A study has been conducted to evaluate the performance and behavior of a tire sidewall reinforced earth embankment. The fill material is an intermixture of clayey sandy silt. Instruments were installed and monitored to measure lateral soil pressure, stress in the connecting elements of the tire mat system, elongation of the sidewalls, movement of the soil within the fill mass and sidewalls, settlements, and lateral movements of the embankment with respect to depth. Laboratory pull-out tests conducted on a buried sidewall and clip are reported. A year after the completion of the embankment, a local slope failure occurred. Reasons for the failure are discussed, and the repair of the slope is described. Evidence is presented to show that, despite the slope failure, the proposed design procedures in this report are suitable and practical for this tire sidewall reinforced embankment. The apparent coefficient of friction between the soil and sidewall surfaces was found to be about 0.36 from a pull-out test in our laboratory. The embankment was observed to behave as an integral mass. The soil could not be compacted at the slope and a wire mesh was effective in retaining the soil during compaction. The calculated stresses based on the suggested design procedures did not agree with measured data because of slack and discontinuity in the tire/clip system. (FHWA)

  • Supplemental Notes:
    • The study was conducted in cooperation with the Department of Transportation, Federal Highway Administration.
  • Corporate Authors:

    California Department of Transportation

    Transportation Laboratory
    5900 Folsom Boulevard
    Sacramento, CA  United States  95819
  • Authors:
    • Yee, W S
  • Publication Date: 1979-11

Media Info

  • Pagination: 110 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00319129
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-CA-TL-79-22 Final Rpt., FCP 44C1-033
  • Contract Numbers: D-3-44
  • Created Date: Nov 19 1980 12:00AM