COMPARISON OF IN-PLACE VERSUS LABORATORY AGED HMA BINDER PROPERTIES. IN: AIRFIELD PAVEMENTS. CHALLENGES AND NEW TECHNOLOGIES

The purpose of this paper is to discuss properties of asphalt binder as some of the contributing factors that affect the performance and life expectancy of hot mix asphalt (HMA). Through analysis of test data from laboratory aged binder and recovered in place binder helps to create selection criteria of proper type and grade of binder for future projects. In this paper, HMA binder properties from laboratory aged specimens were compared to those extracted from field specimens. The properties analyzed from these specimens were absolute viscosity, penetration, bending beam rheometer creep stiffness, bending beam rheometer (BBR) m-value and direct tension failure strain. The results and conclusions of this analysis are presented in the paper. However, significant differences between laboratory penetration test results and the inconclusive evidence in the results of the BBR creep stiffness and BBR m value tests between the in-place and laboratory-aged samples show that laboratory tests may not reflect the changes in asphalt binder during its performance life.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 327-333

Subject/Index Terms

Filing Info

  • Accession Number: 00975014
  • Record Type: Publication
  • ISBN: 0784407118
  • Files: TRIS
  • Created Date: Jun 23 2004 12:00AM