Volume 22, Issue S1 p. E634-E654
TECHNICAL PAPER

Concrete compressive strength: From material characterization to a structural value

Francesco Moccia

Corresponding Author

Francesco Moccia

Ecole Polytechnique Fédérale de Lausanne, School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland

Correspondence

Francesco Moccia, Ecole Polytechnique Fédérale de Lausanne, School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland.

Email: francesco.moccia@epfl.ch

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Qianhui Yu

Qianhui Yu

Ecole Polytechnique Fédérale de Lausanne, School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland

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Miguel Fernández Ruiz

Miguel Fernández Ruiz

Ecole Polytechnique Fédérale de Lausanne, School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland

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Aurelio Muttoni

Aurelio Muttoni

Ecole Polytechnique Fédérale de Lausanne, School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland

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First published: 24 July 2020
Citations: 10

Discussion on this paper must be submitted within two months of the print publication. The discussion will then be published in print, along with the authors’ closure, if any, approximately nine months after the print publication.

Funding information: Swiss Federal Roads Office (FEDRO), Grant/Award Number: AGB-2018-001

Abstract

The compressive resistance of concrete in new structures is usually characterized on the basis of tests performed on concrete cylinders or cubes under relatively rapid loading conditions. Although efficient for material characterization, these tests do not acknowledge a number of phenomena potentially influencing the compressive resistance of concrete in actual structures. For this reason, when performing a structural analysis, strength reduction factors are usually considered in codes of practice modifying the uniaxial strength of material tests. In this paper, a detailed investigation of the influence of material brittleness and internal stress redistributions on the structural response of reinforced concrete members is presented. This work is based on a number of theoretical considerations and supported by the experimental results of more than 400 reinforced concrete columns tested with or without eccentricity and gathered from the literature. The results show the pertinence of considering a brittleness factor in the calculation of the structural resistance of reinforced concrete columns and compression zones of beams. The results of this work are eventually formulated in terms of code-like proposals, currently considered in the draft of the new Eurocode 2 (prEN 1992-1-1:2018).

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