Asphalt or Blacktop Repair Issues

Published: 16th February 2010
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The most common visible asphalt problems are age, alligator cracking, raveling and potholes. Asphalt by nature will break down. Water, heavy loads and time all affect the appearance of asphalt. It becomes dry, cracked, and crumbly.



Polyurethane materials are the best asphalt repair products to restore asphalt damage. As asphalt ages and oxidizes, it becomes more gray. This chemical changes makes the asphalt more brittle and subject to cracking. It is best to catch the cracks while they are still hairline cracks. If not caught in time, hairline cracks grow and increase turning into alligator cracking. This alligatoring can be stopped with the right asphalt crack repair.



The next step in the process of degradation is raveling. When the binder in asphalt begins to wash away, the surface becomes deeply pitted. Asphalt repair at this point is essential. If not properly fixed, the next stage may have to be to remove and replace the damaged asphalt.



Cracks can erode, allowing water into the sub-base and weakening the foundation of the road or driveway. More water enters the asphalt and vehicles compress the damaged asphalt and mud will pump up through the cracks. This is the last stage of failure as the asphalt breaks into small pieces and starts to crumble away, forming a pothole.



Repairing Hairline Cracks

Sealing smaller asphalt cracks can be done simply using Concrete Welder for asphalt crack repair, available in a cartridge format. Make sure the crack is clean and free of moisture. Use a broom or blower to clean out any loose materials. Open cartridge and squeeze Concrete Welder directly into the crack. Use a scraper or straight-edge to smooth the material out. Wipe up any excess material and allow to dry for 30 minutes. Now the crack is filled and ready for use.



Fixing Alligator Cracks

To begin, use a scarifier on alligatored asphalt repair. This will bring out fresh asphalt that is clear of any oils and/or chemicals and promote adhesion between FloMix and the asphalt. Next, sweep or blow out cracks so there is no dust or loose rocks. If you encounter water or any kind of moisture, you will need to use a torch and burn it all out. If the appearance of the repair is critical, make sure to mask out the area with duck tape.



Remove all contents from bucket. Using FloMix bottle "a", carefully pour contents into provided 5-gallon bucket then add special sand. Next, shake bottle "b" thoroughly and pour into sand mixture. Mix with a paddle-mixer, using a drill. When mixture is completely wet, pour FloMix onto cracked asphalt and use a trowel or lute to smooth material into cracks. (In colder months or when there is little time for the repair, catalyst can be supplied as an additive to speed the reaction.) Remove tape and feather edges to existing asphalt. When asphalt repair is smooth, sprinkle topping sand over repaired area to create surface traction. Allow material to cure for about an hour and then sweep or blow any excess topping sand.



Asphalt Pothole Repair

To repair an asphalt pothole, use Roklin's FloMix asphalt repair product. First ensure that the damaged area is clean and dry. Sweep or blow out cracks so there is no loose debris. If needed, use a torch to dry up any existing water. Place the aggregate provided in the FloMix package to fill in some of the asphalt pothole, without going above the damaged area. Using FloMix, carefully pour contents of bottle "a" into provided 5-gallon bucket then add special sand. Next, shake bottle "b" thoroughly and pour into sand mixture. Mix with a paddle-mixer, using a drill.



When mixture is completely wet, pour FloMix onto asphalt pothole and use a trowel or lute to smooth material into cracks. When damaged area becomes sufficiently smooth, toss topping sand by hand over repaired area to create a uniform look and feel. The new FloMix asphalt repair can be ready for traffic in less than an hour.



FloMix and Concrete Welder are available for purchase through the Roklin web site at www.roklinsystems.com or call 1-888-FlexSet. Other Asphalt and asphalt repair products for large and small repairs are also available.

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