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i

Study and Evaluation of Materials Response in Hot Mix Asphalt Based on Field Instrumentation (Phase I)

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  • Creators:
  • Corporate Creators:
    University of New Mexico, Albuquerque. Department of Civil Engineering
  • Corporate Contributors:
  • Subject/TRT Terms:
  • Publication/ Report Number:
    NM11MSC-03
  • Resource Type:
    Tech Report
  • Geographical Coverage:
  • Edition:
    June 2011 – May 2015
  • Corporate Publisher:
    New Mexico. Department of Transportation
  • Abstract:
    The recently developed AASHTOWare Pavement Mechanistic-Empirical (ME) Design Guide uses mechanistic properties of pavement materials, local climate, and traffic loading to determine stress-strain at different layers of pavements. Though the Pavement ME has not been calibrated to New Mexico’s conditions yet, a goal is to examine how the uncalibrated ME predicted stress-strain data compares with the field measured stress-strain. A section on Interstate 40 (I-40) has been instrumented with 32 sensors including strain gauges, pressure plates, moisture probes, temperature probes, axle sensing strips, weather station and Weigh-in-Motion (WIM). Data from the sensors are being collected continuously. Pavement materials were collected during the construction and were tested in the laboratory. WIM data were processed. In addition, routine field testing such as Falling Weight Deflectometer (FWD) and density tests, and field survey were conducted to monitor the in-situ properties and performances of the pavement section. Due to the fact that the pavement ME software was not able to generate stress-strain file in the past, a KENLAYER software was used to predict stress-strain. It is found that the measured vertical stress is less than the predicted stress and the measured horizontal strain differs very slightly from predicted strain. A goal of this project is to compare the ME predicted distresses with measured distresses. However, the measured performance data from this section are very small, which was expected from a newly constructed pavement such as this. Therefore, project data collection and monitoring are recommended for continuation.
  • Format:
    PDF
  • Funding:
    456-341
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  • Main Document Checksum:
    urn:sha-512:d7570784e0e563390972aa16cba0ad36611f6c45468f989253c15c3b5ac9b0c79f7926412ee1d92a9613915dd37e0cce93b64655bab2e776bec3e56ea9df6914
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  • File Type:
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