JP Journal of Heat and Mass Transfer
Volume 21, Issue 2, Pages 237 - 250
(December 2020) http://dx.doi.org/10.17654/HM021020237 |
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THERMAL CONDUCTIVITY AND POROSITY CHARACTERIZATION OF CALCARENITES STONES USED IN HISTORICAL BUILDINGS
Abderrahim Samaouali, Hanane Sghiouri El Idrissi, Younes El Rhaffari, Mohamed Hraita, Abdelkrim Moufakkir, Sara Belarouf, Houda Soulami and Mohamed Charia
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Abstract: The main objective of this work is to predict the porosity of calcarenite stone using a thermal conductivity scanner (TCS). We chose to work on a cubic sample of calcarenite taken from the Chellah monument site. This material is widely used in the construction of historical monuments in Morocco, especially in the Rabat-Salé region. Thermal conductivity measurements were carried out on three faces of the sample in the dry and water-saturated state. The exploitation of the obtained data allows to establish thermal conductivity maps for the three faces of the sample in the dry state, and also to deduce the porosity for each face. The results show that the thermal conductivity is a variable depending on the presence of voids (weathering) and cements, both of which depend on the heterogeneity of the material. Comparison of the results with those found by the mercury porosimetry method showed the consistency of the obtained porosity values. |
Keywords and phrases: thermal conductivity, porosity, thermal conductivity scanner, calcarenites, mercury porosimetry, historical building.
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