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Research Reports

Asphalt-Rubber Binder Stress Absorbing Membrane Interlayer: Wheeler I/C to Adams Co. Line, I-90


This is the final report of an evaluation of an Asphalt-Rubber Binder Stress Absorbing Membrane Interlayer (SAMI) to control transverse, alligator and longitudinal cracking in the asphalt concrete overlay.

A control section consisting of a tack coat of CSS-1 applied to the existing pavement was used to compare against the Asphalt-Rubber SAMI and a paving grade asphalt SAMI.

Crack mapping for a period of 9 years disclosed the Asphalt-Rubber SAMI to perform slightly better than the paving grade asphalt and much better than the control.


  • Date Published: July, 1987
  • Publication Number: WA-RD 128.1
  • Last Modified: August 30, 2007
  • Author: R.L. Schultz.
  • Originator: Washington (State). Dept. of Transportation.
  • # of Pages: 18 p., 253 KB (PDF)
  • Subject: Alligator cracking, Asphalt concrete, Asphalt rubber, Bituminous binders, Demonstration projects, Energy absorbing materials, Longitudinal cracking, Overlays (Pavements), Performance, Stresses, Transverse cracking.
  • Keywords: Asphalt-Rubber, SAMI, asphalt overlay, cracking, I-90, Grant County (Wash.)
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This abstract was last modified April 29, 2008