If Asphalt is repaired correctly as soon as problems arise, the extent of the repair and total cost can be minimized. Early detection, determining the root cause, and taking action will dramatically lengthen the life cycle of asphalt pavement. Choosing which corrective action to take will depend on several factors, including total affected area, size of individual failures, severity, location, root cause, and owner’s preference.
Thermal Bond Asphalt Repair
Thermally bonded asphalt repair is a process that recycles asphalt in place, returning pavement to its original condition before damage occurred. A 4’X6’ Pothole can be repaired in less than 30 minutes. The result is a seamless repair with a homogenous bond between new and existing asphalt. The economics of thermal bond asphalt repairs lends itself well to smaller patches spread out over large areas or long distances. The process requires fewer materials, equipment, and manpower than any other method. This green solution can be performed in less time with less cost.
The following steps describe the thermal bond repair process:
1) The area of asphalt to be repaired is marked out with paint.
2) Loose debris is removed with a gas-powered blower and a stiff broom.
3) Specialized heating equipment is positioned over the damaged asphalt. Within 5-10 minutes, the asphalt’s temperature reaches 325 degrees, which is the same temperature at which it was originally paved.
4) At 325 degrees, the asphalt has the same characteristics as fresh hot mix. With an asphalt rake, the pavement is scarified to a depth of 2” minimum.
5) The scarified asphalt is sprayed with Cyclogen® to restore flexibility and strength.
6) Fresh mix is than added and leveled to raise the grade if required.
7) The hot asphalt is compacted starting with the perimeter to ensure a smooth transition, followed by compaction of the entire patched surface.
Remove and Replace
For large areas the best method of repair is to remove and replace damaged asphalt. If the root cause is determined to be hydraulic pressure due to poor drainage, portions of pavement will need to be removed to allow proper subsurface drainage to be installed. If base failures have occurred, asphalt removal and replacement will be necessary to repair the base.
The following steps describe the remove-and-replace process:
1) The area to be repaired is marked out with paint.
2) The perimeter of the failure is saw-cut to create a clean vertical wall.
3) All damaged asphalt is excavated and disposed of.
4) A tack coat is than applied to the sides of the excavated area to increase adhesion and prevent water penetration.
5) Asphalt is placed above surrounding asphalt, compacted flush for a smooth transition.
Asphalt failures can develop quickly for many reasons, resulting in hazardous pavement conditions. Uneven surfaces and potholes can put pedestrians and motorists in danger. To reduce our customers’ liability, we offer a 24-hour repair service to correct unexpected situations that develop. Temporary repairs may be required using cold mix until a permanent repair is performed. This type of repair may be considered for those with a limited budget until appropriate funds are available.
Quality concrete pavement can provide a long service life with minimal maintenance. As with all pavements, concrete requires a solid dry base for optimal performance. If the concrete surface is severely cracked, the best solution is replacing damaged sections. Replacing cracked concrete will stop surface water from entering the base and subgrade and preventing failures from spreading.