Modelling the quasi-static behaviour of bituminous material using a cohesive zone model

• Published in: Engineering fracture mechanics 2010-09, Vol.77 (13), p.2403-2418
• Main Authors: Tabaković, Amir, Karač, Aleksandar, Ivanković, Alojz, Gibney, Amanda, McNally, Ciarán, Gilchrist, Michael D.
• Format: Article
• Language: English
• Subjects: Applied sciences; Binder course mortar; Bituminous; Buildings. Public works; Cohesion; Computer simulation; Concretes. Mortars. Grouts; Crack initiation; Exact sciences and technology; Finite volume method; Fracture mechanics; Fracture mechanics (crack, fatigue, damage...); Fundamental areas of phenomenology (including applications); Indirect tensile loading; Materials; Mathematical models; Modelling; Physics; Solid mechanics; Static elasticity (thermoelasticity...); Stress strain curves; Structural and continuum mechanics; Three-point bend test
• ISSN: 0013-7944; 1873-7315
• DOI: 10.1016/j.engfracmech.2010.06.023

This paper investigates the applicability of a cohesive zone model for simulating the performance of bituminous material subjected to quasi-static loading. The Dugdale traction law was implemented within a finite volume code in order to simulate the binder course mortar material response when subjected to indirect tensile loading. A uniaxial tensile test and a three-point bend test were employed to determine initial stress–strain curves at different test rates and the cohesive zone parameters (specifically, fracture energy and cohesive strength). Numerical results agree well with the experimental data up to the peak load and onset of fracture, demonstrating the value of the cohesive zone modelling technique in successfully predicting fracture initiation and maximum material strength.