Gamma irradiaion of concrete prisms

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F18%3AN0000078" target="_blank" >RIV/26722445:_____/18:N0000078 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Gamma irradiaion of concrete prisms

Popis výsledku v původním jazyce

Concrete is a durable material which is a vital part of engineering barrier for radioactive waste disposal. In many concepts of low and intermediate level waste (e.g. the French concept) and in some cases even of high level waste, concrete is planned to be used for construction of containers carrying the primary packages of the immobilized waste. Therefore, it is needed to understand the effect of gamma irradiation on concrete with respect to its durability. A joint experimental program of Czech and French research organizations CVR and CEA respectively was started in order to study the changes in some mechanical properties of cementitious composites after their exposition to gamma irradiation. Samples of cement mortars, manufactured in CVR, were divided into two sets, each of them irradiated and characterized with both CVR and CEA facilities. Samples tested in CVR were exposed to cumulative doses of 0.3 to 3.0 ×106 Gy with dose rates from 0.5 to 6 kGy/h, while samples in CEA, Saclay were exposed to cumulative doses of 0.72 to 3.1×106 Gy with dose rates 0.6, 1.6 and 2.6 kGy/h, respectively. Some mechanical properties as P-waves with ultrasonic measurements and tensile strengths of irradiated mortars were then defined. A comparison with non-irradiated samples maintained in the same environment was done.

Název v anglickém jazyce

Gamma irradiaion of concrete prisms

Popis výsledku anglicky

Concrete is a durable material which is a vital part of engineering barrier for radioactive waste disposal. In many concepts of low and intermediate level waste (e.g. the French concept) and in some cases even of high level waste, concrete is planned to be used for construction of containers carrying the primary packages of the immobilized waste. Therefore, it is needed to understand the effect of gamma irradiation on concrete with respect to its durability. A joint experimental program of Czech and French research organizations CVR and CEA respectively was started in order to study the changes in some mechanical properties of cementitious composites after their exposition to gamma irradiation. Samples of cement mortars, manufactured in CVR, were divided into two sets, each of them irradiated and characterized with both CVR and CEA facilities. Samples tested in CVR were exposed to cumulative doses of 0.3 to 3.0 ×106 Gy with dose rates from 0.5 to 6 kGy/h, while samples in CEA, Saclay were exposed to cumulative doses of 0.72 to 3.1×106 Gy with dose rates 0.6, 1.6 and 2.6 kGy/h, respectively. Some mechanical properties as P-waves with ultrasonic measurements and tensile strengths of irradiated mortars were then defined. A comparison with non-irradiated samples maintained in the same environment was done.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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