What are the benefits of high strength premium fibres?
With the exception of the Twincone™ fibre, all steel fibres available on the market are pulled out of the concrete matrix in ultimate limit state. As the majority of the fibres have deformed shapes, the material must yield in these deformation points in order to allow pull-out. Therefore the higher the yield or the tensile strength of the base material, the higher will be the pull-out resistance and the better the anchorage. High strength premium fibres show higher performance than normal grade fibres. Therefore quite often it makes sense to use these fibres in higher strength concrete.
