AN INVERSE GLC STUDY OF ASPHALTS USED IN THE ZACA-WIGMORE EXPERIMENTAL ROAD TEST

INVERSE GAS LIQUID CHROMATOGRAPHY (GLC) WAS USED TO STUDY ASPHALTS EVALUATED IN THE ZACA-WIGMORE EXPERIMENTAL ROAD TEST. THE RETENTION BEHAVIOR OF A NUMBER OF TEST COMPOUNDS WAS DETERMINED ON THE ASPHALTS BOTH BEFORE AND AFTER OXIDATION WITHIN THE GLC COLUMN. THE RETENTION BEHAVIOR OF THE TEST COMPOUND PHENOL ON THE OXIDIZED ASPHALTS CORRELATED WITH THE PERFORMANCE OF THE ASPHALTS IN ROAD SERVICE, AND THIS WAS FURTHER SUPPORTED BY A SIMILAR CORRELATION WITH ACCELERATED WEATHERING DURABILITIES OF COATING-GRADE ASPHALTS. THE PHENOL TEST COMPOUND RETENTION DATA ON THE OXIDIZED ROAD ASPHALTS WERE ALSO FOUND TO RELATE TO CHANGES IN VISCOSITY AS MEASURED BY THE MICROFILM DURABILITY TEST. BECAUSE TEST COMPOUND RETENTION BEHAVIOR IS RELATED TO CHEMICAL COMPOSITION AND MOLECULAR ASSOCIATION FORCES OF THE ASPHALT, THE CORRELATION WITH PERFORMANCE AFFIRMS THE IMPORTANCE OF CHEMICAL COMPOSITION TO ASPHALT PERFORMANCE ON THE ROAD. /AUTHOR/

• Supplemental Notes:
  • Vol 36, pp 1-10, 4 FIG, 3 TAB, 9 REF
• Authors:
  • Davis, T C
  • Petersen, J C
• Conference:
  • Assoc Asphalt Paving Technol Proc
• Publication Date: 1967-2

Subject/Index Terms

• TRT Terms: Asphalt; Chemical composition; Durability; Gas chromatography; Microforms; Molecules; Oxidation; Performance; Phenol; Retaining walls; Testing; Viscosity; Weathering
• Old TRIS Terms: Microfilms; Retaining
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00210709
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 19 1994 12:00AM