초록 ▼

The invention here disclosed comprises a method and apparatus for rejuvenating an asphalt roadway surface resulting in up to approximately three inches of new repaved roadway surface produced at speeds of up to approximately twenty-two feet per minute. The method includes the steps of heating a top

The invention here disclosed comprises a method and apparatus for rejuvenating an asphalt roadway surface resulting in up to approximately three inches of new repaved roadway surface produced at speeds of up to approximately twenty-two feet per minute. The method includes the steps of heating a top layer of roadway, scarifying that heated layer, adding a recycling agent and thoroughly mixing and screeding the road surface to form a recycled material, adding new asphalt mix to the recycled material and milling the combination to form a mixed material and leaving a sub-layer plane in the roadbed. The mixed material is next conveyed away to a paving station located at the end of the process. During this conveying, the sub-layer left by the milling cut is heated, scarified, treated and worked in a manner similar to the treatment performed on the top layer of road surface. Finally, the mixed material is laid upon the now properly prepared sub-layer at a paving station and a new welded, monolithic, roadsurface is formed. The apparatus of the invention comprise means for performing the above described method steps and may be incorporated into a first vehicle having independent drive means and a second vehicle, also having independent drive means designed to follow first vehicle along the road surface being repaved.

대표청구항 ▼

A method of restoring an asphalt roadway comprising the steps of heating an upper layer of existing roadway, scarifying the heated existing roadway surface to a predetermined depth to obtain a broken, loosened road material, adding a recycling agent to the loosened road material, mixing and screedin

A method of restoring an asphalt roadway comprising the steps of heating an upper layer of existing roadway, scarifying the heated existing roadway surface to a predetermined depth to obtain a broken, loosened road material, adding a recycling agent to the loosened road material, mixing and screeding said loosened road material to form a recycled hot mix on the roadway, adding a new hot mix to said recycled mix in a heated condition, subjecting the recycled hot mix and the new hot mix to a milling action of predetermined depth to form a mixed material and leave a milling cut in the roadway, picking up and conveying the mixed material to a paving station, heating the part of the roadway that is at and below the aforesaid milling cut, scarifying said last-mentioned heated roadway part and combining the mixed material with the scarified roadway part at said paving station to form a new road surface.