Environmental considerations in the new AASHTO pavement design guide: part 2, impacts on performance

  1. (PDF, 2 MB)
AuthorSearch for: ; Search for:
Journal titleJournal of cold regions engineering
Subjectpavement; environmental factors
AbstractThis paper is a continuation of an earlier overview on the subject and presents the results of a sensitivity analysis that assessed the ability of the Mechanistic Empirical Pavement Design Guide (MEPDG) to portray the impact of temperature and moisture content on flexible pavements performance. The study used the most common asphalt concrete (HL3) and unbound materials (granular A and silty sand) used in Canada. Two binders (PG 52-34 and PG 58.28) and three moisture conditions (dry, wet and optimum) were chosen. Designs performed using level3 of analysis for unbound materials and level 1 for asphalt concrete showed the MEPDG is sensitive to binder performance grades as well as to climatic zones (cold vs. warm). However, the MEPDG showed limited sensitivity to the state of unbound materials where permanent deformation showed negligible changes between wet, dry and optimum conditions.
AffiliationConstruction; National Research Council Canada
Peer reviewedYes
NRC numberNRC-CONST-56185
NPARC number21275435
Export citationExport as RIS
Report a correctionReport a correction
Record identifier7549584d-86db-4e6c-89f5-992a4ae77051
Record created2015-07-13
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)