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Immobilisation of decontamination sludge in low-carbon cement: a study of early-age physico-mechanical behaviour of two alkali-activated slag-based waste forms

delete2026-07-10
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M
M. Criado *
J
Javier Puentes
E
Elena Torres
L
Laura A. Ramallo
J
J. Juan Ruiz
A
Alicia Pachón
DOI:10.1016/j.net.2026.104562delete
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Abstract

Abstract

En 中文
Decommissioning activities generate large volumes of low- and intermediate-level radioactive waste (LILW) that require suitable disposal routes. Although immobilisation in Portland cement matrices is the standard conditioning method, certain wastes with an acidic nature, with high contents of chelating agents and/or surfactants, such as the effluents resulting from metal surface decontamination processes, present serious disadvantages for their direct conditioning in these matrices.
Keywords:
decontamination sludge
alkali-activated slag
sodium carbonate
mechanical strength
UPV
isothermal calorimetry
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Nuclear Engineering and Technology cover
Nuclear Engineering and Technology
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Universidad de Alcalá cover
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