Identification of mechanical and fracture properties of self-compacting concrete beams with different types of steel fibres using inverse analysis

Abstract

The application of self-compacting concrete has found wide use in practice. However, its application is often limited by lack of knowledge on material parameters gained from laboratory tests, which results in difficulties in the design of progressive building structures and buildings where non-linear finite element analysis should be used. The submitted paper presents results of identification of mechanical and fracture properties of selected self-compacting concrete beams applicable for non-linear finite element analyses. A procedure dealing with the determination of mechanical and fracture properties from an extensive series of tests on notched beams is also presented. The studied material is a high-performance concrete reinforced with two types and three volume ratios of steel fibres. An inverse analysis in combination with a multi-criterial analysis is used for evaluation of fracture-mechanical characteristics.