Process to prepare a solid cement composition

A process to prepare a solid cement composition, comprising the steps of:

• (a) adding a meltable compound to an aqueous slurry of cement;
• (b) mixing the meltable compound in the form of solid particles and the aqueous slurry of cement of step (a) until a homogeneous dispersion of cement comprising dispersed meltable compound is obtained;
• (c) placing a dispersion of step (b) in a mould, wherein the dispersion is set by hydration;
• (d) melting part of the meltable compound by exposing the meltable compound to a temperature range of which the maximum is above the melting point of the meltable compound and a minimum below the melting point of the meltable compound;
• (e) exposing a material, either still as a dispersion or an already setting cement of step (c), to heat development or temperature gradient such that the temperature is at least above the congealing point of the meltable compound to obtain a solid cement composition.