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

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.