Asphalt rheology and strengthening through polymer binders : final report.

Details

• Creators:
  Attoh-Okine, Nii ; Cook, Pamela ; Martey, Emmanuel ; Boyce, Truxton ; Alshali, Ali
• Corporate Creators:
  University of Delaware
• Corporate Contributors:
  Rutgers University. Center for Advanced Infrastructure and Transportation ; Delaware. Dept. of Transportation ; United States. Department of Transportation. Research and Innovative Technology Administration ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Rheology
  • Asphalt pavements
  • Polymers
  • Flexible pavements
  • Binders
  • Pavement performance Asphalt rheology
  • pavements
  • polymers
  • binders
• Publication/ Report Number:
  CAIT-UTC-039
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Rutgers University. Center for Advanced Infrastructure and Transportation
• Abstract:
  This term paper investigates the influences of polymer modifications to asphalt rheology as compared to ; conventional asphalt pavement sections. The addition of 2% to 3% of polymers into the wearing and base courses ; of asphalt (flexible) pavements have been known to enhance the engineering characteristics of traditional asphalt as ; a binder which offers longer life expectancy and increased capacity, increased resistance to fatigue cracking, ; increased resistance to rutting (permanent deformation), improved thermal-stiffness performance at high and low ; extreme temperatures, increased resistance to tension cracking, increased resistance to stripping, and reduce binder ; drain down. Polymers are classified in this paper into their major respective categories with the most common types ; presented and described in detail. Challenges related to the usage, rheology, and practical implementation of ; polymer modified asphalt are discussed. Standardized and non-standardized tests and experiments related to the ; physical and rheological characterization of asphalts and polymer-modified are also presented. Recent research has ; focused on the sustainability concepts for the application of polymer modified asphalt for high-recycled asphalt ; mixtures to achieve similar or better engineering characteristics as compared to conventional asphalt pavement ; mixtures. The sustainable benefits of using high-reclaimed asphalt pavement with the addition of polymer and ; rejuvenator modifications include reduced landfill / stockpile dependence, reduced greenhouse gas emissions from ; less required virgin binder from oil barrels, and possible economic benefits depending on the true-costs of the ; project. To achieve comparable or better rheological properties for high-recycled asphalt pavement high-polymer ; modified asphalt can be used with between 7% and 8% polymer additions. Furthermore, high-polymer modified ; asphalt is shown to be applicable to applications such as highly traveled highways, when thinner layers of pavement ; is required and long-life expectancy is critical when combined with increasing traffic intensities and loads.
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• Format:
  PDF
• Funding:
  DTRT12-G-UTC16
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/31796/dot_31796_DS1.pdf
• File Type:
  [PDF - 971.00 KB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:c95c58a10d892f1183de1cbd6fc50fad6d5a4cfb8a8d7fb0c0b07ab1e2cebec11555a8c697fc891641827e5f8ba9b95fc7010670057e37f35737ffad75c350b9