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Use of waste tires (crumb rubber) on Colorado highways.

File Language:
English


Details

  • Creators:
    Shuler, Scott
  • Corporate Creators:
    Colorado State University. Dept. of Construction Management
  • Corporate Contributors:
    United States. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
    CDOT-2014-12
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Colorado
  • Corporate Publisher:
    Colorado. Dept. of Transportation. Applied Research and Innovation Branch
  • Abstract:
    The objective of this study was to determine the feasibility of using waste tires (crumb rubber) in the ; construction of asphalt pavements in Colorado. Two pilot test sections and one control section were constructed ; and observed over a five-year period to meet this objective. The two pilot test sections were built using two ; crumb rubber modified (CRM) asphalt processes. One process uses ground tire rubber (GTR) blended with hot ; asphalt cement at the asphalt plant to form the hot mix asphalt. This is referred to as the Wet Process. The other ; process blends GTR and asphalt cement at a remote blending facility and is then transported to the hot mix plant ; to produce the hot mix asphalt. This process is the Terminal Blend method. In addition, a control section was ; constructed containing a conventional binder. Binders in the two test sections containing GTR and the control ; section met the specifications for PG 64-28 asphalt. Each of the three test sections contains approximately 1,000 ; tons of 2-inch asphalt overlay placed over a cold-milled surface in the eastbound driving lane of US 34 Bypass ; near Greeley, CO. Construction of the test and control sections occurred in the summer of 2009. ; The goal of this research project is to evaluate the performance of the crumb rubber test sections compared with ; the conventional control section and depending on performance, develop Colorado-specific materials and ; construction specifications for ground tire modified asphalt pavements. Also, the research project aims to ; develop guidelines and best management practices for the construction of ground tire modified asphalt ; pavements. Transverse cracking began in the rubber modified sections after 22 months of service and ; longitudinal cracking began after 29 months. The control sections have no transverse cracking to date with ; longitudinal cracking beginning to appear after 56 months.
  • Format:
    PDF
  • Funding:
    34.24
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/29109/dot_29109_DS1.pdf
  • File Type:
    Filetype[PDF - 4.81 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:dfbe456292135be4448a24f7dce47826e65b05238701e95066a0cb7a6da1c545
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