Study of the impact of microstructure on the thermal properties of porous materials used in civil engineering

¹ Laboratory of Solid State Physics, Department of Physics, Faculty of Science Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez 30000, Morocco
² National School of Applied Sciences, Abdelmalek Essaadi University, Al Hoceima, Morocco
³ Department of Physics, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
⁴ ENSG, UMR 7359-GeoRessources, University of Lorraine, Nancy 54505, France

^* Corresponding author: amina.lagssai@usmba.ac.ma

Abstract

This work focuses on studying the impact of porosity and fluid saturation on the thermal conductivity of calcarenite rocks. The porosity of these porous materials is measured using the water porosity technique, and thermal conductivity is measured using thermal conductivity scanning (TCS). Models for predicting the thermal properties of rocks have been established. The results obtained show that thermal conductivity values increase considerably in the saturated state compared to the dry state. Comparison of the experimental results and theoretical predictions shows that the thermal conductivity values lie between the two theoretical limits, with values closer to the parallel model, indicating that water saturation promotes heat transfer through the solid matrix.