STRIPPING OF ASPHALT CONCRETE - SUMMARY

Stripping in asphalt concrete has long been recognized as a cause of premature pavement damage. The stripping mechanism, the nature of antistripping additives, tests for assessing stripping potential and antistripping agent effectiveness, and procedures for detecting additives in asphalt cement were studied. Aggregate, asphalt cement and antistripping additives typical of Alabama were utilized in a testing program. Stripping is a complex phenomenon related to numerous physical and chemical properties of all mix constituents (aggregate, asphalt cement and additives). Each mix must be tested individually and any change in constituents can affect results. Antistripping additives should be tested only after aging for times and temperatures approximating construction conditions. The boil and tensile strength tests, in combination, provide a viable, although imperfect, system for assessing mix stripping potential and antistripping additives effectiveness. The tensile strength test measures basic properties and permits simulation of construction and environmental conditions and, as a result, is recommended for assessing mix stripping potential and antistripping agent effectiveness. The boil test is simplier and correlates reasonably well with the tensile strength test. The boil test on complete mixes or on one size standard aggregate is recommended for quality control.

• Corporate Authors:

  Auburn University

  Engineering Experiment Station
  Auburn, AL  United States  36849

  Alabama State Highway Department

  Bureau of Materials and Tests, 1409 Coliseum Blvd
  Montgomery, AL  United States  36130

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Parker Jr, F
  • Tarrer, A R
• Publication Date: 1987-1

Media Info

• Features: Figures; References;
• Pagination: 11 p.

Subject/Index Terms

• TRT Terms: Aggregates; Antistrip additives; Asphalt cement; Asphalt concrete; Boiling; Chemical properties; Measures of effectiveness; Physical properties; Quality control; Stripping (Pavements); Tensile strength; Test procedures; Testing; Tests
• Uncontrolled Terms: Effectiveness
• Old TRIS Terms: Boil test
• Subject Areas: Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00481031
• Record Type: Publication
• Report/Paper Numbers: FHWA/AL-105C/88, HPR 105C
• Contract Numbers: 930-111
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 31 1989 12:00AM