Investigating Merits of Bio-Rejuvenation to Extend Pavement Service Life

The overall goal of this project is to extend pavement service life by applying timely preventive and corrective low-cost maintenance approach. As a step toward this goal, the specific objective of the project is to use bio-rejuvenation as a means of restoring aged asphalt pavement properties. The research team mainly starts counting pavement age after pavement placement and compaction is done, however, it should be noted that aging also occurs during plant mixing which promotes chemical imbalance within asphalt colloidal structure. The research hypothesis is that by applying bio-rejuvenator at periodic intervals during pavement life, one can restore the chemical balance of asphalt (asphaltene/maltene ratio) which is critical to maintain an adequately ductile pavement. This, in turn, would ensure pavement proper release of stress to prevent stress accumulation. It should be noted that when the pavement surface appears weathered and crusted, it has already lost its ductility and compliance capacity, this, in turn, would reduce pavement ability to release stress giving rise to stress accumulation due to traffic and environmental loading. When the stress level exceeds pavements’ ultimate strength, cracks initiate and continue to propagate compromising pavement integrity and performance.

• Record URL:
  http://www.chpp.egr.msu.edu/wp-content/uploads/2018/03/UTC-Project-Information-Form_NCAT-1.pdf
• 

Language

• English

Project

• Status: Active
• Funding: $139329
• Contract Numbers:

  DTRT13-G-UTC44

• Sponsor Organizations:

  Department of Transportation

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Managing Organizations:

  Michigan State University - Center for Pavement Preservation

  2857 Jolly Road
  Okemos, Michigan  United States  48864
• Performing Organizations:

  North Carolina A&T State University

  434 McNair Hall, 1601 E. Market St.
  Greensboro,, NC 27411  United States 
• Principal Investigators:

  Parast, Mahour

  Fini, Elham

• Start Date: 20170131
• Expected Completion Date: 20180130
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers Program

Subject/Index Terms

• TRT Terms: Asphalt pavements; Pavement maintenance; Preventive maintenance; Service life
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01662491
• Record Type: Research project
• Source Agency: Center for Pavement Preservation
• Contract Numbers: DTRT13-G-UTC44
• Files: UTC, RIP
• Created Date: Mar 11 2018 9:21PM