Shearing Behavior of Interfaces between Tire-Derived Aggregate and Three Soil Materials

I. Ghaaowd, P. J. Fox, J. S. McCartney

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


When tire derived aggregate (TDA) is used as a lightweight monolithic fill in civil engineering applications, such as embankments and retaining walls, the shearing behavior of TDA-interfaces with different materials should be carefully considered. This paper presents results from large-scale direct shear tests performed on interfaces between Type B TDA and layers of sand, aggregate, and clay for initial normal stress ranging from 19.0 to 76.7 kPa. To match field conditions, a separation nonwoven geotextile was used at the TDA-sand and TDA-clay interfaces, and a separation woven geotextile was used at the TDA-aggregate interface. Large shear displacements, typically between 200 and 350 mm, were required to fully mobilize the secant friction angle. Peak secant interface friction angles range from 26° to 32°, and peak strength envelopes are linear for the sand interface and nonlinear for the aggregate and clay interfaces. Failure envelopes for the TDA-soil interfaces are bounded above by the Type B TDA internal failure envelope and below by the Type B TDA-concrete interface failure envelope. A pair of replicate tests using woven and nonwoven geotextiles for the TDA-aggregate interface indicated that geotextile type had little effect on measured shear behavior as they only provide separation.

Original languageEnglish (US)
Article number04020120
JournalJournal of Materials in Civil Engineering
Issue number6
StatePublished - Jun 1 2020

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science
  • Mechanics of Materials


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