Thaumasite formation in cementitious composites used in underground repositories - Conditions and impact on composite's properties: A review

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00379988" target="_blank" >RIV/68407700:21110/24:00379988 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.pnucene.2024.105356" target="_blank" >https://doi.org/10.1016/j.pnucene.2024.105356</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.pnucene.2024.105356" target="_blank" >10.1016/j.pnucene.2024.105356</a>

Result language
angličtina
Original language name
Thaumasite formation in cementitious composites used in underground repositories - Conditions and impact on composite's properties: A review
Original language description
Cement-based materials (CBM) are used for several applications in radioactive waste underground repositories as engineered barriers. Thaumasite sulfate attack (TSA) is a type of cement-based materials' corrosion, which has been investigated in regard to civil engineering structures, but very little research has been made on TSA in the environment of rad-waste repositories. The paper introduces types of rad-waste repositories and thaumasite characterization; summarizes mechanisms of TSA corrosion and its impact on CBM properties and durability; and defines the specifics of underground repositories in relation to TSA. High relative humidity is typical for underground disposal sites, cold temperatures (below 15 degrees C) are characteristic for near-surface repositories, while in deep geological repositories the temperatures may reach 80-100 degrees C which allows the decomposition and recrystallization of ettringite and eventually thaumasite. Sites located in clay rock, salt rock, limestone, dolomite etc., but also some waste forms itself may be rich in sulfates and carbonates. All these are conditions favoring TSA on CBM and thus research in this area should not be underestimated.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/TK01030058" target="_blank" >TK01030058: Non-solid radioactive waste permanent disposal technology</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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