RIDOT – Warm Mix Asphalt and Intelligent Compaction Project
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RIDOT – Warm Mix Asphalt and Intelligent Compaction Project

Filetype[PDF-3.70 MB]

  • English

  • Details:

    • Alternative Title:
      Accelerated Innovation Deployment (AID) Demonstration Project: Warm-Mix Asphalt Additive & Intelligent Compaction AID Project
    • Resource Type:
    • Edition:
      Final Report
    • Abstract:
      This Warm-Mix Asphalt Additive & Intelligent Compaction (WMA & IC) project meets the program goals of the Accelerated Innovation Deployment (AID) Demonstration Grant offered by U.S. DOT Federal Highway Administration (CFDA Number 20.200), as both innovations are included in Every Day Counts (EDC) initiatives. This complete project will be implemented by the Rhode Island Department of Transportation (RIDOT) as a means of documenting two important benefits WMA and IC technologies help achieve; proper pavement density; and improved pavement performance with the goal of encouraging greater acceptance of these innovations within the Rhode Island highway construction community. The work consisted of applying WMA Additive to the pavement mixture for approximately one half of 22,400 feet of RI Route 102 within the Towns of Coventry and Foster, Rhode Island and applying HMA on the remaining half of the roadway. IC was applied over the entire paving limits for both the WMA and the HMA. The work also included conducting a comparative analysis of the pavement performance for the HMA and WMA sections. This analysis will continue to be conducted over a three-year period with supplements to this Final Report issued accordingly. The AID goal of this project was to document the achievement of equal or better pavement performance for the road segment paved with WMA additive as compared to the traditional HMA pavement segment over a three-year period. Our target of achieving a 0.5% improvement in the HMA control group and the WMA pavement was not achieved in the first set (three sets in total) of data analysis sessions. As this innovation is expected to improve the life of the pavement, the Department expects to see long term improvements, for example superior fatigue and rutting performance and a decrease in the permeability of the asphalt mixtures. This improvement is expected to decrease the speed at which the pavement ages. Because of the characteristics of the innovations, the use of WMA and the use of IC had no effect on the project completion time.
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