An Investigation of Ndesign Values for Superpave Surface Mixtures

In Superpave surface mixtures, the asphalt binder content in the mix decreases with an increase in the number of gyrations in order to satisfy the volumetric requirements of the mix design procedure. This study seeks to determine the number of design gyrations for Superpave design of asphalt concrete mixes (Ndes) that will optimize mixture performance with respect to fatigue cracking and rutting. The assessment involves six different types of Superpave-designed surface methods, each at 50, 70, 100 and 125 gyrations. Dynamic modulus of the asphalt concrete mix is used to evaluate mix performance in this study and the rutting and fatigue performance of the mixes at different design gyration levels is measured using the DARWin-ME software. Following the research findings, the authors recommend several optimum Ndes values for the surface mixes evaluated.

• Availability:
  • Find a library where document is available. Order URL: http://www.asphalttechnology.org/annual-journal/current-issue.html
• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  6776 Lake Drive
  Lino Lakes, MN  United States  55014

  DEStech Publications, Inc.

  439 Duke Street
  Lancaster, Pennsylvania  United States  17602
• Authors:
  • Ayyala, Dinesh
  • Qarouach, Soufiane
  • Khosla, N Paul
  • Tayebali, Akhtarhusein A
• Conference:
  • 89th Association of Asphalt Paving Technologists' Annual Meeting
  • Location: Atlanta Georgia, United States
  • Date: 2014-3-16 to 2014-6-19
• Publication Date: 2014

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 345-372
• Monograph Title: Asphalt Paving Technology 2014
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Issue Number: 83
  • Publisher: Association of Asphalt Paving Technologists (AAPT)
  • ISSN: 0270-2932
  • Serial URL: https://www.asphalttechnology.org/site_page.cfm?pk_association_webpage_menu=9169&pk_association_webpage=19109

Subject/Index Terms

• TRT Terms: Asphalt concrete; Asphalt mixtures; Dynamic modulus of elasticity; Fatigue cracking; Mix design; Pavement performance; Rutting; Superpave
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01636678
• Record Type: Publication
• Files: TRIS
• Created Date: May 30 2017 8:23AM