Development and validation of a 3D computational tool to describe concrete behaviour at mesoscale. Application to the alkali-silica reaction

摘要: This paper presents the development and validation of a 3D numerical tool called “finite element model for concrete analysis method” (FEMCAM). is established to quasi-brittle heterogeneous materials like concrete. last one here considered as biphasic material composed coarse aggregates embedded in mortar. A particular attention paid realistic generation particles sample. non-local Mazars used reproduce mortar behaviour. The this mesomodelling performed by comparison with experimental results on various tests (3-point bending tests, compressive “Brazilian” splitting tests). All these are study mechanical consequences alkali-silica reaction, main most famous chemical degradations structures such dams, pavements or bridges. At mesoscale, reaction characterized swelling reactive granular skeleton.