Moisture Content and In-Place Density of Cold Recycle Treatments

This study proposes investigating the feasibly of monitoring moisture content and density of an emulsified asphalt mixture during curing. The dielectric properties and resilient modulus of the CIR will be evaluated using GPR and the light weight deflectometer (LWD), if available. The relationship between the dielectric constant and the moisture content of the emulsified asphalt mixture will be evaluated, and the moisture content will be predicted or indicated based on GPR measurements. A moisture content prediction or an indicator model will be proposed to assist in the decision-making of traffic-opening time. In addition, it is proposed to modify the ALL model for in situ density prediction of CIR-treated AC mixtures based on the results from this project. This suggests that the effect of internal moisture content will be considered.

Language

• English

Project

• Status: Active
• Funding: $295000
• Contract Numbers:

  R27-227

• Sponsor Organizations:

  Illinois Department of Transportation

  Bureau of Materials and Physical Research
  126 East Ash Street
  Springfield, IL  United States  62704-4766
• Managing Organizations:

  University of Illinois, Urbana-Champaign

  Illinois Center for Transportation
  1611 Titan Drive
  Rantoul, IL  United States  61866
• Principal Investigators:

  Al-Qadi, Imad

• Start Date: 20200516
• Expected Completion Date: 20220515
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Asphalt concrete; Asphalt mixtures; Cold in-place recycling; Concrete curing; Deflectometers; Density; Feasibility analysis; Ground penetrating radar; Modulus of resilience; Moisture content
• Subject Areas: Design; Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01739383
• Record Type: Research project
• Source Agency: Illinois Department of Transportation
• Contract Numbers: R27-227
• Files: RIP, STATEDOT
• Created Date: May 15 2020 12:11PM