Development of Test Procedures to Evaluate Moisture Susceptibility of Asphalt Mixtures Used in the State of Kansas, Phase I: Surface Free Energy of Binders [Technical Summary]

Details

• Creators:
  Verma, Payal ; Darabi, Masoud K
• Corporate Creators:
  University of Kansas. Dept. of Civil, Environmental and Architectural Engineering
• Corporate Contributors:
  Kansas. Department of Transportation
• Subject/TRT Terms:
  • Binders
  • Asphalt mixtures
  • Moisture content
  • Test procedures
• Publication/ Report Number:
  KS-24-06
• Resource Type:
  Brief
• Geographical Coverage:
  Kansas ; United States
• Edition:
  Technical Summary
• Corporate Publisher:
  Kansas. Department of Transportation
• Abstract:
  The surface free energy of an asphalt binder and aggregate is essential for determining the moisture susceptibility of asphalt mixtures. This project proposed an efficient method to routinely measure the surface energies of asphalt binders and aggregates to help design asphalt mixtures that are increasingly resistant to moisture damage. Surface energies of these materials can be used to calculate the energy-based parameter (ER) of asphalt binder-aggregate combinations to identify moisture resistance levels. Due to variability in the results, at least four probe liquids should be used in the future to enhance calculation accuracy. In addition, future tests should be conducted in a controlled environment that limits significant temperature change. Results from this analysis could be used to select test methods and mathematical models that relate surface energy to the performance of asphalt mixtures.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/78037/dot_78037_DS1.pdf
• File Type:
  [PDF - 249.96 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4fe08ba7db9573e3957b9e176bf4aa63fa4bb9b0859318375cb2b477c63edf158aeae479e4e9dc333fccde616b1566eca75240cb5caf72f1cc4b012ce71b38d0