Improving Geotechnical Behavior of Clayey Soils with Shredded Rubber Tires—Preliminary Study

Each year approximately 1.1 tires are discarded per person in the United States totaling approximately 300 million tires. However, rubber tires are not biodegradable, and they occupy a large portion of available landfill space. Moreover, landfill spaces are becoming scarce. In addition, rubber tires that are not properly disposed of contribute significantly to fire hazards. Thus, an increasing demand exists to find innovative techniques to dispose of or reuse discarded rubber tires. The geotechnical engineering community has been working extensively on incorporating rubber tires into various applications including roadway or highway pavements and the backfill of retaining walls. In these applications, the rubber tire has been used as an individual material. However, rubber tires may be used in soil-modification projects to improve the desirable qualities of compacted soils. Some benefits besides the geotechnical advantages include lower construction costs, environmental sustainability, and the decreased necessity of importing and exporting soil. In this study, used shredded rubber tires at different sizes were obtained and used to modify clayey soils. The compaction, permeability, and shear strength characteristics of the modified soils were determined. The results showed that the addition of approximately 8% shredded tire with 0.5-0.178 mm size could increase the permeability of the soil mass. However, when 8% shredded tire of 1.40-3.35 mm size was added to the soil mass, the permeability was found to decrease. Significant improvements were noted in the shear strength and the coefficient of consolidation when approximately 6% shredded rubber tire was added to the soil mass.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 3734-3743
  • Monograph Title: Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability

Subject/Index Terms

Filing Info

  • Accession Number: 01522487
  • Record Type: Publication
  • ISBN: 9780784413272
  • Files: TRIS, ASCE
  • Created Date: Mar 25 2014 3:08PM