Shear Resistance of Tire Derived Aggregate (TDA) Using Large-Scale Direct Shear Tests

This paper presents a large-scale direct shear testing of tire derived aggregate (TDA) of large sizes (25 to 75 mm). The objective of this research is to obtain and compare the shear resistances of large-sized TDA and TDA in contact with sand, concrete, and geosynthetics. TDAs are pieces of processed and shredded waste tires that can be used as lightweight and quick fills for embankments, subgrades, and retaining walls. A large-scale direct shear apparatus was designed and constructed. The shear box dimensions were 79 cm wide, 80 cm long, and 122 cm tall. The lower shear box was driven by a hydraulic piston, while the upper shear box remained stationary. The horizontal shear forces, shear displacements, and vertical forces were recorded by an automatic data acquisition system. Three normal loads were applied on the TDA to simulate overburden pressures of 24, 48, and 96 kPa (or 500, 1000, and 2000 lb/ft2). Duplicate tests wereperformed to verify the repeatability. The control tests using sand proved that the equipment can obtain comparable and slightly conservative shear strength. Mohr-Coulomb failure criterion wasused to obtain the cohesion (or adhesion) and friction angles of the TDA. The shear testing revealed the difference of failure mechanisms of TDA and sand. For TDA, no peak shear resistance was observed during the entire shearing, and shear resistance continued to increase until the test was terminated at sufficient shear displacement. Further analysis revealed the shear strength parameters of TDA increase with shear deformation; this is a challenge in selecting design parameters of TDA. The shear strengths of TDA and TDA in contact with other materials are primarily dictated by friction. The friction angles of TDA, TDA on sand, and TDA on concrete are very similar (in a range of 35° to 39°).

• Record URL:
  • https://doi.org/10.1061/(ASCE)MT.1943-5533.0001007
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08991561
• Supplemental Notes:
  • Copyright © 2013 American Society of Civil Engineers.
• Authors:
  • Xiao, Ming
  • Ledezma, Martin
  • Hartman, Corbin
• Publication Date: 2015-1

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Serial:
  • Journal of Materials in Civil Engineering
  • Volume: 27
  • Issue Number: 1
  • Publisher: American Society of Civil Engineers
  • ISSN: 0899-1561
  • EISSN: 1943-5533
  • Serial URL: http://ascelibrary.org/journal/jmcee7

Subject/Index Terms

• TRT Terms: Cohesion; Embankments and retaining walls; Fillers (Materials); Shear strength; Subgrade materials; Tires
• Uncontrolled Terms: Mohr-Coulomb failure criterion; Tire derived aggregates
• Subject Areas: Bridges and other structures; Highways; Materials; I24: Design of Bridges and Retaining Walls; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 01502463
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Dec 24 2013 7:47AM