Fluctuating Temperatures Create Potholes: Different Methods of Pothole Repair
There are essentially two different pothole repair methods that are used in the City of Corner Brook.
Cold Mix Asphalt Patching -With cold patch asphalt repair, potholes are quickly filled in with already-mixed asphalt for a temporary fix in adverse conditions.
Hot Mix Asphalt Patching-With hot mix asphalt repair, the pavement around a pothole is excavated. Then, it is filled in and sealed with hot asphalt. This type of repair addresses underlying problems that caused the pothole and prevents more damage from occurring (as opposed to a cold patch is more of a surface-level fix). Hot mix repairs have a higher upfront cost, however they end up costing much less in the long run as no further repairs should be needed.
Reuse and Recycle Asphalt Reclaiming
The City of Corner Brook uses an Asphalt Reclaiming Process to reuse asphalt material, provide cost savings, and it is more environmentally friendly than asphalt disposal.
Asphalt Reclaiming is the process of reheating asphalt, plant mix, or properly stored plant mix that has not been compacted, back to its original temperature of 350 degrees F by means of a heat source in a static reclaimer.
1: When weather conditions are mild the City is able to use asphalt waste material (broken chunk, milling or RAP) by loading them with a bobcat into the hopper.
2. The hopper feeds the material to the drum, where the heat technology and tumbling action work to breakdown (recycle) the material into a viable hot mix.
3. Recycled asphalt hot mix is available within approximately 45 minutes.
4. The recycled hot mix can be discharged directly onto the repair site, or directly into a hot box or patching truck.
5. Recycled hot mix is continuously available until the repair is complete.
6. Normal techniques are used to place and compact the hot mix asphalt.
Youtube Video of the Process: https://youtu.be/Plb-CAmJSEI