Impacts of asphalt laboratory compaction techniques: does it really affect the master curve?

The research conducted in this paper focused on developing the master curves for Brisbane City Council's asphalt mix B771. An investigation into the laboratory compaction methodology for sample preparation and modulus testing and the associated impacts on the master curve were undertaken. Four common laboratory compacting devices used in Australia were assessed, under a range of temperatures and frequency to produce master curves representing the resulting asphalts performance characteristics for the compaction methodology. The mixture selected, B771, is produced at the Brisbane City Council’s Eagle Farm plant and consists of 15% Reclaimed Asphalt Pavement (RAP) as an aggregate and binder substitute within the mix. Encountered modulus variances during testing, did not affect the predictive capabilities of the master curves, as all the compaction methods produced master curves, which behaved relatively similar at the intermediate temperatures of 20-30°C. This allowed the pavements average in-service modulus |E*| to be predicted as approximately 6700MPa for a typical Sunshine Coast road condition of 30°C and vehicle traffic of 50km/hr. The catalogue provides a better understanding of characteristics and compliance capabilities of the tested asphalt with the new mechanistic pavement design.

• Record URL:
  http://arrbknowledge.com
• Authors:
  • Johnston, C -
  • Wiegand, A
  • Tighe, S
  • Yeaman, J
• Conference:
  • AAPA International Flexible Pavements Conference, 16th, 2015, Gold Coast, Queensland, Australia
• Publication Date: 2015-9

Language

• English

Media Info

• Pagination: 14p
• Monograph Title: Innovation driving value: AAPA International Flexible Pavements Conference, 13-16 September 2015, Gold Coast, Queensland

Subject/Index Terms

• TRT Terms: Asphalt pavements; Bituminous materials; Bituminous pavements; Compaction; Mechanistic design; Pavement performance; Speed; Temperature; Waste products (Materials)
• Uncontrolled Terms: Materials technology (asphalt/bitumen/concrete); Pavement technology
• Geographic Terms: Australia; Brisbane, Queensland
• ATRI Terms: Asphalt; Compaction; Mechanistic design; Pavement performance; Reclaimed asphalt pavement; Speed; Temperature
• ITRD Terms: 9011: Design (overall design); 4573: Recycling (mater)
• Subject Areas: Highways; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01588883
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Jan 29 2016 10:22AM