VISCOSITY CHARACTERIZATION OF ASPHALT CEMENT
THERE EXISTS AN INHERENT RELATIONSHIP BETWEEN THE COMMONLY USED CONSISTENCY TESTS (VISCOSITY AT 140 F (60C), VISCOSITY AT 275 F (135C), AND PENETRATION AT 77 F (25C)) AS APPLIED TO ASPHALT CEMENTS USED IN PAVING. BASED ON DATA ACCUMU- LATED FROM 84 WORLDWIDE CRUDE SOURCES OF ASPHALT, IT IS SHOWN THAT THE VISCOSITY AT 140 F IS RELATED TO EACH OF THE OTHER TWO TESTS BY POWER LAW LOGARITHMIC FUNCTION, AND THAT THE OVERALL RELATIONSHIP IS REPRESENTED BY A NESTING OF LINES. WITH THE VISCOSITY AT 140 F AS THE INDEPENDENT VARIABLE, THERE EXIST SIGNIFICANT DIFFERENCES IN THE PENETRATION (77 F) AND VISCOSITY (275 F) LEVELS BUT WITH ONLY MINOR DIFFERENCES IN THE SLOPE OF THE LINES. THUS, THE RELATIONSHIPS BETWEEN THIS VISCOSITY AND THE OTHER TWO CONSISTANCY TESTS SERVE TO IDENTIFY THE VISCOSITY GRADE AS WELL AS TO INDICATE THE SOURCE OF THE ASPHALT, WHICH IN TURN RELATES TO TEMPERATURE SUSCEPTIBILITY PROPERTIES. /AUTHOR/
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Supplemental Notes:
- ASTM STP 532
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Authors:
- Corbett, L W
- Schweyer, H E
- Publication Date: 1973-6
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 40-51
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Serial:
- ASTM Special Technical Publications
- Publisher: American Society for Testing and Materials (ASTM)
Subject/Index Terms
- TRT Terms: Asphalt; Asphalt cement; Consistency; Pendulum tests; Temperature; Testing; Viscosity
- Uncontrolled Terms: Relationships
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00211836
- Record Type: Publication
- Files: TRIS
- Created Date: Apr 27 1974 12:00AM