Determining the impact of degree of blending and quality of reclaimed asphalt pavement on predicted pavement performance using pavement ME design

Sean Coffey, Eric Dubois, Yusuf Mehta, Aaron Nolan, Caitlin Purdy

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Past studies indicated binder from reclaimed asphalt pavement (RAP) aggregates only partial degree of blending (DOB) within hot mix asphalt (HMA). Most state agencies assume full blending, which may lead to under asphalting. This study focuses on determining the impact of it on predicted performance using ME level I analysis of six 25% RAP mixes. Dynamic complex modulus (DCM) tests were conducted with full and "actual" blending, all greater than 85%, using varying conditions comparing rutting and fatigue performance. The results indicate high DOB RAP mixes with uniform gradations have negligible effect on predicted performance and would not compromise performance.

Original languageEnglish (US)
Pages (from-to)473-478
Number of pages6
JournalConstruction and Building Materials
Volume48
DOIs
Publication statusPublished - Aug 19 2013

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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