STRUCTURE IDENTIFICATION OF METAL FIBRE REINFORCED CEMENTITIOUS COMPOSITES

Mechanical properties of metal fibre reinforced cementitious composites, because of the danger of micro- and macro-cracking due to the mechanism of quasi-brittle fracture, depend strongly on the macrostructural homogeneity and directional distribution of fibres. Thus some low invasive or quite non-destructive measurement techniques, together with non-expensive, quick, robust and reliable algorithms for evaluation of corresponding material parameters, are needed. This paper demonstrates some promising classes of such approaches, based on image processing and indirect magnetic and electromagnetic measurements, with the aim of the development of general methodology for technical evaluation of such materials.