University of Tabriz Journal of Civil and Environmental Engineering 2008-7918 54 114 2024 04 20 A Plaster Based on Gypsum and Investigation of Its Thermal Insulation Properties A Plaster Based on Gypsum and Investigation of Its Thermal Insulation Properties 46 55 16288 10.22034/ceej.2023.53351.2180 FA Ehsan Moazzen Department of Civil Engineering, Hakim Sabzevari University, Sabzevar 9617976487, Iran Rasoul Shadnia Department of Civil Engineering, Hakim Sabzevari University, Sabzevar 9617976487, Iran Journal Article 2022 09 07 Considering the increasing consumption and decreasing of energy on the planet, creating new methods to reduce energy consumption by humans is one of the necessary priorities for continuation and survival. In civil engineering, many researchers are trying to reduce energy consumption by conducting laboratory and theoretical research on building materials (Ajouguim et al., 2021; Singh et al., 2022) especially linings and plaster trodes (Touil et al., 2022). In the present paper, an attempt has been made to present a plaster based on a combination of new and old materials, which can be a step in the development of the thermal insulation industry, both in terms of quality and cost. The purpose of this research is to reach a plaster with characteristics similar to thatch, but with the elimination of defects such as cracking due to continuous cold and heat, erosion due to rain and moisture, and continuous drying. In the production of this plaster, which is based on gypsum, in the first step, some investigations and tests were carried out on different materials, including traditional thatch mixtures. In the end, the final product was obtained by adding materials such as gypsum, clay, wood powder, glass wool and some nano materials with the aim of producing a plaster with a thermal conductivity coefficient lower than the existing ones. This plaster will be used for plastering inside the building like gypsum plaster and has advantages such as not having a thermal bridge on the entire surface, not having seams and cracks, as well as not destroying and falling over time due to its high adhesion. This research has tried to increase the quality of thermal insulation in the construction industry and by taking the idea from the behavior of straw, to produce a much more optimal coating, both in terms of efficiency, availability and saving energy consumption, as well as in terms of costs. Considering the increasing consumption and decreasing of energy on the planet, creating new methods to reduce energy consumption by humans is one of the necessary priorities for continuation and survival. In civil engineering, many researchers are trying to reduce energy consumption by conducting laboratory and theoretical research on building materials (Ajouguim et al., 2021; Singh et al., 2022) especially linings and plaster trodes (Touil et al., 2022). In the present paper, an attempt has been made to present a plaster based on a combination of new and old materials, which can be a step in the development of the thermal insulation industry, both in terms of quality and cost. The purpose of this research is to reach a plaster with characteristics similar to thatch, but with the elimination of defects such as cracking due to continuous cold and heat, erosion due to rain and moisture, and continuous drying. In the production of this plaster, which is based on gypsum, in the first step, some investigations and tests were carried out on different materials, including traditional thatch mixtures. In the end, the final product was obtained by adding materials such as gypsum, clay, wood powder, glass wool and some nano materials with the aim of producing a plaster with a thermal conductivity coefficient lower than the existing ones. This plaster will be used for plastering inside the building like gypsum plaster and has advantages such as not having a thermal bridge on the entire surface, not having seams and cracks, as well as not destroying and falling over time due to its high adhesion. This research has tried to increase the quality of thermal insulation in the construction industry and by taking the idea from the behavior of straw, to produce a much more optimal coating, both in terms of efficiency, availability and saving energy consumption, as well as in terms of costs. https://ceej.tabrizu.ac.ir/article_16288_74eab82ff1f0f66d137f7a1436e2e6d1.pdf