Experimental validation of the damage-plasticity modeling concept for normal strength concrete in fire: Fid-Bau Portal

Experimental validation of the damage-plasticity modeling concept for normal strength concrete in fire

Neuenschwander, Martin / Scandella, Claudio / Knobloch, Markus / Fontana, Mario

This paper aims to investigate with strain-rate controlled uniaxial cyclic compression tests the softening behavior of concrete and its elastic stiffness degradation with increasing plastic straining.

Design/methodology/approach

Such tests at ambient temperature show that concrete exhibits the phenomenon of elastic stiffness degradation, which can be captured by damage-plasticity models.

Findings

The experimentally derived evolutions of the elastic stiffness with plastic strain confirm the suitability of the damage-plasticity modeling concept for concrete in compression at elevated temperatures and provide novel calibration data.

Originality/value

Temperature-dependent concrete models implementing this modeling concept are often used presently in structural fire engineering, despite the lack of experiment-based validation data.

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Experimental validation of the damage-plasticity modeling concept for normal strength concrete in fire

Neuenschwander, Martin / Scandella, Claudio / Knobloch, Markus / Fontana, Mario

Abstract

Design/methodology/approach

Such tests at ambient temperature show that concrete exhibits the phenomenon of elastic stiffness degradation, which can be captured by damage-plasticity models.

Findings

Originality/value

Temperature-dependent concrete models implementing this modeling concept are often used presently in structural fire engineering, despite the lack of experiment-based validation data.

Experimental validation of the damage-plasticity modeling concept for normal strength concrete in fire

Neuenschwander, Martin / Scandella, Claudio / Knobloch, Markus / Fontana, Mario

Abstract

Design/methodology/approach

Such tests at ambient temperature show that concrete exhibits the phenomenon of elastic stiffness degradation, which can be captured by damage-plasticity models.

Findings

Originality/value

Temperature-dependent concrete models implementing this modeling concept are often used presently in structural fire engineering, despite the lack of experiment-based validation data.