Effects of RAP Sources for Performance Testing of Asphalt Concrete

The use of reclaimed asphalt pavement (RAP) has become relatively common practice all over the world because it is an environmentally and economically attractive proposition. The primary reason for limited use is the uncertainty and variability of the RAP material performance. Understanding the response of RAP source and its variability are important to the selection of virgin and RAP material. Five different percentages (0, 15, 25, 35, and 40%) of RAP included asphalt concrete (AC) were designed to compare the effects of two RAP sources on hot mix asphalt (HMA). Gradation of all the HMA mixtures remained fixed and they were checked for volumetric requirements. To assess the effect of RAP source on AC, the samples were tested for dynamic modulus characterization, rutting characterization and beam fatigue characterization. Results show RAP in HMA material increases the complex modulus of all the samples irrespective of RAP sources. In addition, rutting resistance of the material increases with increase in RAP percentage in HMA. However, high RAP percentages in HMA materials show lower fatigue life compared to low percentage RAP in HMA.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: pp 119-128
  • Monograph Title: Airfield and Highway Pavements 2017: Testing and Characterization of Bound and Unbound Pavement Materials

Subject/Index Terms

Filing Info

  • Accession Number: 01688509
  • Record Type: Publication
  • ISBN: 9780784480939
  • Files: TRIS, ASCE
  • Created Date: Oct 4 2018 4:33PM