Patent ID: 9551117
Date: 2017-01-24
CPC Classifications: C08L,C09D,C10C,E01C,G21K,H05B

Claim:
1. A method for repairing an asphalt pavement, comprising: passing an emitter over an asphalt pavement comprising asphalt that is aged, wherein the emitter generates electromagnetic radiation having a wavelength of from 20 nm to 2 mm, the radiation penetrating into the asphalt pavement to a depth of at least 2 inches, wherein a temperature differential throughout a top two inches of asphalt pavement is 100° F. or less, wherein a highest temperature in the top two inches of asphalt pavement does not exceed 300° F., and wherein a minimum temperature in the top two inches of asphalt pavement is at least 200° F., whereby voids and interstices in the asphalt pavement are disturbed without dehydrogenation of the asphalt, and whereby oligomers present in the asphalt are linked together into longer polymer chains, whereby ductility of the asphalt is improved.