Exploring the Use of Antioxidants to Substantially Increase Cracking Life of Asphalt Pavement

Cracking dictates the service life of asphalt pavements. Oxidative aging of the asphalt binder renders the binder brittle and susceptible to cracking. Higher number of high temperature days further exacerbates rate of oxidation and reduction in the service life of an asphalt pavement. Recent coordinated studies by a global consortium of researchers have identified generic chemicals that can act as antioxidants to significantly reduce the oxidative aging of asphalt and increase its cracking resistance and service life. Similarly, commercial additive manufacturers are also exploring the development and deployment of antioxidant additives. In the project, the research teams will review the literature and interface with existing national and international studies to identify the most promising antioxidant(s) for use with asphalt binders as a modifier. The research teams will conduct laboratory studies on asphalt binders and mixtures to evaluate the efficacy of these antioxidants. The research teams will also conduct workshops with stakeholders and conduct cost-benefit analysis to develop plans for pilot test section and facilitate the deployment of such sections with districts and industry partners. Finally the research teams will also present metrics that can be used for specification and quality control purposes by Texas Department of Transportation (TxDOT).

• Record URL:
  https://library.ctr.utexas.edu/Presto/project=0-7227

Language

• English

Project

• Status: Active
• Funding: $800331
• Contract Numbers:

  0-7227

• Sponsor Organizations:

  Texas Department of Transportation

  125 E. 11th Street
  Austin, TX  United States  78701-2483
• Project Managers:

  Dassi, Martin

• Performing Organizations:

  Center for Transportation Research

  3925 W. Braker Lane
  Austin, TX  United States  78759

  Texas A&M Transportation Institute

  Texas A&M University System
  3135 TAMU
  College Station, TX  United States  77843-3135
• Principal Investigators:

  Bhasin, Amit

• Start Date: 20240901
• Expected Completion Date: 20270831
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Aging (Materials); Antioxidants; Asphalt pavements; Benefit cost analysis; Binders; Cracking; Service life
• Subject Areas: Construction; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01928237
• Record Type: Research project
• Source Agency: Texas Department of Transportation
• Contract Numbers: 0-7227
• Files: RIP, STATEDOT
• Created Date: Aug 23 2024 11:12AM