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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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Ferreira, Rui Miguel
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023Modelling of aged reinforced concrete structures for design extension conditions (CONFIT)
- 2023A closer look at the corrosion of steel liner embedded in concretecitations
- 2019Design, construction, and NDT of a mock-up for reinforced concrete walls in NPP
- 2018Betonisiltojen lujuustutkimukset 2017-2018
- 2018Mock-up wall for non-destructive testing and evaluation of thick reinforced concrete structures in nuclear power plants
- 2016Detection capability of NDT methods in steel-concrete-steel composite elements
- 2016Modeling chloride ingress under freeze-thaw loading – 3D fem approach
- 2016NDE Research of Nuclear Power Plant Primary Circuit Components and Concrete Infrastructure in Finland
- 2016Selection Matrix for Non-Destructive Testing of NPP Concrete Structures
- 2013Condition assessments and corrosion measurements of cooling water chambers in a nuclear power plant
- 2012Concrete durability based on coupled deterioration by frost, carbonation and chloride
- 2012Influence of metakaoline on the chloride penetration performance of concrete
- 2012Simulation technique for service life assessment of façade refurbishment
- 2012Service life design of concrete subject to frost attack and carbonation/chloride penetration
- 2012Effect of concrete frost deterioration on chloride penetration and carbonation
- 2009New trends in concrete-polymer composite materials and systems
- 2008New trends in concrete-polymers composite materials and systems
- 2006Estimating long-term durability parameters based on electrical resistivity measurements
- 2006Concrete workability and water resistance improvement using polymeric admixtures
- 2006Quality control based on electrical resistivity measurements
- 2004Probabilistic assessment of the durability performance of concrete structures
Places of action
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booksection
Modelling of aged reinforced concrete structures for design extension conditions (CONFIT)
Abstract
The CONFIT project uses a multi-disciplinary approach to investigate the various physical and chemical degradation mechanisms and how they affect the mechanical load bearing capacity of concrete in long term operation. Reinforced concrete structures are, indeed, of safety relevance in nuclear power plants due to the containment function of the reactor building and load bearing functions of the control building and shielding functions of specific concrete structures.<br/><br/>During the project, it was investigated how various external chemical and physical stressors affect the mechanical concrete properties as a material (Ferreira, M. and Fülöp, L., 2020) and in particular how corrosion of the reinforcement affects the load bearing capacity of a concrete structure (Calonius, et al., 2023b) and how this can be numerically simulated (Calonius, et al. 2021). For the simulation of full-scale loading scenarios on reinforced concrete structures involving physically, chemically or mechanically deteriorated concrete, specific material models for concrete were developed during the project. One of the advantages of such advanced concrete models is the ability to respond to anisotropic behaviour, which is inherent in damaged concrete (Vilppo, et al., 2021).<br/><br/>Since the calibration of the model parameters requires measurements of anisotropy in concrete under controlled multiaxial loading, a specific method using ultrasonic wave velocity measurement was developed (Calonius et al., 2022c). This method enables the computation of the damaged stiffness matrix components from the ultrasonic pressure and shear wave velocity measurements on the concrete sample in different directions.<br/><br/>As a result, the project has generated important findings in the domain of nuclear safety, some of which present novelty value of academic importance.