MINNESOTA HEAT-TRANSFER METHOD FOR RECYCLING BITUMINOUS PAVEMENT.

A method for hot-mix-recycling of in-place bituminous pavement that was developed for use on a roadway project in Maplewood, Minnesota, is described. An urban four-lane street was reconstructed to a four-lane divided roadway with turn lanes and transit bus turnouts. The bituminous material was salvaged and recycled along with the upper 0. 33 m of gravel base. The old material was scarified, picked up, and hauled to the mixing plant where it was run through a normal three-crusher plant (one jaw and two rolls) and stockpiled. The upper 0. 33 m of gravel base was loaded off the roadway, hauled to the plant site, and stockpiled.