible. They are should be adjusted for the specific needs of the job.
A trucking terminal or the rear of a major shopping center, for example, might require eight inches of base, four inches of a coarser asphalt pavement, plus two inches of the finer hot mix for a wearing coarse.
In that case the initial hole would have to be 14 inches deep to accommodate the necessary base and asphalt pavement.