Ground Tire Rubber (GTR) as a Component Material in Concrete Mixtures for Paving Concrete, Phase 2

The objectives of this study are to: (1) develop a revised formal mix design of the ground rubber concrete (GTR) paving concrete, with optimal selection of components based on established criteria of strength, workability, and sustainability; (2) design an experiment (considering factors such as air content, water cement ratio, etc.) for varying the amount of superfine or fine aggregate size GTR in trial mixes of rubber concrete; (3) establish pretreatment procedures for the GTR particles and any other component of the rubber concrete; (4) conduct laboratory tests, with the conventional pavement concrete mix as a control, to study in the rubber concrete mix, the following: workability, air content, compressive strength, flexural strength, stress-strain relationships, Young's modulus of elasticity, shrinkage crack, impact resistance, and the coefficient of thermal expansion; (5) select the GTR best percentage content of the mix; (6) document experience and observations regarding mixing of rubber concrete in the laboratory, in terms of air content, water cement ratio, and the GTR's moisture content; (7) work with a paving concrete company and ready-mix plant as research partners to execute implementation of results from the laboratory experiments, in terms of the mix design and actually mixing at the ready plant; (8) identify and recommend methods for storing GTR at the ready mix plant and also methods for introducing the GTR into the ready-mix trucks; (9) perform a sustainability analysis of the GTR concrete, including a comparison with the conventional concrete mix, in terms of lifecycle costs; and (10) prepare a final comprehensive report documenting all results and recommendations in the form of specifications indicating range of mix parameters, strengths, shrinkage crack requirements, and coefficients of expansion.

  • Supplemental Notes:
    • This is a continuation of BDK83 TWO 977-22.


  • English


  • Status: Active
  • Funding: $52144.00
  • Contract Numbers:

    BDV30 977-08

  • Sponsor Organizations:

    Florida Department of Transportation

    Research Center
    605 Suwannee Street MS-30
    Tallahassee, FL  United States  32399-0450
  • Project Managers:

    Bergin, Michael

  • Performing Organizations:

    Florida State University, Tallahassee

    217 Westcott Building
    Tallahassee, FL  United States  32306-
  • Principal Investigators:

    Sobanjo, John

  • Start Date: 20140224
  • Expected Completion Date: 0
  • Actual Completion Date: 20140930
  • Source Data: RiP Project 36156

Subject/Index Terms

Filing Info

  • Accession Number: 01515926
  • Record Type: Research project
  • Source Agency: Florida Department of Transportation
  • Contract Numbers: BDV30 977-08
  • Files: RiP, STATEDOT
  • Created Date: Feb 26 2014 1:00AM