Finite Element Modeling for Thermal Conductivity of Cement-based Encapsulation Materials

With the trend of miniaturization and the increasing power density, the operating temperature of electronic devices keeps climbing, especially for wide band-gap semiconductors such as silicon carbide and gallium nitride. The high operating temperature up to 250℃ brings challenges to encapsulation materials since traditional encapsulation...

Effect of sulfates on hydration and properties of belite-rich cement paste

It is common practice to use gypsum in cement production to control setting time. Traditionally it is believed that sulfate from gypsum combines with aluminates to form ettringite and monosulfate to prevent flash set. However, previous studies have confirmed that sulfates also affect the hydration and mechanical properties of pure alite paste....

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

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...