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 heating time.

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.