ABSTRACT
The reasons for using SFRS, including the way a SFRS performs in comparison to plain shotcrete as a support element in mining tunnels, are discussed. The mechanisms by which steel fibres reinforce shotcrete and the need for specifying performance criteria are highlighted. A description of current testing procedures along with a critique of their suitability are included and are accompanied by a summary of international recommendations on suitable performance classifications. Finally recommendations on the practical considerations necessary to ensure good quality in-place SFRS are made including a calculation method for determining minimum steel fibre dosages.
