PERFORMANCE OF POLYMER-MODIFIED ASPHALT-AGGREGATE MIXTURES IN ALASKA

Polymer-modified asphalts are used in Alaska to address problems relating to rutting, cracking, and premature aging. This usage raises 2 important issues--improvement of pavement performance with polymer modification while maintaining the ability to properly place and compact polymer-modified mixes. This study addresses both issues. Base asphalts and polymer-modified binders were analyzed for storage stability, compatibility, and consistency using traditional and Superpave tests. Thermal stress restrained specimen tests and Georgia wheel rutting tests were conducted for asphalt-aggregate mixtures. Test results indicate that polymer-modified asphalts should always be an end result of an extensive product development program. The premanufactured binders had the best performance and workability. The polymer modification improved the performance of all base asphalts in several polymer-asphalt combinations. Some binders smoked excessively during mixing, warranting further research. A storage stability test should be added to specifications or contractors should address the storage stability with techniques such as tank circulation. On the basis of test results, the Superpave PG grading needs to be adjusted for polymer-modified asphalts.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13202939
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Zubeck, H
  • Raad, L
  • Saboundijian, S
  • Minassian, G
  • Ryer, J
• Publication Date: 2002-12

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 170-190
• Serial:
  • Journal of Cold Regions Engineering
  • Volume: 16
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 0887-381X
  • Serial URL: http://opjs.aip.org/cro

Subject/Index Terms

• TRT Terms: Aggregate mixtures; Asphalt mixtures; Asphalt pavements; Base course (Pavements); Cold weather construction; Highway engineering; Pavement components; Pavement cracking; Pavement design; Pavement distress; Pavement performance; Polymer asphalt; Rutting
• Geographic Terms: Alaska
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00935582
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 12 2003 12:00AM