Characterization of Magnesium Potassium Phosphate Cement with Iron Oxides Additives for Immobilization of Radioactive Waste

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F25%3AN0000010" target="_blank" >RIV/46356088:_____/25:N0000010 - isvavai.cz</a>

Výsledek na webu

<a href="https://vant.kipt.kharkov.ua/ARTICLE/VANT_2025_2/article_2025_2_61.pdf" target="_blank" >https://vant.kipt.kharkov.ua/ARTICLE/VANT_2025_2/article_2025_2_61.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.46813/2025-156-061" target="_blank" >10.46813/2025-156-061</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of Magnesium Potassium Phosphate Cement with Iron Oxides Additives for Immobilization of Radioactive Waste

Popis výsledku v původním jazyce

The effects of adding fine Fe2O3 (<5.0 µm) and larger Fe3O4 (~44 µm) powders on the hydration, phase composition, microstructure and compressive strength of magnesium potassium phosphate cement (MKPC) was investigated. It was shown that the addition of Fe2O3 and its mixture with Fe3O4 prolongs the setting time of MKPC paste. The compressive strength of MKPC specimens increased with the increase of Fe2O3 content at all curing times. In MKPC with the addition of Fe2O3 and Fe3O4 mixture, the strength was higher than in the case of the addition of Fe2O3 only. XRD analysis revealed that K-struvite MgKPO4·6H2O was the main phase in the obtained MKPC for all specimens. It was found that the optimized MKPC formulation contained 5 wt.% Fe2O3 together with 15 wt.% Fe3O4 contributed to the dense microstructure and maximum strength, which are important characteristics to provide long-term waste forms stability.

Název v anglickém jazyce

Characterization of Magnesium Potassium Phosphate Cement with Iron Oxides Additives for Immobilization of Radioactive Waste

Popis výsledku anglicky

The effects of adding fine Fe2O3 (<5.0 µm) and larger Fe3O4 (~44 µm) powders on the hydration, phase composition, microstructure and compressive strength of magnesium potassium phosphate cement (MKPC) was investigated. It was shown that the addition of Fe2O3 and its mixture with Fe3O4 prolongs the setting time of MKPC paste. The compressive strength of MKPC specimens increased with the increase of Fe2O3 content at all curing times. In MKPC with the addition of Fe2O3 and Fe3O4 mixture, the strength was higher than in the case of the addition of Fe2O3 only. XRD analysis revealed that K-struvite MgKPO4·6H2O was the main phase in the obtained MKPC for all specimens. It was found that the optimized MKPC formulation contained 5 wt.% Fe2O3 together with 15 wt.% Fe3O4 contributed to the dense microstructure and maximum strength, which are important characteristics to provide long-term waste forms stability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Problems of Atomic Science and Technology

ISSN

1682-9344

e-ISSN

—

Svazek periodika

156

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

UA - Ukrajina

Počet stran výsledku

9

Strana od-do

61-70

Kód UT WoS článku

001492204400009

EID výsledku v databázi Scopus

2-s2.0-105003779090