Abstract
Fibre-reinforced concrete is a modern composite material. Steel fibres are often used as scattered reinforcement in cement composites. We can achieve anisotropic final products by orienting the fibres, i.e. higher strength in the required direction. One of the ways, how to control the orientation of ferromagnetic fibre in composites, is a non-destructive method based on mutual induction. The advantage of non-destructive testing is, among other things, the possibility of application to fresh cement mixtures. This paper presents a fast and effective non-destructive measuring method of fibres orientation degree and fibre volume in cementitious composites. Furthermore, the measurement of fibres oriented at different angles and different fibre volumes is shown.
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