Additive for reclamation of asphalt, reclaimed asphalt pavement material containing same, modified asphalt, and asphalt pavement material containing same

Abstract

An additive for reclaiming asphalt of the present invention, which is obtained by adding straight asphalt to a mixture of a waste animal or vegetable oil and a waste mineral oil having a kinematic viscosity at 60° C. of 10 mm 2 /s to 40 mm 2 /s, mixing the materials, and heating the resultant mixture to remove an aromatic component. The additive for reclaiming asphalt can restore the physical properties of a deteriorated asphalt component to the same or greater extent than that of a conventional additive for reclaiming asphalt, and the additive has low content of components that may affect the environment or humans, and high fluidity at room temperature, and is available at an extremely low cost.

1 . An additive for reclaiming asphalt, obtained by
 adding straight asphalt to a mixture of a waste animal or vegetable oil and a waste mineral oil having a kinematic viscosity at 60° C. of 10 mm 2 /s to 40 mm 2 /s,   mixing the materials, and   heating the resultant mixture to remove an aromatic component.   
     
     
         2 . A reclaimed asphalt pavement material, comprising the additive for reclaiming asphalt according to  claim 1  added to an asphalt pavement waste or a mixture of a fresh aggregate and an asphalt pavement waste. 
     
     
         3 . A modified asphalt, obtained by
 adding, to molten straight asphalt, a xerogel-like amorphous resin, which is obtained by dissolving an amorphous resin with an organic solvent capable of dissolving the amorphous resin to provide a gel- or dough-like amorphous resin in a saturated state, immersing the resin in alcohol to remove the organic solvent, and drying the remainder, together with a waste animal or vegetable oil, and   mixing the materials.   
     
     
         4 . A modified asphalt, obtained by
 adding, to molten straight asphalt, a product, which is obtained by dissolving an amorphous resin with an organic solvent capable of dissolving the amorphous resin to provide a gel- or dough-like amorphous resin in a saturated state, and heating the resin to melt the resin, together with a waste animal or vegetable oil, and   mixing the materials,   wherein a content of the gel- or dough-like amorphous resin in the modified asphalt is 70 wt % to 90 wt %.   
     
     
         5 . An asphalt pavement material, comprising the modified asphalt according to  claim 3  added to a fresh aggregate, an asphalt pavement waste, or a mixture of a fresh aggregate and an asphalt pavement waste. 
     
     
         6 . An asphalt pavement material, comprising the modified asphalt according to  claim 4  added to a fresh aggregate, an asphalt pavement waste, or a mixture of a fresh aggregate and an asphalt pavement waste.