Getting Smoothness and Density Just Right

Better Roads Staff - Nov 12, 2012

By Daniel C. Brown, Contributing Editor An Iowa-based contractor has won 80 percent of the available bonus payments on a successful 18-mile, two-lane asphalt paving project near Grinnell, Iowa. Manatts ran this paver at about 28 feet per minute, which helped ...

Asphalt Recycling Section

Better Roads Staff - Jul 03, 2012

Cold in L.A. CIR plus microsurfacing get the job done Cold-in-place recycling (CIR) followed by microsurfacing was not only a cost-effective treatment for Los Angeles County when it encountered unstable pavement conditions in one of its roads, but CIR was the perfect ...

Cracking Cold

Better Roads Staff - Feb 17, 2012

Solving the Riddle of RAP and Thermal Cracking By Tom Kuennen, Contributing Editor Use of reclaimed asphalt pavement (RAP) in hot-, warm- and cold-mix asphalt is growing dramatically, as tests validate its use in ever-increasing quantities. But there are fears that higher quantities ...

Asphalt Recycling Section

Better Roads Staff - Jul 07, 2011

Going Deep with Cold By Dan Brown, Contributing Editor How do you cold-recycle the top 6 inches of a 9-mile stretch of rural asphalt roadway for just $5 million? In several stages, says the Utah DOT. And they did just that this ...