A pothole is a depression in a road surface, usually asphalt pavement, where traffic has removed broken pieces of the pavement. It is usually the result of water in the underlying soil structure and traffic passing over the affected area.
source/image: Victoria Texas Videos
Water first weakens the underlying soil; traffic then fatigues and breaks the poorly supported asphalt surface in the affected area. Continued traffic action ejects both asphalt and the underlying soil material to create a hole in the pavement.//wikipedia
How to Fix a Pothole:Just like the causes of a pothole, there are a few different means to fix them.Spray-injection Repair:The spray-injection repair method involves specialized equipment. Using the spray-injection device, all water and debris is blown out of the pothole. Then a layer of tack coat binder is applied to the bottom and sides of the hole. Next asphalt and aggregate are blown into the hole and then another layer of aggregate covers the patched area. For the spray-injection method, no compacting is needed after its been placed.
Semi-Permanent Repair:The semi-permanent method is one of the best there is. You’ll remove all the debris and water from the pothole, just like the spray-injection method. Then the pothole area will need to be prepared for patching. That means clean cuts along each side to ensure that each is a sound piece of pavement. If there are any weaknesses here they will just create another point for a pothole to develop. Then, using your cold or hot patch mix, fill up the hole and compact.//sunriseasphaltaz