Journal ArticleDOI
Fibre reinforced concrete: new design perspectives
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TLDR
In this article, the main concepts behind the structural rules for Fibre Reinforced Concrete structural design are briefly explained, and a New fib Model Code that aims to update the previous CEB-FIP Model Code 90, published in 1993, is presented.Abstract:
Although the use of Fibre Reinforced Concrete (FRC) for structural applications is continuously increasing, it is still limited with respect to its potentials, mainly due to the lack of International Building Codes for FRC structural elements. Within fib (Federation Internationale du Beton), the Special Activity Group 5 is preparing a New fib Model Code that aims to update the previous CEB-FIP Model Code 90, published in 1993, that can be considered as the reference document for Eurocode 2. The New Model Code includes several innovations and addresses among other topics, new materials for structural design. In this respect, FRC will be introduced. The Technical Groups fib TG 8.3 “Fibre reinforced concrete” and fib TG 8.6 “Ultra high performance FRC” are preparing some sections of the New Model Code, including regular and high performance FRC. This paper aims to briefly explain the main concepts behind the structural rules for FRC structural design.read more
Citations
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Journal ArticleDOI
Steel fibers from waste tires as reinforcement in concrete: A mechanical characterization
TL;DR: In this paper, the post-cracking performance of RSFRC (Recycled Fiber Reinforced Concrete) was evaluated by means tests on flexural elements and slabs.
Journal ArticleDOI
On the mechanical properties and fracture behavior of polyolefin fiber-reinforced self-compacting concrete
TL;DR: In this article, the fracture properties of a self-compacting concrete with low, medium and high-fiber contents of macro polyolefin fibers are compared with a plain self compacting concrete and also with a steel fiber-reinforced self compounding concrete.
Journal ArticleDOI
Experiences in Barcelona with the use of fibres in segmental linings
TL;DR: In this article, the authors present three real experiences that are representative of the application of FRC in urban tunnels and a design methodology to take into account the structural contribution of the fibres.
Journal ArticleDOI
An experimental study on the post-cracking behaviour of Hybrid Industrial/Recycled Steel Fibre-Reinforced Concrete
TL;DR: In this article, the mechanical behavior of FRC made with both industrial and recycled steel fibres recovered from waste tyres was investigated, and the results highlighted a fairly negligible influence of fibres in terms of compressive strength, whereas a significant decay in the post-cracking behaviour was observed in specimens with higher fractions of recycled fibres.
Journal ArticleDOI
Mechanical properties of concrete reinforced with recycled HDPE plastic fibres
TL;DR: In this article, the authors investigated potential engineering benefits of the pioneering application of simply extruded recycled high-density polyethylene (HDPE) plastic fibres in structural concrete and found that the Fibres mainly contributed by providing the post-cracking flexural ductility and through improving serviceability properties of concrete such as the reduced plastic shrinkage cracking, drying shrinkage and water permeability.
References
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Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements
TL;DR: In this article, fracture mechanics is introduced into finite element analysis by means of a model where stresses are assumed to act across a crack as long as it is narrowly opened, which may be regarded as a way of expressing the energy adsorption in the energy balance approach.
Journal ArticleDOI
Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements
TL;DR: In this article, fracture mechanics is introduced into finite element analysis by means of a model where stresses are assumed to act across a crack as long as it is narrowly opened, which may be regarded as a way of expressing the energy adsorption in the energy balance approach.
Journal ArticleDOI
Crack band theory for fracture of concrete
Zdeněk P. Bažant,Byung H. Oh +1 more
TL;DR: In this article, a fracture theory for a heterogenous aggregate material which exhibits a gradual strain-softening due to microcracking and contains aggregate pieces that are not necessarily small compared to structural dimensions is developed.
Journal ArticleDOI
Nonlocal Continuum Damage, Localization Instability and Convergence
TL;DR: In this paper, a nonlocal damage formulation was extended to a more general form in which the strain remains local while any variable that controls strain-softening is nonlocal, and it was shown that the energy dissipation and damage cannot localize into regions of vanishing volume.
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