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Fracture mechanics of reactive powder concrete: Material modelling and experimental investigations
Reactive powder concrete (RPC) is made of very a fine matrix with short steel fibres. To optimise the mechanical behaviour, the influence of the orientation of fibres due to the process of casting must be studied. By considering a locally oriented mass of fibres as an inclusion embedded in a homogeneous medium of concrete, the Eshelby's inclusion model provides a description of the micro-structural strain concentration and permits to develop a model for crack initiation based on equivalent strain criterion. By using the micro-plane model coupled with damage theory we can reproduce the crack propagation in relation with the orientation of the fibres. Specimens of RPC with a given orientation of fibres, tested under uniaxial tension, confirm such a role played by a locally anisotropic elastic behaviour on crack initiation, and on the bridging action during crack progation.
Fracture mechanics of reactive powder concrete: Material modelling and experimental investigations
Reactive powder concrete (RPC) is made of very a fine matrix with short steel fibres. To optimise the mechanical behaviour, the influence of the orientation of fibres due to the process of casting must be studied. By considering a locally oriented mass of fibres as an inclusion embedded in a homogeneous medium of concrete, the Eshelby's inclusion model provides a description of the micro-structural strain concentration and permits to develop a model for crack initiation based on equivalent strain criterion. By using the micro-plane model coupled with damage theory we can reproduce the crack propagation in relation with the orientation of the fibres. Specimens of RPC with a given orientation of fibres, tested under uniaxial tension, confirm such a role played by a locally anisotropic elastic behaviour on crack initiation, and on the bridging action during crack progation.
Fracture mechanics of reactive powder concrete: Material modelling and experimental investigations
Bayard, O. (Autor:in) / Ple, O. (Autor:in)
Engineering Fracture Mechanics ; 70 ; 839-851
2003
13 Seiten, 24 Quellen
Aufsatz (Zeitschrift)
Englisch
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