Thermal-Humidity Parameters of 3D Printed Wall

The purpose of the external walls is to secure the internal microclimate of the building. External walls not only must have proper strength and durability but also prevent heat escape, overheating during summer, protect from noise and increase of humidity. The main parameter that describes the thermal properties of external walls is the heat transmission coefficient U [W/(m2⋅K)] determined in accordance with EN ISO 6946:2008. One of most recent technology of constructing walls is the additive manufacturing. The aim of the study is to determine the thermal properties of wall printed with use of High Performance Concrete and insulated with mineral wool. The study determines the temperature and vapour pressure inside the wall and presents calculations of thermal factor. The study compares the characteristics of traditional walls with 3D printed elements. The tests have shown that insulating printed structures does not pose any difficulty. Corrugated structure of printed walls increases the adhesion of adhesive mortar. Proposed tests are the starting point for further studies on the thermal-humidity of 3D printed structures. The main goal is to propose a solution for cheap, efficient insulation technology for 3D printed structures.