Comparative Evaluation of Mechanical Properties of Fibre-Reinforced Concrete and Approach to Modelling of Bearing Capacity Ground Slab

  • Oldrich Sucharda VSB-Technical University of Ostrava Faculty of Civil Engineering Department of Structural Mechanics
  • Vlastimil Bilek VSB-Technical University of Ostrava Faculty of Civil Engineering Department of Building Materials and Diagnostics of Structures
  • Martina Smirakova VSB-Technical University of Ostrava Faculty of Civil Engineering Department of Building Structures
  • Jan Kubosek VSB-Technical University of Ostrava Faculty of Civil Engineering Department of Building Structures
  • Radim Cajka VSB-Technical University of Ostrava Faculty of Civil Engineering Department of Building Structures

Abstract

The use of steel fibre-reinforced concrete is becoming gradually widespread in the engineering design of buildings. Typical cases include concrete foundations or floors. The actual design approach is often different. The proposal significantly encompasses the knowledge and range of the material properties of steel fibre-reinforced concrete. This article presents a comprehensive research programme, which has been focused on extensive laboratory testing, in situ testing and advanced numerical modelling using computing models and nonlinear models of concrete. It aims at a comprehensive description of the material properties of concrete, according to the degree of reinforcement, using 8 types of laboratory tests for description. In total, over 74 specified laboratory tests and four slab tests in situ are carried out. Selected evaluated material properties are also provided for the regression curve according to the degree of reinforcement, 0 to 3%. Subsequently, the detailed description of steel fibre is used in advanced modelling of tests of concrete slabs in situ. Numerical models simulate the behaviour of the steel fibre-reinforced concrete base structure in the interaction with the subsoil, where the objective was to verify the total carrying capacity of the slab structure.

Keywords

steel fibre-reinforced concrete, slab, mechanical parameters, bending test, finite element method
Published
01-06-2017
How to Cite
SUCHARDA, Oldrich et al. Comparative Evaluation of Mechanical Properties of Fibre-Reinforced Concrete and Approach to Modelling of Bearing Capacity Ground Slab. Periodica Polytechnica Civil Engineering, [S.l.], june 2017. ISSN 1587-3773. Available at: <https://pp.bme.hu/ci/article/view/10688>. Date accessed: 26 sep. 2017. doi: https://doi.org/10.3311/PPci.10688.
Section
Research Article