Modeling HMA Bulk Specific Gravities: A Theoretical and Experimental Investigation

In bituminous mixes, a very important factor is bulk specific gravity, G sub mb. There is a strong dependence on the effective G sub mb, in compliance with a number of boundary conditions and obtained by suitable design and construction, by life cycle costs, contract requirements, and quality control/quality assurance procedures. There are many ways to perform G sub mb estimation, with within-method variance being appreciable. A critical issue is therefore the "transportability" of a G sub mb determined according to another standard's given standard. The research objective was to study relationships between G sub mb values determined through a given standard to G sub mb estimates determined through other standards. The author conducted experiments using five different methods after deriving a model. The elementary volumes that contribute to differences among the five considered methods were evaluated by the model. There is assumption of a tendency toward a common maximum value. There is analysis and interpretation of the results, and validation of the conceptual framework. There is derivation and analysis of use relationships between specific gravities determined by different methods. An algorithm well grounded in logic to solve the issue of G sub mb transportability was yielded through power asymptotic curve analysis.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19966814
• Authors:
  • Pratico, Filippo G
  • Moro, Antonino
  • Ammendola, Rachele
• Publication Date: 2009-5

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 115-122
• Serial:
  • International Journal of Pavement Research and Technology
  • Volume: 2
  • Issue Number: 3
  • Publisher: Chinese Society of Pavement Engineering
  • ISSN: 1996-6814
  • EISSN: 1997-1400
  • Serial URL: http://www.ijprt.org.tw/index.php
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Algorithms; Experiments; Hot mix asphalt; Mathematical models; Specific gravity; Theory
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 01145228
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 30 2009 8:54AM