HP-GPC Approach to Evaluating Laboratory Prepared Long-Term Aged Rubberized Asphalt Binders

The high pressure-gel permeation chromatographic (HP-GPC) testing was adopted to determine the molecular size distribution (MSD) of asphalt binders. The percentages of large, medium and small molecular sizes of asphalt binders are able to help the researcher and engineer determine the aging characteristics of asphalt binder. The objective of this research was to investigate the aging behavior of the rubberized asphalt binders as well as the virgin binder and the binder using 3% Styrene-butadiene-styrene (SBS) polymer after a long-term aging through the laboratory HP-GPC testing approach. The experimental design included the uses of three binder sources, three binder grades and three aging levels, i. e., virgin, rolling thin film oven and pressure aging vessel that included three testing temperatures (85, 100 and 110°C) and three aging durations (15, 20, and 40 hours). The results indicated that the HP-GPC approach can effectively describe the aging status of asphalt binders; the use of crumb rubber could improve the aging resistance of the asphalt binder; in addition, the PG 64-22 binder mixed with 10% crumb rubber generally showed the similar aging properties as of PG 76-22 using 3% SBS polymer after a long-term aging process in this study.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784410431
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Xiao, Feipeng
  • Amirkhanian, Serji N
• Conference:
  • GeoHunan International Conference: Challenges and Recent Advances in Pavement Technologies and Transportation Geotechnics
  • Location: Changsha Hunan, China
  • Date: 2009-8-3 to 2009-8-6
• Publication Date: 2009

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 42-48
• Monograph Title: Road Pavement Material Characterization and Rehabilitation: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

• TRT Terms: Aging (Materials); Asphalt rubber; Bituminous binders; Laboratory tests
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01139905
• Record Type: Publication
• ISBN: 9780784410431
• Files: TRIS
• Created Date: Sep 18 2009 7:08AM