The application of laboratory derived performance measures at project level

The empirical performance measures used in asphalt mix design can only be relied on when we are building similar structures in similar environments. The paper details a major project in which many elements were changed; new aggregate and bitumen sources were used, in an unfamiliar thick asphalt pavement structure. The specified mix design was based on Marshall. Additional performance related testing was carried out to provide data to assist mix component selection based on fundamental properties stiffness, moisture sensitivity, fatigue and durability, and deformation resistance. The work highlights conflict between the empirical and performance related specifications. The challenge is the resolution of this conflict; the balancing of the empirical limits derived over decades against the information derived from laboratory performance measures. The use of the asphalt dynamic modulus master curve derived using the Simple Performance Test apparatus, and the bitumen complex shear modulus master curve using the Dynamic Shear Rheometer has given insights that will rationalize the material selection decisions. The use of these tools puts us in a position us to exploit the vast international investment in long term performance studies. (a) For the covering record of the conference, please refer to ITRD no. E218387.

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  • Publication Date: 2009-10


  • English

Media Info

  • Pagination: 10P (DAY 2, SESSION 3)
  • Monograph Title: Australian Asphalt Paving Association thirteenth international flexible pavements conference, Sunday 11th - Wednesday 14th October, Surfers Paradise, Queensland, Australia

Subject/Index Terms

Filing Info

  • Accession Number: 01153057
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Mar 23 2010 9:14AM