Different instrumental analyses were used to investigate the solid phases constituted by the hydrated cement mixes, these are; X-ray diffraction (XRD), thermal analysis including thermogravimetry (TG) and differential thermal analysis (DTA), Infrared transmittance (IR) as well as  scanning electron microscope (SEM) attached with energy dispersive X-ray unit (EDX). Characterization of the prepared cements were carried out through determination of the physicomechanical properties involving heat of hydration and sintering parameters (bulk density and apparent porosity) and cementing properties involving water of consistency (WOC), initial and final setting times (ST), as well as mechanical strength (cold crushing strength) as a function of the age of hydration.

It is concluded that the optimum molecular proportion for preparing sorel cement is 3 : 1 MgO and  respectively. It consumes a moderate amount of mixing water and characterized with short setting time, high heat of hydration, good sintering parameters as well as high cold crushing strength values at different ages of hydration compared with 

the other cement mixes. The improved properties are due to the fact that this mix composition was suitable to form stable sorel cement, F3 form  which is responsible for hydration and hardening discussed.