CHANGES IN STRUCTURE AND COMPOSITION OF ASPHALTS AND BITUMENS

THE STUDY REPORTED INVOLVES THE APPLICATION OF AN ELECTROSTATIC RESONANCE METHOD FOR DETERMINING THE MODULUS OF ELASTICITY /YOUNGS/ AND THE COEFFICIENT OF INTERNAL BREAKDOWN /FREQUENCY OF THE ORDER OF 10 000 HZ/ AT WIDE TEMPERATURE RANGES. NATURAL ASPHALT, AND DISTILLED AND OXIDIZED PETROLEUM BITUMENS WERE STUDIED. RESULTS SHOW A PARALLEL VARIATION BETWEEN THE FRAASS BREAKING POINT AND THE TRANSITION POINT, WHICH LAST WAS CONSTANTLY 15-20 C BELOW THE FIRST. /RRL/

• Supplemental Notes:
  • Vol34, No287, PP549-565, 22FIG, 5TAB, 17REF
• Authors:
  • Butta, E
  • CAROTI, L
  • Depetris, S
• Publication Date: 1965-6

Media Info

• Serial:
  • Riv Strada /Italy/

Subject/Index Terms

• TRT Terms: Asphalt; Bitumen; Coefficients; Crude oil; Distillation; Elasticity (Mechanics); Electrostatics; Materials selection; Modulus of elasticity; Oxidation; Resonance; Structures; Temperature; Viscosity
• Uncontrolled Terms: Change
• Geographic Terms: Italy
• Old TRIS Terms: Determination; Internal breakdown; Natural asphalts
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 00210521
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Nov 1 1994 12:00AM