Laboratory Evaluation of Foamed Asphalt Stabilized Base Materials

Foamed asphalt stabilized base (FASB) combines reclaimed asphalt pavement and/or recycled concrete with a binder. The pavement structural properties of the FASB material created by this process falls somewhere between conventional untreated graded aggregate base and hot mix asphalt. Mix designs were developed for six different combinations of aggregate types. Details of the mix design procedures, including the associated foamed asphalt and mixture tests, are provided along with a discussion of appropriate curing and soaking procedures and the effects of additives, mixing moisture content (MMC), compaction moisture content (CMC), and material storage after mixing. Higher indirect tensile strengths (ITS) in both soaked and unsoaked conditions were obtained in mixes containing recycled concrete and/or cement and that were compacted at 90% of optimum moisture content (OMC) immediately after mixing followed by curing at 40°C for 72 hours. MMC and the fines percentage did not significantly affect strength.

• Record URL:
  https://doi.org/10.1061/9780784412121.164
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784412121
• Supplemental Notes:
  • © 2012 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Khosravifar, Sadaf
  • Goulias, Dimitrios G
  • Schwartz, Charles W
• Conference:
  • GeoCongress 2012
  • Location: Oakland California, United States
  • Date: 2012-3-25 to 2012-3-29
• Publication Date: 2012-3

Language

• English

Media Info

• Media Type: Web
• Pagination: pp 1592-1601
• Monograph Title: GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering

Subject/Index Terms

• TRT Terms: Asphalt pavements; Base course (Pavements); Foamed asphalt; Laboratory tests; Mix design; Moisture content; Reclaimed asphalt pavements; Tensile strength
• Uncontrolled Terms: Curing temperature; Curing time; Recycled concrete
• Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01530380
• Record Type: Publication
• ISBN: 9780784412121
• Files: TRIS, ASCE
• Created Date: Nov 12 2013 2:04PM