(S)FRC in EC2 and in Model Code 2020

di Prisco, Marco (2023) (S)FRC in EC2 and in Model Code 2020. Concrete Structures, 24. pp. 36-41. ISSN 1586-0361

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Abstract

The current Eurocodes are under revision and estimated to be available in 2025. For the first time in the European history, Eurocode 2: “Design of concrete structures” will be extended with a European-wide harmonized annex, covering steel fibre reinforced concrete. The work on Annex L – Steel Fibre Reinforced Concrete has already started in 2012 and significantly benefitted from the work carried out for the fib Model Code of Concrete Structures 2010. The use of performance classes of Model Code 2010 as well as parts of the design approach were the basis for the new steel fibre reinforced concrete annex. In addition, the latest state of science has been used to prepare a powerful but, in the same way, easy-to-use design document for structural engineers, covering both ultimate and serviceability limit states for steel fibre reinforced structures, with or without reinforcement. At the same time the new Model Code 2020, mainly concentrated on existing structures and sustainability, extended to all types of fibres as the previous Model Code, has tried to look at FRC as to a generalized concrete, able to exhibit a significant toughness in uniaxial tension, integrating its resistance equations to those of conventional concrete, guaranteeing in many structural cases a sustainable choice for the reinforcement and paying more attention to high- and Ultra-high performance materials and at the same time to hybrid solutions for the reinforcement.

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