FUNCTIONAL ASPHALT PROPERTIES AND SPECIFICATIONS

The performance characteristics of an asphalt over its entire service temperature range can be obtained for just two specification tests: penetration at 25 deg C and viscosity at 60 deg C. With the aid of the bitumen test data chart (btdc), analysis of the test data of 68 currently produced asphalts from widely different souces shows a consistent relationship between viscosity at 60 deg C and any two or more penetration values at different temperatues. This relationship provides a reliable graphical means to determine the penetration at 50 deg C, one of the entrance parameters of Gaw's "nomograph for predicting cracking temperature" and thus eliminates the need for actual penetration measurement at this relatively low temperature, which, in practice, can be inaccurate. Furthermore, such erroneous results are clearly identified when using btdc. As an added tool to the above mentioned nomograph, an extended version of btdc, to include a simple nomograph, permits direct estimation of the cracking temperature. Penetration and viscosity values after accelerated ageing can be used as alternative input data for the prediction of low temperature properties. The remaining functional property of an asphalt would be viscosity at 135 deg C which has proved an effective control of asphalt consistency at mixing and compaction temperatures. (a) (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0919868169
• Supplemental Notes:
  • Proceedings of the 26th Annual Conference of the Canadian Technical Asphalt Association.
• Corporate Authors:

  Multiscience Publications Limited

  1253 McGill College, Suite 175
  Montreal, PQ  Canada 
• Authors:
  • Corkill, J
  • Kopvillem, O
• Conference:
  • Proceedings of the 26th Annual Conference of the Canadian Technical Asphalt Association.
• Publication Date: 1981-11

Media Info

• Features: Figures; References;
• Pagination: p. 24-35

Subject/Index Terms

• TRT Terms: Accelerated weathering; Asphalt pavements; Base course (Pavements); Bitumen; Compaction; Control; Correlation analysis; Data analysis; Forecasting; Fracture mechanics; Materials tests; Mathematical analysis; Mixing; Nomographs; Properties of materials; Soil stabilization; Specifications; Stabilized materials; Temperature; Viscosity
• Old TRIS Terms: Asphalt pavement specifications; Bitumen tests
• ITRD Terms: 5292: Ageing; 9001: Behaviour; 4963: Bitumen; 6486: Chart; 3686: Compaction; 8525: Conference; 5211: Cracking; 6296: Dynamic penetration test; 132: Forecast; 3649: Mixer; 6285: Penetration; 6722: Temperature; 6710: Temperature measurement; 5936: Viscosity
• Subject Areas: Data and Information Technology; Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00369809
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• ISBN: 0-919868-16-9
• Report/Paper Numbers: Proceeding
• Files: ITRD, TRIS
• Created Date: Feb 28 1983 12:00AM