Asphalt Mixtures with Crumb Rubber Modifier for Longevity and Environment (2.1)

The main research plan is to study new materials that will make some positive changes in the durability and longevity of the life of transportation infrastructure, e.g., new asphalt mixtures with Crumb Rubber Modifier (CRM). CRM is recycled rubber produced from waste scrap tires, and when it is incorporated into paving asphalt mixtures, CRM provides many positive improvements in deformation resistance, fatigue resistance and noise reduction Encouraged by successful laboratory study results, CRM became one of the popular materials to modify the properties of conventional asphalt paving materials for pavement longevity, e.g., No-agitation Tire Rubber Modified Bitumen (TR-MB). Since there are 1 billion tires stockpiled and 300 million annual increments of tires generated per year in the United States, CRM also could be the potential solution for the solid waste problem. TR-MB is quite a new technology leading to bituminous binders, such as polymer-modified bitumen, in terms of both rheology and required efforts during paving operations. Their manufacturing is strongly dependent on the selected processing variables as well as on the selected materials. This research will include studying the influence of processing conditions on the modification process, storage stability and overall properties of the final bitumen-tire rubber blends. The objectives of this project are to: (1) Investigate the benefits of the crumb rubber modifier (CRM) for pavement longevity; (2) Study the effects of increasing CRM contents on permanent deformation, fatigue cracking, skid resistance and roughness; (3) Decrease the demand of pure bitumen and to use eco-friendly materials; (4) Develop appropriate mix designs for asphalt mixtures with CRM as modifier, which provides maximum positive impacts on reducing rutting and cracking; and, (5) Promote the maximum and optimal use of CRM in the asphalt pavement.

• Record URL:
  https://tidc.umaine.edu/tidc_project/2-1-uri/

Language

• English

Project

• Status: Terminated
• Funding: $249367
• Contract Numbers:

  69A3551847101

• Sponsor Organizations:

  University of Rhode Island, Kingston

  College of Engineering
  Kingston, RI  United States  02881

  Office of the Assistant Secretary for Research and Technology

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

  Transportation Infrastructure Durability Center

  University of Maine
  Orono, ME  United States  04469

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Project Managers:

  Dunn, Denise

• Performing Organizations:

  Transportation Infrastructure Durability Center

  University of Maine
  Orono, ME  United States  04469

  University of Rhode Island, Kingston

  Transportation Center, 85 Briar Lane
  Kingston, RI  United States  02881
• Principal Investigators:

  Lee, K

  Veyera, George

• Start Date: 20180701
• Expected Completion Date: 20210630
• Actual Completion Date: 20200801
• USDOT Program: University Transportation Centers Program

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Crumb rubber; Deformation; Fatigue cracking; Mix design; Pavement performance; Roughness; Rutting; Service life; Skid resistance
• Subject Areas: Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01698680
• Record Type: Research project
• Source Agency: Transportation Infrastructure Durability Center
• Contract Numbers: 69A3551847101
• Files: UTC, RIP
• Created Date: Mar 7 2019 3:00PM