**7. Conclusion**

The objective of this work is to study the thermal properties of Sorel cement, which is a building material with promising performance. In order to determine the thermal properties of the cement, the photothermal deflection technique is used. The insulation properties of the SC were enhanced with the incorporation of PVAc. The thermal conductivities and thermal diffusivity of SC with PVAc are in a range of 0.45–0.9 W/m K and 0.4 10<sup>7</sup> –0.18 10<sup>7</sup> m<sup>2</sup> /s, respectively. A thermal optimum is obtained for 10% of PVAc so that a reduction of 50% of the thermal conductivity and 55% of the thermal diffusivity is obtained. Furthermore, the compressive strength of SC is notably influenced by the incorporation of PVAc and increases with decreasing PVAc percentages, the value of compressive strength vary from 64.88 to 23.07 MPa and achieves a reduction of up to 64% for 20% of PVAc. However, the thermal optimum reaches 55% reduction in compressive strength (29.05 MPa) but retains good mechanical strength.
