Current ICT Project
Investigators:
  Prof. William Buttlar (Primary), Prof. Imad Al-Qadi
Project Title:
  Cost-Effectiveness and Performance of Overlay Systems in IL / Reflective Crack Control
Start Date: 7/1/2005
End Date: 12/31/2008
Summary of Project:
  Hot-mix asphalt (HMA) overlays are typically applied to existing flexible and rigid pavements when the structural or functional conditions of the pavement system have reached an unacceptable level of service. However, adequately designed overlays may still show cracking or joint patterns similar to the ones which existed in the old pavement after a short period of time; i.e., ‘reflection cracking’ occurs. Evaluation of different rehabilitation methodologies including interlayer systems will be performed using theoretical, laboratory, field evaluations, and a combination of these approaches. Up-to-date life cycle costs and a rehabilitation guidance document will be produced.
Objective of Project:
  To evaluate the performance and life-cycle cost of various asphalt overlay and interlayer systems used on Illinois highways.
Expected Outcome:
  Life cycle costs, technical briefs, new experimental sections and monitoring guidance, and a preliminary user guide.
Click here to check the status of this project.
Last Updated: 11/18/2009