Abstract
In this paper, the low temperature strength of asphalt mixture is investigated based on indirect tensile (IDT) and semi-circular bending (SCB) tests and on two-dimensional numerical simulation. The values of maximum stress at crack tip in SCB simulation are obtained using commercial finite element software and cohesive zone modelling. Then, a correlation between the numerically determined maximum SCB stress and the strength value experimentally measured on IDT specimens is derived. It is found that the newly proposed relationship can be used to predict the asphalt mixtures strength of IDT un-notched specimens-based SCB fracture tests and contribute to better understanding of the low temperature strength properties of asphalt pavements.
Published Version
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