HOT ROLLED ASPHALT: EFFECT OF BINDER PROPERTIES ON RESISTANCE TO DEFORMATION

Serious deformation has occurred in recent years on certain heavily-trafficked roads with rolled asphalt surfacing. The performance of this material is dependent on many compositional factors with the rheological properties of the binder being among the most important. The report considers those properties of binders that most affect the resistance to deformation of rolled asphalt. Thirteen binders were studied and mixtures containing them were subjected to design tests from BS 594: 1973 and the wheel-tracking test. These laboratory mechanical tests show that, within the range of binders tested, significant improvements in resistance to deformation can be achieved over a range of high road temperatures by increasing the softening point of the binder, irrespective of its penetration at 25 degrees C. A suggested specification for a "heavy duty" bitumen is based on a softening point (r & b) to BS 4692 of 63 + or - 5 degrees C and a penetration at 25 degrees C to BS 4691, of 40 + or = 10. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02667045
• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Jacobs, F A
• Publication Date: 1981

Media Info

• Features: Figures; References; Tables;
• Pagination: 17 p.
• Serial:
  • Publication of: Transport and Road Research Laboratory
  • Publisher: Transport and Road Research Laboratory (TRRL)
  • ISSN: 0266-7045

Subject/Index Terms

• TRT Terms: Asphalt pavements; Binders; Bituminous mixtures; Deformation; Durability; Hot rolling; Improvements; Pendulum tests; Rheological properties; Rheology; Rolled asphalt; Rutting; Softening point; Strength of materials; Surfaces; Temperature; Tests
• Old TRIS Terms: Resistance; Tracking (Wheel)
• ITRD Terms: 4948: Binder; 4967: Bituminous mixture; 5595: Deformation; 5910: Durability; 9108: Improvement; 6285: Penetration; 5442: Rheology; 4989: Rolled asphalt; 3081: Rutting (wheel); 5272: Softening; 5544: Strength (mater); 6438: Surface; 6722: Temperature; 6255: Test
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00345888
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: LR 1003 Monograph
• Files: ITRD, TRIS, ATRI
• Created Date: Feb 27 1982 12:00AM