A new plaster based on gypsum and investigation of its thermal insulation properties

Authors

Department of Civil Engineering, Faculty of Engineering, Hakim Sabzevari University, Sabzevar, Iran

Abstract

In this research, an attempt has been made to present a new 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 new plaster with a thermal conductivity coefficient lower than the existing ones. This new 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. It should be mentioned that the results obtained by the conductivity device show that the coefficient of thermal conductivity of plaster made with a thickness of 50 mm is equal to 0.21 W/m.k.

Keywords

Journal of Civil and Environmental Engineering

Articles in Press, Accepted Manuscript
Available Online from 10 May 2023

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