Effect of Fiber Distribution and Orientation on the Response of Fiber-Reinforced Concrete
DOI:
https://doi.org/10.70567/mc.v42.ocsid8227Keywords:
Fiber reinforced concrete, fibers pull-out, composite model, fiber orientation and distributionAbstract
The increase in residual strength and crack control by the addition of steel fibres to concrete is due to the slip of the fibres that sew the cracks, and depends largely on the type, content, distribution, and orientation of the fibres in the concrete volume. The last two factors, in turn, depend on the first two and additionally, on the size and shape of the mould filling, the flowability of the matrix, and other factors, and are difficult to predict. The aim of this work is to numerically evaluate the effect of fibre distribution and orientation on the flexure response in order to analyse the validity of the simplifications usually made in the analysis. A meso model is used for steel fiber reinforced concrete. The model takes into account the direction and reorientation of the fibres in the direction of the crack opening.
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