Anisotropic tensile behaviour of UHPFRC: meso-scale model and experimental validation

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2019

Autores

Sandra Nunes (Autor) FEUP; Mário Jorge Pimentel (Autor) FEUP; Amin Abrishambaf (Autor) FEUP

Ata de Conferência Internacional

Título: Proceedings of the 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures

Páginas: 1-10

Outras Informações

ID Authenticus: P-00R-MZ0

DOI: 10.21012/fc10.235518

Abstract (EN): Ultra-High Performance Fibre-Reinforced cementitious Composites (UHPFRC) designates a family of materials constituted by a compact cementitious matrix reinforced with short high-strength steel fibres. A model is presented based on a meso-level description of the involved mechanics for simulating the direction-dependent tensile response of the UHPFRC. The determination of the relevant material properties and model parameters is discussed. The model is validated with a set of direct tensile tests performed on specimens with varying fibre content and orientation and is shown to be capable of simulating the full tensile responses of both strainsoftening and strain-hardening UHPFRCs. Finally, an outlook is given on how the meso-mechanical model can be used to provide the input parameters for the engineering stress-deformation curves describing the anisotropic tensile behaviour of the material and that are suitable for analysis and design of UHPFRC structures.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10