RHEOLOGICAL PROPERTIES OF WEATHERED ASPHALTS EXTRACTED FROM SPRAYED SEALS NEARING DISTRESS CONDITION

A sprayed seal is achieved by rolling aggregate into a layer of sprayed bitumen. This form of construction as a surface on a flexible pavement is used to provide a low cost all-weather roadway for low traffic volumes and is widely used in Australia. When the surfacing has been correctly designed, constructed and placed on a sound pavement, the life of the surfacing depends primarily on the resistance of the bituminous binder to hardening. With aging, bitumen hardens and eventually a critical hardness value is reached that causes it to become brittle and fracture under low temperatures and strains imposed by service conditions. This paper presents the viscoelastic properties of service-aged bitumens and their relationship with surfacing condition.

• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Maccarrone, S
• Conference:
  • Association of Asphalt Paving Technologists Proc
• Publication Date: 1987

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 654-687
• Serial:
  • Volume: 56

Subject/Index Terms

• TRT Terms: Age hardening; Asphalt; Bitumen; Bituminous materials; Evaluation; Low volume roads; Pavements; Rheological properties; Seal coats; Service life; Surface treating; Viscoelasticity; Weathering
• Uncontrolled Terms: Pavement conditions
• Geographic Terms: Australia
• Old TRIS Terms: Bituminous surfacing
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00739813
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Aug 29 1997 12:00AM