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AbstractThis paper examines the mechanical behaviour of metal-fibre reinforced concretes (MFRCs) on two different scales: that of the material and that of the structure. As regards the intrinsic mechanical behaviour of the material, defined as the behaviour observed before the stage of crack localization, it is shown that with MFRCs having the workability of a concrete for use in reinforced or prestressed concrete structures, the compressive and tensile strengths are in all cases less than those of a conventional concrete and their ductility is only slightly greater. On the other hand, on the scale of structure, in other words after crack localization, the fibres transmit forces across a macrocrack just like the reinforcements of a reinforced concrete. It is, therefore, on the scale of the structure, and not on that of the material, that the metal fibres used in this study add ductility.
AbstractThis paper examines the mechanical behaviour of metal-fibre reinforced concretes (MFRCs) on two different scales: that of the material and that of the structure. As regards the intrinsic mechanical behaviour of the material, defined as the behaviour observed before the stage of crack localization, it is shown that with MFRCs having the workability of a concrete for use in reinforced or prestressed concrete structures, the compressive and tensile strengths are in all cases less than those of a conventional concrete and their ductility is only slightly greater. On the other hand, on the scale of structure, in other words after crack localization, the fibres transmit forces across a macrocrack just like the reinforcements of a reinforced concrete. It is, therefore, on the scale of the structure, and not on that of the material, that the metal fibres used in this study add ductility.
Mechanical behaviour of metal-fibre reinforced concretes
Rossi, P. (author)
Cement and Concrete Composites ; 14 ; 3-16
1991-06-10
14 pages
Article (Journal)
Electronic Resource
English
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