Influencia del contenido de finos del hormigón en la respuesta estructural a flexión y cortante de vigas de hormigón armado

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Abstract

This paper presents an experimental study on the flexural and shear behavior of reinforced concrete beams with a fines content (275 kg/m3) higher than the limit value allowed by the Spanish Concrete Code EHE-08 (175 kg/m3). In the studied range, the fines content scarcely affected the flexural response. The shear strength of the beams with a high content of fines was lower than that of the beams cast with conventional concrete, especially for those with a high longitudinal internal reinforcement ratio and with transversal stirrups, where the reduction of the ultimate load was up to 23 %. Such a reduction is considered due to the reduction of mechanical properties of concrete and that of the aggregate interlock along the crack length. Finally, the experimental results have allowed verifying a numerical model for the non-linear analysis of RC members to accurately predict the influence of the amount of fine aggregate on the structural response.

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Ferreira, D., Oller, E., Bairán, J. M., Carrascón, S., & Marí, A. (2015). Influencia del contenido de finos del hormigón en la respuesta estructural a flexión y cortante de vigas de hormigón armado. Informes de La Construccion, 67(539). https://doi.org/10.3989/ic.14.039

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