Abstract
In this paper, the residual strengths and flexural toughness of fibre reinforced concretes (FRC), determined from the load - CMOD response obtained by mean of flexural test conducted according to EN 14651, are related experimentally through non-linear fits, which depend on the fibres content and crack opening. On the other hand, it is experimentally verified that there is a linear relationship between the flexural toughness and the energy absorption capacity of FRCs determined by testing square panels following EN 14488 – 5.
Using the proposed relationships, the residual strengths of FRCs have been estimated from the energy absorption capacity, with differences between experimental and estimated values less than 3%.
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References
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Acknowlegements
This research was supported by Fondecyt Project “Use of the Generalized Barcelona Test for Characterization and Quality Control of Fibre Reinforced Shotcretes in Underground Mining Works”, N°1150881.
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Carmona, S., Molins, C. (2022). Using Energy Absorption Capacity to Determine Residual Resistances of FRC. In: Serna, P., Llano-Torre, A., Martí-Vargas, J.R., Navarro-Gregori, J. (eds) Fibre Reinforced Concrete: Improvements and Innovations II. BEFIB 2021. RILEM Bookseries, vol 36. Springer, Cham. https://doi.org/10.1007/978-3-030-83719-8_52
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DOI: https://doi.org/10.1007/978-3-030-83719-8_52
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