Multiscale micromechanical lattice modeling for cracking in hot mix asphalt

Title: Multiscale micromechanical lattice modeling for cracking in hot mix asphalt
Author(s): Z. Feng, P. Zhang, M. N. Guddati, Y. R. Kim
Paper category : conference
Book title: Fifth International RILEM Conference on Reflective Cracking in Pavements
Editor(s): C. Petit, I.L. Al-Qadi and A. Millien
Print-ISBN: 2-912143-47-0
e-ISBN: 2912143764
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 283 - 290
Total Pages: 8
Nb references: 7
Language: English

Abstract: Cracking performance of hot mix asphalt (HMA) mainly depends on the mechanical properties of its constituent materials. Study of such dependence is the key to effective characterization of the mechanical behavior of HMA. Previous studies predicted HMA behavior from the mixture properties obtained from extensive physical experiments. In this study, we devise a novel computational approach aimed at obtaining the mixture properties without having to resort to expensive experiments for each and every new mix. Instead, the mixture properties are obtained using a micromechanical lattice modeling methodology that links the component material properties to the mechanical properties of the mixture. Its three major components, i.e., a preprocessor for microstructure and mesh generation, a numerical simulator to analyze the resulting lattice network, and a graphical postprocessor for further analysis of simulation results are systematically developed and presented in this paper. In order to reduce the computing time, the multiscale approach is implemented and its effectiveness is illustrated by modeling a real indirect tensile test (IDT) specimen. The proposed methodology shows an excellent potential for accurate characterization of cracking in HMA.

Online publication: 2004-04-15
Publication type : full_text
Public price (Euros): 0.00