Thermophysical characterization of a new clay-based construction material from the Atlas region

Abstract

As part of the valorization of local materials and the search for energy efficiency in the building sector, a thermophysical study was carried out on a new clay-based composite material from the Atlas region reinforced by peanut shells, which constitute an abundant ecological and untapped waste. In this study, a series of samples (100×100×26 mm3) of this composite are elaborated at different mass fractions of peanut shells. The thermal parameters are estimated by metrological methods such as the steady-state hot plane method and the flash method. The results showed, in addition to the lightness offered by peanut shells to these composites, that the thermal conductivity and thermal diffusivity vary respectively from values 0.623 W.m−1.K−1 and 4.8 m2.s−1 for raw clay to the values 0.323 W.m−1.K−1 and 3.5 m2.s−1 for the mass fraction of peanut shells to ϖ = 9%, which give this material the quality of the insulating walls.

Numerical Analysis of the Thermal Properties of Ecological Materials Based on Plaster and Clay

“…15a) [20] and peanut shells to 16.4% in clay (Fig. 15b) [5]. The characterization of the thermal conductivity of the samples were carried out by the method of the asymmetric hot plate in steady state, its description is given in Fig.…”

“…In this context, the improvement of thermal comfort is ensured especially for the inhabitants of dry climate regions by increasing the quality of thermal insulation of building materials historically used in these regions. Research [1][2][3][4][5][6][7][8][9] has been carried out to improve the thermal behavior of clay or plaster by combining them with additives of animal or vegetable origin. These additives are generally dispersed and randomly oriented in the matrix.…”