Monotonic and cyclic pull-out behaviour of 3D and 5D hooked-end steel fibres from a concrete matrix

© 2018 Czech Technical University in Prague. All rights reserved. This paper presents an experimental program investigating the fatigue behaviour of steel fibre reinforced concrete (SFRC). 30 monotonic and cyclic pull-out tests of hooked-end steel fibres, individually embedded in concrete, are performed. The three main investigated parameters are the type of end-hook, the embedded length and the fibre's inclination. The first two parameters have an effect on the pull-out resistance, the influence of the third is less distinct. The pull-out tests are combined with two advanced non-destructive testing (NDT) methods, namely the Acoustic Emission technique and X-ray microfocus Computed Tomography. The displacements increase under cyclic loading with constant load levels, with the rate and AE measurements depending on the load pattern. The NDT methods lead to a better understanding of the pull-out behaviour and deviating results.

ISBN:978-80-01-06401-6

Publication year:2018

Accessibility:Open