Effect of microstructure heterogeneity shapes on constitutive behaviour of encapsulated self-healing cementitious materials

Self-healing cementitious materials with microcapsules are complex multiscale and multiphase materials. The random microstructure of these governs their mechanical transport behaviour. actual can be represented accurately a discrete lattice model, but computational restrictions mean that the size domain considered this approach is limited. By contrast, smeared approach, based on micromechanical formulation, provides an approximate representation material low costs. aim paper to compare simulations microcapsule-based self-healing system discrete-lattice smeared-micromechanical models, assess relative strengths weaknesses models for simulating distributed fracture healing in type material. A novel field generation technique used represent mortar specimen. meshes elements created by triangulation method determine input required model. also describes enhancement TUDelft model include extended considers both microcracking healing. findings from study provide insight into merits two modelling approaches.