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Abstract: The design of fbre reinforced shotcrete (FRS) linings for tunnels or mines is commonly based on the well-known and widely recognised Q-System or Barton charts. This performance based design approach accesses the results of experimental tests, carried out on panel specimens according to existing standards or guidelines. This is different to the general methodology to access and determine the...
Abstract: The fibre reinforced concrete (FRC) in question is a short fibre composite, where the matrix is a quasi-brittle material: concrete, and the fibres are made of different materials (e.g. steel, polypropylene, etc.) with different shapes (e.g. round, oval, etc.), random but uniformly distributed, relatively short fibres. The synthetic fibers started to spread in the industry in the last decades,...