Keeping the bean counters happy
On Edgewood Drive, the village saved more than $24,000 in material costs by replacing the old pavement (6 inches of asphalt over a 6-inch stone base) with RCC. The new pavement is 4 inches stone, 6 inches RCC ($58,400) topped with a 2-inch hot-mix asphalt overlay ($23,800). Saw cutting and control joint sealing are contracted out ($3,800), for a project total of $86,000. By comparison, new asphalt streets are required to have a 7-inch hot-mix asphalt base, 1.5-inch binder, and 1.5-inch surface layer for a total of $110,400.
“After seeing the money we’ve been able to save by using material that’s equivalent or maybe superior quality to what we’ve done before,” says Mann, “the board and mayor keep asking ‘Where else can we use this?’” So far the village has reconstructed one residential street a year, but Mann wouldn’t hesitate to use RCC on any village street if the need arises.
What began as an experiment to save money has become an investment in the long-term quality of Streamwood’s streets. Adaska applauds the department’s efforts, adding, “Unfortunately, many cities are still building thin, inadequate streets, but Streamwood is investing in the longevity of its roads by building strong and durable pavement.”
Due to the rapid growth of RCC and increasing interest from public agencies, the newly created RCC Pavements Promotional and Research Council was formed in January 2014. The council is composed of contractors, equipment manufacturers, materials suppliers, and concrete producers. Its goal is to provide education, marketing, and research on RCC to improve and expand its uses. Public works officials interested in learning more about this group should contact Wayne Adaska (firstname.lastname@example.org).
For information on RCC, contact: Matt Mann (email@example.com), Randell Riley (firstname.lastname@example.org), and Theron Tobolski (email@example.com).
Shelby O. Mitchell is a Berwyn, Ill.-based editor and freelance writer, and a former senior editor of PW. E-mail firstname.lastname@example.org.