Welcome to ROSA P |
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Pavement evaluation using a portable lightweight deflectometer.
  • Published Date:
    2012-12-01
  • Language:
    English
Filetype[PDF-1.47 MB]


Details:
  • Corporate Creators:
  • Publication/ Report Number:
  • Resource Type:
  • Geographical Coverage:
  • Abstract:
    The use of Zorn ZFG-3000 portable Lightweight Deflectometer (LWD) in the in-situ

    assessment of pavement quality was investigated in this research. A lower load and a

    shorter load pulse duration are used in a LWD as compared to a Falling Weight

    Deflectometer (FWD). LWDs are ideally suited for the structural evaluation of a single

    pavement layer at a time. LWDs could serve as a cost effective, non-destructive, in-situ test

    method for the evaluation of the mechanistic properties of the pavement and help to bridge

    the gap between the design and the construction of the pavements.

    The performance of the Zorn ZFG3000 LWD device in measuring the stiffness of asphalt

    layer was studied during construction of full-depth asphalt pavements. While it was observed

    that the Zorn ZFG-3000 LWD was easy to use and able to determine the general trends in

    increasing/decreasing stiffness of the asphalt pavement layer, the researchers found very

    little correlation between the LWD measured modulus and the density of the asphalt mat at

    the test locations as determined from roadway cores. Further, very little correlation was

    observed between the LWD measured modulus and the dynamic modulus of the pavement

    at the test locations. The LWD measurements also did not appear to depend on any

    pavement parameters such as mix type and gradation, lift thickness, total asphalt pavement

    thickness, and type of construction. Based on these findings, it is concluded that the Zorn

    ZFC-3000 LWD is not suitable for measuring the stiffness of asphalt pavements and for use

    in Quality Assurance of pavements.

  • Format:
  • Main Document Checksum:
  • Supporting Files:
    No Additional Files
No Related Documents.
You May Also Like:
Submit Feedback >