Abstract
This paper develops a mesoscale finite element method for realistic modeling of complex cohesive fracture in asphalt mixture with a given gradation. A random aggregate generation and packing algorithm is employed to create 2D and 3D heterogeneous asphalt mixture specimens, and cohesive elements with tension/shear softening laws are inserted into both mastic and aggregate-mastic interfaces to simulate crack initiation and propagation. The nucleation and coalescence of microcracks and propagation of macrocracks in 2D and 3D specimens is realistically modeled in detail with a few important conclusions drawn. The effects of coarse aggregate distributions on performance of asphalt mixture are also evaluated.
Original language | English |
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Pages (from-to) | 114-122 |
Number of pages | 9 |
Journal | Procedia IUTAM |
Volume | 6 |
Early online date | 2 Apr 2013 |
DOIs | |
Publication status | Published - 2013 |
Externally published | Yes |