Sa and Sons Construction Co., Inc.
Method of Infrared Restoration
**Infrared paving is an alternative method
of paving restoration, which eliminates the needs and costs associated with
conventional excavation methods.
1. The area must be swept clear of standing water, loose asphalt, and dirt.
2. It is very important that the infrared chamber is properly placed over the
repair. The area to be heated must be at least 6" beyond the
perimeter of the damaged area. It is important that a portion of the heated
area, along the perimeter, be left undisturbed. This will allow for a
thermal or heated bond between the repaired area and the existing blacktop.
3. As a general rule, it will take 8-12 minutes for the infrared heater to heat
the asphalt pavement to 325 degrees, softening it to a depth of 2" in 60
degree ambient weather temperature. Variables including ambient air
temperature, moisture, and the condition of the existing asphalt will affect
4. Once the heater is removed the damaged area must be squared off and
scarified. At least 1 ½" of asphalt depth should be disturbed and
the larger aggregate removed.
5. New asphalt will be added to the damaged area to replace the aggregate that
was removed. The new asphalt shall be spread evenly over the disturbed
area. It should be added in sufficient quantity to allow for a level
transition from the repaired area to the existing asphalt following compaction.
6. The patch should be rolled or compacted immediately after the new asphalt
has been raked evenly. A minimum of 2000 lb. per square inch of compaction
force shall be applied to the area. The rolling pattern should always
begin with the edges. Use approximately the outer two inches of the drum to
pinch the new asphalt to the existing pavement. After the edges are
sealed, the remainder of the patch can be rolled.