Cement
"After attempts to stabilize the roadway with other materials failed, the contractors turned to Portland Cement to save the three-state-long NATCHEZ TRACE PARKWAY......"
excerpt from "Cement Saves National Parkway" at www.recyclingroads.org

Foamed Asphalt
"While the process has been around since 1956, recent advances in equipment types have catapulted foamed asphalt to the top of more State DOT official wishlists.With users such as CALTRAN, MEDOT, AlaskaDOT, and the FHWA getting involved, many cities/counties across America are discovering the benefits,and contractors are struggling to keep up with the demand. A course on this technology is being planned in the near future."
excerpt from "Foamed Asphalt Stabilization is Expanding" at www.dot.state.ga.us

Expanded Asphalt
"Forsyth County saved tax dollars by using expanded asphalt base stabilization on project."
an article published in Better Roads Magazine, see www.betterroads.com