Study of the Thermal Characteristics of a Geomaterial: Case of Savè Granites in the Republic of Benin

Abstract

: This work focuses on the valorization of local materials. The rock that is granite, a material used in construction thanks to its mechanical resistance, is the subject of our study. The granite of the commune of Savè, made it possible to appreciate the thermal behavior of this rock studied with a view to its use as a building material. To this end, a thermal diffusivity measurement test was carried out on this material. Thus, we made samples which were then connected to a data acquisition box via thermocouples. A Python script is used to ensure the collection of temperature values over time. From this thermal diffusivity test carried out on the granite taken from the Savè breasts, we obtained an average diffusivity 𝛼 = 5.84×10 -6 m 2 /s. As a result, the thermal effusivity and the heat capacity of the material were determined having respectively the value 1,351.09 J/(K·m 2 ·s 1/2 ) and 547,945.21 J/(m 3 ·K). These different results highlight a thermal characterization of Savè granites as a relevant material in the design and construction of an energy-efficient eco-housing.