| People | Locations | Statistics |
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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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article
Mock-up wall for non-destructive testing and evaluation of thick reinforced concrete structures in nuclear power plants
Abstract
The reinforced concrete structures in nuclear power plants (NPP) are deteriorated due to aging or environmental stressor effects during the lifetime of the power plant. To assess the construction quality and long-term performance of the reinforced concrete structures, different non-destructive testing (NDT) and evaluation (NDE) methods are used. Some of the challenges for assessing the performance of these structures are (i) The assessment could be performed only during the annual overhauls when testing is time-limited, (ii) the accuracy and reliability of the available NDT testing devices, (iii) uncertainty of the international uniformity of the methods used for NDT tests, and (iv) the creditability of results and analyses. To overcome those challenges, a mock-up wall that is representative of NPP containment concrete cross sections is constructed for the critical investigation of NDT&E methods and techniques. Simulated defects are applied to the mock-up wall. These defects are representing the most common types of defects in concrete structures such as: dimensional errors; finishing errors; honeycombing; cracking, delamination due to structure stresses or deterioration mechanisms; embedded foreign objects in the concrete; voids adjacent to liner and voids in grouted tendon ducts for the post-tensioned structures. The aim of this paper is to present to discuss the conceptual design of the mock-up, which includes (i) the concrete properties, (ii) reinforcement, (ii) tendon ducts, (iii) types of the simulated defects. The paper also introduces the NDT&E methods and techniques that are suitable for assessing the condition of the mock-up wall under the real environmental conditions. The mock-up wall for NPP thick-walled reinforced concrete structures will enable the assessment of NDT&E methods and experts experience, and provide an important and very much need education perspective for future NDE experts.