A phenomenological model for hydration heat evolution of a cemented waste form

A phenomenological model for hydration heat evolution of a cemented waste form

Phung, Quoc Tri
Seetharam, Suresh .C. (Belgian Nuclear Research Centre, Belgium)
Ferreira, Eduardo (Belgian Nuclear Research Centre, Belgium)
Govaerts, Joan (Belgian Nuclear Research Centre, Belgium)
Hendrix, Katrien (Belgian Nuclear Research Centre, Belgium)
Valcke, Elie (Belgian Nuclear Research Centre, Belgium)

2021-04-29

This paper presents an extension of an existing phenomenological model for predicting the evolution of hydration heat of a cemented waste form. The cemented waste form is essentially a mixture of blended cement and homogeneous low- and intermediate-level liquid (simulant) radioactive waste (sludge). The motivation stems from the fact that the existing empirical or phenomenological models are not designed to handle the interaction of a blended cement system with the waste sludge. The main objective of the proposed model is to minimize the number of isothermal or semi-adiabatic experiments (and thus the cost) required to design a promising recipe for conditioning the waste form. The paper demonstrates the capability of the model to successfully predict the evolution of hydration heat for various cemented waste form recipes.

Radioactive
Hydration heat
Cement
Supplementary cementitious materials
Sludge

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