Individual steel fibres as well as hybrid combinations of
steel and non-metallic (polyester, polypropylene and glass) fibres were evaluated for their influence on plastic shrinkage cracking. Results
showed that hybrid fibres were most effective in reducing shrinkage cracks. Among the hybrid fibre combinations, the steel and polyester
combination was found to reduce plastic shrinkage cracks by more than 99% compared to the plain concrete. Increased fibre availability
and low stress levels at early ages were the main factors contributing to the good performance of hybrid fibre mixtures.
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