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Placement of Three-Quarter Inch Dowels in MnROAD Concrete Test Cell 2437 and Deployment in Interstate Highway 35 in Hinckley Minnesota

File Language:
English


Details

  • Creators:
    Izevbekhai, Bernard Igbafen
  • Corporate Creators:
    Minnesota. Department of Transportation. Office of Materials and Road Research
  • Subject/TRT Terms:
  • Publication/ Report Number:
    2026-01
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    United States
  • Edition:
    Final Report: 2024-2025
  • Corporate Publisher:
    Minnesota. Department of Transportation. Office of Research & Innovation
  • Abstract:
    This research report examines the dowel placement initial testing and initial test results of the ¾ dowels at the MnROAD facility and in the test sections on Interstate 35 at Hinckley. A 36 ft by 12 ft test section was constructed on November 22, 2024, when the ambient temperature was approximately 35°F. The test cell MnROAD low volume road cell 2437 was instrumented with vibrating wire strain gauges, thermistors, and maturity sensors to monitor strength development and performance. In this initiative, three-quarter inch-inch dowels were placed in interior joints of the test cell to evaluate reduced-diameter dowels' effectiveness for sustainable pavement applications. Analytic predictions of the influence of smaller diameter dowels were complicated by paucity of tenable equations from which test results could have been validated. Nevertheless, the sections were subjected to initial monitoring including faulting falling weigh deflectometer and physical observations. The report recommends seasonal measurements for at least 5 years. At this stage there was no measurable faulting in either test section. Preliminary data indicated high load transfer efficiency (LTE) exceeding 90% at MnROAD, higher than corresponding field tests conducted on Interstate 35 in Hinckley, MN, which showed lower LTE values.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:f519c780345be547b78da9527585b8a793955c86215b7db7d25050ec671701dac0739a2f50f96c92fcb23fecb7e1616bc2550a6caf39a89001df9b026fe06ae0
  • Download URL:
  • File Type:
    Filetype[PDF - 1.63 MB ]
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