Nanomechanical properties of neutron-irradiated concrete

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00381431" target="_blank" >RIV/68407700:21110/24:00381431 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.14311/APP.2024.50.0030" target="_blank" >https://doi.org/10.14311/APP.2024.50.0030</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 irradiation from nuclear reactor undergoes atomic-level degradation due to the influence of neutrons, secondary gamma rays, and associated gamma heating. The radiationinduced damage decreases the mechanical properties of the concrete and affects its performance as a construction material. The concrete samples analysed 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 Rež to the target neutron fluence of 1.6–1.8 . 1019 n cm-2 (E>0.1MeV) and received the gamma dose of 500MGy. The temperatures during irradiation were kept within a range of 50–60 °C. The mechanical properties of the individual phases in the cementitious matrix after neutron irradiation were assessed by the nanoindentation. To track the evolution of the nanomechanical properties of individual components under radiation, a comparison was made between the mechanical properties of neutron-irradiated material and pristine concrete.

Název v anglickém jazyce

Nanomechanical properties of neutron-irradiated concrete

Popis výsledku anglicky

Concrete exposed to irradiation from nuclear reactor undergoes atomic-level degradation due to the influence of neutrons, secondary gamma rays, and associated gamma heating. The radiationinduced damage decreases the mechanical properties of the concrete and affects its performance as a construction material. The concrete samples analysed 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 Rež to the target neutron fluence of 1.6–1.8 . 1019 n cm-2 (E>0.1MeV) and received the gamma dose of 500MGy. The temperatures during irradiation were kept within a range of 50–60 °C. The mechanical properties of the individual phases in the cementitious matrix after neutron irradiation were assessed by the nanoindentation. To track the evolution of the nanomechanical properties of individual components under radiation, a comparison was made between the mechanical properties of neutron-irradiated material and pristine concrete.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil 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

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Local Mechanical Properties 2024

ISBN

978-80-01-07386-5

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

30-35

Název nakladatele

ACTA Polytechnica CTU

Místo vydání

Prague

Místo konání akce

Praha

Datum konání akce

29. 5. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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