Investigation of the microstructural fracture behaviour of asphalt mixtures using the finite element method

摘要: Abstract To limit and control the degradation of asphalt pavements to increase durability layers, a thorough understanding mechanical pavement response is necessary. As contribution, it imperative investigate fracture behaviours mixtures. This paper applies two-dimensional (2D) cohesive zone modeling (CZM) techniques simulate microscale crack initiation propagation within X-ray computed tomography (X-ray CT) scanning digital image processing (DIP) were applied reconstruct microstructure specimens. Finite element (FE) simulations conducted quasi-static indirect tensile test (IDT) with implementation 2D bilinear model. The FE models optimised validated based on experimental results. model was then used effect temperature air voids behaviour results show that more significant damage observed in broader areas outside main trajectory as increased range considered this study (−10 °C, 0 °C, +10 °C). aggregate-mortar interface exhibited than bulk mortar. deformation which are defined those not crossed by final have no maximum reaction force at temperatures above 0 °C. Also, found extend time failure. contribute current research mixtures future investigations recommended facilitate establishment an mixture design method evaluation failure mechanisms.