SAND REINFORCED WITH SHREDDED WASTE TIRES

The authors investigate the feasibility of using shredded waste tires to reinforce sand. Direct shear tests were performed on dry sand and shredded waste tire mixtures. To understand their influence on shear strength, the following factors were examined: normal stress, sand matrix unit weight, shred content, shred length, and shred orientation. Test results suggest that three significant factors affect shear strength: normal stress, shred content, and sand matrix unit weight. A model for predicting the strength of reinforced soils was also assessed to determine its applicability to mixtures of sand and tire shreds. When the model is calibrated using data from one shred content, it may be useful for estimating the friction angle for other shred contents. The addition of shredded tires increased the shear strength of sand in all cases, obtaining an apparent friction angle as large as 67 deg. Shred content and sand matrix unit weight were the most significant features of the mixes that impacted shear strength. Increasing either of these variables resulted in an increase in friction angle. Tests were also performed on samples composed of only shredded tires. The friction angle obtained was 30 deg.

Language

  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 760-767
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00726913
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Oct 3 1996 12:00AM