Gamma radiation attenuation, mechanical properties and microstructure of barite-modified cement and geopolymer mortars
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F26%3A0191363" target="_blank" >RIV/00216305:26110/26:0191363 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S173857332400545X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S173857332400545X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.net.2024.10.057" target="_blank" >10.1016/j.net.2024.10.057</a>
Alternative languages
Result language
angličtina
Original language name
Gamma radiation attenuation, mechanical properties and microstructure of barite-modified cement and geopolymer mortars
Original language description
The present study contributes to the development of alternative materials for radiation shielding, focusing on environmental sustainability and material cost efficiency. The primary aim was to evaluate the compressive and flexural strength, mineral composition, microstructure, and gamma-ray attenuation properties of cement mortars and geopolymer mortars containing barite powder. Mortars based on ordinary Portland cement (OPC) and fly ash geopolymers with varying amounts of barite powder were assessed for their shielding properties at energy levels associated with the decay of 137Cs. From the results, key parameters such as the linear attenuation coefficient (mu), mass attenuation coefficient (mu m), half-value layer (HVL), and tenth-value layer (TVL) were determined. The results showed that while cement-based composites exhibited superior gamma radiation attenuation compared to fly ash geopolymer mortars, the latter had higher mass attenuation efficiency, meaning less material density was required for the same level of shielding. Additionally, cement mortars had 23-25 % higher mechanical strength than geopolymer mortars. Importantly, the inclusion of barite powder improved the radiation shielding performance of both materials by 7-10 %, demonstrating its effectiveness in enhancing the protective properties of these mortars. This research highlights the potential of fly ash geopolymer mortars as viable, eco-friendly alternatives to traditional cement mortars in radiation shielding applications.
Czech name
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Czech description
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Classification
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
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nuclear engineering and technology
ISSN
1738-5733
e-ISSN
2234-358X
Volume of the periodical
57
Issue of the periodical within the volume
4
Country of publishing house
KR - KOREA, REPUBLIC OF
Number of pages
11
Pages from-to
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UT code for WoS article
001486952700001
EID of the result in the Scopus database
2-s2.0-85208574068