Here is a machine that I have seen in action on the road that goes by my house, a couple of years ago. The machine has very heavy cutting blades underneath that digs up the old asphalt as it creeps along and pulverizes it, along with the gravel and dirt foundation below the asphalt.
As it moves along it deposits the pulverised material behind it which is then graded, and then packed back down with rollers. After that, new asphalt is laid directly down over the pack..and voila..you have a new road.
This machine makes it unnecessary to transport the old asphalt material away from the site. ie: The old asphalt is Re-Cycled on the spot and used again as the foundation for the new road.
NB
(Click on the picture on the site to make it bigger.)
http://www.directindustry.com/prod/r...70-386748.html