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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Chateau, Camille
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2021Densities of hemp shiv for building, part I: multiscale characterization
- 2020Additive Manufacturing of Anisotropic Concrete: a Flow-Based Pultrusion of Continuous Fibers in a Cementitious Matrixcitations
- 2020Microstructure, deformation and microcracking of a 3D printed composite
- 2020X‐ray tomographic observations of microcracking patterns in fibre‐reinforced mortar during tension stiffening testscitations
- 20203D detection and quantitative characterization of cracks in a ceramic matrix composite tube using X-ray computed tomographycitations
- 2019Characterisation and modelling of interfacial damage in fibre-reinforced concrete for 3D printing in constructioncitations
- 2019Analysis of the damage initiation in a SiC/SiC composite tube from a direct comparison between large-scale numerical simulation and synchrotron X-ray micro-computed tomographycitations
- 2019Experimental and micromechanical investigation on the mechanical and durability properties of recycled aggregates concretecitations
- 2019Experimental and micromechanical investigation on the mechanical and durability properties of recycled aggregates concretecitations
- 2019Phase field method for microcracking simulations in concrete microstructure models obtained from 3D microtomography images
- 2018DVC-based image subtraction to detect microcracking in lightweight concretecitations
- 2017Modeling interactions between bulk and interfacial cracking in concrete microstructures with the phase field method
- 2017Large-scale simulations of quasi-brittle microcracking in realistic highly heterogeneous microstructures obtained from micro CT imagingcitations
- 2017Modeling of Complex Microcracking in Quasi-Brittle Materials: Numerical Methods and Experimental Validationscitations
- 2017Effects of braiding angle on damage mechanisms in SiC/SiC composite tubes characterized by X-ray computed tomography
- 2017Modelling of microcracking in image-based models of highly heterogeneous materials using the phase field method
- 2016A phase-field method for computational modeling of interfacial damage interacting with crack propagation in realistic microstructures
- 2016Massively parallel FFT-based simulation to analyze the behavior of architected SiC/SiC composite tubes from synchrotron X-ray tomography
- 2016On the choice of parameters in the phase field method for simulating crack initiation with experimental validationcitations
- 2016On the choice of parameters in the phase field method for simulating crack initiation with experimental validationcitations
- 20163D experimental detection and characterization of microcracking in porous cement based materials
- 2015Micromechanical modeling of the elastic behavior of unidirectional CVI SiC/SiC compositescitations
- 2015On the role of in-plane damage mechanisms on the macroscopic behavior of SiC/SiC composites from complementary 2D and 3D in-situ investigations
- 2015A phase-field method for microcracking simulation in concrete microstructure models obtained from microtomography images
- 2015A phase-field method for computational modeling of interfacial damage interacting with crack propagation in realistic microstructures obtained by microtomographycitations
- 2015Phase field modeling of complex microcracking in voxel-based models of cementitious materials
- 2015A phase field method to simulate crack nucleation and propagation in strongly heterogeneous materials from direct imaging of their microstructurecitations
- 2014Modeling of damage in unidirectional ceramic matrix composites and multi-scale experimental validation on third generation SiC/SiC minicompositescitations
- 2011In-situ X-ray microtomography characterization of damage in SiC/SiC minicompositescitations
- 2010X-ray tomographic characterization of the macroscopic porosity of chemical vapor infiltration SIC/SIC composites: effects on the elastic behaviorcitations
- 2010Multiscale approach of mechanical behaviour of SiC/SiC composites : elastic behaviour at the scale of the tow
- 2010Experimental characterisation of damage in SiC/SiC minicompositescitations
- 2009Multiscale approach of mechanical behaviour of SiC/SiC composites : elastic behaviour at the scale of the tow
- 2009X-ray tomographic characterization of the macroscopic porosity of CVI SiC/SiC composites - Effects on the elastic behaviorcitations
Places of action
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article
X‐ray tomographic observations of microcracking patterns in fibre‐reinforced mortar during tension stiffening tests
Abstract
International audience ; For the last decades, new reparation or fabrication processes have been studied to replace traditional rebar by roving of different mineral or organic fibres to avoid corrosion issues. Such materials refer to the family of cementitious composite. Their tensile strength would directly depend on the proportion of reinforcement but also strongly on the interfacial mechanical properties between fibres and cementitious matrix. From now, evaluation of interfacial properties was mostly limited to the use of force-displacement curves obtained from mechanical experiments. This work presents a new methodology using micromechanical tension stiffening tests combined with X-ray computed tomography (XRCT) observations, performed at the Anatomix beamline at Synchrotron Soleil, and specific image processing procedures. Multi XRCT acquisitions with suitable scanning strategy are used to image the whole fibre-matrix interface along centimetric samples at four to five different levels of loading magnitude. Intensive image processing is then performed on tomographic images including digital volume correlation (DVC), image subtraction and Hessian-based filtering. This experiment allows to study damage mechanisms at small scale. The proposed methodology shows great potential to provide both qualitative and quantitative elements on interfacial mechanical behaviour such as crack growth and crack orientation. The interface between mortar and sufficiently small multi-fibre yarn used in this paper is shown to behave in certain condition as traditional rebar interface producing conical cracks in the surrounding matrix rather than debonding in mode 2, permitting a much higher energy dissipation during debonding. According to this study, conical cracks repartition and geometry are mostly influenced by the cementitious matrix. The spacing between cracks goes from 50 to 100 μm and the angle between crack normal vector and yarn orientation goes from 35 to 50 degrees.