se swelling in the rubber particles. He developed the first time/temperature formula. There are many different names for this process with the most common name being the "wet" process. Other names for it are the McDonald process, and the "Arizona" process. Tests were done on this new product and found that it performed well enough that they began to construct roads with it. They also found through the tests that the rubberized asphalt was more resistant to bleeding in hot weather, and it was also more resistant to reflective cracking in cold weather. Bleeding occurs when there is excessive binder content, heavy tack coat, excessive aggregate fines, rounded aggregates, or improper air void content. Reflective cracks from the existing pavement are hard to and very difficult to prevent. With rubberized membrane interlayer or rubberized asphalt will minimize reflective cracking.
Rubberized asphalt is asphalt that is combined with rubber from waste tires. There are three different ways that the rubber from the tires can be added. The three different ways are the wet process, the dry process, and the terminal blend process. The differences between the three processes are that in the wet process, the rubber is added to the asphalt before adding to the resulting binder to the aggregates. In the dry process, the rubber is added with the aggregates before the asphalt. In the wet process, special equipment is needed to mix the rubber and the asphalt together before adding the aggregates. In the dry process, the rubber, asphalt, and the aggregates are mixed together without the special equipment needed from the wet process. In the terminal blend process, the asphalt is blended with the rubber at the refinery. This process does not use as much crumb rubber as the other two and uses about half of what the other processes use when making rubberized asphalt. The wet process has so far proved to be the most cost ...