Recent initiatives in asphalt pavement design have produced a new approach to road building that could extend the design life of an asphalt pavement to 50 years or more—while improving safety and cutting both the time and cost of construction and maintenance.

Perpetual Pavements are asphalt pavements that use multiple layers of durable, recyclable asphalt. They stand up for decades under the steady punishment of heavy trucks. In addition, they provide a consistently safe and smooth roadway for parents driving minivans full of kids to soccer. When the surface layer needs repair, structural additions, or maintenance, it can be milled off for recycling and replaced in a timely and cost-effective manner. But the road structure never needs to be entirely removed and replaced.


点击浏览该文件