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Implementation of Texas asphalt concrete overlay design system.

File Language:
English


Details

  • Creators:
    Hu, Sheng ORCID ICON IMG ; Zhou, Fujie ORCID ICON IMG ; Scullion, Tom
  • Corporate Creators:
    Texas A&M Transportation Institute
  • Corporate Contributors:
    United States. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA/TX-13/5-5123-03-1
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Texas
  • Corporate Publisher:
    Texas Department of Transportation. Research and Technology Implementation Office
  • Abstract:
    An asphalt overlay design system was developed for Texas Department of Transportation (TxDOT) under ; Research Project 0-5123. The new overlay design system, named the Texas Asphalt Concrete Overlay ; Design System (TxACOL), can help pavement engineers optimize asphalt overlay design in terms of ; overlay mix type and thickness, based upon existing pavement structure and conditions (existing distress ; types and/or load transfer efficiency at joints/cracks), local weather conditions, and anticipated traffic ; level. ; Several districts in Texas expressed interest in implementing this new overlay design system for designing ; asphalt overlays. To facilitate the implementation in districts, Project 5-5123-03 was initiated. The work ; performed under this study included (a) developing and conducting district-oriented overlay design ; workshops, (b) providing asphalt overlay design assistance and monitoring the new constructed overlays, ; (c) performing laboratory testing and updating the material default values of overlay mixes, (d) surveying ; the field performance (rutting and cracking) of asphalt overlay projects, and (e) enhancing and calibrating ; the TxACOL. ; This report documents the work and findings from this study. Case analyses showed that the enhanced ; TxACOL can make reasonable predictions compared to survey results. The researchers recommend that ; TxACOL be used as a tool for asphalt overlay design in TxDOT districts. Apparently, calibration factors ; still need to be further verified through more field test sections.
  • Format:
    PDF
  • Funding:
    Project 5-5123-03
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/28007/dot_28007_DS1.pdf
  • File Type:
    Filetype[PDF - 7.44 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha-512:3c6ce743fc1539ca87ff7f114d1a047a9b60e16e4b177e66353db77575358cd8eaae65fef1ce0da3bf4c0d9af2772a1be9fb67e3728966194717486c925f06f7
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