Thermal properties of plaster and plaster mortar filled with date palm rachis

Abstract

Climate data show that the elements of climatic comfort in desert buildings are not available most of the year, as desert areas are characterized by hot and long summers and cold winters, so it is necessary to use techniques and methods that reduce temperatures inside buildings. To achieve this, and in order to contribute to the valorization of local resources, we studied the effect of adding date palm rachis on the thermal properties of plaster and plaster mortar. Where we added date palm rachis in the form of gravel and in the form of layers for plaster and plaster mortar by 1% to 5%. The results of the experiments showed a noticeable improvement in the thermal conductivity and specific heat of the samples. As the thermal conductivity of plaster samples reinforced with date palm rachis in the form of layers decreased by 34% and by 20% when adding granulated date palm rachis, and the specific heat decreased by 27% for multilayered date palm rachis reinforced plaster samples and 20 % for granulated date palm rachis reinforced plaster samples.