Characterization of the microstructure of cement paste exposed to gamma radiation by scanning electron microscopy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F25%3AN0000057" target="_blank" >RIV/26722445:_____/25:N0000057 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21110/25:00386837
Result on the web
<a href="https://ojs.cvut.cz/ojs/index.php/APP/article/view/11100" target="_blank" >https://ojs.cvut.cz/ojs/index.php/APP/article/view/11100</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/APP.2025.54.0072" target="_blank" >10.14311/APP.2025.54.0072</a>

Result language
angličtina
Original language name
Characterization of the microstructure of cement paste exposed to gamma radiation by scanning electron microscopy
Original language description
Hardened cement paste with a water-cement ratio of 0.4 was examined under five different relative humidity (RH) conditions (11 %, 33 %, 76 %, 96 %, and 100 %). These samples were exposed to gamma radiation with a total dose of 13.82 MGy over 341 days. Scanning electron microscopy (SEM) was the primary tool used for characterizing the samples’ microstructure at a microscale, aided by image analysis (IA), which showed negligible changes in Calcium-Silicate-Hydrate phases but a decrease in Portlandite of 1.5–3.5 % under 33–100 % RH conditions. Point elemental analysis was conducted to determine the (Ca-S)/Si ratio of the inner product, finding a significant increase of up to 20 % at medium RH conditions (33–76 %).
Czech name
—
Czech description
—

Project
<a href="/en/project/GA23-05435S" target="_blank" >GA23-05435S: Nanomechanical performance of cementitious composites under radiation impact and variable environmental actions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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