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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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Al-Neshawy, Fahim
Aalto University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2023The Effect of Heat Curing on the Early-Strength Development of Low-Carbon Concrete
- 2023Comprehensive state-of-the-art report for long-term behaviour of concrete structures in repository environment
- 2023Comprehensive state-of-the-art report for long-term behaviour of concrete structures in repository environment
- 2023Combined NDT methods to determine the variations in compressive strength throughout concrete structures
- 2023Reduction of CO2 Emission by Using Low Carbon Concretes with Accelerating Admixtures
- 2023Assessment procedure of determining compressive strength of hardened reinforced concrete structures
- 2023Determining the Location of Steel Reinforcement in Thick Concrete Walls by Non-Destructive Inspection
- 2021Factors for compactibility and risk of segregation for concrete
- 2021Investigation on the effect of entrained air on pore structure in hardened concrete using MIPcitations
- 2021Factors for compactibility and risk of segregation for concrete - Report for contract research project "Compact Air" ; Betonin tiivistettävyyteen ja erottumisherkkyyteen vaikuttavat tekijät – Raportti tilaustutkimusprojektista "Compact Air"
- 2019Design, construction, and NDT of a mock-up for reinforced concrete walls in NPP
- 2019Betonin koostumuksen vaikutus sen tiivistettävyyteen
- 2018Mock-up wall for NDT&E of NPP thick-walled reinforced concrete structures
- 2018Mock-up wall for non-destructive testing and evaluation of thick reinforced concrete structures in nuclear power plants
- 2017“NDT MATRIX” - A Tool for Selecting Non-Destructive Testing Methods for NPP Concrete Structures
- 2016Chemical changes of cement pastes due to the effect of combined carbonation and chloride penetration
- 2016Selection Matrix for Non-Destructive Testing of NPP Concrete Structures
- 2013Condition assessments and corrosion measurements of cooling water chambers in a nuclear power plant
- 2013Condition assessments and corrosion measurements of cooling water chambers in a nuclear power plant
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document
Design, construction, and NDT of a mock-up for reinforced concrete walls in NPP
Abstract
Construction methods, environmental stressors, and aging factors are the main causes for defects of reinforced concrete in nuclear power plants (NPP). These defects are typically occurred as corrosion of reinforcement steel, delamination, cracks, malfunction of post-tensioning or steel composite systems etc. Some of the challenges for assessing the performance of these structures by nondestructive testing methods (NDT) are that the assessment could be performed only during the annual overhauls when testing is time-limited and uncertainty of the accuracy and reliability of the available NDT testing devices combined with the lack of the international uniformity of the methods used for NDT tests.<br/>To overcome these challenges, a mock-up wall representing a section of the concrete containment of the NPP. The mock-up wall included simulated defects, which mimic the most common types of defects in NPP concrete structures such as dimensional errors, honeycombing, delamination, defects adjacent to the steel liner and voids in grouted tendon ducts for the posttensioned<br/>structures. This paper introduce the design and construction of the wall including the concrete properties, reinforcement, tendon ducts and the types of the simulated defects. The paper also introduces the NDT methods and techniques that are suitable for assessing the condition of the mock-up wall under the real environmental conditions. These techniques include mechanical<br/>methods as rebound hammer, ultrasonic and electromagnetic methods. This mock-up wall will enable to investigate reliably available NDT methods and experts’ skills providing also an important and very much need educational platform for future NDE experts.