Use of Whole Tires and Fly Ash in Earth Retaining Structures

Details

• Creators:
  Jayawickrama, Priyantha W. ; Hossain, M. Shabbir ; Retterer, Taya A.
• Corporate Creators:
  Texas Tech University, Lubbock.. Center for Multidisciplinary Research in Transportation
• Corporate Contributors:
  Texas Department of Transportation
• Subject/TRT Terms:
  Asphalt Mixtures Dynamic Stability Earth Earth Retaining Structures Fly Ash Scrap Scrap Tires Structures Tire Bales Tires Used Tires Waste Disposal Waste Products (Materials)

  More +
• Publication/ Report Number:
  TXl99/1876-1R
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Corporate Publisher:
  Texas Tech University. Center for Multidisciplinary Research in Transportation
• Abstract:
  Finding secondary applications for used automobile tires has become a major issue because of the unique problems associated with their disposal. The vast majority of these secondary applications involve the use of waste tires in shredded form. Examples include Tire Derived Fuel (TDF) that recover energy through combustion of shredded tires, crumb rubber as a modifier for asphalt binder and asphalt concrete mix, and shredded tire as a lightweight fill material. This research examined the potential use of whole waste tires in the construction of earth retaining structures. Several retaining wall designs that incorporate waste tire as a basic structural unit are proposed. The proposed retaining wall designs involve the use of whole waste tires in a number of different forms. They are (1) whole tires filled with gravel or low strength flowable filler, (2) tires bales that are produced by compressing as many as 100 automobile tires to form a 30in x 50 in x 60 inch blocks and (3) tire bales encapsulated in a concrete casing to produce 4 ft x 4 ft x 8 ft block called Eco-BloC®. The proposed designs include gravity retaining 'walls as well as mechanically stabilized earth (MSE) retaining walls. Necessary analyses have been performed to ensure adequate factor of safety against internal failure as well as external failure of the retaining wall systems. The internal stability conditions that were considered included the following: (a) rupture of the reinforcement, (b) reinforcement pullout and © bulging of the wall. The externals stability conditions included: (a) sliding, (b) bearing failure, (c) overturning, and (d) global rotational stability. The analyses have been repeated for a range of wall heights, wall batter and backfill material properties to produce design charts.
• Format:
  PDF
• Funding:
  0-1876
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:7045833d825e2128e7bfb6ce12b36d0b446bc3f21fc13a9dc72f9f1fcab4177a2ce0139633f790c40de4d2a7d9861aef073411c495df006b0a1db6e8c6ff3a9c
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86440/dot_86440_DS1.pdf
• File Type:
  [PDF - 2.03 MB ]