SYMPOSIA PAPER Published: 01 January 2006
STP37627S

C-φ Characterization Model for Design of Asphalt Mixtures and Asphalt Pavements

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This paper reports the results of a research effort initiated in the early 1990s to develop a C-φ (cohesion-angle of friction) characterization model for the design of asphalt mixtures and asphalt pavements. It is demonstrated that, since the model is based on the fundamental material properties represented by C and φ, it can derive analytically other asphalt mix design parameters such as Marshall stability and flow, and indirect tensile strength. The C-φ characterization model therefore offers a useful basis for the development of a comprehensive design framework that integrates asphalt mix design with asphalt pavement structural design. To demonstrate this capability, the research developed an empirical-mechanistic rutting prediction model of asphalt pavement layer using the C-φ characterization model. In addition, the model allows stresses and strains under design loading to be computed, which can be applied as input to structural analysis for asphalt material selection and pavement thickness design.

Author Information

Fwa, TF
National University of Singapore, Singapore
Tan, SA
National University of Singapore, Singapore
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Details
Developed by Committee: D04
Pages: 115–128
DOI: 10.1520/STP37627S
ISBN-EB: 978-0-8031-5515-2
ISBN-13: 978-0-8031-3495-9