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Pavement repair system utilizing solid phase autoregenerative cohesion

  • US 9,481,967 B2
  • Filed: 06/05/2015
  • Issued: 11/01/2016
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A method for repairing an asphalt pavement, comprising:

  • passing an emitter over a surface of a damaged asphalt pavement comprising aged asphalt, wherein the emitter comprises a birefringent material through which electromagnetic radiation generated by the emitter passes, wherein the emitter generates electromagnetic radiation having a wavelength of from about 2 microns to 1 millimeter, 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.

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