WisDOT asphaltic mixture new specifications implementation : field compaction and density.
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WisDOT asphaltic mixture new specifications implementation : field compaction and density.

Filetype[PDF-2.30 MB]


  • English
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    Details:

    • Creators:
    • Corporate Creators:
      Behnke Materials Engineering, LLC
    • Corporate Contributors:
      Wisconsin Highway Research Program
    • Subject/TRT Terms:
    • Publication/ Report Number:
      0092-15-09
    • Resource Type:
      Tech Report
    • Geographical Coverage:
      Wisconsin
    • Corporate Publisher:
      Behnke Materials Engineering, LLC
    • Abstract:
      The main research objectives of this study were to evaluate HMA Longitudinal Joint type, method and compaction data to produce specification recommendations that will ensure the highest density longitudinal joint, as well as evaluate and produce a specification for Thin Layer Overlay HMA that will ensure proper and consistent compaction throughout the pavement.

      In 2014, longitudinal nuclear density data was collected throughout Wisconsin on 28 projects. In 2015 three projects were visited (for more extensive data collection) with varying longitudinal joint type: vertical, notched wedge, milled and safety edge. Additionally one thin lift overlay project was visited.

      Each 2015 project consisted of nuclear density readings, core density, NCAT Asphalt Permeameter and Hamburg Wheel testing. Results showed that a nuclear density gauge, specifically when used in the parallel position (relative to traffic and paving direction), is an acceptable tool to use to determine in place densities. However, a nuclear / core correlation on a test strip is recommended for all projects. The standard nuclear gauge overestimates density, while the thin lift nuclear gauge underestimates density.

      The milled longitudinal joint achieved the highest density, followed by notched wedge and safety edge. Vertical longitudinal joints had the lowest average joint densities. Heating joints resulted in higher densities for all joint types where data was available. Rolling pattern included both contractor standard practice and FHWA recommended methods but was not found to have significant influence on longitudinal joint density.

    • Format:
      PDF
    • Funding:
      WHRP 0092-15-09
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