Bulk Specific Gravity of Reclaimed Asphalt Pavement Aggregate: Evaluating the Effect on Voids in Mineral Aggregate

Several methods are available for determining the bulk specific gravity (Gsb) of reclaimed asphalt pavement (RAP). However, a clear recommendation has not been had for determining this property. In this study, asphalt mixes with known aggregate properties were produced and aged in the laboratory to simulate RAP. The aggregates were recovered, and the aggregate properties, including Gsb, were reassessed. The aged mixtures were also tested to determine maximum theoretical specific gravity (Gmm), from which estimated Gsb values could be calculated. The Gsb values from both the extraction and Gmm methods were compared with the known or true Gsb values for these aggregates. The effects of the RAP Gsb errors on voids in mineral aggregate values from the various methods were also evaluated. On the basis of the results of this study, it is recommended that the Gmm method be used to determine the RAP Gsb when a regional absorption value is known.

• Record URL:
  https://doi.org/10.3141/2180-04
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=Bulk+Specific+Gravity+of+Reclaimed+Asphalt+Pavement+Aggregate%3a+Evaluating+the+Effect+on+Voids+in+Mineral+Aggregate&author=A.+Kvasnak&author=R.+West&author=J.+Michael&author=L.+Loria&author=E.+Hajj&author=N.+Tran&publication_year=2010
• Availability:
  • Find a library where document is available. Order URL: http://www.trb.org/Main/Blurbs/Bituminous_Materials_and_Mixtures_2010_Volume_2_164857.aspx
• Authors:
  • Kvasnak, Andrea
  • West, Randy
  • Michael, Jenna
  • Loria, Luis
  • Hajj, Elie Y
  • Tran, Nam
• Publication Date: 2010

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 30-35
• Monograph Title: Bituminous Materials and Mixtures 2010, Volume 2
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2180
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Air voids; Asphalt mixtures; Laboratory tests; Reclaimed asphalt pavements; Recycled materials; Specific gravity; Test procedures
• Uncontrolled Terms: Maximum specific gravity; Voids in mineral aggregate
• Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01150963
• Record Type: Publication
• ISBN: 9780309160506
• Report/Paper Numbers: 10-2170
• Files: PRP, TRIS, TRB, ATRI
• Created Date: Jan 25 2010 11:00AM