Methodology of Mixing and Compaction Temperatures for Modified Asphalt Mixture

To study methodology of determining mixing and compaction temperature for modified asphalt mixture, the Superpave gyratory compaction tests are adopted to study the volumetric parameters of several modified asphalt mixtures. First, the rational compaction temperature is obtained based on the optimal compaction effect, and according to the relationship of viscosity with temperature and shear rate considerations, a shear rate of 60(1·s–1) is proposed to measure the viscosity of modified asphalt. At this shear rate, the viscosity of modified asphalt at different temperatures can be obtained and the viscosity-temperature curve can be achieved. As a result, the mixing and compaction temperature for modified asphalt can be determined to deliver 0.17±0.02Pa·s and 0.28±0.03Pa·s for HMA mixing and compaction, respectively. The difference between temperatures obtained with the methodology and temperatures at which optimal compaction effect can be obtained is less than 5°C. The proposed temperatures are also kept in good accordance with paving practice.

• 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:
  • Zhang, Zheng-qi
  • Tao, Jing
  • Yang, Bo
  • Li, Ning-li
• 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;
• Pagination: pp 34-41
• Monograph Title: Road Pavement Material Characterization and Rehabilitation: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Compaction; Mixing; Temperature
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01139981
• Record Type: Publication
• ISBN: 9780784410431
• Files: TRIS
• Created Date: Sep 18 2009 7:08AM