The effect of gamma irradiation on cementitious materials with superplasticizers – The Czech contribution
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00365613" target="_blank" >RIV/68407700:21110/24:00365613 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/24:00365613
Result on the web
<a href="https://publikationen.bibliothek.kit.edu/1000173343" target="_blank" >https://publikationen.bibliothek.kit.edu/1000173343</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
The effect of gamma irradiation on cementitious materials with superplasticizers – The Czech contribution
Original language description
Within Task 3 of EURAD WP3 CORI, the `Czech team’ studies the influence of the degradation of organic concrete additives (plasticizers) and organic radioactive waste (e.g. ion exchange resins (IER), sorbents) fixed in the cement matrix on the migration of radionuclides in the cement/concrete environment. Samples are subjected to gradual degradation (radiolysis, hydrolysis, temperature). The main physical properties of the cementitious materials, such as strength, elasticity and, more rarely, hydraulic conductivity, are regularly tested/ monitored to control the evolution of the macroscopic behaviour of the samples. FNSPE CTU and ÚJV Řež have started a study of organic substances behaviour (formate, acetate, EDTA, adipate, and phthalate) in presence of cementitious materials (hydrated cement paste CEM I, witness sample of concrete from L/ILW repository containing CEM III and CSH, both irradiated and fresh) in portlandite water or NaOH solution. FCE CTU is responsible for macroscopic testing. This contribution describes materials, sample preparation / manufacture, and tests performed before and after irradiation of cementitious samples (CEM I paste and “Richard”); status as of autumn 2021. The results of the EURAD WP3 CORI project are applicable not only in the case of the L/ILW Richard repository safety assessment and its possible lifetime extension, but the data obtained will also be used for safety assessment and calculations related to other radioactive waste repositories in the Czech Republic, including the decommissioning waste section in the planned deep repository (concrete containers, structural parts, and fillings).
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings Document – CORI 3rd Annual Workpackage Meeting
ISBN
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ISSN
2701-262X
e-ISSN
2701-262X
Number of pages
17
Pages from-to
178-194
Publisher name
Karlsruher Institut für Technologie
Place of publication
Karlsruhe
Event location
Karlsruhe
Event date
Nov 25, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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