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Influence of confinement on high strength concrete behavior

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Abstract

An experimental program has been made in order to study the confined concrete behavior when its strength changes from traditional values to high strength values and with confinement levels ranging from 0% to values higher than 4%. The specimen shape and size have also been included as variables.

With the data experimentally achieved, the parameters that define the stress-strain curve for concrete were adjusted using a statistical methodology that gives us suitable approximation levels.

A stress-strain curve model is proposed, which lets us know precisely the confined concrete behavior up to high strain levels and analyze the material ductility.

The achieved improvement, thanks to the confinement, was quantified regarding the parameters that define the concrete behavior, particularly the maximum strength, the strain at the peak and the ductility.

Résumé

Un programme expérimental a été développé pour étudier le comportement du béton confiné avec une teneur en armature transversale de 0% à 4%. L'étude analyse des bétons de résistance entre 25 MPa et 100 MPa. D'autres variables ont été la forme et la dimension des éprouvettes.

Avec les résultats expérimentaux obtenus on a réalisé une analyse statistique pour définir les paramètres de la courbe Contrainte-déformation avec une bonne corrélation.

On a proposé un modèle de courbe Contrainte-déformation qui montre le comportement du béton à hautes performances confiné jusqu'à des niveaux de déformation très élevés, et qui permet l'analyse de la ductilité du matériau.

Les performances obtenues grâce au confinement ont été quantifiées d'après les paramètres qui définissent le comportement du béton, en particulier de sa résistance, de la déformation au pic et sa ductilité.

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Authors and Affiliations

  1. Universidad Politécnica de Valencia, Spain

    P. Serna Ros, S. A. Yazzar & A. Coca Calvo

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  1. P. Serna Ros
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  2. S. A. Yazzar
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  3. A. Coca Calvo
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Serna Ros, P., Yazzar, S.A. & Coca Calvo, A. Influence of confinement on high strength concrete behavior. Mat. Struct. 36, 439–447 (2003). https://doi.org/10.1007/BF02481523

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