SURFACE FREE ENERGY MEASUREMENT OF AGGREGATES AND ITS APPLICATION TO ADHESION AND MOISTURE DAMAGE OF ASPHALT-AGGREGATE SYSTEMS

A protocol for measuring the thermodynamic surface free energy of aggregates using the Universal Sorption Devices is presented. Surface free energy, which is the reflection of material surface physical chemistry characteristics, can be used to evaluate adhesive fracture and moisture damage characteristics within the asphalt-aggregate system. Three widely used aggregates were tested using the Universal Sorption Device. The materials possessed very different surface free energies. By knowing the surface energy of the asphalt and aggregates, the most compatible asphalt-aggregate combination can be selected that will increase the ability of the asphalt pavement to resist adhesive fatigue fracture and moisture damage and maximize fracture healing.

• Supplemental Notes:
  • Full conference proceedings available on CD-ROM.
• Corporate Authors:

  University of Texas, Austin

  International Center for Aggregates Research, 3208 Red River
  Austin, TX  United States  78705-2650

  Texas A&M University, College Station

  Faculty Exchange Box H
  College Station, TX  United States  77843
• Authors:
  • Cheng, D X
  • Little, D N
  • Lytton, R L
  • Holste, J C
• Conference:
  • International Center for Aggregates Research 9th Annual Symposium: Aggregates - Concrete, Bases and Fines
  • Location: Austin, Texas
  • Date: 2001-4-22 to 2001-4-25
• Publication Date: 2001

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 19p

Subject/Index Terms

• TRT Terms: Adhesion; Aggregates; Asphalt; Asphalt pavements; Cracking; Fatigue (Mechanics); Moisture damage; Surface energy; Thermodynamics
• Identifier Terms: Universal Sorption Devices
• Subject Areas: Geotechnology; Highways; I36: Aggregates;

Filing Info

• Accession Number: 00983577
• Record Type: Publication
• Report/Paper Numbers: Final Draft
• Files: TRIS
• Created Date: Dec 27 2004 12:00AM