Patent ID: 8992118
Filing Date: 2015-03-31
Classification: C08L,C09D,C10C,E01C,G21K,H05B

Abstract:
1. A method for repairing an asphalt pavement, comprising: preparing a surface of a damaged asphalt pavement comprising aged asphalt by filling in deviations from a uniform surface plane with dry aggregate and compacting the dry aggregate; applying a reactive asphalt emulsion to the prepared surface, whereby the reactive emulsion penetrates into cracks and crevices in the damaged asphalt pavement and into areas filled with the dry aggregate, wherein the reactive asphalt emulsion comprises butyl rubber, a diene modified asphalt, and an environmentally hardened bioresin, and wherein the reactive asphalt emulsion contains no perfluorocarbons or less than 1% perfluorocarbons as volatile components; and passing an emitter over the prepared pavement, wherein the emitter generates electromagnetic radiation having a wavelength of from 2-5 mm the radiation penetrating into the pavement to a depth of at least 2 inches, wherein a temperature differential throughout a top two inches of pavement is 100° F. or less, wherein a highest temperature in the top two inches of pavement does not exceed 300° F., and wherein a minimum temperature in the top two inches of pavement is at least 200° F., whereby voids and interstices in the damaged pavement are disturbed without dehydrogenation of the asphalt, and whereby oligomers present in the aged asphalt are linked together into longer polymer chains, whereby ductility of the aged asphalt is improved.