Evaluation of Material Property Tests to Predict Moisture Susceptibility of HMA

Hamburg wheel tracking tests and surface energy components of aggregates and asphalt binders were used to independently evaluate moisture susceptibility of HMA mixes. Hamburg is a torture test that is commonly used to identify rut-susceptible and moisture-susceptible mixes. Surface energy is a material property related to adhesion between the aggregate and asphalt binder. The Universal Sorption Device (USD) and Wilhelmy Plate methods were selected to determine surface energy characteristics of aggregates and asphalt binders, respectively. Six asphalt mixes were tested using the Hamburg wheel tracking test. Asphalt mixes with and without anti stripping agents (hydrated lime and a commercially available liquid anti stripping agent) were tested. Within groups of controlled mixes, the thermodynamic parameters calculated using surface energy measurements of their corresponding materials correlates well with the data from the Hamburg test. For some mixes, moisture susceptibility increased upon addition of hydrated lime or liquid antistripping agent. The increase in moisture susceptibility observed from Hamburg test results was consistent with the calculations based on surface energy measurements.

• Corporate Authors:

  International Society for Asphalt Pavements

  4711 Clark Avenue, Suite G
  White Bear Lake, MN  United States  55110
• Authors:
  • Bhasin, A
  • Chowdhury, A
  • Button, J
  • Little, D
• Conference:
  • 10TH INTERNATIONAL CONFERENCE ON ASPHALT PAVEMENTS - AUGUST 12 TO 17, 2006, QUEBEC CITY, CANADA
• Publication Date: 2006

Language

• English

Media Info

• Media Type: Print
• Pagination: p. vol1,699-708
• Monograph Title: 10th International Conference on Asphalt Pavements - August 12 to 17, 2006, Quebec City, Canada

Subject/Index Terms

• TRT Terms: Bitumen; Conferences; Hot coated materials; Laboratories; Sensitivity; Stripping (Pavements); Tests
• Geographic Terms: Canada
• Subject Areas: Materials; I26: Water Run-off - Freeze-thaw; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01084403
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Files: TAC
• Created Date: Jan 16 2008 7:56AM