Current ICT Project
Investigators:
  Angela Wolters (Primary), Kurt Smith
Project Title:
  Evaluation of HMA Overlays in Illinois
Start Date: 7/1/2007
End Date: 8/31/2008
Summary of Project:
  The proposed research will assess the overall performance of overlaid pavement sections on two subsets of the pavement network: interstate and off-interstate, marked routes. Evaluations of the performance of SMART (Surface Maintenance at the Right Time) and of policy overlays for two pavement network subsets (pavement sections constructed between 1980 and 2001 and pavement sections constructed between 2001 to present) will be conducted.
Objective of Project:
  These attributes were examined: construction year period, location, condition before overlay placement, presence of D-cracking on rigid pavement sections before overlay, underlying concrete type, estimated overlay number, and overlay type.
Expected Outcome:
  Documented the impact of the evaluated variables on the performance of HMA overlays based on service life result and developed an extensive database that IDOT can use to further analyze the effects of various attributes on the performance of HMA overlays.
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Last Updated: 11/18/2009