Novel Methods for Adding Rejuvenators in Asphalt Mixtures with High Recycled Binder Ratios

The objective of this study is to explore three novel methods for adding rejuvenators and determine their impacts on the performance properties of asphalt mixtures with high recycled binder ratios. This study seeks to (1) optimize the foaming characteristics of asphalt rejuvenators and rejuvenated asphalt binders; (2) quantify the dispersion of foamed and emulsified rejuvenators in RAP/RAS (reclaimed asphalt pavements/recycled asphalt shingles) and their impacts on the SARA (saturate, aromatic, resin, and asphaltene) fractions of recycled asphalt binders; and (3) determine the impacts of different methods for adding rejuvenators on the workability, fatigue cracking resistance, and thermal cracking resistance of high RAP/RAS asphalt mixtures.

• Record URL:
  https://www.mndot.gov/research/reports/2022/NRRA202202.pdf
• Supplemental Notes:
  • TPF-5(341)

Language

• English

Project

• Status: Completed
• Funding: $80000
• Contract Numbers:

  1036333 WO#1

• Sponsor Organizations:

  National Road Research Alliance

  St. Paul, MN  United States  55155
• Managing Organizations:

  Minnesota Department of Transportation

  395 John Ireland Boulevard
  St Paul, MN  United States  55155
• Performing Organizations:

  Auburn University

  Auburn, AL  United States  36830
• Principal Investigators:

  Yin, Fan

• Start Date: 20201231
• Expected Completion Date: 20220630
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Fatigue strength; Foamed asphalt; Pavement performance; Reclaimed asphalt pavements; Recycled materials; Rejuvenators; Workability
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01762013
• Record Type: Research project
• Source Agency: Minnesota Department of Transportation
• Contract Numbers: 1036333 WO#1
• Files: RIP, STATEDOT
• Created Date: Jan 7 2021 10:44AM