Two-Step Approach to Prediction of Asphalt Concrete Modulus from Two-Phase Micromechanical Models

A two step approach is proposed to predict the modulus of asphalt concrete from existing micromechanical models. The asphalt concrete microstructure is represented by a two phase model, which consists of a large spherical aggregate particle surrounded by a spherical shell of fine aggregate filler binder mixture as the matrix. The fine aggregate filler binder mixture is further represented by a two phase model, which treats fine aggregate as a spherical inclusion and the mixture of filler and binder as the matrix. The modulus of asphalt concrete is predicted from the volumetric fractions. Poisson's ratios, and moduli of the aggregate and filler-binder mixture by applying the appropriate two phase models in two steps. An asphalt concrete and two mixtures that replicate the fine aggregate filler binder submixture and the filler binder submixture in the asphalt concrete have been tested for modulus. The test results show that the predicted results from the appropriate models reasonably approximate the measured results.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08991561
• Authors:
  • Li, Yongqi
  • Metcalf, John B
• Publication Date: 2005-8-1

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp407-415
• Serial:
  • Journal of Materials in Civil Engineering
  • Volume: 17
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 0899-1561
  • EISSN: 1943-5533
  • Serial URL: http://ascelibrary.org/journal/jmcee7

Subject/Index Terms

• TRT Terms: Asphalt concrete; Asphalt mixtures; Composite materials; Elasticity (Mechanics)
• Uncontrolled Terms: Micromechanics
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01002651
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 1 2005 8:04AM