Research has shown that asphalt-rubber, when placed as a seal coat, controls reflection of fatigue cracks and is an effective alternate to a major overlay or reconstruction. When used as an interlayer, the membrane effectively controls reflection of all cracks. A seal-coat job is described in which special distributor trucks heading a paving train put down 175 tons of asphalt rubber in one day. The stress-absorbing material consisted of a No. 16 to 25-mech ground tire rubber reacted with asphalt and cut back kerosene. The asphalt rubber requires more application time than a regualr seal coat, and strict adherence to specifications is critical for successful placement. The use of this matirial represents savings in asphalt, aggregate, and energy costs. The asphalt-rubber has been used as a water-barrier on bridge decks. Other potential applications include: membrane encapsulated subgrades; control of expansive clay subgrades under existing highways; and as a thin overlay for renewing rideability and skid resistance on portland cement concrete pavement.

  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Publication Date: 0

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Filing Info

  • Accession Number: 00163690
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 7 1978 12:00AM