Nanomechanical properties of neutron-irradiated concrete 

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F25%3AN0000075" target="_blank" >RIV/26722445:_____/25:N0000075 - isvavai.cz</a>

Výsledek na webu

<a href="https://ojs.cvut.cz/ojs/index.php/APP/article/view/10349" target="_blank" >https://ojs.cvut.cz/ojs/index.php/APP/article/view/10349</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2024.50.0030" target="_blank" >10.14311/APP.2024.50.0030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nanomechanical properties of neutron-irradiated concrete 

Popis výsledku v původním jazyce

Concrete exposed to reactor irradiation undergoes atomic-level degradation due to the influence of neutrons, secondary gamma rays, and associated gamma heating [1]. The radiation-induced damage decreases the mechanical properties of the concrete and affects its performance as a construction material [2-4]. The concrete samples analyzed in this work were prepared from blended Portland cement CEM II 32.5R mixed with siliceous aggregates with a size of 0 – 2.5 mm. The material underwent irradiation in the LVR-15 research reactor in Research Centre Řež to the target neutron fluence of 1.6- 1.81019n/cm2 (E>0,1 MeV) and received the gamma dose of  500 MGy. The temperatures during irradiation were kept within a range of 50 – 60 °C. The mechanical properties of the individual phases in the cementitious matrix and in the aggregate after neutron irradiation were assessed by the nanoindentation. In order to track the evolution of the nanomechanical properties of the individual components under radiation, a comparison of mechanical properties between the material after neutron irradiation, gamma irradiated concrete (13 MGy), and pristine concrete was made.

Název v anglickém jazyce

Nanomechanical properties of neutron-irradiated concrete 

Popis výsledku anglicky

Concrete exposed to reactor irradiation undergoes atomic-level degradation due to the influence of neutrons, secondary gamma rays, and associated gamma heating [1]. The radiation-induced damage decreases the mechanical properties of the concrete and affects its performance as a construction material [2-4]. The concrete samples analyzed in this work were prepared from blended Portland cement CEM II 32.5R mixed with siliceous aggregates with a size of 0 – 2.5 mm. The material underwent irradiation in the LVR-15 research reactor in Research Centre Řež to the target neutron fluence of 1.6- 1.81019n/cm2 (E>0,1 MeV) and received the gamma dose of  500 MGy. The temperatures during irradiation were kept within a range of 50 – 60 °C. The mechanical properties of the individual phases in the cementitious matrix and in the aggregate after neutron irradiation were assessed by the nanoindentation. In order to track the evolution of the nanomechanical properties of the individual components under radiation, a comparison of mechanical properties between the material after neutron irradiation, gamma irradiated concrete (13 MGy), and pristine concrete was made.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA23-05435S" target="_blank" >GA23-05435S: Účinky radiačního působení na nanomechanické vlastnosti cementových kompozitů v proměnných podmínkách prostředí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Acta Polytechnica CTU Proceedings, vol. 50

ISBN

978-800107094-9

ISSN

2336-5382

e-ISSN

—

Počet stran výsledku

6

Strana od-do

30-35

Název nakladatele

Czech Technical University in Prague

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

29. 5. 2024

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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